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Polyakov Loop at Finite Temperature in Chiral Quark Models: At finite temperature, chiral quark models do not incorporate large gauge
invariance which implies genuinely non-perturbative finite temperature gluonic
degrees of freedom. Motivated by this observation, we describe how the coupling
of the Polyakov loop as an ... | hep-ph |
Systematics of parton-medium interaction from RHIC to LHC: Despite a wealth of experimental data for high-P_T processes in heavy-ion
collisions, discriminating between different models of hard parton-medium
interactions has been difficult. A key reason is that the pQCD parton spectrum
at RHIC is falling so steeply that... | hep-ph |
Matching the Low and High Energy Determinations of $α_s(M_z)$ in
the MSSM: Recent calculations of supersymmetric corrections to the conflicting ratios
$R_b$ and $R_c$ have shown that an alleged discrepancy between the SM
predictions of these observables and the corresponding experimental values can
be cured in the MS... | hep-ph |
Model-Independent Global Constraints on New Physics: Using effective-lagrangian techniques we perform a systematic survey of the
lowest-dimension effective interactions through which heavy physics might
manifest itself in present experiments. We do not restrict ourselves to special
classes of effective interactions (su... | hep-ph |
Meson-like Baryons and the Spin-Orbit Puzzle: I describe a special class of meson-like \Lambda_Q excited states and present
evidence supporting the similarity of their spin-independent spectra to those
of mesons. I then examine spin-dependent forces in these baryons, showing that
predicted effects of spin-orbit forces ... | hep-ph |
The mass spectrum and strong decays of isoscalar tensor mesons: In this work, we present a systematic study of the observed isoscalar tensor
$f_2$ states. With the detailed analysis of the mass spectrum and calculation
of the $f_2$ two-body strong decays, we extract information of their underly
structures, and try to c... | hep-ph |
Bayesian fit analysis to full distribution data of $\bar B \to D^{(*)}
\ell\barν$: $|V_{cb}|$ determination and New Physics constraints: We investigate the semi-leptonic decays of $\bar B \to D^{(*)} \ell\bar\nu$
in terms of the Heavy-Quark-Effective-Theory (HQET) parameterization for the
form factors, which is descr... | hep-ph |
The electromagnetic Sigma-to-Lambda hyperon transition form factors at
low energies: Using dispersion theory the low-energy electromagnetic form factors for the
transition of a Sigma to a Lambda hyperon are related to the pion vector form
factor. The additionally required input, i.e. the two-pion--Sigma--Lambda
ampli... | hep-ph |
Search for New Physics in Rare Top Decays: Top physics provides a fertile ground for new-physics searches. At present,
most top observables appear to be in good agreement with the respective
Standard Model predictions. However, in the case of decay modes that are
suppressed in the Standard Model, new-physics contributi... | hep-ph |
Pair Production of Doubly-Charged Scalars: Neutrino Mass Constraints and
Signals at the LHC: We study the pair production of doubly charged Higgs bosons at the Large
Hadron Collider (LHC), assuming the doubly charged Higgs to be part of an
SU(2)_L triplet which generates Majorana masses for left-handed neutrinos. Suc... | hep-ph |
Gluon Radiation in $t\bar t$ Production and Decay at the LHC: Understanding the pattern of gluon radiation in $t \bar t$ production and
decay processes is important for making an accurate determination of the top
mass from the momenta of its decay products. The larger energy of the LHC $pp$
collider boosts the top cros... | hep-ph |
A bound on Universal Extra Dimension Models from up to 2fb^{-1} of LHC
Data at 7TeV: The recent up to 2fb^{-1} of data from the ATLAS and CMS experiments at the
CERN Large Hadron Collider at 7TeV put an upper bound on the production cross
section of a Higgs-like particle. We translate the results of the H -> WW -> l
... | hep-ph |
The Top Quark and other Fermion Masses: Recent developments on approaches to the quark lepton mass problem are
reviewed. In particular we discuss dynamical calculations of the top quark mass
at (a) the infrared quasifixed point of the Minimal Supersymmetric Standard
Model renormalisation group equations, and (b) a stro... | hep-ph |
Vector-like Quarks: In this talk we emphasise the importance of vector-like quarks (VLQs) and
their potential to solve some of the open questions of the Standard Model.
