Showing 2006 · hep-phShow all

23 papers · 2 filters

hep-ph2006★ 6 cited

Search for new physics from

Jian-Feng Cheng, Yuan-Ning Gao, Chao-Shang Huang +1

We investigate the pure penguin process using QCD factorization approach to calculate hadronic matrix elements to the order in some well-known NP models. It is…

hep-ph2006★ 11 cited

Meson Mixing in Pion Superfluid

Xuewen Hao, Pengfei Zhuang

We investigate meson mixing and meson coupling constants in pion superfluid in the framework of two flavor NJL model at finite isospin density. The mixing strength develops fast wi…

hep-ph2006★ 5 cited

Virtual Effects of Split SUSY in Higgs Productions at Linear Colliders

Fei Wang, Wenyu Wang, Fuqiang Xu +2

In split supersymmetry the gauginos and higgsinos are the only supersymmetric particles possibly accessible at foreseeable colliders like the CERN Large Hadron Collider (LHC) and t…

hep-ph2006★ 17 cited

QCD corrections to single slepton production at hadron colliders

Yu-Qi Chen, Tao Han, Zong-Guo Si

We evaluate the cross section for single slepton production at hadron colliders in supersymmetric theories with R-parity violating interactions to the next-to-leading order in QCD.…

hep-ph2006★ 20 cited

The Oblique Corrections from Heavy Scalars in Irreducible Representations

Hong-Hao Zhang, Wen-Bin Yan, Xue-Song Li

The contributions to , , and from heavy scalars in any irreducible representation of the electroweak gauge group are obtained. We find that in the…

hep-ph2006★ 15 cited

Wedgebox analysis of four-lepton events from neutralino pair production at the LHC

Guang Bian, Mike Bisset, Nicholas Kersting +2

`Wedgebox' plots constructed by plotting the di-electron invariant mass versus the di-muon invariant mass from pp -> e^+e^- mu^+ mu^- + missing energy signature LHC events. Data se…

hep-ph2006★ 11 cited

The Effects on , , and from Higher-Dimensional Fermion Representations

Hong-Hao Zhang, Yue Cao, Qing Wang

Inspired by a new class of walking technicolor models recently proposed using higher-dimensional technifermions, we consider the oblique corrections from heavy non-degenerate fermi…

hep-ph2006★ 99 cited

Neutrino Mass and Baryon Asymmetry from Dirac Seesaw

Pei-Hong Gu, Hong-Jian He

We extend the visible content of the standard model (SM) with a hidden sector composed of three right-handed singlet neutrinos and one singlet Higgs. These extra singlets are charg…

hep-ph2006★ 27 cited

Neutral Color Superconductivity Including Inhomogeneous Phases at Finite Temperature

Lianyi He, Meng Jin, Pengfei Zhuang

We investigate neutral quark matter with homogeneous and inhomogeneous color condensates at finite temperature in the frame of an extended NJL model. By calculating the Meissner ma…

hep-ph2006★ 7 cited

Magnetic Stability Analysis for Abelian and Non-Abelian Superconductors

Lianyi He, Meng Jin, Pengfei Zhuang

We investigate the origin of Abelian and non-Abelian type magnetic instabilities induced by Fermi surface mismatch between the two pairing fermions in a non-relativistic model. The…

hep-ph2006★ 4 cited

Hadronic Transition chi(c1)(1P) to eta(c) plus two pions at the Beijing Spectrometer BES and the Cornell CLEO-c

Qin Lu, Yu-Ping Kuang

Hadronic transitions of the chi(cj)(1P) states have not been studied yet. We calculate the rate of the hadronic transition chi(c1)(1P) to eta(c) plus two pions in the framework of…

hep-ph2006★ 10 cited

B/s0 anti-B/s0 mixing in the MSSM with large tan beta

J. K. Parry

The Bs-Bsbar mixing parameter Delta Ms is studied in the MSSM with large tan beta. The recent Tevatron measurement of Delta Ms is used to constrain the MSSM parameter space. From t…

hep-ph2006★ 73 cited

Directed and elliptic flow in heavy ion collisions from MeV/nucleon to GeV/nucleon

