id large_stringlengths 9 16 | title large_stringlengths 1 382 | abstract large_stringlengths 3 6.09k | publish_date date32 | update_date date32 | categories large listlengths 1 13 | authors large_stringlengths 3 62.8k |
|---|---|---|---|---|---|---|
hep-ex/9412011 | Measurement of inclusive electron cross section in $\gamma \gamma$
collisions at TRISTAN | We have studied open charm production in $\gamma \gamma$ collisions with the
TOPAZ detector at the TRISTAN $e^{+}e^{-}$ collider. In this study, charm
quarks were identified by electrons (and positrons) from semi-leptonic decays
of charmed hadrons. The data corresponded to an integrated luminosity of 95.3
pb$^{-1}$ at ... | 1994-12-16 | 2010-11-01 | [
"hep-ex"
] | M. Iwasaki, et al. (TOPAZ collaboration) |
hep-ex/9412009 | Kinematic Evidence for Top Quark Pair Production in $W+$ Multijet Events
in $p \bar p$ Collisions at $\sqrt{s}$~=~1.8 TeV | We present a study of $W+$multijet events that compares the kinematics of the
observed events with expectations from direct QCD $W+$jet production and from
production and decay of top quark pairs. The data were collected in the 1992-93
run with the Collider Detector at Fermilab from 19.3 pb$^{-1}$ of proton-anti
proton... | 1994-12-14 | 2010-05-12 | [
"hep-ex"
] | F. Abe, et al. (CDF Collaboration) |
hep-ex/9412010 | Feasibility Study of Single-Photon Counting Using a Fine-mesh Phototube
for an Aerogel Readout | The fine-mesh phototube is one type of photodetector which can be used under
a strong magnetic field. For an aerogel readout, the single-photon detection
efficiency should be close to 100\% in order to identify particle species. We
carried out a feasibility study of single-photon counting using fine-mesh
phototubes, an... | 1994-12-14 | 2010-11-01 | [
"hep-ex"
] | R. Enomoto et al |
hep-ex/9412008 | Study of a Threshold Cherenkov Counter Based on Silica Aerogels with Low
Refractive Indices | To identify $\pi^{\pm}$ and $K^{\pm}$ in the region of $1.0\sim 2.5$ GeV/c, a
threshold Cherenkov counter equipped with silica aerogels has been
investigated. Silica aerogels with a low refractive index of 1.013 have been
successfully produced using a new technique. By making use of these aerogels as
radiators, we have... | 1994-12-13 | 2009-10-22 | [
"hep-ex"
] | I. Adachi et al |
hep-ex/9412007 | Test of Various Photocathodes | A test of various photocathodes was carried out. The tested materials were
CsI, CsTe, their multi-layers and so on. The quantum efficiencies of the
various materials were measured under a vacuum and/or after exposure to several
kinds of gases. | 1994-12-12 | 2009-10-22 | [
"hep-ex"
] | Ryoji Enomoto, Takayuki Sumiyoshi, and Yoshio Fujita |
hep-ex/9412006 | Observation of Target Electron Momentum Effects in Single-Arm M\o ller
Polarimetry | In 1992, L.G. Levchuk noted that the asymmetries measured in M\o ller
scattering polarimeters could be significantly affected by the intrinsic
momenta of the target electrons. This effect is largest in devices with very
small acceptance or very high resolution in laboratory scattering angle. We use
a high resolution po... | 1994-12-10 | 2009-10-22 | [
"hep-ex"
] | M. Swartz, H.R. Band, F.J. Decker, P. Emma, M.J. Fero, R.Frey, R.
King, A. Lath, T. Limberg, R. Prepost, P.C. Rowson, B.A. Schumm, M. Woods, M.
Zolotorev |
hep-ex/9412005 | New Tagging Method of B Flavor of Neutral B Meson in CP Violation
Measurement in Asymmetric B-Factory Experiment | In CP violation measurements in asymmetric B-factory experiments, a
determination of the B flavor of the neutral B mesons is necessary. A new
method to this purpose using only three vectors of charged particles has been
developed. This method (weighted charge method) does not require either lepton
identification or cha... | 1994-12-08 | 2010-11-01 | [
"hep-ex"
] | R. Enomoto |
hep-ex/9412004 | On the Kinematic Reconstruction of Deep Inelastic Scattering at HERA:
the $\Sigma$ Method | We review and compare the reconstruction methods of the inclusive deep
inelastic scattering variables used at HERA. We introduce a new prescription,
the $\Sigma$ method, which allows to measure the structure function of the
proton $F_2(x,Q^2)$ in a large kinematic domain, and in particular in the low
x-low$Q^2$ region,... | 1994-12-06 | 2009-10-22 | [
"hep-ex"
] | Ursula Bassler and Gregorio Bernardi |
hep-ex/9412003 | $K^0(\bar{K^0})$ Production in Two-Photon Processes at TRISTAN | We have carried out an inclusive measurement of $K^0(\bar{K^0})$ production
in two-photon processes at TRISTAN. The mean $\sqrt{s}$ was 58 GeV and the
integrated luminosity was 199 pb$^{-1}$. High-statistics $K_s$ samples were
obtained under such conditions as no-, anti-electron, and remnant-jet tags. The
remnant-jet t... | 1994-12-06 | 2010-11-01 | [
"hep-ex"
] | R. Enomoto, et al. (TOPAZ collaboration) |
hep-ex/9412002 | W-Jet Rapidity Correlations in $p\bar p$ Collisions at $\sqrt{s}=1.8$
TeV | D0 has used W -> e nu events produced in association with a high $p_T$ jet to
examine the effects of strong radiative corrections. We have compared the
primary jet pseudorapidity distribution, as a function of reconstructed W
rapidity to leading order (LO) and next to leading order (NLO) QCD Monte
Carlos, as well as a ... | 1994-12-05 | 2016-08-31 | [
"hep-ex",
"hep-ph"
] | G.E. Forden |
hep-ex/9412001 | Measurement of the $D^{*\pm}$ Cross Section using a Soft-Pion Analysis
in Two-Photon Processes | The differential cross section of $d\sigma(e^+e^-\to e^+e^-D^{*\pm}X)/dP_T$
was measured using a soft-pion analysis of $D^{*\pm}\to \pi_s^\pm
D^0(\bar{D^0})$ at TRISTAN. The average $\sqrt{s}$ was 58.1 GeV and the
integrated luminosity used in this analysis was 198 pb$^{-1}$, respectively. | 1994-12-02 | 2010-11-01 | [
"hep-ex"
] | R. Enomoto, et al. (TOPAZ collaboration) |
hep-ex/9411002 | A Measurement of the $D^{*\pm}$ Cross Section in Two-Photon Processes | We have measured the inclusive $D^{*\pm}$ production cross section in a
two-photon collision at the TRISTAN $e^+e^-$ collider. The mean $\sqrt{s}$ of
the collider was 57.16 GeV and the integrated luminosity was 150 $pb^{-1}$. The
differential cross section ($d\sigma(D^{*\pm})/dP_T$) was obtained in the $P_T$
range betw... | 1994-11-29 | 2010-11-01 | [
"hep-ex"
] | R. Enomoto, et al. (TOPAZ collaboration) |
hep-ex/9411001 | Search for High Mass Top Quark Production in p anti-p Collisions at
S**(1/2) = 1.8 TeV | We present new results on the search for the top quark in p anti-p collisions
at S**(1/2) = 1.8 TeV with an integrated luminosity of 13.5 +- 1.6 pb**(-1). We
have considered t anti-t production in the Standard Model using electron and
muon dilepton decay channels (t anti-t -> e mu + jets, e e + jets, and mu mu +
jets) ... | 1994-11-08 | 2008-11-26 | [
"hep-ex"
] | S. Abachi, et al. (the D0 Collaboration) |
hep-ex/9410011 | VLPC Characterization for the Dzero Upgrade | We have studies the performance characteristics of approximately 4000 Visible
Light Photon Counters(VLPC) over a range of operating temperatures and biases.