These are, in some sense minimal extensions of the Standard Model, that can be
probed in the next round of experiments. We also make an analogy between... | hep-ph |
Matter-antimatter origin of cosmic magnetism: We explore the hypothesis that the abundant presence of relativistic
antimatter (positrons) in the primordial universe is the source of the
intergalactic magnetic fields we observe in the universe today. We evaluate
both Landau diamagnetic and magnetic dipole moment paramag... | hep-ph |
B^0_{d,s} - \bar{B}^0_{d,s} mixing in the model III 2HDM: In the model III 2HDM there are new CP violating phases which would affect
the $B_{d,s}^0 - \bar{B}_{d,s}^0$ mixing. In this paper, we calculate the new
physics contributions to the neutral B meson mass splitting $\Delta M_{B_q}$
(q=d, s) at the next-to-leading ... | hep-ph |
Phenomenology of light remnant doubly charged Higgs fields in the
supersymmetric left-right model: It has recently shown that in supersymmetric left-right models with automatic
R-parity conservation, the theory below the $W_R$ scale is given by MSSM with
massive neutrinos and a pair of doubly charged superfields with... | hep-ph |
Jet angularities in photoproduction at the Electron-Ion Collider: We consider the one-parameter family of jet substructure observables known as
angularities using the specific case of inclusive jets arising from
photoproduction events at an Electron-Ion Collider (EIC). We perform numerical
calculations at next-to-leadi... | hep-ph |
What the Tevatron Found?: The CDF collaboration has reported a 4.1\sigma\ excess in their lepton,
missing energy, and dijets channel. This excess, which takes the form of an
approximately Gaussian peak centered at a dijet invariant mass of 147 GeV, has
provoked a great deal of experimental and theoretical interest. Alt... | hep-ph |
Probing top-partners in Higgs + jets: Fermionic top-partners arise in models such as Composite Higgs and Little
Higgs. They modify Higgs properties, in particular how the Higgs couples to top
quarks. Alas, there is a low-energy cancellation acting in the coupling of the
Higgs boson to gluons and photons. As a result of... | hep-ph |
Vortex Production in a First Order Phase-Transition at Finite
Temperature: We simulate the production of vortices in a first order phase transition at
finite temperature. The transition is carried out by randomly nucleating
critical bubbles and the effects of thermal fluctuations (which could be
relevant for vortex p... | hep-ph |
Confinement and complex singularities in QED3: The standard approximations of the Dyson--Schwinger equation lead to complex
singularities of the fermion propagator. In three-dimensional QED one can show
that this phenomenon might be related to confinement: a confining potential
leads to mass-like singularities at compl... | hep-ph |
Radiative jet energy loss in a three-dimensional hydrodynamical medium
and high $p_T$ azimuthal asymmetry of $π_0$ suppression at mid and forward
rapidity at RHIC: The nuclear modification factor $R_{AA}$ for $\pi_0$ production in Au+Au
collisions at $\sqrt{s}=200$ AGeV is calculated, and studied at high transverse... | hep-ph |
Intrinsic three-body nuclear interaction from a constituent quark model: We study the short distance part of the intrinsic three-nucleon interaction
in a constituent quark model with color-spin interaction. For that purpose we
first calculate the transformation coefficient between the tribaryon
configuration and their ... | hep-ph |
Direct detection of freeze-in inelastic dark matter: We show that the current sensitivities of direct detection experiments have
already reached the interesting parameter space of freeze-in dark matter models
if the dark sector is in the inelastic dark matter framework and the excited
dark matter state is cosmologicall... | hep-ph |
On the LHC sensitivity for non-thermalised hidden sectors: We show under rather general assumptions that hidden sectors that never reach
thermal equilibrium in the early Universe are also inaccessible for the LHC. In
other words, any particle that can be produced at the LHC must either have been
in thermal equilibrium ... | hep-ph |
The effects of charmonium on the properties of the $1^{++}$ hidden charm
poles in effective field theory: In this study, the properties of the $J^{PC}=1^{++}$ hidden charm poles are
