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Unparticle physics in diphoton production at the CERN LHC: We have considered the di-photon production with unparticle at LHC. The
contributions of spin-0 and spin-2 unparticle to the di-photon production are
studied in the invariant mass and other kinematical distributions, along with
their dependencies on the model d... | hep-ph |
CutLHCO: A Consumer-Level Tool for Implementing Generic Collider Data
Selection Cuts in the Search for New Physics: A new computer program named CutLHCO is introduced, whose function is the
implementation of generic data selection cuts on collider event specification
files in the standardized .lhco format. This softw... | hep-ph |
Extended Dark Matter EFT: Conventional approaches to describe dark matter phenomenology at collider and
(in)direct detection experiments in the form of dark matter effective field
theory or simplified models suffer in general from drawbacks regarding validity
at high energies and/or generality, limiting their applicabi... | hep-ph |
CP Violation in the Neutral Higgs Sector of a Non-minimal Supersymmetric
Standard Model with Multiple Higgs Singlets: The possibility of CP violation is studied in the Higgs sector of a
supersymmetric standard model with multiple Higgs singlets. The tree-level
Lagrangian in this model is assumed to conserve the CP sy... | hep-ph |
Spontaneous CP Violation in the Next-to-Minimal Supersymmetric Standard
Model Revisited: We re-examine spontaneous CP violation at the tree level in the context of
the next-to-minimal supersymmetric standard model (NMSSM) with two Higgs
doublets and a gauge singlet field. We analyse the most general Higgs potential
w... | hep-ph |
A role of parton charges and masses in the exclusive photon-photon
production of meson pairs: The exclusive photon-photon production of the $K$-meson pairs has been
analyzed within the partonic model of QCD for the kinematical conditions of
BELLE experiment. The cross section dependences on partonic masses, charges,
... | hep-ph |
$ν$ Electroweak Baryogenesis: We investigate if the CP violation necessary for successful electroweak
baryogenesis may be sourced by the neutrino Yukawa couplings. In particular, we
consider an electroweak scale Seesaw realisation with sizeable Yukawas where
the new neutrino singlets form (pseudo)-Dirac pairs. We find ... | hep-ph |
When does the Schwinger Preheating Occur?: When the inflaton couples to photons and amplifies electric fields, charged
particles produced via the Schwinger effect can dominate the universe after
inflation, which is dubbed as the Schwinger preheating. Using the hydrodynamic
approach for the Boltzmann equation, we numeri... | hep-ph |
Comparison of improved TMD and CGC frameworks in forward quark dijet
production: For studying small-$x$ gluon saturation in forward dijet production in
high-energy dilute-dense collisions, the improved TMD (ITMD) factorization
formula was recently proposed. In the Color Glass Condensate (CGC) framework,
it represents... | hep-ph |
Transverse momentum spectra of D and B mesons in hadron collisions at
high energies: Transverse momentum spectra of charmed and beauty mesons produced in
proton-proton and proton-antiproton collisions at high energies are analyzed
within the modified quark-gluon string model (QGSM) including the internal
motion of qu... | hep-ph |
AROMA 2.2 - A Monte Carlo Generator for Heavy Flavour Events in $ep$
Collisions: A program to simulate the production of heavy quarks through the boson-gluon
fusion process in $e^{\pm}p$ collisions is presented. The full electro\-weak
structure of the electron--gluon interaction is taken into account as well as
the m... | hep-ph |
The Sigma Meson and Chiral Transition in Hot and Dense Matter: It is pointed out that the hadron spectroscopy should be a study of the
structure of the QCD vacuum, low-energy elementary excitations on top of which
