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Right-Chiral Sneutrino LSP in mSUGRA: Event characteristics of NLSP at
the LHC: We study a supersymmetric scenario where the lighter tau-sneutrino is the
lightest supersymmetric particle, while the lighter stau-state is the next
lightest. Such a scenario can be motivated within the framework of minimal
supergravity, ... | hep-ph |
Higgs Production and Decay via $e^+e^-\rightarrow Z^0 H^0 \rightarrow
b\bar bW^+W^-$ and Irreducible Backgrounds at the Next Linear Collider: The complete matrix element for $e^+e^-\ar b\bar bW^+W^-$ has been computed
at tree--level and applied to $Z^0H^0$ production followed by $Z^0\ar b\bar b$
and $H^0\ar W^+W^-$, ... | hep-ph |
Evolution of transverse-momentum-dependent densities: We discuss different operator definitions of the transverse-momentum
dependent (TMD) parton densities from the point of view of their
renormalization-group (RG) properties and UV evolution. We also consider the
structure of the gauge links (Wilson lines) in these op... | hep-ph |
Pair production of doubly heavy baryons: We analytically calculate the total and differential cross sections for the
pair production of doubly heavy baryons in the framework of diquark model. The
processes of electron-positron and quark-antiquark annihilations are
considered. The fractions of doubly heavy baryons in th... | hep-ph |
Current-Target Correlations as a Probe of Delta_G/G in Polarized Deep
Inelastic Scattering: The measurement of the polarized gluon distribution function Delta_G/G using
current-target correlations in the Breit frame of deep inelastic scattering is
proposed. The approach is illustrated using a Monte Carlo simulation o... | hep-ph |
Effects of non-standard interaction on microscopic black holes from
ultra-high energy neutrinos: If the universe has more than 4-dimensions, the TeV scale gravity theories
predict formation of microscopic black holes due to interaction of ultra high
energy neutrinos coming from some extragalactic origin with the nucl... | hep-ph |
Cosmological Axion and Quark Nugget Dark Matter Model: We study a dark matter (DM) model offering a very natural explanation of two
(naively unrelated) problems in cosmology: the observed relation $\Omega_{\rm
DM}\sim\Omega_{\rm visible}$ and the observed asymmetry between matter and
antimatter in the Universe, known a... | hep-ph |
The 14 TeV LHC Takes Aim at SUSY: A No-Scale Supergravity Model for LHC
Run 2: The Supergravity model named No-Scale ${\cal F}$-$SU(5)$, which is based upon
the flipped $SU$(5) Grand Unified Theory (GUT) with additional TeV-scale
vector-like flippon multiplets, has been partially probed during the LHC Run 1
at 7-8 Te... | hep-ph |
Dark top partner: Composite Higgs models with extended symmetries can feature mesonic dark
matter candidates. In fundamental CHMs, the origin of dark parity can be
explained in the UV theory. Combined with top partial compositeness, this leads
to non-chiral Yukawa interaction connecting mesonic DM with one dark top
par... | hep-ph |
Precision measurements of IVB parameters and bounds on new physics: The main purpose of this thesis is to discuss the impact of electroweak
precision measurements on the present knowledge of particle physics, both in
the framework of the Standard Model and of its most straightforward extensions.