analyzed under the variation of the bare 2P charmonium mass within the
effective field theory proposed in Ref.[1]. The main focus of the... | hep-ph |
The Higgs portal and an unified model for dark energy and dark matter: We examine a scenario where the Higgs boson is coupled to an additional
singlet scalar field which we identify with a quintessence field. We show that
this results in an unified picture of dark matter and dark energy, where dark
energy is the zero-m... | hep-ph |
Opportunities in Neutrino Theory -- a Snowmass White Paper: Neutrino masses are clear evidence for physics beyond the standard model and
much more remains to be understood about the neutrino sector. We highlight some
of the outstanding questions and research opportunities in neutrino theory. We
show that most of these ... | hep-ph |
RECO level \sqrt{s}_{min} and subsystem \sqrt{s}_{min}: improved global
inclusive variables for measuring the new physics mass scale in missing
energy events at hadron colliders: The variable \sqrt{s}_{min} was originally proposed in arXiv:0812.1042 as a
model-independent, global and fully inclusive measure of the ... | hep-ph |
Simulation of Beyond Standard Model Physics in Herwig++: We present a new approach for the simulation of Beyond Standard Model (BSM)
physics within the Herwig++ event generator. Our approach is more generic than
previous methods with the aim of minimising the effort of implementing further
new physics models. Spin corr... | hep-ph |
Hard Photon Pair Production at LEP: The production of photon pairs in $e^+e^-\rightarrow f \bar f \gamma\gamma$
processes is studied using exact helicity amplitudes at tree level. Total cross
sections, including initial state radiation effects, are given. They are
presented in the case of quarks as a function of $y_{\r... | hep-ph |
Nano-Hertz gravitational waves from collapsing domain walls associated
with freeze-in dark matter in light of pulsar timing array observations: Evidence for a stochastic gravitational wave background in the nHz frequency
band is recently reported by four pulsar timing array collaborations NANOGrav,
EPTA, CPTA, and PP... | hep-ph |
Direct Detection is testing Freeze-in: Dark Matter (DM) may belong to a hidden sector that is only feebly
interacting with the Standard Model (SM) and may have never been in thermal
equilibrium in the Early Universe. In this case, the observed abundance of dark
matter particles could have built up through a process kno... | hep-ph |
Massive gluons and quarks and the equation of state obtained from SU(3)
lattice QCD: We analyze recent results of SU(3) lattice QCD calculations with a
phenomenological parametrization for the quark-gluon plasma equation of state
based on a quasi-particle picture with massive quarks and gluons. At high
temperature we... | hep-ph |
Finite size source effects and the correlation of neutrino transition
probabilities through supernova turbulence: (Abridged) The transition probabilities describing the evolution of a
neutrino with a given energy along some ray through a turbulent supernova are
random variates unique to each ray. If the source of the... | hep-ph |
Flavor-dependent U(3) Nambu Jona Lasinio coupling constant: A non-perturbative one gluon exchange quark-antiquark interaction is
considered to compute flavor dependent U(3) Nambu-Jona-Lasinio (NJL)-type
interaction of the form $G_{ij, \Gamma} (\bar{\psi} \lambda_i \Gamma \psi ) (
\bar{\psi} \lambda_j \Gamma \psi)$ for ... | hep-ph |
Simulation of Proton and Iron Induced Extensive Air Showers: The reliable simulation of extensive air showers induced by different primary
particles (e. g. proton, iron, gamma etc.) is of great importance in high
energy cosmic ray research. The CORSIKA is a standard Monte-Carlo simulation
package to simulate the four d... | hep-ph |
Probing Supersymmetric Dark Matter and the Electroweak Sector using
Vector Boson Fusion Processes: A Snowmass Whitepaper: Vector boson fusion (VBF) processes at the Large Hadron Collider (LHC)
provide a unique opportunity to search for new physics with electroweak
couplings. Two studies are presented: (i) A search of... | hep-ph |
Matching to all orders and power corrections in heavy quark effective
theory: This talk reports on various aspects of the divergence of perturbative
expansions in the context of matching QCD onto heavy quark effective theory.