We will describe the characterization procedure and present the measured gain,
noise and the relative quantum efficiency for the devices. We will also discuss
the ... | 1994-10-17 | 2009-09-25 | [
"hep-ex"
] | Chul Hi Park (Fermilab), D0 Collaboration |
hep-ex/9410010 | Search for Top with D0 Detector in Dilepton Channel | Preliminary results from a search for high mass ttbar quark pair production
in ppbar collisions at sqrt(s)=1.8TeV with the D0 detector in the ee+jets,
emu+jets, and mumu+jets decay channels are presented. No conclusive evidence
for top quark production for an integrated luminosity of 13.5+/-1.6pb-1 is
observed. | 1994-10-12 | 2009-09-25 | [
"hep-ex"
] | Krzysztof GENSER (Fermilab), D0 Collaboration |
hep-ex/9410009 | Polarized Bhabha Scattering and a Precision Measurement of the Electron
Neutral Current Couplings | We present the first measurement of the left-right asymmetry in Bhabha
scattering with a polarized electron beam. The effective electron vector and
axial vector couplings to the Z0 are extracted from a combined analysis of the
polarized Bhabha scattering data and the left-right asymmetry previously
published by this co... | 1994-10-11 | 2012-08-27 | [
"hep-ex"
] | the SLD Collaboration |
hep-ex/9410008 | A Study of Events with Large Total Transverse Energy Produced in
Proton-Antiproton Collisions at sqrt{s} = 1.8 Tev | Properties of events originating from proton--antiproton interactions in
which the total transverse energy of the event exceeded 400 GeV are presented.
Based on a data sample of 5.45 pb-1, the topology of these hard scattering
events as well as preliminary results for the cross--section versus total
transverse energy a... | 1994-10-10 | 2007-05-23 | [
"hep-ex"
] | HENRYK PIEKARZ (Florida State University), D0 Collaboration |
hep-ex/9410007 | Measurement of Correlated b quark Cross Sections at CDF | Using data collected during the 1992-1993 collider run at Fermilab, CDF has
made measurements of correlated $b$ quark cross sections where one $b$ is
detected from the lepton from semileptonic decay and the second $b$ is detected
with secondary vertex techniques. We report on measurements of the cross
section as a func... | 1994-10-06 | 2007-05-23 | [
"hep-ex"
] | Paul F. Derwent |
hep-ex/9410006 | Search for slowly moving magnetic monopoles | We report a search for slowly moving magnetic monopoles in the cosmic
radiation with the first supermodule of the MACRO detector at Gran Sasso. The
absence of candidates established an upper limit on the monopole flux of
$5.6\times10^{-15}\mbox{cm}^{-2}\mbox{sr}^{-1}\mbox{s}^{-1}$ at 90\% confidence
level for the veloc... | 1994-10-05 | 2010-11-01 | [
"hep-ex"
] | J. T. Hong (for MACRO Collaboration) |
hep-ex/9410005 | Measurement of Correlated $b$ Quark Cross Sections at CDF | Using data collected during the 1992-93 collider run at Fermilab, CDF has
made measurements of correlated $b$ quark cross section where one $b$ is
detected via a muon from semileptonic decay and the second $b$ is detected with
secondary vertex techniques. We report on measurements of the cross section as
a function of ... | 1994-10-05 | 2007-05-23 | [
"hep-ex"
] | David Gerdes, the CDF Collaboration |
hep-ex/9410004 | New Shower Maximum Trigger for Electrons and Photons at CDF | For the 1994 Tevatron collider run, CDF has upgraded the electron and photon
trigger hardware to make use of shower position and size information from the
central shower maximum detector. For electrons, the upgrade has resulted in a
50\% reduction in backgrounds while retaining approximately 90\% of the signal.
The new... | 1994-10-05 | 2007-05-23 | [
"hep-ex"
] | David Gerdes, the CDF Collaboration |
hep-ex/9410003 | Search for Supersymmetry and Leptoquark States at FNAL | Searches have been made for first generation scalar and vector leptoquarks by
the D0 collaboration and for second generation scalar leptoquarks by the CDF
collaboration. Lower leptoquark mass limits were set. A search for squarks and
gluinos, predicted by Supersymmetric models, was made by D0 in the three or
more jets ... | 1994-10-04 | 2008-02-03 | [
"hep-ex"
] | Sharon Hagopian (Florida State University), D0 Collaboration |
hep-ex/9410002 | Search for Supersymmetric Wino and Zino States Using the D0 Detector | The status of a search for the pair production of the lightest chargino and
second lightest neutralino states of the minimal supersymmetric model is
presented. We have searched for four tri-lepton final states: eee, eemu, emumu,
and mumumu, all with missing transverse energy. | 1994-10-03 | 2007-05-23 | [
"hep-ex"
] | Susan Blessing (Florida State University), D0 Collaboration |
hep-ex/9410001 | Multiple Muon Measurements with MACRO | The MACRO experiment at Gran Sasso provides means for detailed studies of
multiple coincident penetrating cosmic ray muons. In this paper we concentrate
on the studies of the ultrahigh energy primary cosmic ray composition using
muon bundle multiplicities, muon pair lateral and angular separation
distributions. | 1994-10-03 | 2008-02-03 | [
"hep-ex",
"astro-ph",
"hep-ph"
] | The MACRO Collaboration, J. T. Hong (Boston Univ) et al |
hep-ex/9409008 | Search for First and Second Generation Leptoquarks at D\O | A search for first and second generation leptoquarks has been done with the
D\O \ detector at Fermilab's p\={p} collider with $\sqrt{s}=1.8$ TeV. 95\% C.L.
