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Interpretation of Scalar and axial mesons in LHCb from an historical
perspective: LHCb measurements of $B_{d,s} \to J/\psi + X$ are shown to be consistent with
historical data on scalar and axial mesons below 2 GeV. This is in contrast to
some recent interpretations of these data. Further tests of our hypotheses in
o... | hep-ex |
Search for Factorization-Suppressed B -> chi_c K(*) Decays: We search for the factorization-suppressed decays B -> chi_c0 K(*) and B ->
chi_c2 K(*), with chi_c0 and chi_c2 decaying into J/psi gamma using a sample of
124 10^6 BBbar events collected with the BABAR detector at the PEP-II storage
ring of the Stanford Linea... | hep-ex |
Study of Top-quark Production and Decay Vertices with LCD Fast
Simulation: We report a study of top-quark reconstruction in $e^+e^- \rightarrow
t\bar{t}$ events at a 500 GeV linear collider using the LCD Fast simulator. The
initial study of top-quark anomalous couplings is also reported. The final
states of 4 jets an... | hep-ex |
Evaluation of the LEP Centre-of-Mass Energy Above the W-Pair Production
Threshold: Knowledge of the centre-of-mass energy at LEP2 is of primary importance to
set the absolute energy scale for the measurement of the W-boson mass. The beam
energy above 80 GeV is derived from continuous measurements of the magnetic
bend... | hep-ex |
Global search for new physics at CDF: A model-independent global search for new physics has been performed at the
CDF experiment. This search examines 399 final states, looking for
discrepancies between observation and the standard model expectation in
populations, kinematic shapes, bumps in mass distributions suggesti... | hep-ex |
Evidence for the associated production of the Higgs boson and a top
quark pair with the ATLAS detector: A search for the associated production of the Higgs boson with a top quark
pair ($t\bar t H$) is reported. The search is performed in multilepton final
states using a dataset corresponding to an integrated luminosi... | hep-ex |
Measurement of CP-violating asymmetries in B^0 -> (rho pi)^0 decays
using a time-dependent Dalitz plot analysis: We present results for a time-dependent Dalitz plot measurement of
CP-violating asymmetries in the mode B^0 -> pi^+ pi^- pi^0. The dataset is
derived from the complete sample of 471 x 10^6 BBbar meson pair... | hep-ex |
Measurements of differential cross sections of Z/gamma*+jets+X events in
proton anti-proton collisions at sqrt{s}=1.96 TeV: We present cross section measurements for Z/gamma*+jets+X production,
differential in the transverse momenta of the three leading jets. The data
sample was collected with the D0 detector at the ... | hep-ex |
Search for Standard Model Higgs in WH->lvbb at the Tevatron: We present a search for the Standard Model Higgs boson produced in
association with a W boson in $p\bar{p}$ collisions at a center-of-mass energy
of $\sqrt{s} = 1.96$ TeV. The search is performed in the $WH\to \ell\nu
b\bar{b}$ channel using 2.7 fb$^{-1}$ of ... | hep-ex |
A search for flavor-changing non-standard neutrino interactions by MINOS: We report new constraints on flavor-changing non-standard neutrino
interactions (NSI) using data from the MINOS experiment. We analyzed a combined
set of beam neutrino and antineutrino data, and found no evidence for
deviations from standard neut... | hep-ex |
Observation of $D^+\toηηπ^+$ and improved measurement of
$D^{0(+)}\toηπ^+π^{-(0)}$: Using an $e^+e^-$ annihilation data sample corresponding to an integrated
luminosity of $2.93\,\rm fb^{-1}$ collected at the center-of-mass energy of
3.773\,GeV with the BESIII detector, we measure the absolute branching
fractions of ... | hep-ex |
Search for the charged lepton flavor violating decay $J/ψ\to eτ$: A search for the charged lepton flavor violating decay $J/\psi\to
e^{\pm}\tau^{\mp}$ with $\tau^{\mp} \to \pi^{\mp}\pi^0\nu_{\tau}$ is performed
with about $10$ billion $J/ \psi$ events collected with the BESIII detector at
the BEPCII. No significant sig... | hep-ex |
High momentum particle and jet production in photon-photon collisions: Jet and particle production have been studied in collisions of quasi-real
photons collected during the LEP2 program. OPAL and DELPHI report good
agreement of NLO perturbative QCD with the measured differential di-jet cross
sections, which reach a me... | hep-ex |
Double Helicity Asymmetries of Forward Neutral Pions from $\sqrt{s}=510$
GeV $pp$ Collisions at STAR: Longitudinally polarized $p+p$ scattering experiments provide access to gluon
polarization via measurement of the double helicity asymmetry, $A_{LL}$. At the
completion of the 2013 RHIC running period, a significant ... | hep-ex |
Study of di-pion bottomonium transitions and search for the h_b(1P)
state: We study inclusive di-pion decays using a sample of 108 x 10^6 Upsilon(3S)
events recorded with the BABAR detector. We search for the decay mode
Upsilon(3S) --> pi+ pi- h_b(1P) and find no evidence for the bottomonium
spin-singlet state h_b(1P... | hep-ex |
Measuring the tau polarization at ILC: Measurement of the tau lepton polarization in \eett\ is an important
electro-weak measurement at ILC and other future electron-positron colliders.