Implications for exclusive and inclusive decays of heavy mesons are discussed. | hep-ph |
Very High Energy Cosmic Rays from Centaurus A: Centaurus A is the nearest radio-loud AGN and is detected from radio to very
high energy gamma-rays. Its nuclear spectral energy distribution shows two
peaks, one in the far-infrared band and another at about 150 keV. By assuming
the second peak is due to the electron sync... | hep-ph |
Leptogenesis as an origin of dark matter and baryon asymmetries in the
E6 inspired SUSY models: We explore leptogenesis within the E6 inspired U(1) extension of the MSSM in
which exact custodial symmetry forbids tree-level flavour-changing transitions
and the most dangerous baryon and lepton number violating operator... | hep-ph |
Universality of traveling waves with QCD running coupling: ``Geometric scaling'', i.e. the dependence of DIS cross-sections on the ratio
Q/Q_S, where Q_S(Y) is the rapidity-dependent \saturation scale, can be
theoretically obtained from universal ``traveling wave'' solutions of the
nonlinear Balitsky-Kovchegov (BK) QCD... | hep-ph |
Axial anomaly and vector meson dominance model: The dispersive representation of axial anomaly leads to the anomaly sum rules
(ASRs), exact nonperturbative relations in QCD. The analytical continuation of
the ASRs to the time-like region is performed. The transition form factors of
$\pi^0$, $\eta$ and $\eta'$ mesons in... | hep-ph |
Flavor-Changing Neutral Current Constraints in Topcolor-Assisted
Technicolor: It is argued that the topcolor models recently proposed by Hill [1] may face
significant constraints from flavor-changing neutral current processes (such as
$B-\bar{B}$ mixing) unless the mixing angles between down-type quarks are
small. Th... | hep-ph |
Exclusive diffractive processes in electron-ion collisions: We present a new technique to calculate the cross-section for diffractive
vector meson production and DVCS in electron-ion collisions based on the dipole
model. The measurement of these processes can provide valuable information on
non-linear QCD phenomena, su... | hep-ph |
A Non-perturbative Treatment of Heavy Quarks and Mesons: A formalism for studying heavy quarks in terms of model Dyson-Schwinger
equations is developed. The formalism is the natural extension of a technique
which has proved successful in a number of studies of light hadron physics. The
dressed heavy quark propagator, c... | hep-ph |
Electroweak Baryogenesis: Concrete in a SUSY Model with a Gauge Singlet: SUSY models with a gauge singlet easily allow for a strong first order
electroweak phase transition (EWPT) if the vevs of the singlet and Higgs fields
are of comparable size. We discuss the profile of the stationary expanding
bubble wall and CP-vi... | hep-ph |
The Y(2175) State in the QCD Sum Rule: We study the mass of the state Y(2175) of J^{PC} = 1^{--} in the QCD sum
rule. We construct both the diquark-antidiquark currents (ss)(s_bar s_bar) and
the meson-meson currents (s_bar s)(s_bar s). We find that there are two
independent currents for both cases, and derive the relat... | hep-ph |
Positronium energy levels at order $m α^7$: Product contributions
in the two-photon-annihilation channel: Ongoing improvements in the measurement of positronium transition intervals
motivate the calculation of the $O(m \alpha^7)$ corrections to these intervals.