are hadrons. Concentrating on the dynamical breaking of the chiral symmetry in
the QCD vacuum, we emphasiz... | hep-ph |
Searching for Scalar Ultralight Dark Matter with Optical Fibers: We consider optical fibers as detectors for scalar ultralight dark matter
(UDM) and propose using a fiber-based interferometer to search for scalar UDM
with particle mass in the range $10^{-17} - 10^{-13}$ eV/$c^2$ $\left(10^{-3}-
10 \text{ Hz}\right)$. C... | hep-ph |
Accurate decay-constant ratios $f_{B^*}/f_B$ and $f_{B_s^*}/f_{B_s}$
from Borel QCD sum rules: We present our analysis of the decay constants of the beauty vector mesons
$B^*$ and $B^*_s$ within the framework of dispersive sum rules for the
two-point correlator of vector currents in QCD. While the decay constants of
... | hep-ph |
A Parametrization for $K^+\to π^+π^- e^+ν$: We discuss various models and Chiral Perturbation Theory results for the
$K_{l4}$ form factors $F$ and $G$. We check in how much a simple
parametrization with a few parameters can be used to extract information from
experiment. | hep-ph |
Electromagnetic Properties of the SU(3) Octet Baryons in the
semibosonized Nambu--Jona-Lasinio Model: The electromagnetic properties of the SU(3) octet baryons are investigated in
the semibosonized SU(3) Nambu--Jona-Lasinio model.The rotational $1/N_c$ and
strange quark mass corrections in linear order are taken into... | hep-ph |
Higgsino Dark Matter or Not: Role of Disappearing Track Searches at the
LHC and Future Colliders: Higgsino in supersymmetric standard models is known to be a promising
candidate for dark matter in the Universe. Its phenomenological property is
strongly affected by the gaugino fraction in the Higgsino-like state. If t... | hep-ph |
Is the tri-bimaximal mixing accidental?: The Tri-bimaximal (TBM) mixing is not accidental if structures of the
corresponding leptonic mass matrices follow immediately from certain (residual
or broken) flavor symmetry. We develop a simple formalism which allows one to
analyze effects of deviations of the lepton mixing f... | hep-ph |
Pion mass dependence of the electromagnetic form factors of singly heavy
baryons: We study the electromagnetic form factors of the lowest-lying singly heavy
baryons with spin 1/2 within the framework of the chiral quark-soliton model,
focusing on the comparison with recent lattice data. To compare the present
results... | hep-ph |
Stability constraint for spin equation of state: A generalized Frenkel condition is proposed for use in spin hydrodynamics to
relate the spin density and spin polarization (or spin chemical potential)
tensors. It allows for independent treatment of electric- and magnetic-like
components of the spin density tensor, whic... | hep-ph |
Searching for supersymmetry in rare B decays: We quantify the ability of B-Factories to observe supersymmetric
contributions to the rare decays B -> X_s \gamma and B -> X_s l+ l-. A global
fit to the Wilson coefficients which contribute to these decays is performed
from Monte Carlo generated data on B(B -> X_s \gamma) ... | hep-ph |
Accessing quark helicity in $e^+e^-$ and SIDIS via dihadron correlations: The correlation between the longitudinal polarization of a fragmenting quark
and the transverse momenta of the produced hadrons was predicted over two
decades ago. Nevertheless, experimental searches in the electron-positron
annihilation process,... | hep-ph |
Application of the QCD light cone sum rule to tetraquarks: the strong
vertices $X_bX_bρ$ and $X_cX_cρ$: The full version of QCD light-cone sum rule method is applied to tetraquarks
containing a single heavy $b$ or $c$ quark. To this end, investigations of the
strong vertices $X_{b}X_{b}\rho$ and $X_{c}X_{c}\rho$ are ... | hep-ph |
Confinement and chiral symmetry crossovers: We study the QCD phase diagram, in particular we study the critical points of
the two main QCD phase transitions, confinement and chiral symmetry breaking.