mass limits for first generation scalar leptoquarks have been recently
published. The number for the total integrated luminosity used in the first
generation leptoq... | 1994-09-30 | 2009-09-25 | [
"hep-ex"
] | Douglas M. Norman (Texas A&M University), the DZero Collaboration |
hep-ex/9409005 | Search for top in D-Zero using the electron + jets channel with soft
muon tagging | We present preliminary results for the search for the top quark in D-Zero in
the electron + jets channel where one of the b quark jets is tagged by means of
a soft muon, using 13.5 pb-1 of data. Standard model decay modes for the top
quark are assumed. We present the resulting top cross section and error as a
function ... | 1994-09-29 | 2007-05-23 | [
"hep-ex"
] | Rajendran Raja (Fermilab) |
hep-ex/9409006 | Search for the Top Quark: Results from the D-Zero Experiment | We review the search for the top quark conducted by the D-Zero collaboration
using data from the Fermilab pbar-p collider. Based upon a preliminary analysis
of an integrated luminosity of about 13.5 pb-1, we have searched for t-tbar
production and decay in the experimental channels involving a pair of dileptons
(electr... | 1994-09-29 | 2007-05-23 | [
"hep-ex"
] | P.D.Grannis |
hep-ex/9409007 | Search for top in lepton + jets in D-Zero using a topological tag | We have searched for production of t-tbar pairs in p-pbar interactions at 1.8
TeV center-of-mass energy at the FNAL Tevatron collider. The search assumes
standard model decay for top quark into W + b quark. We observe in e+jet and
mu+jet final states a small, not statistically significant, excess above the
background e... | 1994-09-29 | 2007-05-23 | [
"hep-ex"
] | Serban Protopopescu (Brookhaven National Laboratory, for the D-Zero
Collaboration) |
hep-ex/9409004 | Measurement of the branching fraction for $\Upsilon (1S) \to \tau^+
\tau^-$ | We have studied the leptonic decay of the $\Upsilon (1S)$ resonance into tau
pairs using the CLEO II detector. A clean sample of tau pair events is
identified via events containing two charged particles where exactly one of the
particles is an identified electron. We find $B(\Upsilon(1S) \to \tau^+ \tau^-)
= (2.61~\pm~... | 1994-09-23 | 2009-09-25 | [
"hep-ex"
] | D. Cinabro, et al. (CLEO Collab) |
hep-ex/9409003 | Determination of the branching ratios $\Gamma (K_L \to 3 \pi^0) / \Gamma
(K_L \to \pi^+ \pi^- \pi^0)$ and $\Gamma (K_L \to 3 \pi^0) / \Gamma (K_L \to
\pi e \nu )$ | Improved branching ratios were measured for the $K_L \to 3 \pi^0 $ decay in a
neutral beam at the CERN SPS with the NA31 detector: $\Gamma (K_L \to 3 \pi^0)
/ \Gamma (K_L \to \pi^+ \pi^- \pi^0) = 1.611 \pm 0.037$ and $\Gamma (K_L \to 3
\pi^0) / \Gamma (K_L \to \pi e \nu ) = 0.545 \pm 0.010$.
From the first number an ... | 1994-09-21 | 2019-08-17 | [
"hep-ex"
] | A. Kreutz, M. Holder, M. Rost, R. Werthenbach (Fachbereich Physik,
Universit\"at Gesamthochschule Siegen, Germany), K.J.Peach (Edinburgh, UK),
H.Bl\"umer, R.Heinz, K.Kleinknecht, P.Mayer, B.Panzer, B.Renk, H.Rohrer,
A.Wagner (Universit\"at Mainz, Germany), E.Aug\'e, D.Fournier,
L.Iconomidou-Fayard, O.Perdereau,... |
hep-ex/9409002 | B+ and B0 Mean Lifetime Measurements | We review $B^+$ and $B^0$ mean lifetime measurements, including direct
measurements and determination of the lifetime ratio via measurements of the
ratio of branching ratios. We present world averages. | 1994-09-19 | 2007-05-23 | [
"hep-ex"
] | Fritz DeJongh |
hep-ex/9409001 | Measurement of the polarization of Lambda0 AntiLambda0, Sigma+ and Xi-
produced in a Sigma- beam of 330 GeV/c | The polarization of Lambda0, AntiLambda0, Sigma+ and Xi- inclusively produced
in Sigma- induced interactions at 330 GeV has been measured in the experiment
WA89 at CERN. This is the first measurement of polarization of baryons produced
by a hyperon beam. No polarization of AntiLambda is observed, as was also the
case i... | 1994-09-16 | 2010-11-01 | [
"hep-ex"
] | M. I. Adamovich, et al. (WA89 Collaboration) |
hep-ex/9408005 | Tevatron energy and luminosity upgrades beyond the Main Injector | The Fermilab Tevatron will be the world's highest energy hadron collider
until the LHC is commissioned, it has the world's highest energy fixed target
beams, and Fermilab will be the leading high energy physics laboratory in the
US for the foreseeable future. Following the demise of the SSC, a number of
possible upgrad... | 1994-08-20 | 2007-05-23 | [
"hep-ex",
"hep-ph"
] | D. Amidei, A. Baden, G. Foster, G. Jackson, T. Kamon, J. Lopez, P.
McIntyre, J. Strait, and J. White |
hep-ex/9408004 | Probing Color Coherency Using High pT W Events at the TEVATRON | \D0 has used W --> e nu events associated with a high pT jet to probe for the
effects of extended source color dipole radiation in W-jet rapidity
correlations. We have also studied the low energy flow in these events and
shown an enhancement between the jet and the beam directions, indicating the
effects of color coher... | 1994-08-17 | 2009-09-25 | [
"hep-ex",
"hep-ph"
] | G.E. Forden, the D0 Collaboration |
hep-ex/9408003 | New Results from CLEO-II on Hadronic Decays of the Tau Lepton | Results on semi-hadronic decays of the $\tau$ lepton are presented, from
studies of $e^+e^-$ annihilation data obtained at the Cornell Electron Storage
Ring with the CLEO-II detector. Branching fractions have been measured for
decays to two, three and four hadrons, namely $\tau^-\!\!\rightarrow\! \nu_\tau
h^-\pi^0$, $\... | 1994-08-16 | 2008-02-03 | [
"hep-ex"
] | Jon Urheim |
hep-ex/9408002 | New Measurements of CP Violation Parameters as Tests of CPT in K Meson
Decay | Using a technique which employs a pair of solid scintillator regenerators,
the E773 collaboration has measured several CP violation parameters in K meson
decay at Fermilab. We report new results for the phase of eta_+-, the K_L-K_S
mass difference, the K_S lifetime, and the phase difference
Arg(eta_00)-Arg(eta_+-) in K... | 1994-08-09 | 2009-09-25 | [
"hep-ex"
] | G.D. Gollin and W.P. Hogan |
hep-ex/9408001 | Spin Asymmetry in Muon--Proton Deep Inelastic Scattering on a
Transversely-Polarized Target | We measured the spin asymmetry in the scattering of 100 GeV
longitudinally-polarized muons on transversely polarized protons. The asymmetry
was found to be compatible with zero in the kinematic range $0.006<x<0.6$,
$1<Q^2<30\,~\mbox{GeV}^2$. {}From this result we derive the upper limits for
the virtual photon--proton a... | 1994-08-06 | 2012-08-27 | [
"hep-ex"
] | The Spin Muon Collaboration |
hep-ex/9407003 | Unbiased Estimators for Correlation Measurements | Higher order correlation measurements involve multiple event averages which
must run over unequal events to avoid statistical bias. We derive correction
formulas for small event samples, where the bias is largest, and utilize the
results to achieve savings in CPU time consumption for the star integral.