In this work we focus on corrections to the spin-singlet... | hep-ph |
Calculation of fragmentation functions in two-hadron semi-inclusive
processes: We investigate the properties of interference fragmentation functions arising
from the emission of two leading hadrons inside the same jet for inclusive
lepton-nucleon deep-inelastic scattering. Using an extended spectator model for
the me... | hep-ph |
Natural Suppression of Proton Decay in Supersymmetric Type III Seesaw
Models: Supersymmetric standard model (MSSM) has two sources of rapid proton decay:
(i) R-parity breaking terms and (ii) higher dimensional Planck induced
B-violating terms; its extensions to include neutrino masses via the type I
seesaw mechanism ... | hep-ph |
Combined constraints on the SUSY parameter space from $Δr$ ~and
Higgs boson search: Combining the constraints coming from the ~$M_W$ ~measurements and the
unsuccesful search for the Higgs boson at LEP we determine in the framework of
MSSM the allowed mass regions for the lighter scalar partner of the top quark.
For a... | hep-ph |
VISH$ν$: a unified solution to five SM shortcomings with a protected
electroweak scale: We propose a Standard Model extension, coined VISH$\nu$ (Variant-axIon Seesaw
Higgs $\nu$-trino), that is an $N_{\text{DW}} = 1$ variation of its
predecessor, the $\nu$DFSZ model. In accounting for the origin of neutrino
masses, d... | hep-ph |
$V_{cb}$ from the semileptonic decay $B\to D \ell \barν_{\ell}$ and
the properties of the $D$ meson distribution amplitude: The improved QCD light-cone sum rule (LCSR) provides an effective way to deal
with the heavy-to-light transition form factors (TFFs). Firstly, we adopt the
improved LCSR approach to deal with th... | hep-ph |
Properties of the Quark Gluon Plasma: A lattice perspective: We discuss results from lattice calculations for a few observables that are
sensitive to different length scales in the high temperature phase of QCD and
can give insight into its non-perturbative structure. We compare lattice
results with perturbative calcul... | hep-ph |
Single Top Production as a Probe of Heavy Resonances: The single top quark final state provides sensitivity to new heavy resonances
produced in proton-proton collisions at the Large Hadron Collider.
Particularly, the single top plus quark final state appears in models with
heavy charged bosons or scalars, or in models ... | hep-ph |
Monte-Carlo simulation of lepton pair production in "p pbar --> l+l- +
X" events at E_beam = 14 GeV: The lepton pair production in collisions of antiproton beam (E_beam = 14 GeV)
with proton target is studied on the basis of event samples simulated with
PYTHIA6 generator. Two types of quark level subprocesses are con... | hep-ph |
Precision Electroweak Physics at Future Collider Experiments: We present an overview of the present status and prospects for progress in
electroweak measurements at future collider experiments leading to precision
tests of the Standard Model of Electroweak Interactions. Special attention is
paid to the measurement of t... | hep-ph |
CP-Violation in b \to s \ell^{+} \ell^{-} transition Beyond the Standard
Model: In this study the CP-asymmetry in the b \to s \ell^{+} \ell^{-} transition
was investigated in minimal extension of the Standard Model where C_{9}^{eff}
receives an extra weak phase due to the new physics effects. We observed that
CP-Viol... | hep-ph |
LHC signals for neutrino mass model in bilinear R-parity violating mAMSB: We investigate a neutrino mass model in which the neutrino data is accounted
for by bilinear R-parity violating supersymmetry with anomaly mediated
supersymmetry breaking. We focus on the CERN Large Hadron Collider (LHC)
phenomenology, studying t... | hep-ph |
Direct CP Violation in D -> hh Decays: Evidence of CP violation in the charm sector has been observed recently by
the LHCb and CDF Collaborations. The issue of whether it can be accommodated
within the standard model (SM) is examined in this talk. We conclude that the
