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A systematical study of the chiral magnetic effects at the RHIC and LHC energies

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Chinese Physics C 2020年第2期44卷 107-114页

作者： Bang-Xiang Chen Sheng-Qin Feng College of Science China Three Gorges UniversityYichang 443002China Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China

Considering the magnetic field response of the QGP medium,we perform a systematical study of the chiral magnetic effect（CME）,and make a comparison with the experimental results for the background-subtracted correlator H at the energies of the RHIC Beam Energy Scan（BES） and the LHC *** CME signals from our computations show a centrality trend and beam energy dependence that are qualitatively consistent with the experimental measurements of the charge dependent *** time evolution of the chiral electromagnetic current at the RHIC and LHC energies is systematically *** dependence of the time-integrated current signal on the beam energy s1/2with different centralities is *** phenomenological analysis shows that the time-integrated electromagnetic current is maximal near the collision energy s1/2≈39 *** qualitative trend of the induced electromagnetic current is in agreement with the CME experimental results at the RHIC and LHC energies.

关键词： chiral magnetic effect chiral electromagnetic current charge separations

Estimation of the chiral magnetic effect considering the magnetic field response of the QGP medium

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Chinese Physics C 2018年第5期42卷 63-69页

作者：冯笙琴艾鑫裴蕾孙飞钟洋殷中宝 College of Science China Three Gorges University Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics Central China Normal University School of Physics and Technology Wuhan University

The magnetic field plays a major role in searching for the chiral magnetic effect in relativistic heavy-ion collisions. If the lifetime of the magnetic field is too short, as predicted by simulations of the field in vacuum, the chiral magnetic effect will be largely suppressed. However, the lifetime of the magnetic field will become longer when the QGP medium response is considered. We give an estimate of the effect, especially considering the magnetic field response of the QGP medium, and compare it with the experimental results for the background-subtracted correlator H at RHIC and LHC energies. The results show that our method explains the experimental results better at the top RHIC energy than at the LHC energy.

关键词： chiral magnetic effect relativistic heavy-ion collisions magnetic field

Gluon Saturation Model with Geometric Scaling for Net-Baryon Distributions in Relativistic Heavy Ion Collisions

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Plasma Science and Technology 2012年第7期14卷 598-602页

作者：李双冯笙琴 Institute of Modern Physics and College of Science China Three Gorges University Yichang 443002 China Key Laboratory of Quark and Lepton Physics (Huazhong Normal University) Ministry of Education Wuhan 430079 China School of Physics and Technology Wuhan University Wuhan 430072 China

The net-baryon number is essentially transported by valence quarks that probe the saturation regime in the target by multiple scattering. The net-baryon distributions, nuclear stopping power and gluon saturation features in the SPS and RHIC energy regions are investigated by taking advantage of the gluon saturation model with geometric scaling. Predications are made for the net-baryon rapidity distributions, mean rapidity loss and gluon saturation features in central Pb ＋ Pb collisions at LHC.

关键词： quark gluon plasma net baryon distribution gluon saturation

Anomalous top-quark coupling effects in rare B and K decays

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Chinese Science Bulletin 2014年第29期59卷 3760-3770页

作者： Ya-Dong Yang Xing-Bo Yuan Institute of Particle Physics Central China Normal University Key Laboratory of Quark and Lepton Physics Ministry of Education

The Large Hadron Collider at CERN is performing direct searches for top-quark anomalous flavorchanging neutral current(FCNC)***,these processes may be correlated closely with the lowenergy rare B and K meson *** this paper,we review the anomalous top-quark coupling effects in these low-energy flavor transitions,summarize the flavor constraints and discuss their implications for direct detection of top-FCNC processes at the Large Hadron Collider.

关键词：耦合效应顶夸克反常大型强子对撞机 K衰变欧洲核子研究中心中性线电流直接搜索