In this paper we discuss several methods to extract polarimeter information for
\eett\ events at the nominal centre-of-mass energy, an... | hep-ex |
Review on reactor neutrino present and future: Nuclear reactors are an essential source of neutrinos. In this proceeding, I
review the past and current status of the research on neutrino oscillations
using reactor neutrinos. I also present a promising idea for positron tagging
that will potentially be a game-changer in... | hep-ex |
Heavy Flavour Physics at HERA: New results with increased statistics are presented for heavy flavour
production at Q2<150 Gev2 and in the photoproduction limit Q2-->0. Cross
sections for Dstar production, F2charm, the gluon density in the proton, and
inelastic J/psi production are discussed and compared to theoretical
... | hep-ex |
Time-Integrated Luminosity Recorded by the BABAR Detector at the PEP-II
e+e- Collider: We describe a measurement of the time-integrated luminosity of the data
collected by the BABAR experiment at the PEP-II asymmetric-energy e+e- collider
at the Upsilon(4S), Upsilon(3S) and Upsilon(2S) resonances and in a continuum
r... | hep-ex |
Introduction to HOBIT, a b-Jet Identification Tagger at the CDF
Experiment Optimized for Light Higgs Boson Searches: We present the development and validation of the Higgs Optimized b
Identification Tagger (HOBIT), a multivariate b-jet identification algorithm
optimized for Higgs boson searches at the CDF experiment ... | hep-ex |
Measurement of top quark pair production in association with a Z boson
in proton-proton collisions at $\sqrt{s} =$ 13 TeV: A measurement of the inclusive cross section of top quark pair production in
association with a Z boson using proton-proton collisions at a center-of-mass
energy of 13 TeV at the LHC is performed... | hep-ex |
New results from VES: The results of the patial wave analysis(PWA) of the pi+pi-pi- and omegapi-pi0
systems are presented. The a3 and a4(2040) signals are observed in the
rho(770)pi and f2(1270)pi channels. Indications of the a1' meson existence was
found in the 1+0+ rhopi S-wave. The decay branching ratio of the a2(13... | hep-ex |
Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of
summer 2014: This article reports world averages of measurements of $b$-hadron,
$c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavor Averaging
Group (HFAG) using results available through summer 2014. For the averaging,
common input ... | hep-ex |
Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$: We present a measurement of angular observables, $P_4'$, $P_5'$, $P_6'$,
$P_8'$, in the decay $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$, where
$\ell^+\ell^-$ is either $e^+e^-$ or $\mu^+\mu^-$. The analysis is performed on
a data sample corresponding to an integrat... | hep-ex |
Muon Decay Asymmetries from $K^0_L \to π^0 μ^+ μ^-$ Decays: We have examined the decay $K^0_L \to \pi^0 \mu^+ \mu^-$ in which the
branching ratio, the muon energy asymmetry and the muon decay asymmetry could
be measured. In particular, we find that within the Standard Model the
longitudinal polarization ($P_L$) of the ... | hep-ex |
Measurement of hard double-parton interactions with the ATLAS detector: The production of W boson in association with two jets in proton-proton
collisions at the LHC with a centre-of-mass energy of $\sqrt{s}$ = 7 TeV has
been investigated using data collected with the ATLAS detector. The fraction of
events arising from... | hep-ex |
Measurements of $A_{CP}(B^0\rightarrow K^+ π^-)$ and
$A_{CP}(B_s\rightarrow π^+ K^-)$ at LHCb: The LHCb experiment is designed to perform flavour physics measurements at
the Large Hadron Collider. Using data collected during the 2010 run, we
reconstruct a sample of $H_b\rightarrow h^+h'^-$ decays, where $H_b$ can be
... | hep-ex |
Simulations of neutron background in a time projection chamber relevant
to dark matter searches: Presented here are results of simulations of neutron background performed for
a time projection chamber acting as a particle dark matter detector in an
