phi meson production in the forward/backward rapidity region in Cu plus Au collisions at root s(NN)=200 GeV

Date
2016-02-04
Authors
Adare, Andrew
Apadula, N.
Campbell, Sarah
Ding, Lei
Dion, Alan
Hill, John
Hotvedt, Nels
Kempel, Todd
Lajoie, John
Lebedev, Alexandre
Ogilvie, Craig
Patel, Milap
Pei, H.
Perry, Joshua
Rinn, Timothy
Rosati, Marzia
Shaver, Alex
Shimomura, M.
Silva, C.
Timilsina, Arbin
Wei, Feng
Whitaker, Shawn
et al.
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Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider has measured phi meson production and its nuclear modification in asymmetric Cu + Au heavy-ion collisions at root s(NN) = 200 GeV at both forward Cu-going direction (1.2 < y < 2.2) and backward Au-going direction (-2.2 < y < -1.2) rapidities. The measurements are performed via the dimuon decay channel and reported as a function of the number of participating nucleons, rapidity, and transverse momentum. In the most central events, 0%-20% centrality, the phi meson yield integrated over 1 < pT < 5 GeV/c prefers a smaller value, which means a larger nuclear modification, in the Cu-going direction compared to the Au-going direction. Additionally, the nuclear-modification factor in Cu + Au collisions averaged over all centrality is measured to be similar to the previous PHENIX result in d + Au collisions for these rapidities.

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This is an article from Physical Review C 93 (2016): 024904, doi:10.1103/PhysRevC.93.024904. Posted with permission.

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