In Chapter 1 we give a ... | hep-ph |
Search for neutrinoless double beta decay with enriched 76Ge in Gran
Sasso 1990-2003: The results of the HEIDELBERG-MOSCOW experiment which searches with 11 kg of
enriched 76Ge for double beta decay in the GRAN Sasso underground laboratory
are presented for the full running period August 1990 - May 2003. The duty
cyc... | hep-ph |
Sum-rule constraints on possible diphoton resonances at LHC: The study of the forward scattering amplitude $V(k,\lambda) V(k'\lambda')\to
V(k,\lambda) V(k',\lambda')$ of real massless gauge bosons $V$, e.g. photons or
gluons, leads to a sum-rule that can be used to investigate beyond the Standard
Model signals at LHC i... | hep-ph |
Little Higgs Model Discrimination at the LHC and ILC: We propose a means to discriminate between the two basic variants of Little
Higgs models, the Product Group and Simple Group models, at the next generation
of colliders. It relies on a special coupling of light pseudoscalar particles
present in Little Higgs models, ... | hep-ph |
Muon transverse polarization in the $K_{l2γ}$ decay in SM: The muon transverse polarization in the $K^+ \to \mu^+ \nu \gamma$ process
induced by the electromagnetic final state interaction is calculated in the
framework of Standard Model. It is shown that one loop contributions lead to a
nonvanihing muon transverse pol... | hep-ph |
Lifetime of quasiparticles in hot gauge theories: The perturbative calculation of the lifetime of charged excitations in
ultrarelativistic plasmas is plagued with infrared divergences which are not
eliminated by the screening corrections. The physical processes responsible for
these divergences are the collisions invol... | hep-ph |
Coulomb-Nuclear Interference:the Latest Modification: We argue that the account of Coulomb-nuclear interference (CNI) in the
differential cross-section of elastic $ pp $ scattering may be easily treated
without introduction of intermediate IR regularization ("photon mass"). We also
indicate that the parametrization use... | hep-ph |
Higgs Radiation off Top Quarks at the Tevatron and the LHC: Higgs bosons can be searched for in the channels $p\bar p/pp\to t\bar tH+X$
at the Tevatron and the LHC. We have calculated the QCD corrections to these
processes in the Standard Model at next-to-leading order. The higher-order
corrections reduce the renormali... | hep-ph |
A Linear Sigma Model with Three Flavors and Vector and Axial-Vector
Mesons: We outline the extension of the globally chirally invariant Nf = 2 linear
sigma model with vector and axial-vector degrees of freedom to Nf=3. We present
preliminary results concerning the scalar meson masses. | hep-ph |
Dark Photon Dark Matter from Cosmic Strings and Gravitational Wave
Background: Dark photon dark matter may be produced by the cosmic strings in association
with the dark U(1) gauge symmetry breaking. We perform three-dimensional
lattice simulations of the Abelian-Higgs model and follow the evolution of
cosmic strings... | hep-ph |
$πK$ sum rules and the SU(3) chiral expansion: A recently proposed set of sum rules, based on the pion-Kaon scattering
amplitudes and their crossing-symmetric conjugates are analysed in detail. A
key role is played by the $l=0$ $\pi\pi\to K\overline K$ amplitude which
requires an extrapolation to be performed. It is sh... | hep-ph |
Proposed Tests of CPT Symmetry Using D Mesons: Parameters describing CPT violation are extracted from a variety of rate
asymmetries in the neutral-$D$ system. The precision to which these parameters
could be measured in present and planned machines is examined. | hep-ph |
Low scale quantum gravity in gauge-Higgs unified models: We consider the scale at which gravity becomes strong in linearized General
Relativity coupled to the gauge-Higgs unified(GHU) model. We also discuss the
unitarity of S-matrix in the same framework. The Kaluza-Klein(KK) gauge bosons,
KK scalars and KK fermions in... | hep-ph |
Transverse momentum distributions of valence quark in light and heavy
vector mesons: We study the leading-twist time-reversal even transverse momentum dependent