underground laboratory. The investigated background includes neutrons... | hep-ex |
Planning the Future of U.S. Particle Physics (Snowmass 2013): Chapter 8:
Instrumentation Frontier: These reports present the results of the 2013 Community Summer Study of the
APS Division of Particles and Fields ("Snowmass 2013") on the future program of
particle physics in the U.S. Chapter 8, on the Instrumentation ... | hep-ex |
Probe of soft-QCD in minimum bias events of pp collisions with the ATLAS
at the LHC: The study of the minimum-bias charged-particle distributions is reviewed. The
data are obtained using the ATLAS detector at the LHC in proton-proton
collisions at the centre-of-mass energies from 0.9 to13 TeV. The particles are
requi... | hep-ex |
Measurement of the branching fractions for Cabibbo-suppressed decays
$D^{+}\to K^{+} K^{-}π^{+}π^{0}$ and $D_{(s)}^{+}\to
K^{+}π^{-}π^{+}π^{0}$ at Belle: We present measurements of the branching fractions for the singly
Cabibbo-suppressed decays $D^+\to K^{+}K^{-}\pi^{+}\pi^{0}$ and $D_s^{+}\to
K^{+}\pi^{-}\pi^{+}\... | hep-ex |
Observation of WZ Production: We report the first observation of the associated production of a W boson and
a Z boson. This result is based on 1.1 fb-1 of integrated luminosity from ppbar
collisions at sqrt{s} = 1.96 TeV collected with the CDF II detector at the
Fermilab Tevatron. We observe 16 WZ candidates passing ou... | hep-ex |
Measurement of the $\boldsymbol{W}$ Boson Production Charge Asymmetry in
$\boldsymbol{p\bar{p}\rightarrow W+X \rightarrow eν+X}$ Events at
$\boldsymbol{\sqrt{s}=1.96}$ TeV: We present a measurement of the $W$ boson production charge asymmetry in
$p\bar{p}\rightarrow W+X \rightarrow e\nu +X$ events at a center of ma... | hep-ex |
Cross section measurement of $e^{+}e^{-} \to K_{S}^{0}K_{L}^{0}$ at
$\sqrt{s}=2.00-3.08~{\rm GeV}$: The cross sections of the process $e^{+}e^{-} \to K_{S}^{0}K_{L}^{0}$ are
measured at fifteen center-of-mass energies $\sqrt{s}$ from $2.00$ to
$3.08~{\rm GeV}$ with the BESIII detector at the Beijing Electron Positron... | hep-ex |
Simultaneous measurements of the $t\bar{t}$, $W^+W^-$, and
$Z/γ^{*}\rightarrowττ$ production cross-sections in $pp$
collisions at $\sqrt{s} = 7$ TeV with the ATLAS detector: Simultaneous measurements of the $t\bar{t}$, $W^+W^-$, and
$Z/\gamma^{*}\rightarrow\tau\tau$ production cross-sections using an integrated
lum... | hep-ex |
New Resonances and Meson Spectroscopy at BaBar and Belle: We present a short review on the recent progresses that have been made in
meson spectroscopy. We discuss the experimental discoveries made at the BaBar
and Belle experiments, as well as the possible interpretations of the new
resonances. | hep-ex |
Four-gap glass RPC as a candidate to a large area thin time-of-flight
detector: A four-gap glass RPC with 0.3mm gap size was tested with hadron beam as a
time-of-flight detector having a time resolution of ~ 100ps. A thickness of the
detector together with front-end electronics is ~ 12mm. Results on time
resolution d... | hep-ex |
Signal detection using biphotons and potential application in axion-like
particle search: This paper presents a new optical system for detecting light signals
associated with the change in incoming photon number. The system employs
quantum correlation of photon pairs created via spontaneous parametric
down-conversion... | hep-ex |
Analytical considerations for optimal axion haloscope design: The cavity haloscope provides a highly sensitive method to search for dark
matter axions in the microwave regime. Experimental attempts to enhance the
sensitivity have focused on improving major aspects, such as producing strong
magnetic fields, increasing c... | hep-ex |
Determination of |Vcb| using the semileptonic decay \bar{B}^0 -->
D^{*+}e^-\barν: We present a measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix
element |Vcb| using a 10.2 fb^{-1} data sample recorded at the \Upsilon(4S)
resonance with the Belle detector at the KEKB asymmetric e^+e^- storage ring.