Confinement drives chiral symmetry breaking, and, due to the finite quark mass,
at small density both transitions are a ... | hep-ph |
Gravitational and higher-order form factors of the pion in chiral quark
models: The gravitational form factor of the pion is evaluated in two chiral quark
models and confronted to the recent full-QCD lattice data. We find good
agreement for the case of the Spectral Quark Model, which builds in the
vector-meson domina... | hep-ph |
Enhancement of dilepton production rate and electric conductivity around
QCD critical point: We investigate whether the soft mode that becomes massless at the QCD
critical point (CP) causes an enhancement of the dilepton production rate (DPR)
and the electric conductivity around the CP through the modification of the... | hep-ph |
Charged lepton flavor violation searches in the charmonium system: An invited research highlight article on Charged lepton flavor violation
searches in the charmonium system. | hep-ph |
Impact of theoretical uncertainties on model parameter reconstruction
from GW signals sourced by cosmological phase transitions: Different computational techniques for cosmological phase transition
parameters can impact the Gravitational Wave (GW) spectra predicted in a given
particle physics model. To scrutinize the... | hep-ph |
NLO QCD corrections to pp -> ttbb+X via quark anti-quark annihilation: The process pp -> top anti-top bottom anti-bottom + X represents a very
important background reaction to searches at the LHC, in particular to top
anti-top H production where the Higgs boson decays into a bottom anti-bottom
pair. A successful analys... | hep-ph |
Hadronization from color interactions: A quark coalescence model is presented based on semi-relativistic molecular
dynamics with color interactions among quarks taken into account and applied to
$pp$ collisions to study the effects of this model. A phenomenological
potential with two tunable parameters is introduced to... | hep-ph |
The midpoint between dipole and parton showers: We present a new parton-shower algorithm. Borrowing from the basic ideas of
dipole cascades, the evolution variable is judiciously chosen as the transverse
momentum in the soft limit. This leads to a very simple analytic structure of
the evolution. A weighting algorithm i... | hep-ph |
Phenomenological Approach to Multiple Particle Production: We formulate empirically the rapidity density distribution of produced
particles in multiple particle production. The assumed mechanism is that the
produced particles are emitted isotropically from several emitting centers,
located on the rapidity axis. The for... | hep-ph |
Electroweak couplings and LHC constraints on alternative $Z^{\prime}$
models in $E_6$: We report the most general expression for the chiral charges of a $Z'$ gauge
boson coming from an $E_6$ unification model, as a function of the electroweak
parameters and the charges of the $U(1)$ factors in the chain of subgroups.... | hep-ph |
Is Radiative Electroweak Symmetry Breaking Consistent with a 125 GeV
Higgs Mass?: The mechanism of radiative electroweak symmetry breaking occurs through loop
corrections, and unlike conventional symmetry breaking where the Higgs mass is
a parameter, the radiatively-generated Higgs mass is dynamically predicted.
Pade... | hep-ph |
Possible Interpretations of $D_{sJ}^+(2632)$ If It Really Exists: We analyze various possible interpretations of the narrow state
$D_{sJ}^+(2632)$ observed by SELEX Collaboration recently, which lies above
threshold and has abnormal decay pattern. These interpretations include: (1)
several versions of tetraquarks; (2) ... | hep-ph |
Mixing at 1-loop in a SU(2)_L gauge theory of weak interactions: Flavor mixing is scrutinized at 1-loop in a SU(2)_L gauge theory of massive
fermions. The main issue is to cope with kinetic-like, momentum (p^2) dependent
effective interactions that arise at this order. They spoil the unitarity of
the connection between... | hep-ph |
NLO Monte-Carlo approach in 1 or 2 jets Photoproduction: We present a method for calculating the photoproduction of jets at HERA based
on Next to Leading Logarithm QCD calculations. It is implemented in a
Monte-Carlo generator which allows us to easily compute any infra-red safe
cross sections for 1 or 2 jet observable... | hep-ph |
SU(3) Mixing for Excited Mesons: The SU(3)-flavor symmetry breaking and the quark-antiquark annihilation
mechanism are taken into account for describing the singlet-octet mixing for
