We propose a novel method to search for the chiral magnetic effect（cme） in heavy ion collisions.We argue that the relative strength of the magnetic field（mainly from spectator protons and responsible for the cme）w...We propose a novel method to search for the chiral magnetic effect（cme） in heavy ion collisions.We argue that the relative strength of the magnetic field（mainly from spectator protons and responsible for the cme）with respect to the reaction plane and the participant plane is opposite to that of the elliptic flow background arising from the fluctuating participant geometry.This opposite behavior in a single collision system,hence with small systematic uncertainties,can be exploited to extract the possible cme signal from the flow background.The method is applied to existing data from rhic,and the outcome discussed.展开更多
We derive an Abelian-like Ward identity in the color superconducting phase and calculate vertex corrections to the color superconducting gap. Making use of the Ward identity, we show that subleading order contribution...We derive an Abelian-like Ward identity in the color superconducting phase and calculate vertex corrections to the color superconducting gap. Making use of the Ward identity, we show that subleading order contributions to the gap from vertices are absent for gapped excitations.展开更多
The chiral magnetic effect(CME)is a novel transport phenomenon,arising from the interplay between quantum anomalies and strong magnetic fields in chiral systems.In high-energy nuclear collisions,the CME may survive th...The chiral magnetic effect(CME)is a novel transport phenomenon,arising from the interplay between quantum anomalies and strong magnetic fields in chiral systems.In high-energy nuclear collisions,the CME may survive the expansion of the quark-gluon plasma fireball and be detected in experiments.Over the past two decades,experimental searches for the CME have attracted extensive interest at the Relativistic Heavy Ion Collider(RHIC)and the Large Hadron Collider(LHC).The main goal of this study is to investigate three pertinent experimental approaches:the$\gamma$correlator,the R correlator,and the signed balance functions.We exploit simple Monte Carlo simulations and a realistic event generator(EBE-AVFD)to verify the equivalence of the core components among these methods and to ascertain their sensitivities to the CME signal and the background contributions for the isobar collisions at the RHIC.展开更多
基金Supported by National Natural Science Foundation of China(11647306,11747312,U1732138,11505056,11605054,11628508)US Department of Energy(DE-SC0012910)
文摘We propose a novel method to search for the chiral magnetic effect（cme） in heavy ion collisions.We argue that the relative strength of the magnetic field（mainly from spectator protons and responsible for the cme）with respect to the reaction plane and the participant plane is opposite to that of the elliptic flow background arising from the fluctuating participant geometry.This opposite behavior in a single collision system,hence with small systematic uncertainties,can be exploited to extract the possible cme signal from the flow background.The method is applied to existing data from rhic,and the outcome discussed.
基金Supported by 100 Talents Programme of Chinese Academy of SciencesNational Natural Science Foundation of China(10675109, 10735040)
文摘We derive an Abelian-like Ward identity in the color superconducting phase and calculate vertex corrections to the color superconducting gap. Making use of the Ward identity, we show that subleading order contributions to the gap from vertices are absent for gapped excitations.
基金Supported by the US Department of Energy(DE-AC02-98CH10886,DE-FG02-89ER40531,DE-FG02-92ER40713,DE-FG02-88ER40424,DE-SC0012910,DE-SC0013391,DE-SC0020651)the National Natural Science Foundation of China(12025501,11905059,12075085)+6 种基金the Strategic Priority Research Program of Chinese Academy of Science with(XDB34030200)the Fundamental Research Funds for the Central Universities(CCNU19ZN019)the Ministry of Science and Technology(MoST)(2016YFE0104800)the China Scholarship Council(CSC),Join Large-Scale Scientific Facility Funds of NSFC and CAS(U2032110)the U.S.Department of Energy,Office of Science,Office of Nuclear Physics,within the framework of the Beam Energy Scan Theory(BEST)Topical Collaborationthe U.S.National Science Foundation(PHY-1913729)the Natural Sciences and Engineering Research Council of Canada,the Fonds de recherche du Québec-Nature et technologies(FRQNT)through the Programmede Bourses d'ExcellencepourÉtudiantsÉtrangers(PBEEE)。
文摘The chiral magnetic effect(CME)is a novel transport phenomenon,arising from the interplay between quantum anomalies and strong magnetic fields in chiral systems.In high-energy nuclear collisions,the CME may survive the expansion of the quark-gluon plasma fireball and be detected in experiments.Over the past two decades,experimental searches for the CME have attracted extensive interest at the Relativistic Heavy Ion Collider(RHIC)and the Large Hadron Collider(LHC).The main goal of this study is to investigate three pertinent experimental approaches:the$\gamma$correlator,the R correlator,and the signed balance functions.We exploit simple Monte Carlo simulations and a realistic event generator(EBE-AVFD)to verify the equivalence of the core components among these methods and to ascertain their sensitivities to the CME signal and the background contributions for the isobar collisions at the RHIC.