By extrapol... | hep-ex |
Charge Asymmetry in 1-1000 GeV Electromagnetic Showers and Possibility
of Its Measurementnt: For the high energy electromagnetic showers the thickness dependence of a)
the development of electron and positron components, b) the difference between
the secondary electron and positron numbers, c) the charge asymmetry of... | hep-ex |
Search for scalar leptoquarks produced via $τ$-lepton-quark
scattering in pp collisions at $\sqrt{s}$ = 13 TeV: The first search for scalar leptoquarks produced in $\tau$-lepton-quark
collisions is presented. It is based on a set of proton-proton collision data
recorded with the CMS detector at the LHC at a center-of... | hep-ex |
High luminosity fixed-target experiment at the LHC: By extracting the beam with a bent crystal or by using an internal gas
target, the multi-TeV proton and lead LHC beams allow one to perform the most
energetic fixed-target experiments ever and to study $pp$, $p$d and $p$A
collisions at $\sqrt{s_{NN}}=115$ GeV and Pb$p... | hep-ex |
Snowmass 2021 Dark Matter Complementarity Report: The fundamental nature of Dark Matter is a central theme of the Snowmass 2021
process, extending across all Frontiers. In the last decade, advances in
detector technology, analysis techniques and theoretical modeling have enabled
a new generation of experiments and sear... | hep-ex |
Determination of the QCD color factor ratio CA/CF from the scale
dependence of multiplicity in three jet events: I examine the determination of the QCD color factor ratio CA/CF from the
scale evolution of particle multiplicity in e+e- three jet events. I fit an
analytic expression for the multiplicity in three jet ev... | hep-ex |
Search for b--> u transitions in B- -> [K+pi-pi0]_D K-: We search for decays of a B meson into a neutral D meson and a kaon, with the
D meson decaying into K+pi-pi0. This final state can be reached through the b
--> c transition B- -> D0K- followed by the doubly Cabibbo-suppressed D0 -->
K+pi-pi0, or the b --> u transi... | hep-ex |
Measurement of the $H \to γγ$ and $H \to ZZ^* \to 4 \ell$
cross-sections in $pp$ collisions at $\sqrt{s}=13.6$ TeV with the ATLAS
detector: The inclusive Higgs boson production cross-section is measured in the
di-photon and the $ZZ^* \to 4 \ell$ decay channels using 31.4 and 29.0
fb$^{-1}$ of $pp$ collision data re... | hep-ex |
Form Factor Fit for e^+e^- to pi^+pi^-pi^+pi^-: The cross section of e^+e^- to pi^+pi^-pi^+pi^- has been measured by BABAR
collaboration. We apply the theoretical cross section deduced from the extended
VMD (VectorMeson Dominance) model to fit these experimental data. The relevant
parameters and the isovector form fact... | hep-ex |
Measurements of the 125 GeV Higgs boson at CMS: Results of the measurements of the 125 GeV Higgs boson properties with
proton-proton collision data at $\sqrt{s}=13$ TeV collected by CMS detector are
presented. The used Higgs boson decay channels include the five major decay
modes, $\mathrm{H}\rightarrow\gamma\gamma$, $... | hep-ex |
A Measurement of the Proton Structure Function $F_{\!2}(x,Q^2)$: A measurement of the proton structure function $F_{\!2}(x,Q^2)$ is reported
for momentum transfer squared $Q^2$ between 4.5 $GeV^2$ and 1600 $GeV^2$ and
for Bjorken $x$ between $1.8\cdot10^{-4}$ and 0.13 using data collected by the
HERA experiment H1 in 1... | hep-ex |
Search for pair production of Higgs bosons in the $b\bar{b}b\bar{b}$
final state using proton--proton collisions at $\sqrt{s} = 13$ TeV with the