several nonets assigned by Particle Data Group(PDG). This task is approached
with the mass matrix formalism. | hep-ph |
Impact of nonextensivity on the transport coefficients of a magnetized
hot and dense QCD matter: We have studied the impact of the nonextensivity on the transport
coefficients related to charge and heat in thermal QCD. For this purpose, the
electrical ($\sigma_{\rm el}$), Hall ($\sigma_{\rm H}$), thermal ($\kappa$) a... | hep-ph |
(beta beta)_{0 nu}-decay: a possible test of the nuclear matrix element
calculations: The existing calculations of the nuclear matrix elements of the neutrinoless
double beta-decay differ by about a factor three. This uncertainty prevents
quantative interpretation of the results of experiments searching for this
proc... | hep-ph |
Status of the NLO Corrections to the Photon Impact Factor: We present the status of the programme of calculating the next-to-leading
order corrections to the virtual photon impact factor. In particular, we
discuss new results for the transversely polarized photon. We briefly outline
the definition of infrared finite te... | hep-ph |
Decays of the neutral Higgs bosons into SM fermions and gauge bosons in
the $\mathcal{CP}$-violating NMSSM: The Next-to-Minimal Supersymmetric Standard Model (NMSSM) offers a rich
framework embedding physics beyond the Standard Model as well as consistent
interpretations of the results about the Higgs signal detected... | hep-ph |
The renormalization group analysis of the large lepton flavor mixing and
the neutrino mass: The Superkamiokande experiment suggests the large flavor mixing between nu_mu
and nu_tau. We show that the mixing angle receives significant corrections from
the renormalization group equation (RGE) when both the second and th... | hep-ph |
Perturbative QCD description of jet data from LHC Run-I and Tevatron
Run-II: We present a systematic comparison of jet predictions at the LHC and the
Tevatron, with accuracy up to next-to-next-to-leading order (NNLO). The exact
computation at NNLO is completed for the gluons-only channel, so we compare the
exact pred... | hep-ph |
Decoupling Theoretical Uncertainties from Measurements of the Higgs
Boson: We develop a technique to present Higgs coupling measurements, which decouple
the poorly defined theoretical uncertainties associated to inclusive and
exclusive cross section predictions. The technique simplifies the combination
of multiple me... | hep-ph |
Precision test of a Fermion mass texture: Texture zeros in the quark Yukawa matrices generally lead to precise and
simple expressions for CKM matrix elements in terms of ratios of quark masses.
Using the new data on $b-$decays we test a particularly promising texture zero
solution and show that it is at best approximat... | hep-ph |
Uncertainties of predictions from parton distribution functions II: the
Hessian method: We develop a general method to quantify the uncertainties of parton
distribution functions and their physical predictions, with emphasis on
incorporating all relevant experimental constraints. The method uses the
Hessian formalism... | hep-ph |
Thermodynamic inconsistency in quasiparticle model - a revisit: Widely studied quasiparticle models for quark gluon plasma is revisited here
to understand the statistical mechanics and thermodynamics of the system. We
investigate the statistical mechanics and thermodynamics inconsistencies
involved in these models and ... | hep-ph |
Unstable Gravitino Dark Matter and Neutrino Flux: The gravitino is a promising supersymmetric dark matter candidate which does
not require exact R-parity conservation. In fact, even with some small R-parity
breaking, gravitinos are sufficiently long-lived to constitute the dark matter
of the Universe, while yielding a ... | hep-ph |
Higgs boson decays into γγ and Zγ in the MSSM and
BLSSM: We calculate Higgs decay rates into {\gamma}{\gamma} and Z{\gamma} in the
Minimal Supersymmetric Standard Model (MSSM) and (B-L) Supersymmetric Standard
Model (BLSSM) by allowing for contributions from light staus and charginos. We
show that sizable departures ... | hep-ph |
Q-ball Metamorphosis: Flat directions in the minimal supersymmetric standard model are known to
deform into non-topological solitons, Q-balls, which generally possess both
baryon and lepton asymmetries. We investigate how Q-balls evolve if some of the
constituent fields of the flat direction decay into light species. I... | hep-ph |
Nuclear effects in the proton-deuteron Drell-Yan process: We compute the nuclear corrections to the proton-deuteron Drell-Yan cross