parton distribution functions (TMDs) of light and heavy vector mesons, i.e.,
the $\rho$, $J/\psi$ and $\Upsilon$. We employ the leading Fock-state light
fron... | hep-ph |
The Friedberg-Lee model at finite temperature and density: The Friedberg-Lee model is studied at finite temperature and density. By
using the finite temperature field theory, the effective potential of the
Friedberg-Lee model and the bag constant $B(T)$ and $B(T,\mu)$ have been
calculated at different temperatures and ... | hep-ph |
Anomalous $Z'$ effects in the WW channel at NLC: We consider the virtual signals of a $Z'$ of very general type in the process
$e^+e^-\to W^+W^-$ at a future linear collider (NLC). We show that possible
deviations from the SM predictions in this channel are related to similar
deviations in the purely leptonic one in a ... | hep-ph |
Mass-degenerate Higgs bosons at 125 GeV in the Two-Higgs-Doublet Model: The analysis of the Higgs boson data by the ATLAS and CMS Collaborations
appears to exhibit an excess of h --> gamma\gamma events above the Standard
Model (SM) expectations; whereas no significant excess is observed in h --> ZZ*
--> {four lepton} e... | hep-ph |
BEACH 2014 Theory Summary: I summarize key aspects of the quest for physics beyond the Standard Model in
flavour physics as discussed at the BEACH 2014 conference in Birmingham. | hep-ph |
Probing the lightest new gauge boson $B_H$ in the littlest Higgs model
via the processes $γγ\to f\bar{f}B_H$ at the ILC: The neutral gauge boson $B_H$ with the mass of hundreds GeV, is the lightest
particle predicted by the littlest Higgs(LH) model, and such particle should be
the first signal of the LH model at the ... | hep-ph |
Uncovering the Root of LEFT in SMEFT: At energies below the electroweak scale, baryon number $B$ and lepton number
$L$ violating processes are of significant importance in identifying the nature
of UV extensions of the Standard Model. The imprint of UV theories on
low-energy measurements can be calculated to a high acc... | hep-ph |
Delta I=1/2 and epsilon'/epsilon in Large-Nc QCD: We present new results for the matrix elements of the Q_6 and Q_4 penguin
operators, evaluated in a large-Nc approach which incorporates important
O(N_c^2\frac{n_f}{N_c}) unfactorized contributions. Our approach shows analytic
matching between short- and long-distance s... | hep-ph |
An improvement of the Moliere-Fano multiple scattering theory: In the framework of unitary Glauber approximation for particle-atom
scattering, we develop the general formalism of the Moliere-Fano multiple
scattering theory (M-F theory) on the basis of reconstruction of the
generalized optical theorem in it. We present ... | hep-ph |
Generalized Dirac-Pauli equation and spin light of neutrino in
magnetized matter: We consider propagation of a massive neutrino in matter within the quantum
approach based on the two equations for the neutrino field: the first one is
the Dirac-Pauli equation for a massive neutrino in an external magnetic field
genera... | hep-ph |
A semi-analytic method to compute Feynman integrals applied to four-loop
corrections to the $\overline{\rm MS}$-pole quark mass relation: We describe a method to numerically compute multi-loop integrals, depending
on one dimensionless parameter $x$ and the dimension $d$, in the whole
kinematic range of $x$. The metho... | hep-ph |
Diquarks and antiquarks in exotics: a menage a trois and a menage a
quatre: A menage a trois is very different from an ordinary family. Similarly, exotic
hadrons with both qq and qbar q pairs have important color-space correlations
that are completely absent in ordinary mesons and baryons. The presence of both
types ... | hep-ph |
Spatial densities of momentum and forces in spin-one hadrons: Densities associated with the energy-momentum tensor are calculated for
spin-one targets. These calculations are done in a light front formalism, which
accounts for relativistic effects due to boosts and allows for arbitrary
spatial localization of the targe... | hep-ph |
Non-Hermitian Perturbations to the Fritzsch Textures of Lepton and Quark
Mass Matrices: We show that non-Hermitian and nearest-neighbor-interacting perturbations to