CP asymmetry difference $\Delta a_{CP}^{\rm dir}$ b... | hep-ph |
Nonexistence of the Longitudinal Polarisation of a Massive Gauge Bosons: This paper has been withdrawn by the authors due to some errors. | hep-ph |
Landau-Zener problem in a three-level neutrino system with non-linear
time dependence: We consider the level-crossing problem in a three-level system with
non-linearly time-varying Hamiltonian (time-dependence $t^{-3}$). We study the
validity of the so-called independent crossing approximation in the
Landau-Zener mod... | hep-ph |
Non-relativistic bound states at finite temperature (I): the hydrogen
atom: We illustrate how to apply modern effective field theory techniques and
dimensional regularization to factorize the various scales which appear in
non-relativistic bound states at finite temperature. We focus here on the
simplest case: the hy... | hep-ph |
QCD Saturation and Deuteron-Nucleus Collisions: We make quantitative predictions for the rapidity and centrality dependencies
of hadron multiplicities in dA collisions at RHIC basing on the ideas of parton
saturation in the Color Glass Condensate. | hep-ph |
Could the excess seen at 124-126 GeV be due to the Randall-Sundrum
Radion?: Current Higgs boson searches in various channels at the LHC point to an
excess at around 124-126 GeV due to a possibly standard-model-like Higgs boson.
If one examines more closely the channels (\gamma\gamma, WW*, and ZZ*) that
have excess, t... | hep-ph |
Investigation of next-to-leading effects in CCFM: The effect of formally next-to-leading contributions to the CCFM evolution
equation are discussed. | hep-ph |
Nonabelian dark matter models for 3.5 keV X-rays: A recent analysis of XXM-Newton data reveals the possible presence of an
X-ray line at approximately 3.55 keV, which is not readily explained by known
atomic transitions. Numerous models of eV-scale decaying dark matter have been
proposed to explain this signal. Here we... | hep-ph |
Two-Photon Exchange in Electron-Proton Elastic Scattering: Theory Update: Recent theoretical developments in the studies of two-photon exchange effects
in elastic electron-proton scattering are reviewed. Two-photon exchange
mechanism is considered a likely source of discrepancy between polarized and
unpolarized experim... | hep-ph |
NMSSM in gauge-mediated SUSY breaking without domain wall problem: A problem of the gauge-mediated SUSY breaking model is its difficulty to
generate a natural value of mu/Bmu, while the NMSSM is a natural framework to
solve the mu/Bmu problem. The NMSSM in gauge-mediated SUSY breaking in its
original form does not work... | hep-ph |
Reconstructing CMSSM parameters at the LHC with $\sqrt{s}=14$ TeV via
the golden decay channel: We identify a benchmark point in the CMSSM's heavy stau-coannihilation
region, which is favored by experiments, and demonstrate that it could be
accessible to the LHC at $\sqrt{s}=14$ TeV with 300/fb of integrated luminosi... | hep-ph |
Phenomenology of Hidden Valleys at Hadron Colliders: We study the phenomenology of, and search techniques for, a class of "Hidden
Valleys." These models are characterized by low mass (well below a TeV) bound
states resulting from a confining gauge interaction in a hidden sector; the
states include a spin-one resonance ... | hep-ph |
Suppression of Bremsstrahlung at Non-Zero Temperature: The first-order bremsstrahlung emission spectrum is $\alpha d\omega/\omega$
at zero temperature. If the radiation is emitted into a region that contains a
thermal distribution of photons, then the rate is increased by a factor
$1+N(\omega)$ where $N(\omega)$ is the... | hep-ph |
Charmonium decay in the C3P0 Model: In this work, we use the $C^3P_{\,0}$ model to calculate the decay widths of
the low lying charmonium $J^{PC}=1^{--}$ states, nominally $J/\psi(1S)$ and
$\psi(2S)$, in the following common channels: $\rho\,\pi$, $\omega\,\eta$,
$\omega\,\eta^\prime$, $K^{\ast +}\,K^-$, $K^{\ast 0}\,\... | hep-ph |
Probing Planck Scale Spacetime By Cavity Opto-Atomic $^{87}$Rb
