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Search for the Chiral Magnetic Effect via Charge-Dependent Azimuthal Correlations Relative to Spectator and Participant Planes in Au+Au Collisions at sqrt[s_{NN}]=200 GeV.
Abdallah, M S; Adam, J; Adamczyk, L; Adams, J R; Adkins, J K; Agakishiev, G; Aggarwal, I; Aggarwal, M M; Ahammed, Z; Alekseev, I; Anderson, D M; Aparin, A; Aschenauer, E C; Ashraf, M U; Atetalla, F G; Attri, A; Averichev, G S; Bairathi, V; Baker, W; Ball Cap, J G; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, I G; Brandenburg, J D; Brandin, A V; Bunzarov, I; Butterworth, J; Cai, X Z; Caines, H; Calderón de la Barca Sánchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, B K; Chang, F-H; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, D; Chen, J; Chen, J H; Chen, X; Chen, Z; Cheng, J.
Affiliation
  • Abdallah MS; American University of Cairo, New Cairo 11835, New Cairo, Egypt.
  • Adam J; Brookhaven National Laboratory, Upton, New York 11973.
  • Adamczyk L; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland.
  • Adams JR; Ohio State University, Columbus, Ohio 43210.
  • Adkins JK; University of Kentucky, Lexington, Kentucky 40506-0055.
  • Agakishiev G; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Aggarwal I; Panjab University, Chandigarh 160014, India.
  • Aggarwal MM; Panjab University, Chandigarh 160014, India.
  • Ahammed Z; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Alekseev I; Alikhanov Institute for Theoretical and Experimental Physics NRC "Kurchatov Institute", Moscow 117218, Russia.
  • Anderson DM; National Research Nuclear University MEPhI, Moscow 115409, Russia.
  • Aparin A; Texas A&M University, College Station, Texas 77843.
  • Aschenauer EC; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Ashraf MU; Brookhaven National Laboratory, Upton, New York 11973.
  • Atetalla FG; Central China Normal University, Wuhan, Hubei 430079.
  • Attri A; Kent State University, Kent, Ohio 44242.
  • Averichev GS; Panjab University, Chandigarh 160014, India.
  • Bairathi V; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Baker W; Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile.
  • Ball Cap JG; University of California, Riverside, California 92521.
  • Barish K; University of Houston, Houston, Texas 77204.
  • Behera A; University of California, Riverside, California 92521.
  • Bellwied R; State University of New York, Stony Brook, New York 11794.
  • Bhagat P; University of Houston, Houston, Texas 77204.
  • Bhasin A; University of Jammu, Jammu 180001, India.
  • Bielcik J; University of Jammu, Jammu 180001, India.
  • Bielcikova J; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
  • Bordyuzhin IG; Nuclear Physics Institute of the CAS, Rez 250 68, Czech Republic.
  • Brandenburg JD; Alikhanov Institute for Theoretical and Experimental Physics NRC "Kurchatov Institute", Moscow 117218, Russia.
  • Brandin AV; Brookhaven National Laboratory, Upton, New York 11973.
  • Bunzarov I; National Research Nuclear University MEPhI, Moscow 115409, Russia.
  • Butterworth J; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Cai XZ; Rice University, Houston, Texas 77251.
  • Caines H; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800.
  • Calderón de la Barca Sánchez M; Yale University, New Haven, Connecticut 06520.
  • Cebra D; University of California, Davis, California 95616.
  • Chakaberia I; University of California, Davis, California 95616.
  • Chaloupka P; Brookhaven National Laboratory, Upton, New York 11973.
  • Chan BK; Lawrence Berkeley National Laboratory, Berkeley, California 94720.
  • Chang FH; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
  • Chang Z; University of California, Los Angeles, California 90095.
  • Chankova-Bunzarova N; National Cheng Kung University, Tainan 70101.
  • Chatterjee A; Brookhaven National Laboratory, Upton, New York 11973.
  • Chattopadhyay S; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Chen D; Central China Normal University, Wuhan, Hubei 430079.
  • Chen J; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Chen JH; University of California, Riverside, California 92521.
  • Chen X; Shandong University, Qingdao, Shandong 266237.
  • Chen Z; Fudan University, Shanghai, 200433.
  • Cheng J; University of Science and Technology of China, Hefei, Anhui 230026.
Phys Rev Lett ; 128(9): 092301, 2022 Mar 04.
Article in En | MEDLINE | ID: mdl-35302834
The chiral magnetic effect (CME) refers to charge separation along a strong magnetic field due to imbalanced chirality of quarks in local parity and charge-parity violating domains in quantum chromodynamics. The experimental measurement of the charge separation is made difficult by the presence of a major background from elliptic azimuthal anisotropy. This background and the CME signal have different sensitivities to the spectator and participant planes, and could thus be determined by measurements with respect to these planes. We report such measurements in Au+Au collisions at a nucleon-nucleon center-of-mass energy of 200 GeV at the Relativistic Heavy-Ion Collider. It is found that the charge separation, with the flow background removed, is consistent with zero in peripheral (large impact parameter) collisions. Some indication of finite CME signals is seen in midcentral (intermediate impact parameter) collisions. Significant residual background effects may, however, still be present.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2022 Type: Article Affiliation country: Egypt
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Phys Rev Lett Year: 2022 Type: Article Affiliation country: Egypt