the Fritzsch textures of lepton and quark mass matrices can make both of them
fit current experimental data very well. In particular, we obtain \theta_{2... | hep-ph |
NLO Corrections to Heavy Quark Production with Polarized Beams: We present a calculation of the NLO QCD corrections to heavy flavor
photoproduction with longitudinally polarized beams. We apply our results to
study the spin asymmetry for total charm quark production which will be used
for a first direct determination o... | hep-ph |
Probing wrong-sign Yukawa couplings at the LHC and a future linear
collider: We consider the two-Higgs-doublet model as a framework in which to evaluate
the viability of scenarios in which the sign of the coupling of the observed
Higgs boson to down-type fermions (in particular, $b$-quark pairs) is opposite
to that o... | hep-ph |
Strongly interacting matter from holographic QCD model: We introduce the 5-dimension dynamical holographic QCD model, which is
constructed in the graviton-dilaton-scalar framework with the dilaton
background field $\Phi$ and the scalar field $X$ responsible for the
gluodynamics and chiral dynamics, respectively. We rev... | hep-ph |
Twist-4 Matrix Elements of the Nucleon from Recent DIS Data at CERN and
SLAC: We analyse the recent precision measurements of the lepton-hadron deep
inelastic scattering at CERN and SLAC to extract model independent constraints
among the nucleon matrix elements of the twist-4 operators. We also study a
parameterizati... | hep-ph |
Holographic Picture of Heavy Vector Meson Melting: The fraction of heavy vector mesons produced in a heavy ion collision, as
compared to a proton proton collision, serves as an important indication of the
formation of a thermal medium, the quark gluon plasma. This sort of analysis
strongly depends on understanding the ... | hep-ph |
Running Flavor Number and Asymptotic Freedom in the Normal Phase of QED: In the normal phase (where no dynamical fermion mass generation occurs) of
the D-dimensional quantum electrodynamics with $N_f$ flavors of fermions, we
derive an integral equation which should be satisfied by (the inverse of) the
wave function ren... | hep-ph |
Quantitative Study of Geometrical Scaling in Deep Inelastic Scattering
at HERA: We propose a method to assess the quality of geometrical scaling in Deep
Inelastic Scattering and apply it to the combined HERA data on $\gamma^{\ast}p$
cross-section. Using two different approaches based on Bjorken $x$ binning and
binnin... | hep-ph |
Bounds on the Higgs-Boson Mass in the Presence of Non-Standard
Interactions: The triviality and vacuum stability bounds on the Higgs-boson mass are
revisited in the presence of new interactions parameterized in a
model-independent way by an effective lagrangian. When the scale of new physics
is below 50 TeV the trivi... | hep-ph |
The New Pentaquarks in the Diquark Model: Pentaquark baryons are a natural expectation of an extended picture of
hadrons where quarks and diquarks are the fundamental units. The parity/mass
pattern observed, when compared to that of exotic mesons, appears as the
footprint of a compact five-quark structure. What has bee... | hep-ph |
Heavy-Quark Mass and Heavy-Meson Decay Constants from QCD Sum Rules: We present a sum-rule extraction of heavy-meson decay constants from the
two-point correlator of heavy-light pseudoscalar currents. Our main concern is
to control the uncertainties of the decay constants, induced by both input QCD
parameters and limit... | hep-ph |
A Consistent Scenario for B to PS Decays: We consider B to PS decays where P stands for pseudoscalar and S for a heavy
(~1500 MeV) scalar meson. We achieve agreement with available experimental data
-- which includes a two orders of magnitude hierarchy -- assuming the scalars
mesons are two quark states. The contributi... | hep-ph |
Structure of the sigma meson and the softening: We study the structure of the sigma meson, the lowest-lying resonance of the
pi pi scattering in the scalar-isoscalar channel, through the softening
phenomena associated with the partial restoration of chiral symmetry. We build
