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Charge-Dependent Directed Flow in Cu+Au Collisions at sqrt[s_{NN}]=200 GeV.
Adamczyk, L; Adkins, J K; Agakishiev, G; Aggarwal, M M; Ahammed, Z; Alekseev, I; Anderson, D M; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, E C; Ashraf, M U; Attri, A; Averichev, G S; Bai, X; Bairathi, V; Bellwied, R; Bhasin, A; Bhati, A K; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, L C; Bordyuzhin, I G; Bouchet, J; Brandenburg, J D; Brandin, A V; Bunzarov, I; Butterworth, J; Caines, H; Calderón de la Barca Sánchez, M; Campbell, J M; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chatterjee, A; Chattopadhyay, S; Chen, X; Chen, J H; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, H J; Das, S; De Silva, L C; Debbe, R R; Dedovich, T G; Deng, J.
Afiliação
  • Adamczyk L; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland.
  • Adkins JK; University of Kentucky, Lexington, Kentucky 40506-0055, USA.
  • Agakishiev G; Joint Institute for Nuclear Research, Dubna, 141 980, Russia.
  • 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, Moscow 117218, Russia.
  • Anderson DM; National Research Nuclear University MEPhI, Moscow 115409, Russia.
  • Aoyama R; Texas A&M University, College Station, Texas 77843, USA.
  • Aparin A; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Arkhipkin D; Joint Institute for Nuclear Research, Dubna, 141 980, Russia.
  • Aschenauer EC; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Ashraf MU; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Attri A; Tsinghua University, Beijing 100084, China.
  • Averichev GS; Panjab University, Chandigarh 160014, India.
  • Bai X; Joint Institute for Nuclear Research, Dubna, 141 980, Russia.
  • Bairathi V; Central China Normal University, Wuhan, Hubei 430079, China.
  • Bellwied R; National Institute of Science Education and Research, Bhubaneswar 751005, India.
  • Bhasin A; University of Houston, Houston, Texas 77204, USA.
  • Bhati AK; University of Jammu, Jammu 180001, India.
  • Bhattarai P; Panjab University, Chandigarh 160014, India.
  • Bielcik J; University of Texas, Austin, Texas 78712, USA.
  • Bielcikova J; Czech Technical University in Prague, FNSPE, Prague, 115 19, Czech Republic.
  • Bland LC; Nuclear Physics Institute AS CR, 250 68 Prague, Czech Republic.
  • Bordyuzhin IG; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Bouchet J; Alikhanov Institute for Theoretical and Experimental Physics, Moscow 117218, Russia.
  • Brandenburg JD; Kent State University, Kent, Ohio 44242, USA.
  • Brandin AV; Rice University, Houston, Texas 77251, USA.
  • Bunzarov I; National Research Nuclear University MEPhI, Moscow 115409, Russia.
  • Butterworth J; Joint Institute for Nuclear Research, Dubna, 141 980, Russia.
  • Caines H; Rice University, Houston, Texas 77251, USA.
  • Calderón de la Barca Sánchez M; Yale University, New Haven, Connecticut 06520, USA.
  • Campbell JM; University of California, Davis, California 95616, USA.
  • Cebra D; Ohio State University, Columbus, Ohio 43210, USA.
  • Chakaberia I; University of California, Davis, California 95616, USA.
  • Chaloupka P; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Chang Z; Czech Technical University in Prague, FNSPE, Prague, 115 19, Czech Republic.
  • Chatterjee A; Texas A&M University, College Station, Texas 77843, USA.
  • Chattopadhyay S; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Chen X; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Chen JH; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
  • Cheng J; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
  • Cherney M; Tsinghua University, Beijing 100084, China.
  • Christie W; Creighton University, Omaha, Nebraska 68178, USA.
  • Contin G; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Crawford HJ; Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
  • Das S; University of California, Berkeley, California 94720, USA.
  • De Silva LC; Institute of Physics, Bhubaneswar 751005, India.
  • Debbe RR; Creighton University, Omaha, Nebraska 68178, USA.
  • Dedovich TG; Brookhaven National Laboratory, Upton, New York 11973, USA.
  • Deng J; Joint Institute for Nuclear Research, Dubna, 141 980, Russia.
Phys Rev Lett ; 118(1): 012301, 2017 Jan 06.
Article em En | MEDLINE | ID: mdl-28106415
ABSTRACT
We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sqrt[s_{NN}]=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference between the directed flow of positive and negative charged particles is observed that qualitatively agrees with the expectations from the effects of the initial strong electric field between two colliding ions with different nuclear charges. The measured difference in directed flow is much smaller than that obtained from the parton-hadron-string-dynamics model, which suggests that most of the electric charges, i.e., quarks and antiquarks, have not yet been created during the lifetime of the strong electric field, which is of the order of, or less than, 1 fm/c.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article