Results from a s... | 1994-07-27 | 2009-10-22 | [
"hep-ex",
"astro-ph",
"chao-dyn",
"comp-gas",
"hep-ph",
"nlin.CD",
"nlin.CG"
] | H.C. Eggers and P. Lipa |
hep-ex/9407002 | Top Mass from Electroweak Measurements | The electroweak measurements made at LEP using 1989-1993 data are presented
in preliminary form. The agreement with the Standard Model is satisfactory, and
allows a combined fit to all available data for the masses of the top quark and
standard Higgs boson. The fit yields M_t = 177 +11 -11 +18 -19 GeV/c2, where
the sec... | 1994-07-06 | 2007-05-23 | [
"hep-ex"
] | Bob Jacobsen |
hep-ex/9407001 | CPT Tests in the Neutral Kaon System by FNAL E773 | The FNAL experiment E773 has measured the phases Phi_{+-} = (43.35 +- 0.70 +-
0.79) degree and Phi_{00}-Phi_{+-} = (0.67 +- 0.85 +- 1.1) degree of the CP
violating parameters eta_{+-} and eta_{00} in the decay of neutral kaons into
two charged or neutral pions. These preliminary results test CPT symmetry and
show no ev... | 1994-07-06 | 2009-10-22 | [
"hep-ex"
] | B. Schwingenheuer |
hep-ex/9406007 | Determination of the Strange Quark Content of the Nucleon from a
Next-to-Leading-Order QCD Analysis of Neutrino Charm Production | We present the first next-to-leading-order QCD analysis of neutrino charm
production, using a sample of 6090 $\nu_\mu$- and $\bar\nu_\mu$-induced
opposite-sign dimuon events observed in the CCFR detector at the Fermilab
Tevatron. We find that the nucleon strange quark content is suppressed with
respect to the non-stran... | 1994-06-29 | 2008-11-26 | [
"hep-ex"
] | A. O. Bazarko, et al. (CCFR Collaboration) |
hep-ex/9406005 | Measurement of the B -> D^* l nu Branching Fractions and |Vcb| | We study the exclusive semileptonic B meson decays B- -> D*0 l- nu and B0 ->
D*+ l- nu using data collected with the CLEO II detector at CESR. We present
measurements of the branching fractions B(B0 -> D*+ l-nu) = 0.5/f00*
[4.49+/-0.32+/-0.39]% and B(B- -> D*0 l-nu) = 0.5/f+-*[5.13+/-0.54+/-0.64]%,
where f00 and f+- ar... | 1994-06-24 | 2012-08-27 | [
"hep-ex"
] | The CLEO Collaboration |
hep-ex/9406006 | Multiple Scattering Error Propagation in Particle Track Reconstruction | Particle track reconstruction capabilities of the silicon tracking detector
system have been studied. As the multiple Coulomb scattering (MCS) induces
unavoidable uncertainties on the coordinate measurement, the corresponding
error estimates and the associated correlations have been used to find the best
track fit para... | 1994-06-24 | 2007-05-23 | [
"hep-ex"
] | M.Pentia, G.Iorgovan and A.Mihul |
hep-ex/9406004 | Semileptonic Branching Fraction of Charged and Neutral B Mesons | An examination of leptons in ${\Upsilon (4S)}$ events tagged by reconstructed
$B$ decays yields semileptonic branching fractions of $b_-=(10.1 \pm 1.8\pm
1.4)\%$ for charged and $b_0=(10.9 \pm 0.7\pm 1.1)\%$ for neutral $B$ mesons.
This is the first measurement for charged $B$. Assuming equality of the charged
and neut... | 1994-06-23 | 2012-08-27 | [
"hep-ex"
] | The CLEO collaboration |
hep-ex/9406003 | A Neural Network for Locating the Primary Vertex in a Pixel Detector | Using simulated collider data for $p+p\rightarrow 2{\rm Jets}\ $ interactions
in a 2-barrel pixel detector, a neural network is trained to construct the
coordinate of the primary vertex to a high degree of accuracy. Three other
estimates of this coordinate are also considered and compared to that of the
neural network.... | 1994-06-21 | 2010-11-01 | [
"hep-ex"
] | R. Kantowski and Caren Marzban |
hep-ex/9406002 | Average Multiplicities in Gluon and Quark Jets in Higher-Order
Perturbative QCD | The ratio of average multiplicities in gluon and quark jets is shown to
become noticeably smaller in higher-order QCD compared to its lowest order
value what improves agreement with experiment.