dynamical chiral models to describe the pi p... | hep-ph |
Search for muon-philic new light gauge boson at Belle II: Motivated by the long-lasting $3.5\sigma$ discrepancy in the anomalous
magnetic moment of muon, we consider a new muon-specific force mediated by a
light gauge boson, $X$, with mass $m_X < 2m_\mu$ and the coupling constant $g_X
\sim (10^{-4}, 10^{-3})$. We show ... | hep-ph |
Selected Topics in Rapidity Gap Physics: This talk will review selected topics in rapidity gap physics. In particular
I will discuss diffractive jet production and the possibility of searching for
the higgs boson using diffraction at the LHC; the dipole picture of diffraction
and saturation; and those processes where a... | hep-ph |
On the Higher Moments of Particle Multiplicity, Chemical Freeze-Out and
QCD Critical Endpoint: We calculate the first six non-normalized moments of particle multiplicity
within the framework of the hadron resonance gas model. In terms of the lower
order moments and corresponding correlation functions, general express... | hep-ph |
TMD evolution of the Sivers asymmetry: The energy scale dependence of the Sivers asymmetry in semi-inclusive deep
inelastic scattering is studied numerically within the framework of TMD
factorization that was put forward in 2011. The comparison to previous results
in the literature shows that the treatment of next-to-l... | hep-ph |
Mass and CKM Matrices of Quarks and Leptons, the Leptonic CP-phase in
neutrino oscillations: A general approach for construction of quark and lepton mass matrices is
formulated. The hierarchy of quarks and charged leptons ("electrons") is large,
it leads using the experimental values of mixing angles to the hierarchi... | hep-ph |
Ratios of Fluctuation Observables in the Search for the QCD Critical
Point: The QCD critical point can be found in heavy ion collision experiments via
the non-monotonic behavior of many fluctuation observables as a function of the
collision energy. The event-by-event fluctuations of various particle
multiplicities ar... | hep-ph |
Probing feebly interacting dark matter with monojet searches: Dark matter may consist of feebly interacting massive particles (FIMPs) that
never thermalized with the cosmic plasma. Their relic density is achieved via
freeze-in for a wide range of masses, significantly expanding the model space
that can be tested compar... | hep-ph |
Pentaquark Magnetic Moments In Different Models: We calculate the magnetic moments of the pentaquark states from different
models and compare our results with predictions of other groups. | hep-ph |
Fermion dispersion in axion medium: The interaction of a fermion with the dense axion medium is investigated for
the purpose of finding an axion medium effect on the fermion dispersion. It is
shown that axion medium influence on the fermion dispersion under astrophysical
conditions is negligible small if the correct La... | hep-ph |
Cerenkov radiation by neutrinos in a supernova core: Neutrinos with a magnetic dipole moment propagating in a medium with a
velocity larger than the phase velocity of light emit photons by the Cerenkov
process. The Cerenkov radiation is a helicity flip process via which a
left-handed neutrino in a supernova core may ch... | hep-ph |
The same-sign top probe for baryon number violation at the LHC: Despite strong experimental evidences for their conservation at low energies,
the baryon $B$ and lepton $L$ numbers are not expected to be absolute
symmetries. Already violated in the Standard Model (SM) by non-perturbative
effects (tiny at low temperature... | hep-ph |
Sphaleron portal baryogenesis: Nontrivial topological vacua of non-Abelian gauge symmetry $SU(3)\times
SU(2)_{L}$ of the Standard Model play an important role in baryogenesis. In
particular, the baryon (and lepton) number violation from $SU(2)_{L}$ sphaleron
is a crucial ingredient for baryogenesis at weak scale or hig... | hep-ph |
Flavor Changing Supersymmetry Interactions in a Supernova: We consider for the first time R-parity violating interactions of the Minimal
Standard Supersymmetric Model involving neutrinos and quarks (``flavor changing