ATLAS detector: A search for Higgs-boson pair production in the $b\bar{b}b\bar{b}$ final
state is carried out with 3.2 fb$^{-1}$ of proton--proton collision data
collected... | hep-ex |
Results on alpha_s and QCD from (and Above) the Z0: Measurements of alpha_s from e+e- annihilation experiments are reviewed and
compared with measurements from other processes. Highlights are presented of
recent QCD studies in e+e- annihilation at the Z0 resonance. | hep-ex |
The $φ(1020)\toπ^0π^0γ$ decay: In the SND experiment at VEPP-2M $e^+e^-$ collider the
$\phi(1020)\to\pi^0\pi^0\gamma$ decay was studied and its branching ratio was
measured: $B(\phi\to\pi^0\pi^0\gamma)=(1.221\pm 0.098\pm0.061)\cdot10^{-4}$. It
was shown, that $f_0(980)\gamma$ intermediate state dominates in this decay ... | hep-ex |
α_S from LEP: Recent results on measurements of the strong coupling $\alpha_S$ from LEP are
reported. These include analyses of the 4-jet rate using the Durham or
Cambridge algorithm, of hadronic $Z^0$ decays with hard final state photon
radiation, of scaling violations of the fragmentation function, of the
longitudina... | hep-ex |
Search for an anomalous excess of charged-current $ν_e$ interactions
without pions in the final state with the MicroBooNE experiment: This article presents a measurement of $\nu_e$ interactions without pions in
the final state using the MicroBooNE experiment and an investigation into the
excess of low-energy electrom... | hep-ex |
Studies of Quantum-Mechanical Coherency Effects in Neutrino-Nucleus
Elastic Scattering: Neutrino-nucleus elastic scattering ($\nu {\rm A}_{el}$) provides a unique
laboratory to study the quantum-mechanical (QM) coherency effects in
electroweak interactions. The deviations of the cross-sections from those of
completel... | hep-ex |
Measurement of charged-particle spectra in Pb+Pb collisions at
$\sqrt{{s}_\mathsf{NN}} = 2.76$ TeV with the ATLAS detector at the LHC: Charged-particle spectra obtained in 0.15 nb${}^{-1}$ of Pb+Pb interactions
at $\sqrt{{s}_\mathsf{{NN}}}=2.76$TeV and 4.2 pb${}^{-1}$ of pp interactions at
$\sqrt{s}=2.76$ TeV with th... | hep-ex |
Measurement of the polarization amplitudes and triple product
asymmetries in the B_s^0 -> phi phi decay: Using 1.0 fb^{-1} of pp collision data collected at a centre-of-mass energy
of sqrt{s}=7 TeV with the LHCb detector, measurements of the polarization
amplitudes, strong phase difference and triple product asymmetr... | hep-ex |
Search for High-Mass States with Lepton Plus Missing Transverse Energy
Using the ATLAS Detector at Center-of-Mass Energy of 7 TeV: The ATLAS detector has been used to search for high-mass states decaying into
a single high momentum lepton and missing transverse energy, such as new heavy
charged gauge bosons. The late... | hep-ex |
Measurements of $t$-channel single top-quark production cross sections
at $\sqrt{s} = 7$ TeV with the ATLAS detector: This article presents measurements of the $t$-channel single top-quark ($t$)
and top-antiquark ($\bar{t}$) total production cross sections $\sigma(tq)$ and
$\sigma(\bar{t}q)$, their ratio $R_t=\sigma(... | hep-ex |
Observation of B_s0->D_s*- pi+, B_s0->D_s(*)- rho+ Decays and
Measurement of B_s0->D_s*- rho+ Polarization: First observations of the B_s0->D_s*- pi+, B_s0->D_s- rho+ and B_s0->D_s*-
rho+ decays are reported together with measurements of their branching
fractions: B(B_s0->D_s*- pi+)=(2.4 +0.5-0.4(stat.) +-0.3(syst.)