section for inclusive dilepton production, which, when combined with the
proton-proton cross section, is used to determine the flavor asymmetry in the
proton sea, dbar - ubar. In addition ... | hep-ph |
A review of neutrino decoupling from the early universe to the current
universe: We review the distortions of spectra of relic neutrinos due to the
interactions with electrons, positrons, and neutrinos in the early universe. We
solve integro-differential kinetic equations for the neutrino density matrix,
including va... | hep-ph |
An extended Higgs sector for neutrino mass, dark matter and baryon
asymmetry: In this talk, we discuss a TeV scale model which would explain neutrino
oscillation, dark matter, and baryon asymmetry of the Universe simultaneously
by the dynamics of the extended Higgs sector and TeV-scale right-handed
neutrinos. By the ... | hep-ph |
3-3-1 exotic quark search at CERN LEPII-LHC: The 3-3-1 electroweak model is the simplest chiral extension of the standard
model which predicts single and double charged bileptons and exotic quarks
carrying -4/3 and 5/3 units of the positron charge. In this paper we study the
possibilities of the production and decay of... | hep-ph |
Theoretical investigations on the Y(4260) being an hybrid meson: The new recently experiments at the B-factories yield a renewed interest in
the charm and charmonium spectroscopy. New intriguing states have been
observed, which appear to be non-conventional mesons, such as X(3862) and
Y(4260) and request more theoretic... | hep-ph |
The Heavy Quark Expansion for the Charm Quark: We show that one can re-arrange the Heavy Quark Expansion for inclusive weak
decays of charmed hadrons in such a way that the resulting expansion is an
expansion in $\Lambda_{\rm QCD} / m_c$ and $\alpha_s (m_c)$ with order-one
coefficients. Unlike in the case of the bottom... | hep-ph |
Reach of the CERN LHC for the Minimal Anomaly-Mediated SUSY Breaking
Model: We examine the reach of the CERN LHC pp collider for supersymmetric models
where the dominant contribution to soft SUSY breaking parameters arises from
the superconformal anomaly. In the simplest viable anomaly mediated SUSY
breaking (AMSB) m... | hep-ph |
One-loop Weak Dipole Form Factors and Weak Dipole Moments of Heavy
Fermions: The one-loop weak-magnetic and weak-electric dipole form factors of heavy
fermions in a generic model are derived. Numerical predictions for the $\tau$
lepton and $b$ quark Weak Anomalous Magnetic and Electric Dipole Moments (AWMDM
and WEDM)... | hep-ph |
Gauge Dependence of Lower Bounds on the Higgs Mass Derived from
Electroweak Vacuum Stability Constraints: We examine the gauge dependence of lower bounds on the Higgs mass obtained
from the requirement that the electroweak vacuum be the global minimum of the
effective potential. We study a simple model, the spontaneo... | hep-ph |
Zee and Zee-Babu mechanisms in the minimal 331 model: We show that the minimal 3-3-1 model cannot accommodate the neutrino masses
at tree level using present experimental data. Nevertheless, a modified Zee and
the Zee-Babu mechanisms for generating neutrino masses at 1-loop and 2-loop,
respectively, are automatically i... | hep-ph |
Troubles with the Minimal SU(5) Supergravity Model: We show that within the framework of the minimal $SU(5)$ supergravity model,
radiatively-induced electroweak symmetry breaking and presently available
experimental lower bounds on nucleon decay, impose severe constraints on the
available parameter space of the model w... | hep-ph |
Bounds on heavy Majorana neutrinos in type-I seesaw and implications for
collider searches: The neutrino masses and flavor mixings, which are missing in the Standard
Model (SM), can be naturally incorporated in the type-I seesaw extension of the
SM with heavy Majorana neutrinos being singlet under the SM gauge group.... | hep-ph |
Energy Momentum Tensor Correlators in Improved Holographic QCD: In this thesis, we study the physics of the quark gluon plasma (QGP) using
holographic methods borrowed from string theory. We start our discussion by
motivating the use of such machinery, explaining how recent experimental
results from the LHC and RHIC co... | hep-ph |
A comprehensive study on the semileptonic decay of heavy flavor mesons: The semileptonic decay of heavy flavor mesons offers a clean environment for
extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements, which
describes the CP-violating and flavor changing process in the Standard Model.