Interferometry: The project of \emph{"quantum spacetime phenomenology"} focuses on searching
pragmatically for the Planck scale quantum features of spacetime. Among these
features is the existence of a characteristic length scale addressed commonly
by eff... | hep-ph |
Energetics of neutrinos in neutron stars: I review our proof that long range forces induced by the exchange of massless
neutrino-antineutrino pairs do not affect the stability of neutron stars. | hep-ph |
The description of $F_2$ at low $Q^2$: We analyse the data for the proton structure function $F_2$ over the entire
$Q^2$ domain, including especially low $Q^2$, in terms of perturbative and
non-perturbative QCD contributions. The small distance configurations are given
by perturbative QCD, while the large distance cont... | hep-ph |
Double transverse spin asymmetries in vector boson production: We investigate a helicity non-flip double transverse spin asymmetry in vector
boson production in hadron-hadron scattering, which was first considered by
Ralston and Soper at the tree level. It does not involve transversity functions
and in principle also a... | hep-ph |
A Refined Analysis on the $X(3872)$ Resonance: We study the property of the $X(3872)$ meson by analyzing the $B\to K D\bar
D^*$ and $B\to K J/\psi \pi^+\pi^-$ decay processes. The competition between
the rescattering mediated through a Breit-Wigner resonance and the rescattering
generated from a local $D\bar{D}^* \to D... | hep-ph |
Renormalization Group Improved Exponentiation of Soft Gluons in QCD: We extend the methods of Yennie, Frautschi and Suura to QCD for the summation
of soft gluon effects in which infrared singularities are cancelled to all
orders in $\alpha_s$. An explicit formula for the respective \rngp improved
exponentiated cross se... | hep-ph |
Heavy Quark Expansions for Inclusive Heavy-Flavour Decays and the
Lifetimes of Charm and Beauty Hadrons: Inclusive heavy-flavour decays can be described through $1/m_Q$ expansions
derived from QCD with the help of an operator product expansion. I sketch their
methodology and apply them first to semileptonic B decays;... | hep-ph |
Particle Spectra from the ALCOR Model: We introduce the Transchemistry Model as a dynamical extension of the
Algebraic Coalescence Rehadronization (ALCOR) model in describing the
hadronization of quark matter which is expected to be produced in relativistic
heavy ion collisions. Results are presented for CERN SPS NA49 ... | hep-ph |
Probe of anomalous neutrino couplings to W and Z in medium energy setup
of a beta-beam facility: Capability of medium energy setup of a beta beam experiment to probe new
physics contributions to neutrino-W and neutrino-Z couplings are investigated.
We employ the effective lagrangian approach of Buchmuller and Wyler a... | hep-ph |
Azimuthal spin asymmetries in light-cone constituent quark models: We present results for all leading-twist azimuthal spin asymmetries in
semi-inclusive lepton-nucleon deep-inelastic scattering due to T-even
transverse-momentum dependent parton distribution functions on the basis of a
light-cone constituent quark model... | hep-ph |
Non-factorizable corrections to W-pair production: In this paper we study the non-factorizable QED corrections to
W-pair-mediated (charged-current) four-fermion production in electron-positron
collisions. A brief account of the obtained analytical results is given. They
turn out to be different from the ones published ... | hep-ph |
Search for new physics with neutrinos at Radioactive Ion Beam facilities: We propose applications of Radioactive Ion Beam facilities to investigate
physics beyond the Standard Model. In particular, we focus on the possible
measurement of coherent neutrino-nucleus scattering and on a search for sterile
neutrinos, by mea... | hep-ph |
Top condensation as a motivated explanation of the top forward-backward
asymmetry: Models of top condensation can provide both a compelling solution to the
hierarchy problem as well as an explanation of why the top-quark mass is large.
