Monday, June 24, 2013

1306.5032 (Baoyi Chen et al.)

ψ^\prime Production and B Decay in Heavy Ion Collisions at LHC    [PDF]

Baoyi Chen, Yunpeng Liu, Kai Zhou, Pengfei Zhuang
In comparison with J/\psi, the excited charmonium state \psi^\prime is loosely bounded and its yield is dominantly from the B-hadron decay. Based on the transport approach, we study the double ratio of N(\psi^\prime)/N(J/\psi) from A+A collisions to that from p+p collisions at LHC energy. We found that the primordial production in the initial stage and the regeneration in the hot medium are not significant for \psi^\prime production in heavy ion collisions at LHC and the double ratio in semi-central and central collisions is controlled by the B decay.
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