Hannah Petersen, Qingfeng Li, Xianglei Zhu +1

Recent data from the NA49 experiment on directed and elliptic flow for Pb+Pb reactions at CERN-SPS are compared to calculations with a hadron-string transport model, the Ultra-rela…

hep-ph2006★ 116 cited

A Three Site Higgsless Model

R. Sekhar Chivukula, Baradhwaj Coleppa, Stefano Di Chiara +4

We analyze the spectrum and properties of a highly-deconstructed Higgsless model with only three sites. Such a model contains sufficient complexity to incorporate interesting physi…

hep-ph2006★ 43 cited

Can four-zero-texture mass matrix model reproduce the observed quark and lepton mixing angles and CP violating phases?

Koichi Matsuda, Hiroyuki Nishiura

We reconsider an universal mass matrix model which has a seesaw-invariant structure with four-zero texture common to all quarks and leptons. The CKM quark and MNS lepton mixing mat…

hep-ph2006★ 7 cited

Higgsless Models: Lessons from Deconstruction

E. H. Simmons, R. S. Chivukula, H. -J. He +2

This talk reviews recent progress in Higgsless models of electroweak symmetry breaking, and summarizes relevant points of model-building and phenomenology.

hep-ph2006★ 71 cited

Pion Condensation in Baryonic Matter: from Sarma Phase to Larkin-Ovchinnikov-Fudde-Ferrell Phase

Lianyi He, Meng Jin, Pengfei Zhuang

We investigated two pion condensed phases in the frame of the two flavor Nambu--Jona-Lasinio model at finite baryon density: the homogeneous and isotropic Sarma phase and inhomogen…

hep-ph2006★ 43 cited

D-Dbar Correlations as a sensitive probe for thermalization in high-energy nuclear collisions

X. Zhu, M. Bleicher, S. L. Huang +4

We propose to measure azimuthal correlations of heavy-flavor hadrons to address the status of thermalization at the partonic stage of light quarks and gluons in high-energy nuclear…

hep-ph2006★ 250 cited

Signatures for Majorana neutrinos at hadron colliders

Tao Han, Bin Zhang

The Majorana nature of neutrinos may only be experimentally verified via lepton-number violating processes involving charged leptons. We explore the like-sign dilepton produ…

hep-ph2006★ 11 cited

Chiral Phase Structure at Finite Temperature and Density in Einstein Universe

Xuguang Huang, Xuewen Hao, Pengfei Zhuang

The gravitational effect on the chiral phase structure at finite temperature and density is investigated in the framework of Nambu--Jona-Lasinio model in -dimensional ultrastati…

hep-ph2006★ 3 cited

Gauge and Lorentz Covariant Schwinger-Dyson Equation for Fermion Propagator in Arbitrary External Gauge Field

Xiang Chen, Ying Zhang, Fa-Min Chen +1

A formalism of gauge and Lorentz covariant Schwinger-Dyson equation is built up for fermion propagator in presence of arbitrary external gauge field within ladder approximation. Di…

hep-ph2006★ 94 cited

QCD Multipole Expansion and Hadronic Transitions in Heavy Quarkonium Systems

Yu-Ping Kuang

We review the developments of QCD multipole expansion and its applications to hadronic transitions and some radiative decays of heavy quarkonia. Theoretical predictions are compsre…

hep-ph2006★ 23 cited

Threshold Resummation Effects in Direct Top Quark Production at Hadron Colliders

Li Lin Yang, Chong Sheng Li, Yang Gao +1

We investigate the threshold-enhanced QCD corrections to the cross sections for direct top quark productions induced by model-independent flavor changing neutral current couplings…