... | hep-ex |
Observation of a resonance X(1835) in J/ψ--> γπ^+ π^-
η^{\prime}: The decay channel J/\psi --> \gamma \pi^+ \pi^- \eta^{\prime} is analyzed
using a sample of 5.8\times 10^7 J\psi events collected with the BESII
detector. A resonance, the X(1835), is observed in the \pi^+ \pi^-
\eta^{\prime} invariant mass spectrum wi... | hep-ex |
Study of the Reaction $np \rightarrow np π^+ π^-$ at Intermediate
Energies: The reaction $np \rightarrow np \pi^+ \pi^-$ was studied at the various
momenta of incident neutrons. It was shown that the characteristics of the
reaction at the momenta above 3 GeV/c could be described by the model of
reggeized $\pi$ exchan... | hep-ex |
A Measurement of CP Asymmetry in b->sgamma using a Sum of Exclusive
Final States: We perform a measurement of the CP asymmetry in b->sgamma decays using a
sample of 383 BB events collected by the BABAR detector at the PEP-II
asymmetric B factory. We reconstruct sixteen flavor-specific B decay modes
containing a high-... | hep-ex |
Moriond 2012, QCD and High Energy Interactions: Baryonic B decays at
BaBar: We report on the analyses of the baryonic B decays B0bar -> LambdaC+ p- p+ p-
and B- -> SigmaC++ p- pi- pi-. The underlying data sample consists of 470 x
10^6 BBbar pairs generated in the process e+e- -> Y(4S) and collected with the
BaBar det... | hep-ex |
Unambiguously Resolving the Potential Neutrino Magnetic Moment Signal at
Large Liquid Scintillator Detectors: Non-vanishing electromagnetic properties of the neutrinos have been predicted
by many theories beyond the Standard Model, and an enhanced neutrino magnetic
moment can have profound implications for fundamenta... | hep-ex |
Light Hadron Spectroscopy and Decay at BESIII: Light hadron spectroscopy plays an important role in understanding the decay
dynamics of unconventional hadronic states, such as strangeonium and glueballs.
BESIII provides an ideal avenue to search for these exotic states thanks to a
huge amount of data recorded at variou... | hep-ex |
Search for top squarks in final states with two top quarks and several
light-flavor jets in proton-proton collisions at $\sqrt{s} =$ 13 TeV: Many new physics models, including versions of supersymmetry characterized by
$R$-parity violation (RPV), compressed mass spectra, long decay chains, or
additional hidden sector... | hep-ex |
Updated Combination of CDF and D0 Searches for Standard Model Higgs
Boson Production with up to 10.0 fb-1 of Data: We combine results from the CDF and D0 Collaborations on direct searches for
the standard model (SM) Higgs boson (H) in ppbar collisions at the Fermilab
Tevatron at sqrt(s)=1.96 TeV. Compared to the prev... | hep-ex |
A study of topological vertexing for heavy quark tagging: We compare heavy quark tagging and anti-tagging efficiencies for vertex
detectors with different inner raddi using the topological vertex technique
developed at the SLC/SLD experiment. Charm tagging benefits by going to very
small inner radii. | hep-ex |
Measurements of Higgs boson properties in the diphoton decay channel in
proton-proton collisions at $\sqrt{s} =$ 13 TeV: Measurements of Higgs boson properties in the H $\to\gamma\gamma$ decay
channel are reported. The analysis is based on data collected by the CMS
experiment in proton-proton collisions at $\sqrt{s} ... | hep-ex |
The "Golden Mode" at the Upgraded Tevatron?: The exiatence of extra SM families results in essential enhancement of the
gluon fusion channel Higgs boson production at hadron colliders. In this case,
the SM Higgs boson can be seen at the upgraded Tevatron via the "golden mode"
(H-->4l) for certain values of its mass. | hep-ex |
The LHCB Commissioning: The LHCb experiment is dedicated to precision measurements of CP violation
and rare decays of B hadrons at the Large Hadron Collider (LHC) at CERN. The
LHCb installation has been finished in spring 2008 and an intensive testing and
commissioning of the system has been started. An overview and th... | hep-ex |
Measurement of Trilinear Gauge Boson Couplings WWV, (V = Z,gamma) in
e+e- Collisions at 189 GeV: Measurements of the trilinear gauge boson couplings WWgamma and WWZ are
presented using the data taken by DELPHI in 1998 at a centre-of-mass energy of
189 GeV and combined with DELPHI data at 183 GeV. Values are determine... | hep-ex |
Measurements of the reaction $\bar{p}p \to φη$ of antiproton
annihilation at rest at three hydrogen target densities: The proton-antiproton annihilation at rest into the $\phi\eta$ final state
was measured for three different target densities: liquid hydrogen, gaseous
hydrogen at NTP and at a low pressure of 5 mbar. ... | hep-ex |
Evidence for new interference phenomena in the decay D+ to K- pi+ mu+ nu: Using a large sample of charm semileptonic decays collected by the FOCUS
photoproduction experiment at Fermilab, we present evidence for a small, even
spin K- \pi+ amplitude that interferes with the dominant K*0 component in the
K-pi+ mu- nu fina... | hep-ex |
New PVLAS results and limits on magnetically induced optical rotation
and ellipticity in vacuum: IIn 2006 the PVLAS collaboration reported the observation of an optical
rotation generated in vacuum by a magnetic field. To further check against
possible instrumental artifacts several upgrades to the PVLAS apparatus ha... | hep-ex |
Search for the Weak Decay of a Lightly Bound H Dibaryon: We present results of a search for a neutral, six-quark, dibaryon state
called the \h, a state predicted to exist in several theoretical models.