QCD anomalous dimension has been calculated. It has been used to get energy
dependence of mean multiplicities. | 1994-06-06 | 2015-06-25 | [
"hep-ex"
] | I.M. Dremin and V.A. Nechitailo (P.N.Lebedev Physical Institute,
Moscow, Russia) |
hep-ex/9406001 | LEP asymmetries and fits of the Standard Model | The lepton and quark asymmetries measured at LEP are presented. The results
of the Standard Model fits to the electoweak data presented at this conference
are given. The top mass obtained from the fit to the LEP data is
$172^{+13+18}_{-14-20}$ GeV; it is $177^{+11+18}_{-11-19}$ when also the
collider, $\nu$ and $A_{LR}... | 1994-06-02 | 2007-05-23 | [
"hep-ex"
] | B.Pietrzyk |
hep-ex/9405012 | Polarization of Valence and Sea Quarks in the Proton | Analysis was performed of semi-inclusive and inclusive spin asymmetries
determined from the polarized deep inelastic scattering by the Spin Muon
Collaboration. Combined analysis of data for polarized deuterium and hydrogen
targets allows for separate determination of spin carried by valence {\it u}
and {\it d} quarks a... | 1994-05-30 | 2007-05-23 | [
"hep-ex",
"hep-ph"
] | Wojciech Wi\'slicki |
hep-ex/9405010 | Quasiparticle and phonon propagation in superheated superconducting
granules after nuclear recoils | The propagation of the excess of quasiparticles and phonons produced by a
nuclear recoil inside Sn and Zn superheated superconducting granules will be
discussed. The decay towards equilibrium of the initial disturbance is assumed
to be a thermal diffusion process described by a set of coupled heat flow
equations for th... | 1994-05-20 | 2007-05-23 | [
"hep-ex",
"cond-mat"
] | A. Gabutti |
hep-ex/9405009 | Phase transition time delays in irradiated superheated superconducting
granules | The time difference between a particle interaction in a Superheated
Superconducting Granule (SSG) and the resulting phase transition signal has
been explored. Detectors containing Zn and Sn SSG were irradiated with neutrons
and protons to study the heating mechanism taking place in nuclear recoil and
ionizing events. S... | 1994-05-20 | 2007-05-23 | [
"hep-ex",
"cond-mat"
] | K. Schmiemann, et al |
hep-ex/9405011 | Precise Determination of the Weak Mixing Angle from a measurement of ALR
in e+e- -> Z0 | In the 1993 SLC/SLD run, the SLD recorded 50,000 $\z0$ events produced by the
collision of longitudinally polarized electrons on unpolarized positrons at a
center-of-mass energy of 91.26 GeV. The luminosity-weighted average
polarization of the SLC electron beam was (63.0$\pm$1.1)\%. We measure the
left-right cross-sect... | 1994-05-20 | 2012-08-27 | [
"hep-ex"
] | SLD Collaboration (M. Woods et. al.) |
hep-ex/9405007 | Cumulant to Factorial Moment Ratio and Multiplicity Data | The ratio of cumulant to factorial moments of experimental multiplicity
distributions has been calculated for $e^{+}e^{-}$ and $hh$ interactions in a
wide range of energies. As a function of the rank it exhibits an initial steep
decrease and a series of oscillations around zero. Those features cannot be
reproduced by t... | 1994-05-18 | 2009-10-22 | [
"hep-ex",
"hep-ph"
] | I.M.Dremin (P.N.Lebedev Institute of Physics, Moscow), V.Arena,
G.Boca, G.Gianini, S.Malvezzi, M.Merlo, S.P.Ratti, C.Riccardi, G.Salvadori,
L.Viola, P.Vitulo (Department of Nuclear and Theoretical Physics, University
of Pavia and Sezione INFN, Pavia, Italy) |
hep-ex/9405008 | A Precise Measurement of the Weak Mixing Angle in Neutrino-Nucleon
Scattering | We report a precise measurement of the weak mixing angle from the ratio of
neutral current to charged current inclusive cross-sections in deep-inelastic
neutrino-nucleon scattering. The data were gathered at the CCFR neutrino
detector in the Fermilab quadrupole-triplet neutrino beam, with neutrino
energies up to 600 Ge... | 1994-05-18 | 2009-09-25 | [
"hep-ex"
] | C. G. Arroyo, et al. (CCFR Collaboration) |
hep-ex/9405006 | Measurement of alpha-s from energy-energy correlations at the Z0
resonance | We have determined the strong coupling alpha-s from a comprehensive study of
energy-energy correlations (EEC) and their asymmetry (AEEC) in hadronic decays
of Z0 bosons collected by the SLD experiment at SLAC. The data were compared
with all four available predictions of QCD calculated up to O(alpha-s**2) in
perturbati... | 1994-05-17 | 2009-09-25 | [
"hep-ex"
] | K. Abe, et al |
hep-ex/9405005 | Evidence for Top Quark Production in $\bar{p}p$ Collisions at
$\sqrt{s}=1.8$ TeV | We summarize a search for the top quark with the Collider Detector at
Fermilab (CDF) in a sample of $\bar{p}p$ collisions at $\sqrt{s}$= 1.8 TeV with
an integrated luminosity of 19.3~pb$^{-1}$. We find 12 events consistent with
either two $W$ bosons, or a $W$ boson and at least one $b$ jet. The probability
that the mea... | 1994-05-16 | 2010-05-12 | [
"hep-ex",
"hep-ph"
] | F. Abe, et al. (CDF Collaboration) |
hep-ex/9405004 | Measurement of the Charged Multiplicity of $Z \rightarrow b
\overline{b}$ Events | Using an impact parameter tag to select an enriched sample of $Z \rightarrow
b \overline{b}$ events, we have measured the difference between the average
charged multiplicity of $Z \rightarrow b \overline{b}$ and $Z^0 \rightarrow
hadrons$ to be $\overline{n}_{b} - \overline{n}_{had} = 2.24\pm
0.30(\rm{stat.}) \pm 0.33(\... | 1994-05-13 | 2012-08-27 | [
"hep-ex",
"hep-ph"
] | The SLD Collaboration |
hep-ex/9405003 | Observation of Anisotropic Event Shapes and Transverse Flow in Au+Au
Collisions at AGS Energy | Event shapes for Au + Au collisions at 11.4 GeV/c per nucleon were studied
over nearly the full solid angle with the E877 apparatus. The analysis was
performed by Fourier expansion of azimuthal distributions of the transverse
energy (E_T) measured in different pseudorapidity intervals. For semicentral
collisions a pron... | 1994-05-13 | 2011-08-19 | [
"hep-ex"
] | J. Barrette, et al. (E877-Collaboration) |
hep-ex/9405002 | An optimal method of moments to measure the charge asymmetry at the
$Z^0$ | Parity violation at LEP or SLC can be measured through the charge asymmetry.
An optimal method of moments is developed here to measure this asymmetry, as
well as similar asymmetries. This method is equivalent to the likelihood fit.
