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Measurement of D
Adamczyk, L; Adkins, J K; Agakishiev, G; Aggarwal, M M; Ahammed, Z; Ajitanand, N N; 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; Behera, A; 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; Brown, D; Bunzarov, I; Butterworth, J; Caines, H; Calderón de la Barca Sánchez, M; Campbell, J M; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, X; Chen, J H; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, H J.
Afiliación
  • Adamczyk L; AGH University of Science and Technology, FPACS, Cracow 30-059, Poland.
  • Adkins JK; University of Kentucky, Lexington, Kentucky 40506-0055.
  • 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.
  • Ajitanand NN; State University of New York, Stony Brook, New York 11794.
  • 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.
  • Aparin A; University of Tsukuba, Tsukuba, Ibaraki, Japan.
  • Arkhipkin D; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Aschenauer EC; Brookhaven National Laboratory, Upton, New York 11973.
  • Ashraf MU; Brookhaven National Laboratory, Upton, New York 11973.
  • Attri A; Tsinghua University, Beijing 100084.
  • 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.
  • Behera A; National Institute of Science Education and Research, HBNI, Jatni 752050, India.
  • Bellwied R; State University of New York, Stony Brook, New York 11794.
  • Bhasin A; University of Houston, Houston, Texas 77204.
  • Bhati AK; University of Jammu, Jammu 180001, India.
  • Bhattarai P; Panjab University, Chandigarh 160014, India.
  • Bielcik J; University of Texas, Austin, Texas 78712.
  • 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.
  • Bouchet J; Alikhanov Institute for Theoretical and Experimental Physics, Moscow 117218, Russia.
  • Brandenburg JD; Kent State University, Kent, Ohio 44242.
  • Brandin AV; Rice University, Houston, Texas 77251.
  • Brown D; National Research Nuclear University MEPhI, Moscow 115409, Russia.
  • Bunzarov I; Lehigh University, Bethlehem, Pennsylvania 18015.
  • Butterworth J; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Caines H; Rice University, Houston, Texas 77251.
  • Calderón de la Barca Sánchez M; Yale University, New Haven, Connecticut 06520.
  • Campbell JM; University of California, Davis, California 95616.
  • Cebra D; Ohio State University, Columbus, Ohio 43210.
  • Chakaberia I; University of California, Davis, California 95616.
  • Chaloupka P; Brookhaven National Laboratory, Upton, New York 11973.
  • Chang Z; Czech Technical University in Prague, FNSPE, Prague 115 19, Czech Republic.
  • Chankova-Bunzarova N; Texas A&M University, College Station, Texas 77843.
  • Chatterjee A; Joint Institute for Nuclear Research, Dubna 141 980, Russia.
  • Chattopadhyay S; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Chen X; Variable Energy Cyclotron Centre, Kolkata 700064, India.
  • Chen JH; University of Science and Technology of China, Hefei, Anhui 230026.
  • Chen X; Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800.
  • Cheng J; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000.
  • Cherney M; Tsinghua University, Beijing 100084.
  • Christie W; Creighton University, Omaha, Nebraska 68178.
  • Contin G; Brookhaven National Laboratory, Upton, New York 11973.
  • Crawford HJ; Lawrence Berkeley National Laboratory, Berkeley, California 94720.
Phys Rev Lett ; 118(21): 212301, 2017 May 26.
Article en En | MEDLINE | ID: mdl-28598664
We report the first measurement of the elliptic anisotropy (v_{2}) of the charm meson D^{0} at midrapidity (|y|<1) in Au+Au collisions at sqrt[s_{NN}]=200 GeV. The measurement was conducted by the STAR experiment at RHIC utilizing a new high-resolution silicon tracker. The measured D^{0} v_{2} in 0%-80% centrality Au+Au collisions can be described by a viscous hydrodynamic calculation for a transverse momentum (p_{T}) of less than 4 GeV/c. The D^{0} v_{2} as a function of transverse kinetic energy (m_{T}-m_{0}, where m_{T}=sqrt[p_{T}^{2}+m_{0}^{2}]) is consistent with that of light mesons in 10%-40% centrality Au+Au collisions. These results suggest that charm quarks have achieved local thermal equilibrium with the medium created in such collisions. Several theoretical models, with the temperature-dependent, dimensionless charm spatial diffusion coefficient (2πTD_{s}) in the range of ∼2-12, are able to simultaneously reproduce our D^{0} v_{2} result and our previously published results for the D^{0} nuclear modification factor.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2017 Tipo del documento: Article País de afiliación: Polonia Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2017 Tipo del documento: Article País de afiliación: Polonia Pais de publicación: Estados Unidos