Observation of such a state would signal the discovery of a new form of
hadronic matter. Analyzing data collected by e... | hep-ex |
Precision Measurement of B(D+ -> mu+ nu) and the Pseudoscalar Decay
Constant fD+: We measure the branching ratio of the purely leptonic decay of the D+ meson
with unprecedented precision as B(D+ -> mu+ nu) = (3.82 +/- 0.32 +/-
0.09)x10^(-4), using 818/pb of data taken on the psi(3770) resonance with the
CLEO-c detect... | hep-ex |
Observation of two resonances in the $Λ_b^0 π^\pm$ systems and
precise measurement of $Σ_b^\pm$ and $Σ_b^{*\pm}$ properties: The first observation of two structures consistent with resonances in the
final states $\Lambda_b^0 \pi^-$ and $\Lambda_b^0 \pi^+$ is reported using
samples of $pp$ collision data collected by ... | hep-ex |
Transverse Spin Studies with STAR at RHIC: STAR has observed sizable transverse single-spin asymmetries for inclusive
pi^0 production at forward rapidity in p+p collisions at sqrt{s}=200 GeV. These
asymmetries may arise from either the Sivers or Collins effect. Studies are
underway during the current RHIC run to elucid... | hep-ex |
Probing the BFKL dynamics at hadronic colliders: We describe different possibilities to probe the BFKL dynamics at hadronic
colliders, namely Mueller-Navelet jet, and jet gap jet events. We also discuss
briefly the jet veto measurement as performed by the ATLAS collaboration at the
LHC. | hep-ex |
Measurements of top-quark pair to $Z$-boson cross-section ratios at
$\sqrt s = 13, 8, 7$TeV with the ATLAS detector: Ratios of top-quark pair to $Z$-boson cross sections measured from
proton--proton collisions at the LHC centre-of-mass energies of $\sqrt
s=13$TeV, 8TeV, and 7TeV are presented by the ATLAS Collaborati... | hep-ex |
The indication for $^{40}$K geo-antineutrino flux with Borexino
phase-III data: We provide the indication of high flux of $^{40}$K geo-antineutrino and
geo-neutrino ($^{40}$K-geo-($\bar{\nu} + \nu$)) with Borexino Phase III data.