It is simpler in use, as it gives analytical formulas for both the asymmetry
and its sta... | 1994-05-11 | 2010-11-01 | [
"hep-ex"
] | Nichol C. Brummer |
hep-ex/9405001 | Experimental momentum spectra of identified hadrons in jets and the
predictions from LPHD + MLLA | Experimental data on the shape of hadronic momentum spectra are compared with
theoretical predictions in the context of calculations in the Modified Leading
Log Approximation (MLLA), under the assumption of Local Parton Hadron Duality
(LPHD). Considered are experimental measurements at $e^+e^-$-colliders of
$\xi_p^*$, ... | 1994-05-11 | 2007-05-23 | [
"hep-ex",
"hep-ph"
] | Nichol. C. Brummer |
hep-ex/9404001 | Precise Measurement of the Left-Right Cross Section Asymmetry in $Z$
Boson Production by $\ee$ Collisions | We present a precise measurement of the left-right cross section asymmetry
($A_{LR}$) for $Z$ boson production by $\ee$ collisions. The measurement was
performed at a center-of-mass energy of 91.26 GeV with the SLD detector at the
SLAC Linear Collider (SLC). The luminosity-weighted average polarization of the
SLC elect... | 1994-04-27 | 2012-08-27 | [
"hep-ex",
"hep-ph"
] | The SLD Collaboration |
hep-lat/9412114 | Hubbard Model with Luscher fermions | First applications of the new algorithm simulating dynamical fermions are
reported. The method reproduces previous results obtained with different
techniques. | 1994-12-31 | 2009-10-28 | [
"hep-lat"
] | P. Sawicki and J. Wosiek (Jagellonian University, Cracow) |
hep-lat/9412113 | Noncompact Gauge-Invariant Simulations of U(1), SU(2), and SU(3) | We have applied a new gauge-invariant, noncompact, Monte Carlo method to
simulate the $U(1)$, $SU(2)$, and $SU(3)$ gauge theories on $8^4$ and $12^4$
lattices. The Creutz ratios of the Wilson loops agree with the exact results
for $U(1)$ for $\beta \ge 0.5$ apart from a renormalization of the charge. The
$SU(2)$ and $S... | 1994-12-31 | 2009-10-28 | [
"hep-lat"
] | Kevin Cahill and Gary Herling |
hep-lat/9412112 | QCD Thermodynamics at $N_t=8$ and 12 | We present results from studies of high temperature QCD with two flavors of
Kogut-Susskind quarks on $16^3\times 8$ lattices at a quark mass of
$am_q=0.00625$ and on $24^3\times 12$ lattices at quark masses $am_q=0.008$ and
0.016. The value of the crossover temperature is consistent with that obtained
on coarser lattic... | 1994-12-30 | 2008-11-26 | [
"hep-lat"
] | the HEMCGC and MILC Collaborations |
hep-lat/9412111 | Monte Carlo and Renormalization Group Effective Potentials in Scalar
Field Theories | We study constraint effective potentials for various strongly interacting
$\phi^4$ theories. Renormalization group (RG) equations for these quantities
are discussed and a heuristic development of a commonly used RG approximation
is presented which stresses the relationships among the loop expansion, the
Schwinger-Dyson... | 1994-12-29 | 2009-09-25 | [
"hep-lat",
"nucl-th"
] | J. R. Shepard and V. Dmitra\v{s}inovi\'c (Dept of Physics, Univ of
Colorado) and J. A. McNeil (Dept of Physics, Colorado School of Mines) |
hep-lat/9412110 | Duals of nonabelian gauge theories in $D$ dimensions | The dual of an arbitrary $D$-dimensional nonabelian lattice gauge theory,
obtained after character expansion and integration over the gauge group, is
shown to be a {\em local} lattice theory in the eigenspace of the Casimir
operators. For $D\leq4$ we also provide the explicit form of the action as a
product of characte... | 1994-12-29 | 2009-10-28 | [
"hep-lat"
] | I.G. Halliday (Dept of Physics, Univ of Wales Swansea) and P. Suranyi
(Dept of Physics, Univ of Wales Swansea, and Dept of Physics, University of
Cincinnati) |
hep-lat/9412106 | Status of the CP-PACS Project | The CP-PACS Project, which started in April 1992, is a five-year plan to
develop a massively parallel computer for carrying out research in
computational physics with primary emphasis on lattice QCD. This article
describes the architectural design of the CP-PACS computer, the entire
computing system including the front... | 1994-12-28 | 2009-10-28 | [
"hep-lat"
] | A. Ukawa |
hep-lat/9412108 | Monopoles and deconfinement transition in finite temperature $SU(2)$ QCD | We investigate the role of monopoles in the deconfinement transition of
finite temperature $SU(2)$ QCD in the maximally abelian gauge. In the
confinement phase a long monopole loop exists in each configuration, whereas no
long loop exists in the deep deconfinement region. Balancing of the energy and
the entropy of loop... | 1994-12-28 | 2009-10-28 | [
"hep-lat"
] | Shun-ichi Kitahara, Yoshimi Matsubara and Tsuneo Suzuki |
hep-lat/9412107 | Monopole effects on Polyakov loop and its gauge independence in QCD | Monte-Carlo simulations of abelian projection in $T \neq 0$ pure lattice QCD
show that
1)\ Polyakov loops written in terms of abelian link fields alone play a role
of an order parameter of deconfinement transition
2)\ the abelian Polyakov loops are decomposed into contributions from Dirac
strings of monopoles and f... | 1994-12-28 | 2009-10-28 | [
"hep-lat"
] | Yoshimi Matsubara, Sawut Ilyar, Tsuyoshi Okude, Kenji Yotsuji and
Tsuneo Suzuki |
hep-lat/9412103 | Phase Diagram of QCD at Finite Temperatures with Wilson Fermions | Phase diagram of QCD with Wilson fermions for various numbers of flavors
$N_F$ is discussed. Our simulations mainly performed on a lattice with the
temporal size $N_t =4$ indicate the following: The chiral phase transition is
of first order when $3 \le N_F \le 6$, while it is continuous when $N_F=2$. For
the realistic ... | 1994-12-27 | 2009-10-28 | [
"hep-lat"
] | Y. Iwasaki |
hep-lat/9412105 | Complex-Temperature Properties of the 2D Ising Model with $\beta H = \pm
i \pi/2$ | We study the complex-temperature properties of a rare example of a
statistical mechanical model which is exactly solvable in an external
symmetry-breaking field, namely, the Ising model on the square lattice with
$\beta H = \pm i \pi/2$. This model was solved by Lee and Yang \cite{ly}. We
first determine the complex-te... | 1994-12-27 | 2009-10-28 | [
"hep-lat"
] | Victor Matveev and Robert Shrock |
hep-lat/9412104 | Two dimensional twisted chiral fermions on the lattice | It is shown that the lattice overlap correctly reproduces the chiral
determinant on a two dimensional torus in the presence of nontrivial background
Polyakov loop variables. | 1994-12-27 | 2009-10-28 | [
"hep-lat",
"hep-th"
] | Rajamani Narayanan and Herbert Neuberger |
hep-lat/9412102 | Large-N phase transition in lattice 2-d principal chiral models | We investigate the large-N critical behavior of 2-d lattice chiral models by
Monte Carlo simulations of U(N) and SU(N) groups at large N. Numerical results