neutral currents'', FCNC's) in the infall stage of stellar collapse. Our
considerations extend to other... | hep-ph |
Radiation reaction and limiting acceleration: We investigate the strong acceleration properties of the radiation reaction
force and identify a new and promising limiting acceleration feature in the
Eliezer-Ford-O'Connell model; in the strong field regime, for many field
configurations, we find an upper limit to acceler... | hep-ph |
Comment on "Chiral symmetry and the intrinsic structure of the nucleon"-
by D.B.Leinweber,A.W.Thomas and R.D.Young: Some remarks are presented on a recent paper (Leinweber,Thomas and Young,
Phys.Rev.Lett. 86, 5011, 2001). In particular a statement of the above paper on
the fact that the ratio between the magnetic mom... | hep-ph |
Supersymmetric Models in Light of Improved Higgs Mass Calculations: We discuss the parameter spaces of supersymmetry (SUSY) scenarios taking into
account the improved Higgs-mass prediction provided by FeynHiggs 2.14.1. Among
other improvements, this prediction incorporates three-loop
renormalization-group effects and t... | hep-ph |
The Suppression of Neutralino Annihilation into Zh: The Indirect Detection of neutralino Dark Matter is most promising through
annihilation channels producing a hard energy spectrum for the detected
particles, such as the neutralino annihilation into $Zh$. A cancellation
however makes this particular annihilation chann... | hep-ph |
The rare decays of D mesons: The flavor changing transitions in the c->u gamma, c->u gamma gamma and c->u
l+ l- offer the possibility to search for new physics in the charm sector. We
investigate dominant decay mechanisms in the radiative decays D->V gamma,
D->P(V) l+ l-, D->gamma gamma and we discuss chances to see ph... | hep-ph |
The high-energy radiation pattern from BFKLex with double-log collinear
contributions: We study high-energy jet production in the multi-Regge limit making use of
the Monte Carlo event generator BFKLex which includes collinear improvements in
the form of double-log contributions as presented in [1]. Making use of the
... | hep-ph |
Charmless hadronic $B_c \to VA, AA$ decays in the perturbative QCD
approach: In this work, we calculate the branching ratios (BRs) and the polarization
fractions of sixty two charmless two-body $B_c$ meson decays into final states
involving one vector and one axial-vector meson ($VA$) or two axial-vector
mesons($AA$)... | hep-ph |
Shooting String Holography of Jet Quenching at RHIC and LHC: We derive a new formula for jet energy loss using finite endpoint momentum
shooting strings initial conditions in SYM plasmas to overcome the difficulties
of previous falling string holographic scenarios. We apply the new formula to
compute the nuclear modifi... | hep-ph |
Non-linear evolution in QCD at high-energy beyond leading order: The next-to-leading order (NLO) Balitsky-Kovchegov (BK) equation describing
the high-energy evolution of the scattering between a dilute projectile and a
dense target suffers from instabilities unless it is supplemented by a proper
resummation of the radi... | hep-ph |
Branching Fractions and Direct CP Violation in Charmless Three-body
Decays of B Mesons: Charmless three-body decays of B mesons is studied using a simple model based
on the framework of the factorization approach. Hadronic three-body decays
receive both resonant and nonresonant contributions. Dominant nonresonant
con... | hep-ph |
A Three-Flavor Chiral Effective Model with Four Baryonic Multiplets
within the Mirror Assignment: In the case of three quark flavors, (pseudo)scalar diquarks transform as
antiquarks under chiral transformations. We construct four spin-1/2 baryonic
multiplets from left- and right-handed quarks as well as left- and rig... | hep-ph |
Two-loop Calculation of Higgs Mass in Gauge-Higgs Unification: 5D
Massless QED Compactified on S^1: We calculate the quantum corrections to the mass of the zero mode of the
fifth component of the gauge field at two-loop level in a five dimensional
massless QED compactified on S^1. We discuss in detail how the diverge... | hep-ph |