The involved form fa... | hep-ph |
The tau lepton Monte Carlo Event Generation -- imprinting New Physics
models with exotic scalar or vector states into simulation samples: The Monte Carlo for lepton pair production andtau decays consist of KKMC for
lepton pair production, tauola for tau lepton decays and photos for radiative
corrections in decays.
... | hep-ph |
Possible Suppression of Resonant Signals for Split-UED by Mixing at the
LHC?: The mixing of the imaginary parts of the transition amplitudes of nearby
resonances via the breakdown of the Breit-Wigner approximation has been shown
to lead to potentially large modifications in the signal rates for new physics
at collide... | hep-ph |
Electrodynamics with Lorentz-violating operators of arbitrary dimension: The behavior of photons in the presence of Lorentz and CPT violation is
studied. Allowing for operators of arbitrary mass dimension, we classify all
gauge-invariant Lorentz- and CPT-violating terms in the quadratic Lagrange
density associated with... | hep-ph |
Annihilating Asymmetric Dark Matter: The relic abundance of particle and antiparticle dark matter (DM) need not be
vastly different in thermal asymmetric dark matter (ADM) models. By considering
the effect of a primordial asymmetry on the thermal Boltzmann evolution of
coupled DM and anti-DM, we derive the requisite an... | hep-ph |
Anti-B --> X(s) gamma in two universal extra dimensions: We calculate the leading order corrections to the anti-B --> X(s) gamma decay
in the standard model with two large flat universal extra dimensions. We find
that the contributions involving the exchange of Kaluza-Klein modes of the
physical scalar field a^+-_(kl) ... | hep-ph |
Large mixing, family structure, and dominant block in the neutrino mass
matrix: A possible connection between the flavour structure of the charged fermions
and the large $\nu_\mu-\nu_\tau$ mixing motivates an ansatz for the neutrino
mass matrix with a dominant block. We distinguish between a general form and
the spec... | hep-ph |
Semi-inclusive production of spin-3/2 hadrons in deep inelastic
scattering: We investigate the production of spin-3/2 hadrons in semi-inclusive deep
inelastic lepton-nucleon scatterings. The complete differential cross section
is derived through the kinematic analysis and expressed in terms of 288
structure functions... | hep-ph |
A sum rule for elastic scattering: A sum rule is derived for elastic scattering of hadrons at high energies
which is in good agreement with experimental data on $p\bar{p}$ available upto
the maximum energy $\sqrt{s} = 2 TeV$. Physically, our sum rule reflects the
way unitarity correlates and limits how large the elasti... | hep-ph |
Are CP Violating Effects in the Standard Model Really Tiny?: We derive an effective action of the bosonic sector of the Standard Model by
integrating out the fermionic degrees of freedom in the worldline approach. The
CP violation due to the complex phase in the CKM matrix gives rise to
CP-violating operators in the ef... | hep-ph |
Diagnosis of Supersymmetry Breaking Mediation Schemes by Mass
Reconstruction at the LHC: If supersymmetry is discovered at the LHC, the next question will be the
determination of the underlying model. While this may be challenging or even
intractable, a more optimistic question is whether we can understand the main
c... | hep-ph |
Electron Mass Operator in a Strong Magnetic Field and Dynamical Chiral
Symmetry Breaking: The electron mass operator in a strong magnetic field is calculated. The
contribution of higher Landau levels of virtual electrons, along with the
ground Landau level, is shown to be essential in the leading log approximation.