confirm strong coupling analyses, i.e. the existence of a large-N second order
phase transition at a finite $\beta_c$. | 1994-12-24 | 2010-11-01 | [
"hep-lat"
] | M. Campostrini, P. Rossi and E. Vicari |
hep-lat/9412101 | Strong coupling analysis of the large-N 2-d lattice chiral models | Two dimensional large-N chiral models on the square and honeycomb lattices
are investigated by a strong coupling analysis. Strong coupling expansion turns
out to be predictive for the evaluation of continuum physical quantities, to
the point of showing asymptotic scaling. Indeed in the strong coupling region a
quite la... | 1994-12-24 | 2009-10-28 | [
"hep-lat"
] | M. Campostrini, P. Rossi and E. Vicari |
hep-lat/9412099 | Running coupling constant and correlation length from Wilson loops | We consider a definition of the QCD running coupling constant $\alpha(\mu)$
related to Wilson loops of size $r{\times}t$ with arbitrary fixed $t/r$. The
schemes defined by these couplings are very close to the $\overline{\rm MS}$
scheme (i.e.\ the one-loop perturbative correction to the coupling is small)
for all value... | 1994-12-23 | 2009-10-28 | [
"hep-lat"
] | Massimo Campostrini, Paolo Rossi, and Ettore Vicari |
hep-lat/9412096 | Strong coupling expansion of chiral models | A general precedure is outlined for an algorithmic implementation of the
strong coupling expansion of lattice chiral models on arbitrary lattices. A
symbolic character expansion in terms of connected values of group integrals on
skeleton diagrams may be obtained by a fully computerized approach. | 1994-12-23 | 2009-10-28 | [
"hep-lat"
] | M. Campostrini, P. Rossi and E. Vicari |
hep-lat/9412100 | Nonperturbative ``Lattice Perturbation Theory'' | We discuss a program for replacing standard perturbative methods with Monte
Carlo simulations in short distance lattice gauge theory calculations. | 1994-12-23 | 2009-10-28 | [
"hep-lat"
] | W. Dimm, G. Peter Lepage, and Paul B. Mackenzie |
hep-lat/9412098 | Strong-coupling expansion of chiral models | The strong-coupling character expansion of lattice models is reanalyzed in
the perspective of its complete algorithmization. The geometric problem of
identifying, counting, and grouping together all possible contributions is
disentangled from the group-theoretical problem of weighting them properly. The
first problem i... | 1994-12-23 | 2009-10-28 | [
"hep-lat"
] | Massimo Campostrini, Paolo Rossi, and Ettore Vicari |
hep-lat/9412097 | Asymptotic scaling from strong coupling in 2-d lattice chiral models | Two dimensional $N=\infty$ lattice chiral models are investigate by a strong
coupling analysis. Strong coupling expansion turns out to be predictive for the
evaluation of continuum physical quantities, to the point of showing asymptotic
scaling (within 5\%). | 1994-12-23 | 2009-10-28 | [
"hep-lat"
] | M. Campostrini, P. Rossi and E. Vicari |
hep-lat/9412095 | Latest Results from Heavy Quark Simulations | The status of b-bbar and c-cbar calculations, numerical and analytic, are
reviewed. The extraction of alpha_s and quark masses from spectrum calculations
is discussed. The NRQCD and Improved Heavy Wilson formulations of heavy quarks
are compared, and recent calculations using a Heavy Staggered formulation are
discussed... | 1994-12-22 | 2009-10-28 | [
"hep-lat"
] | John Sloan |
hep-lat/9412109 | Low-Temperature Expansion of the Free Energy in ASOS Model | We calculate the low-temperature series of the free energy in absolute-value
solid-on-solid (ASOS) model to order $u^{23}$ using finite-lattice method. The
property of the obtained series and the behavior of their Pad\'e approximants
confirms us that the roughening transition in ASOS model is of
Kosterlitz-Thouless typ... | 1994-12-22 | 2009-10-28 | [
"hep-lat"
] | H. Arisue |
hep-lat/9412094 | Universality, Scaling and Topology with a Modified Lattice Action | We examined the effect of a complete suppression of a lattice artifact, the
negative plaquettes, on physical quantities, such as the critical temperature,
the string tension, the topological charge, glueball masses, and their ratios. | 1994-12-21 | 2009-10-28 | [
"hep-lat"
] | J. Fingberg |
hep-lat/9412092 | Results from a Non-Perturbative Renormalization of Lattice Operators | We propose a general renormalization method, which avoids completely the use
of lattice perturbation theory. We present the results from its numerical
applications to two-fermion operators on a $16^3 \times 32$ lattice, at
$\beta=6.0$. | 1994-12-20 | 2009-10-09 | [
"hep-lat"
] | G. Martinelli, C. Pittori, C.T. Sachrajda, M. Testa and A. Vladikas |
hep-lat/9412093 | Architectural choices for the Columbia 0.8 Teraflops machine | We discuss the hardware design choices made in our 16K-node 0.8 Teraflops
supercomputer project, a machine architecture optimized for full QCD
calculations. The efficiency of the conjugate gradient algorithm in terms of
balance of floating-point operations, memory handling and utilization, and
communication overhead is... | 1994-12-20 | 2009-10-28 | [
"hep-lat"
] | Igor V. Arsenin |
hep-lat/9412091 | 3d physics and the electroweak phase transition: a framework for lattice
Monte Carlo analysis | We discuss a framework relying on both perturbative and non-perturbative
lattice computations which will be able to reliably determine the parameters of
the EW phase transition. A motivation for the use of 3d effective theory in the
lattice simulations, rather than the complete 4d one, is provided. We introduce
and com... | 1994-12-20 | 2011-04-20 | [
"hep-lat",
"hep-ph"
] | K. Farakos, K. Kajantie, K. Rummukainen and M. Shaposhnikov |
hep-lat/9412090 | Master Wilson loop operators in large-N lattice QCD$_2$ | An explicit solution is found for the most general independent correlation
functions in lattice QCD$_2$ with Wilson action. The large-$N$ limit of these
correlations may be used to reconstruct the eigenvalue distributions of Wilson
loop operators for arbitrary loops. Properties of these spectral densities are
discussed... | 1994-12-20 | 2009-10-28 | [
"hep-lat"
] | P. Rossi and E. Vicari |
hep-lat/9412087 | Fitting Correlated Hadron Mass Spectrum Data | We discuss fitting hadronic Green functions versus time $t$ to extract mass
values in quenched lattice QCD. These data are themselves strongly correlated
in $t$. With only a limited number of data samples, the method of minimising
correlated $\chi^2$ is unreliable. We explore several methods of modelling the
correlatio... | 1994-12-19 | 2008-11-26 | [
"hep-lat"
] | C. Michael and A. McKerrell |
hep-lat/9412088 | Current Renormalisation Constants with an O(a)-improved Fermion Action | Using chiral Ward identities, we determine the renormalisation constants of