This result was obtained by introducing a new source of single events, namely
$^{40}$K-g... | hep-ex |
Observation of new baryons in the $Ξ_b^-π^+π^-$ and
$Ξ_b^0π^+π^-$ systems: The first observation and study of two new baryonic structures in the final
state $\Xi_b^0\pi^+\pi^-$ and the confirmation of the $\Xi_b(6100)^-$ state in
the $\Xi_b^-\pi^+\pi^-$ decay mode are reported using proton-proton collision
data colle... | hep-ex |
Review of physics results from the Tevatron: QCD physics: We present a summary of results from studies of quantum chromodynamics at the
Fermilab Tevatron collider by the CDF and the D0 experiments. These include Run
II results for the time period up to the end of Summer 2014. A brief
description of Run I resultsis also... | hep-ex |
Search for WH associated production at Dø Tevatron: The Higgs mechanism introduced in 1964 gives a satisfactory solution to a
major problem of the standard model of elementary particles: the origin of the
mass. It predicts the existence of the Higgs scalar boson, which has not been
discovered experimentally yet. The Te... | hep-ex |
Experimental results on $K_L$ decays: Recent measurements by the NA48 at CERN of selected $K_L$ decays are
presented. These are the branching ratios and form factors for channels $K_L\to
\pi^{\pm}\pi^0\e^{\mp}\nu_e$ (final result), $K_L\to\pi^{\pm}e^{\mp}\nu_e$ and
$K_L\to e^+e^-e^+e^-$ (preliminary results). | hep-ex |
Measurement of the production cross section for $Z/γ^*$ in
association with jets in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS
Detector: We present results on the production of jets of particles in association with
a $Z/\gamma^*$ boson, in proton-proton collisions at $\sqrt{s} = 7$ TeV with
the ATLAS detect... | hep-ex |
Future Polarised DIS Fixed Target Experiments: New experiments in polarised deep inelastic scattering will mainly
concentrate on the measurement of semi-inclusive asymmetries. Especially, the
upgraded HERMES experiment at DESY and the newly build COMPASS experiment at
CERN will investigate the gluon polarisation via op... | hep-ex |
Search for a Charged Higgs Boson Produced in the Vector-boson Fusion
Mode with Decay $H^\pm \to W^\pm Z$ using $pp$ Collisions at $\sqrt{s}=8$ TeV
with the ATLAS Experiment: A search for a charged Higgs boson, $H^\pm$, decaying to a $W^\pm$ boson and
a $Z$ boson is presented. The search is based on 20.3 fb$^{-1}$ o... | hep-ex |
First background-free limit from a directional dark matter experiment:
results from a fully fiducialised DRIFT detector: The addition of O2 to gas mixtures in time projection chambers containing CS2
has recently been shown to produce multiple negative ions that travel at
slightly different velocities. This allows a m... | hep-ex |
Search for a Higgs Boson Decaying into Two Photons at LEP: A Higgs particle produced in association with a Z boson and decaying into two
photons is searched for in the data collected by the L3 experiment at LEP. All
possible decay modes of the Z boson are investigated. No signal is observed in
447.5 pb^-1 of data recor... | hep-ex |
Evidence for the direct decay of the 125 GeV Higgs boson to fermions: The discovery of a new boson with a mass of approximately 125 GeV in 2012 at
the LHC has heralded a new era in understanding the nature of electroweak
symmetry breaking and possibly completing the standard model of particle
physics. Since the first o... | hep-ex |
Search for Leptoquarks in Electron-Photon Scattering at sqrt(s_ee) up to
209 GeV at LEP: Searches for first generation scalar and vector leptoquarks, and for squarks
in R-parity violating SUSY models with the direct decay of the squark into
Standard Model particles, have been performed using e+e- collisions collected... | hep-ex |
Search for Electron Neutrino Appearance in a 250 km Long-baseline
Experiment: We present a search for electron neutrino appearance from accelerator
produced muon neutrinos in the K2K long baseline neutrino experiment. One
candidate event is found in the data corresponding to an exposure of 4.8*10^19
protons on target... | hep-ex |
Search for high-mass resonances in final states with a lepton and
missing transverse momentum at $\sqrt{s}=$ 13 TeV: A search for new high-mass resonances in proton-proton collisions having
final states with an electron or muon and missing transverse momentum is
presented. The analysis uses proton-proton collision da... | hep-ex |
Measurement of the effective weak mixing angle at the CEPC: We present a study of the measurement of the effective weak mixing angle
parameter ($\sin^2\theta^{\ell}_\text{eff}$) at the Circular Electron Positron
Collider (CEPC). As a fundamental physics parameter,
$\sin^2\theta^{\ell}_\text{eff}$ plays a key role not o... | hep-ex |
Total Cross Section in gamma gamma Collisions at LEP: The reaction e+e- -> e+e- gamma* gamma* -> e+e- hadrons for quasi-real
photons is studied using data from root(s) = 183 GeV up to 202 GeV.
Results on the total cross sections sigma(e+e- -> e+e- hadrons) and sigma(+e-
gamma* gamma* -> e+e- hadrons) are given for th... | hep-ex |
Measurement of associated production of vector bosons and top
quark-antiquark pairs at sqrt(s) = 7 TeV: The first measurement of vector-boson production associated with a top
quark-antiquark pair in proton-proton collisions at sqrt(s) = 7 TeV is
presented. The results are based on a data set corresponding to an integ... | hep-ex |
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