T... | hep-ph |
Three-Loop Effective Potential of O(N) $φ^4$ Theory: The three-loop effective potential of the massless O(N) $\phi^4$ theory is
calculated analytically using techniques of dimensional regularization. We see
a complete agreement between our result and Jackiw's result obtained only up to
two-loop order using a different ... | hep-ph |
Towards a consistent AdS/QCD dictionary: This note focuses on the large-N behaviour of the Hard Wall model of QCD and
clarifies the AdS/QCD dictionary formulated on the basis of the AdS/CFT
correspondence. It is shown how short-distance studies performed in the
framework of the AdS/QCD Soft Wall model allow one to dete... | hep-ph |
Inclusive hadronic distributions at small x: After giving their general expressions valid at all x, double differential
1-particle inclusive distribution inside a quark and a gluon jet produced in a
hard process, together with the inclusive kt distribution, are given at small x
in the Modified Leading Logarithmic Appro... | hep-ph |
Matching of Fracture Functions for SIDIS in Target Fragmentation Region: In the target fragmentation region of Semi-Inclusive Deep Inelastic
Scattering, the diffractively produced hadron has small transverse momentum. If
it is at order of $\Lambda_{QCD}$, it prevents to make predictions with the
standard collinear fact... | hep-ph |
Isolating a light Higgs boson from the di-photon background at the LHC: We compute the QCD corrections to the gluon fusion subprocess gg to gamma
gamma, which forms an important component of the background to the search for a
light Higgs boson at the LHC. We study the dependence of the improved pp to
gamma gamma X back... | hep-ph |
SMEFT interpretation of $Δ$F = 2 transitions: A model-independent anatomy of $\Delta F= 2$ transitions in the context of
the Weak Effective Theory (WET) below the electroweak scale (EW) and the
Standard Model Effective Field Theory (SMEFT) above the EW scale is discussed.
Two master formulae for the BSM contribution of... | hep-ph |
Confinement of Fermions in Tachyon Matter at Finite Temperature: We study a phenomenological model that mimics the characteristics of QCD
theory at finite temperature. The model involves fermions coupled with a
modified Abelian gauge field in a tachyon matter. It reproduces some important
QCD features such as, confinem... | hep-ph |
Light $q\bar{q}$ Resonances: Spectrum and Decays: I give a brief introduction to light $q\bar{q}$ resonances. The properties of
$q\bar{q}$ states are discussed in the context of the constituent quark model,
including predictions for mass and partial decay widths. Problems and puzzles
in the meson spectrum are pointed o... | hep-ph |
Chiral density waves in quarkyonic matter: We study the phase diagram of strongly interacting matter including the
inhomogeneous phase of Chiral Density Waves (CDW) within the Polyakov loop
extended Nambu-Jona-Lasinio (PNJL) model. We discuss the phase structure taking
into account density and flavour dependence of the... | hep-ph |
Light Scalars and the KOTO Anomaly: The KOTO experiment recently presented a significant excess of events in
their search for the rare SM process $K_L \to \pi^0\nu\bar{\nu}$, well above
both Standard Model signal and background predictions. We show that this excess
may be due to weakly-coupled scalars that are produced... | hep-ph |
Studying the Higgs Potential at the e+e- Linear Collider: The determination of the shape of the Higgs potential is needed to complete
the investigation of the Higgs profile and to obtain a direct experimental
proof of the mechanism of electro-weak symmetry breaking. This can be achieved,
at a linear collider, by determ... | hep-ph |
An analysis of f_0-sigma mixing in light cone QCD sum rules: We investigate f_0-sigma mixing in the framework of light cone QCD sum rules
and by employing the experimental results about the decay widths and the masses
of these scalar mesons we estimate the scalar mixing angle by using sigma meson
data and f_0 meson dat... | hep-ph |
