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    Beam Energy Dependence of Jet-Quenching Effects in Au+Au Collisions at sNN =7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV

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    1707.01988v1.pdf
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    Genre
    Pre-print
    Date
    2018-07-19
    Author
    Adamczyk, L
    Adams, JR
    Adkins, JK
    Agakishiev, G
    Aggarwal, MM
    Ahammed, Z
    Ajitanand, NN
    Alekseev, I
    Anderson, DM
    Aoyama, R
    Aparin, A
    Arkhipkin, D
    Aschenauer, EC
    Ashraf, MU
    Attri, A
    Averichev, GS
    Bai, X
    Bairathi, V
    Barish, K
    Behera, A
    Bellwied, R
    Bhasin, A
    Bhati, AK
    Bhattarai, P
    Bielcik, J
    Bielcikova, J
    Bland, LC
    Bordyuzhin, IG
    Bouchet, J
    Brandenburg, JD
    Brandin, AV
    Brown, D
    Bunzarov, I
    Butterworth, J
    Caines, H
    de la Barca Sánchez, MC
    Campbell, JM
    Cebra, D
    Chakaberia, I
    Chaloupka, P
    Chang, Z
    Chankova-Bunzarova, N
    Chatterjee, A
    Chattopadhyay, S
    Chen, JH
    Chen, X
    Chen, X
    Cheng, J
    Cherney, M
    Christie, W
    Contin, G
    Crawford, HJ
    Das, S
    De Silva, LC
    Debbe, RR
    Dedovich, TG
    Deng, J
    Derevschikov, AA
    Didenko, L
    Dilks, C
    Dong, X
    Drachenberg, JL
    Draper, JE
    Dunkelberger, LE
    Dunlop, JC
    Efimov, LG
    Elsey, N
    Engelage, J
    Eppley, G
    Esha, R
    Esumi, S
    Evdokimov, O
    Ewigleben, J
    Eyser, O
    Fatemi, R
    Fazio, S
    Federic, P
    Federicova, P
    Fedorisin, J
    Feng, Z
    Filip, P
    Finch, E
    Fisyak, Y
    Flores, CE
    Fujita, J
    Fulek, L
    Gagliardi, CA
    Garand, D
    Geurts, F
    Gibson, A
    Girard, M
    Grosnick, D
    Gunarathne, DS
    Guo, Y
    Gupta, S
    Gupta, A
    Guryn, W
    Hamad, AI
    Hamed, A
    Harlenderova, A
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    Subject
    STAR Collaboration
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/4424
    
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    DOI
    10.1103/PhysRevLett.121.032301
    Abstract
    © 2018 American Physical Society. We report measurements of the nuclear modification factor RCP for charged hadrons as well as identified π+(-), K+(-), and p(p) for Au+Au collision energies of sNN=7.7, 11.5, 14.5, 19.6, 27, 39, and 62.4 GeV. We observe a clear high-pT net suppression in central collisions at 62.4 GeV for charged hadrons which evolves smoothly to a large net enhancement at lower energies. This trend is driven by the evolution of the pion spectra but is also very similar for the kaon spectra. While the magnitude of the proton RCP at high pT does depend on the collision energy, neither the proton nor the antiproton RCP at high pT exhibit net suppression at any energy. A study of how the binary collision-scaled high-pT yield evolves with centrality reveals a nonmonotonic shape that is consistent with the idea that jet quenching is increasing faster than the combined phenomena that lead to enhancement.
    Citation to related work
    American Physical Society (APS)
    Has part
    Physical Review Letters
    ADA compliance
    For Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
    ae974a485f413a2113503eed53cd6c53
    http://dx.doi.org/10.34944/dspace/4406
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