Baryon deceleration by strong chromofields in ultrarelativistic nuclear
collisions: It is assumed that strong chromofields are generated at early stages of
ultrarelativistic heavy-ion collisions which give rise to a collective
deceleration of net baryons from colliding nuclei. We have solved classical
equations of mo... | hep-ph |
LHC diboson excesses as an evidence for a heavy WW resonance: Recently reported diboson excesses at LHC are interpreted to be connected
with heavy $WW$ resonance with weak isotopic spin 2. The resonance appears due
to the wouldbe anomalous triple interaction of the weak bosons, which is
defined by well-known coupling c... | hep-ph |
Anomalous Gauge Interactions of the Higgs Boson: Precision Constraints
and Weak Boson Scatterings: Interaction of Higgs scalar (H) with weak gauge bosons (V=W,Z) is the {\it
key} to understand electroweak symmetry breaking (EWSB) mechanism. New physics
effects in the HVV interactions, as predicted by models of compos... | hep-ph |
WPHACT 1.0 - A program for $WW$, Higgs and 4 fermion physics at $e^+
e^-$ colliders: WPHACT (W W and Higgs Physics with PHACT) is a MC program and unweighted
event generator which computes all Standard Model processes with four fermion
in the final state at $e^+ e^-$ colliders. It is based on an helicity amplitude
me... | hep-ph |
Light mesons production at the Tevatron to next-to-leading order: Inclusive production of light mesons ($\pi^0$, $\eta$, $\pi^{\pm}$, $K^{\pm}$
) at the Tevatron is considered in QCD to next-to-leading order in the
formalism of fragmentation functions. We present various distributions of
phenomenological interest, alon... | hep-ph |
Improving the Effective Potential, Multi-Mass Problem and Modified
Mass-Dependent Scheme: We present a new procedure for improving the effective potential by using
renormalization group equation (RGE) in the presence of several mass scales. We
propose a modification of the mass-dependent (MD) renormalization scheme, ... | hep-ph |
A quark model analysis of the Sivers function: We develop a formalism to evaluate the Sivers function. The approach is well
suited for calculations which use constituent quark models to describe the
structure of the nucleon. A non-relativistic reduction of the scheme is
performed and applied to the Isgur-Karl model of ... | hep-ph |
Searching for Ultralight Dark Matter Conversion in Solar Corona using
Low Frequency Array Data: Ultralight dark photons and axions are well-motivated hypothetical dark
matter candidates. Both dark photon dark matter and axion dark matter can
resonantly convert into electromagnetic waves in the solar corona when their... | hep-ph |
Production of Isolated Photons in Deep Inelastic Scattering: We present here the predictions obtained from a calculation of the inclusive
isolated photon production cross section in deep inelastic scattering. The
results are compared with the cross section measurement of the ZEUS
collaboration and found in good agreeme... | hep-ph |
Soft-Wall Stabilization: We propose a general class of five-dimensional soft-wall models with AdS
metric near the ultraviolet brane and four-dimensional Poincar\'e invariance,
where the infrared scale is determined dynamically. A large UV/IR hierarchy can
be generated without any fine-tuning, thus solving the electrowe... | hep-ph |
A model of non-perturbative gluon emission in an initial state parton
shower: We consider a model of transverse momentum production in which
non-perturbative smearing takes place throughout the perturbative evolution, by
a simple modification to an initial state parton shower algorithm. Using this
as the important no... | hep-ph |
CP violation in $B \to φK$ decay and anomalous right-handed top
quark couplings: We explore the CP violation in $B \to \phi K$ decay processes in the presence
of the anomalous right-handed $\bar{t}sW$ and $\bar{t}bW$ couplings. The
complex anomalous top coupling can be a source of the new CP violation and lead
to a d... | hep-ph |
Analyticity Properties and Unitarity Constraints of Heavy Meson Form
Factors: We derive new bounds on the b-number form factor $F(q^2)$ of the B meson.
