Suppression and azimuthal anisotropy of prompt and nonprompt J/ψ production in PbPb collisions at √s[subscript NN] =2.76 TeV

• Main Authors: Abercrombie, Daniel Robert (Contributor), Allen, Brandon Leigh (Contributor), Apyan, Aram (Contributor), Barbieri, Richard Alexander (Contributor), Baty, Austin Alan (Contributor), Bi, Ran (Contributor), Bierwagen, Katharina (Contributor), Brandt, Stephanie Akemi (Contributor), Cali, Ivan Amos (Contributor), Demiragli, Zeynep (Contributor), Di Matteo, Leonardo (Contributor), Gomez-Ceballos, Guillelmo (Contributor), Goncharov, Maxim (Contributor), Hsu, Dylan George (Contributor), Iiyama, Yutaro (Contributor), Innocenti, Gian Michele (Contributor), Klute, Markus (Contributor), Kovalskyi, Dmytro (Contributor), Krajczar, Krisztian F. (Contributor), Lai, Yue Shi (Contributor), Lee, Yen-Jie (Contributor), Levin, Andrew Michael (Contributor), Luckey Jr, P David (Contributor), Maier, Benedikt (Contributor), Marini, Andrea Carlo (Contributor), McGinn, Christopher Francis (Contributor), Mironov, Camelia Maria (Contributor), Narayanan, Siddharth Madhavan (Contributor), Nahn, Steven (Contributor), Roland, Christof E (Contributor), Roland, Gunther M (Contributor), Salfeld-Nebgen, Jakob Maxillian Henry (Contributor), Stephans, George S. F. (Contributor), Sumorok, Konstanty C (Contributor), Tatar, Kaya (Contributor), Varma, Mukund Madhav (Contributor), Velicanu, Dragos Alexandru (Contributor), Wang, J. (Contributor), Wang, Ta-Wei (Contributor), Wyslouch, Boleslaw (Contributor), Yang, Mingming (Contributor), Wyslouch, Victoria (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), Massachusetts Institute of Technology. Laboratory for Nuclear Science (Contributor)
• Format: Article
• Language: English
• Published: Springer Nature, 2018-11-02T20:23:52Z.
• Subjects: Article
• Online Access: Get fulltext

 The nuclear modification factor R[subscript AA] and the azimuthal anisotropy coefficient v[subscript 2] of prompt and nonprompt (i.e. those from decays of b hadrons) J/ψ mesons, measured from PbPb and pp collisions at √s[subscript NN] = 2.76TeV at the LHC, are reported. The results are presented in several event centrality intervals and several kinematic regions, for transverse momenta p[subscript T]> 6.5 GeV/c and rapidity | y| < 2.4 , extending down to p[subscript T] = 3 GeV/c in the 1.6 < | y| < 2.4 range. The v[subscript 2] of prompt J/ ψ is found to be nonzero, but with no strong dependence on centrality, rapidity, or pTover the full kinematic range studied. The measured v[subscript 2] of nonprompt J/ψ is consistent with zero. The R[subscript AA] of prompt J/ψ exhibits a suppression that increases from peripheral to central collisions but does not vary strongly as a function of either y or pTin the fiducial range. The nonprompt J/ψ R[subscript AA] shows a suppression which becomes stronger as rapidity or p[subscript T] increases. The v[subscript 2] and R[subscript AA] of open and hidden charm, and of open charm and beauty, are compared.