bilinear quark operators for the Sheikholeslami-Wohlert action lattice at
beta=6.2. The results are obtained with a high degree of accuracy. For the
vector current renormalisation constant we obtain Z_V=0.817(2)(8), where the
first error is sta... | 1994-12-19 | 2009-10-28 | [
"hep-lat"
] | David Henty, Richard Kenway, Brian Pendleton and Jon Ivar Skullerud |
hep-lat/9412089 | Heavy-light baryonic mass splittings from the lattice | We present lattice estimates of the mass of the heavy-light baryons
$\Lambda_b$ and $\Xi_b$ obtained using propagating heavy quarks. For
$\Lambda_b$ our result is $M_{\Lambda_b}=5.728 \pm 0.144 \pm 0.018$ GeV, after
extrapolation to the continuum limit and in the quenched approximation. | 1994-12-19 | 2009-10-28 | [
"hep-lat"
] | C. Alexandrou, A. Borrelli, S. Guesken, F. Jegerlehner, K. Schilling,
G. Siegert and R. Sommer |
hep-lat/9412086 | Monte Carlo simulation of $1+1$-dimensional $\phi^4$ quantum field
theory | We report results of a Monte Carlo simulation of the $\phi^4$ quantum field
theory using multigrid simulation techniques and a refined discretization
scheme. The resulting accuracy of our data allows for a significant test of an
analytical approximation based on a variational ansatz. While the variational
approximation... | 1994-12-17 | 2009-10-28 | [
"hep-lat"
] | Wolfhard Janke and Tilman Sauer |
hep-lat/9412085 | Application of Multicanonical Multigrid Monte Carlo Method to the
Two-Dimensional $\phi^4$-Model: Autocorrelations and Interface Tension | We discuss the recently proposed multicanonical multigrid Monte Carlo method
and apply it to the scalar $\phi^4$-model on a square lattice. To investigate
the performance of the new algorithm at the field-driven first-order phase
transitions between the two ordered phases we carefully analyze the
autocorrelations of th... | 1994-12-17 | 2009-10-28 | [
"hep-lat"
] | Wolfhard Janke and Tilman Sauer |
hep-lat/9412084 | Can baryogenesis occur on the lattice? | We examine the question of how baryogenesis can occur in lattice models of
the Standard Model where there is a global $U(1)$ symmetry which is accompanied
by an exactly conserved fermion number. We demonstrate that fermion creation
and annihilation can occur in these models {\em despite} this exact fermion
number conse... | 1994-12-17 | 2009-10-28 | [
"hep-lat",
"astro-ph"
] | Wolfgang Bock and James E. Hetrick |
hep-lat/9412081 | The Numerical Estimation of the Error Induced by the Valence
Approximation | We describe a systematic expansion for full QCD. The leading term in the
expansion gives the valence approximation. The expansion reproduces full QCD if
an infinite number of higher terms are included. | 1994-12-16 | 2009-10-28 | [
"hep-lat"
] | James Sexton and Donald Weingarten |
hep-lat/9412082 | Numerical Simulations of an SU(2)_L x SU(2)_R-symmetric Higgs-Yukawa
Model on the QUADRICS Q16 | We report on our work on the SU(2)_L x SU(2)_R symmetric Higgs Yukawa Model
with mirror fermion action. Our model describes a fermion Higgs system in the
limit of vanishing gauge coupling. Setting the bare Yukawa coupling of the
mirror fermions G_\chi to zero, we want to determine the triviality bounds on
the renormali... | 1994-12-16 | 2012-08-27 | [
"hep-lat"
] | M: Plagge, D. Talkenberger |
hep-lat/9412083 | Theta Vacua, Confinement and the Continuum Limit | We investigate the dependence of the CP^3 model and of the SU(2) Yang-Mills
theory on the vacuum angle theta. The CP^3 model exhibits a first order
deconfining phase transition in theta. The critical value of theta runs from pi
in the strong coupling limit towards zero as beta is taken to infinity.
Qualitatively the sa... | 1994-12-16 | 2009-10-28 | [
"hep-lat",
"hep-ph",
"hep-th"
] | G. Schierholz |
hep-lat/9412080 | Strong coupling expansion for scattering phases in hamiltonian lattice
field theories - II. SU(2) gauge theory in (2+1) dimensions | A recently proposed method for a strong coupling analysis of scattering
phenomena in hamiltonian lattice field theories is applied to the $\SU2$
Yang-Mills model in $(2+1)$ dimensions. The calculation is performed up to
second order in the hopping parameter. All relevant quantities that
characterize the collision betwe... | 1994-12-16 | 2007-05-23 | [
"hep-lat"
] | Bernd Dahmen |
hep-lat/9412079 | Efficient Hadronic Operators in Lattice Gauge Theory | We study operators to create hadronic states made of light quarks in quenched
lattice gauge theory. We construct non-local gauge-invariant operators which
provide information about the spatial extent of the ground state and excited
states. The efficiency of the operators is shown by looking at the wave
function of the ... | 1994-12-15 | 2008-11-26 | [
"hep-lat"
] | P. Lacock, A. McKerrell, C. Michael, I. M. Stopher, and P. W.
Stephenson |
hep-lat/9412078 | Chiral limit of QCD | This talk contains an analysis of quenched chiral perturbation theory and its
consequences. The chiral behavior of a number of quantities such as the pion
mass $m_\pi^2$, the Bernard-Golterman ratios $R$ and $\chi$, the masses of
nucleons, and the kaon B-parameter are examined to see if the singular terms
induced by th... | 1994-12-15 | 2009-10-28 | [
"hep-lat"
] | Rajan Gupta |
hep-lat/9412074 | Monopole density around static color sources | We analyze the vacuum structure with respect to magnetic monopoles of
quenched QCD in the presence of static color sources. Distributions of the
monopole density around static quarks and mesons are computed in both phases of
QCD. We observe a suppression of the monopole density in the vicinity of
external sources. In t... | 1994-12-14 | 2009-10-28 | [
"hep-lat"
] | H. Markum, W. Sakuler and S. Thurner |
hep-lat/9412075 | K^0--\bar{K}^0 mixing in full lattice QCD | There are at least two methods to calculate $ B_K $ with staggered fermions:
one is the two spin trace formalism and the other is the one spin trace
formalism. We have performed numerical simulations on a $ 16^3 \times 40 $
lattice in full QCD with $ \beta = 5.7 $ and a dynamical quark mass 0.01 in
lattice units. We tr... | 1994-12-14 | 2010-11-01 | [
"hep-lat",
"hep-ph"
] | Weonjong Lee and Markus Klomfass |
hep-lat/9412077 | The Perturbative Method Fails in Non-Abelian Models | It is shown that perturbation theory in $2D$ nonlinear $\sigma$-models as
well gauge theories in dimension $D\geq 2$ produces answers that depend on
boundary conditions even after the infinite volume limit has been taken. This
unphysical phenomenon occurs only in the non-Abelian versions of those models,
starting at $O... | 1994-12-14 | 2009-10-28 | [
"hep-lat"
] | A.Patrascioiu and E.Seiler |
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