Pinching phenomenon: Central feature in out of equilibrium thermal field
theories: We continue to study out of equilibrium TFT with switching on the interaction
occurring at finite time. We exploit the concept of projected function (PF) and
Wigner transform of projected function (WTPF). WTPF's are bare propagators,
o... | hep-ph |
Charged Lepton Flavor Violation at the High-Energy Colliders: Neutrino
Mass Relevant Particles: We summarize the potential charged lepton flavor violation (LFV) from
neutrino mass relevant models, for instance the seesaw mechanisms. In
particular, we study, in a model-dependent way, the LFV signals at the
high-energy... | hep-ph |
Sea contribution to the charge radii and quadrupole moment of
$J^P=\frac{1}{2}^+, \frac{3}{2}^+$ baryons: An operator formalism is used on the wavefunction of baryons to compute their
charge radii and quadrupole moments. Total anti-symmetric wavefunction in spin,
color and flavor space is framed for $J^P=\frac{1}{2}^... | hep-ph |
The renormalization group and quark number fluctuations in the Polyakov
loop extended quark-meson model at finite baryon density: Thermodynamics and the phase structure of the Polyakov loop-extended two
flavors chiral quark--meson (PQM) model is explored beyond the mean-field
approximation. The analysis of the PQM mo... | hep-ph |
Singlet scalars as Higgs imposters at the Large Hadron Collider: An electroweak singlet scalar can couple to pairs of vector bosons through
loop-induced dimension five operators. Compared to a Standard Model Higgs
boson, the singlet decay widths in the diphotons and Z gamma channels are
generically enhanced, while deca... | hep-ph |
A road to an elementary particle physics model with no Higgs -- II: This is the second of two companion papers in which we continue developing
the construction of an elementary particle model with no Higgs. Here we show
that the recently identified non-perturbative field-theoretical feature,
alternative to the Higgs me... | hep-ph |
J/P=1/2+, J/P=3/2+ masses in statistical model: The mass formulae for the baryon octet and decuplet are calculated. These
formulae are function of constituent quark masses and spin spin interaction
terms for the quarks inside the baryons. The coefficients in the mass formulae
is estimated by the statistical model for J... | hep-ph |
Leptoquark effects on $b \to s ν\barν$ and $B \to K l^+ l^-$
decay processes: We study the rare semileptonic decays of $B$ mesons induced by $b \to s \nu
\bar{\nu}$ as well as $b \to s l^+ l^-$ transitions in the scalar leptoquark
model where the leptoquarks transform as $(3,2,7/6)$ and $(3,2,1/6)$ under the
standard... | hep-ph |
Drell-Yan hadron tensor: contour gauge and gluon propagator: We consider the gauge invariant Drell-Yan hadron tensor which includes the
standard and non-standard diagram contributions. The non-standard diagram
contribution is appeared owing to the complexity of the twist three
$B^V(x_1,x_2)$-function where the gluon po... | hep-ph |
Shift Symmetry and Higgs Inflation in Supergravity with Observable
Gravitational Waves: We demonstrate how to realize within supergravity a novel chaotic-type
inflationary scenario driven by the radial parts of a conjugate pair of Higgs
superfields causing the spontaneous breaking of a grand unified gauge symmetry
at... | hep-ph |
Global analysis of the Sivers functions at NLO+NNLL in QCD: We perform global fit to the quark Sivers function within the transverse
momentum dependent (TMD) factorization formalism in QCD. We simultaneously fit
Sivers asymmetry data from Semi-Inclusive Deep Inelastic Scattering (SIDIS) at
COMPASS, HERMES, and JLab, fr... | hep-ph |
Insights from the Interplay of K -> pi nu anti-nu and epsilon_K on the
New Physics Flavour Structure: In certain new physics (NP) models, such as the Littlest Higgs model with
T-parity, a strict correlation between the K_L -> pi0 nu anti-nu and K+ -> pi+
nu anti-nu branching ratios has been observed, allowing essenti... | hep-ph |
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