(Revised version of hep-ph/9306214). | hep-ph |
Impact of axions on the Cassiopea A neutron star cooling: The observed anomalous steady decrease in surface temperature of the
supernova remnant Cassiopeia A (Cas A), which was reported about ten years ago,
has generated much debate. Several exotic cooling scenarios have been proposed
using non-standard assumptions abo... | hep-ph |
Effective theories with maximal analyticity: In this paper (second in the series) we study the properties of tree-level
binary amplitudes of the infinite-component effective field theory of strong
interaction obeying the requirements of quark-hadron duality and maximal
analyticity. In contrast to the previous paper, he... | hep-ph |
Color transparency in deeply inelastic diffraction: We suggest a simple physical picture for the diffractive parton distributions
that appear in diffractive deeply inelastic scattering. In this picture,
partons impinging on the proton can have any transverse separation, but only
when the separation is small can they pe... | hep-ph |
A $L_μ- L_τ$ theory of Higgs flavor violation and $(g-2)_μ$: Several experiments reported hints for the violation of lepton flavor or
lepton flavor universality in processes involving muons. Most prominently,
there is the hint for a non-zero rate of the flavor violating Higgs decay $h
\to \tau\mu$ at the LHC, as well a... | hep-ph |
Probing new physics with high-multiplicity events: UHE neutrinos at
air-shower detector arrays: Semi-classical processes such as production and decay of electroweak
sphaleron in the Standard Model and also microscopic black hole in low scale
gravity scenario typically involve large number of particles in final states... | hep-ph |
The non-perturbative constraint on sea quarks --the strange sea quarks
in the nucleon and the soft pion contribution at high energy--: The mean charge sum rule for the light sea quarks in the nucleon which holds
under the same theoretical footing as the modified Gottfried sum rule shows
that a usual parameterization ... | hep-ph |
Minimal gauge inflation: We consider a gauge inflation model in the simplest orbifold M4 x S1/Z2 with
the minimal non-Abelian SU(2) hidden sector gauge symmetry. The inflaton
potential is fully radiatively generated solely by gauge self-interactions.
Following the virtue of gauge inflation idea, the inflaton, a part of... | hep-ph |
Separate seesaw and its applications to dark matter and baryogenesis: We propose a new seesaw model in an extra-dimensional setup where only
right-handed neutrinos are bulk fields. In the model, localizations of an
extra-dimensional wave function and brane Majorana mass of the right-handed
neutrinos can be different am... | hep-ph |
Heavy baryon spectroscopy: Masses of heavy baryons are calculated in the relativistic quark-diquark
picture. Obtained results are in good agreement with available experimental
data including recent measurements by the LHCb Collaboration. Possible quantum
numbers of excited heavy baryon states are discussed. | hep-ph |
Analytic Study of Small Scale Structure on Cosmic Strings: The properties of string networks at scales well below the horizon are poorly
understood, but they enter critically into many observables. We argue that in
some regimes, stretching will be the only relevant process governing the
evolution. In this case, the str... | hep-ph |
Exclusive hadronic tau decays as probes of non-SM interactions: We perform a global analysis of exclusive hadronic tau decays into one and
two mesons using the low-energy limit of the Standard Model Effective Field
Theory up to dimension six, assuming left-handed neutrinos. A controlled
theoretical input on the Standar... | hep-ph |
HARD PROBES OF DENSE MATTER: Direct probes for the QGP must be hard enough to resolve sub-hadronic scales
($\ll \la^{-1}$) and distinguish confined and deconfined media. This can be
achieved by fast colour charges (jets) and heavy quark resonances (quarkonia).
After a general survey, we study quarkonia as confinement p... | hep-ph |
Pauli-Villars Regularization in a Discrete Light-Cone Model: Pauli-Villars regularization is successfully applied to nonperturbative
calculations in a (3+1)-dimensional light-cone model. Numerical results
obtained with discretized light-cone quantization compare favorably with the
analytic solution. | hep-ph |
pi(-)p atom in ChPT: strong energy-level shift: The general formula of the pi(-)p atom strong energy-level shift in the 1s
state is derived in the next-to-leading order in the isospin breaking, and in
all orders in chiral expansion. Isospin-breaking corrections to the level shift
are explicitly evaluated at order p^2 i... | hep-ph |
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