The spectrum of such models, in particular topcolor-assisted technicolor,
includes... | hep-ph |
Heavy-light meson's physics in Lattice QCD: The possibility of revealing new physics by studying the flavor sector of the
Standard Model strongly depends upon the accuracy that will be achieved in
(near) future lattice QCD calculations and, in particular, on heavy-light
meson's observables. In turn, handling with heavy... | hep-ph |
Feasibility of tau g-2 measurements in ultra-peripheral collisions of
heavy ions: The anomalous magnetic moment of the tau lepton, a_tau = (g_tau - 2)/2, is a
sensitive probe of new physics but is extremely difficult to measure precisely
in contrast to electron and muon moments. The best experimental limits were set
... | hep-ph |
Measuring the Top Yukawa Coupling at 100 TeV: We propose a measurement of the top Yukawa coupling at a 100 TeV hadron
collider, based on boosted Higgs and top decays. We find that the top Yukawa
coupling can be measured to 1%, with excellent handles for reducing systematic
and theoretical uncertainties, both from side ... | hep-ph |
Remark on approximation in the calculation of the primordial spectrum
generated during inflation: We re-examine approximations in the analytical calculation of the primordial
spectrum of cosmological perturbation produced during inflation. Taking two
inflation models (chaotic inflation and natural inflation) as examp... | hep-ph |
R-charge Kills Monopoles: Large charge density, unlike high temperature, may lead to nonrestoration of
global and gauge symmetries. Supersymmetric GUTs with the appealing scenario of
unification scale being generated dynamically naturally contain global
continuous $R$ symmetries. We point out that the presence of a lar... | hep-ph |
Forward proton scattering in association with muon pair production via
the photon fusion mechanism at the LHC: Dilepton production in proton-proton collision through $\gamma\gamma$-fusion
with one proton scattered elastically while the second produces a hadron jet is
considered. Semi-analytical formulas describing th... | hep-ph |
Electroweak phase transition via Dilaton in Two-Time Physics: The Two-time model (2T model) has six dimensions with two dimensions of time,
has a Dilaton particle that makes the symmetry breaking differently from the
Standard Model. Assuming a soft break of $SP(2,R)$ symmetry, the 2T extension
can give a suitable pictu... | hep-ph |
New algorithm to study the pseudo-Wigner solution of the quark gap
equation in the framework of the (2+1)-flavor NJL model: In this paper, we study the pseudo-Wigner solution of the quark gap equation
with a recently proposed algorithm in the framework of the (2+1)-flavor
Nambu-Jona-Lasinio (NJL) model. We find that ... | hep-ph |
FIESTA 3: cluster-parallelizable multiloop numerical calculations in
physical regions: The goal of this paper is to present a new major release of the program
FIESTA (Feynman Integral Evaluation by a Sector decomposiTion Approach). This
version presents features like cluster-parallelization, new asymptotic
expansion ... | hep-ph |
Dynamically generated axial-vector meson resonance in the chiral
symmetry restored vacuum: We study the modification of the properties of the axial-vector meson,
dynamically generated through the unitarization procedure, in the vacuum where
the chiral symmetry is restored. This is accomplished by scaling the pion dec... | hep-ph |
Mass effects in muon and semileptonic b -> c decays: Quantum chromodynamics (QCD) effects in the semileptonic decay b -> c l nu
are evaluated to the second order in the coupling constant, O(alpha_s^2), and
to several orders in the expansion in quark masses, m_c/m_b. Corrections are
calculated for the total decay rate a... | hep-ph |
Scale dependence of the q and T parameters of the Tsallis distribution
in the process of jet fragmentation: The dependence of the $q$ and $T$ parameters of the
Tsallis-distribution-shaped fragmentation function (FF) on the fragmentation
scale (found to be equal to the jet mass) is calculated via the resummation of
th... | hep-ph |
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