Impact of Glasma on heavy quark observables in nucleus-nucleus collisions at LHC
Impact of Glasma on heavy quark observables in nucleus-nucleus collisions at LHC
复制标题
格拉斯玛对大型强子对撞机核-核碰撞中重夸克可观测值的影响
DOI:
10.1016/j.physletb.2019.134933
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发表时间:
2019-02
影响因子:
4.4
通讯作者:
Santosh Kumar Das
中科院分区:
文献类型:
--
作者:
Yifeng Sun;Gabriele Coci;Santosh Kumar Das
In the pre-thermal equilibrium stage of relativistic heavy-ion collisions, a strong quasi-classical transverse gluon field emerges at about τ 0≃ 0.1 fm/c and evolves together with their longitudinal counterparts according to the classical Yang-Mills (CYM) equations. Recently it has been shown that these fields induce a diffusion of charm quarks in momentum space resulting in a tilt of their spectrum without a significant drag. We find that in nucleus-nucleus collisions at LHC such a novel dynamics of charm quarks leads to an initial enhancement of the nuclear modification factor (R A A) at p T larger than 2 GeV/c contrary to the standard lore. Moreover, the same dynamics leads to a larger final elliptic flow (v 2) inducing a relation between R A A and v 2 that is quite close to the experimental measurements. Our study also shows that such an initial pre-thermal stage is unlikely to be described in terms of a standard drag and diffusion dynamics, because even if one tune such coefficients to reproduce the same R A A (p T) this would imply a significantly smaller v 2.
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影响因子:
3.1
作者:
S. Plumari;G. Guardo;F. Scardina;V. Greco
通讯作者:
S. Plumari;G. Guardo;F. Scardina;V. Greco
DOI:
10.1016/j.nuclphysa.2017.06.044
发表时间:
2017-11
期刊:
Nuclear Physics
影响因子:
--
作者:
V. Greco
通讯作者:
V. Greco
影响因子:
5
作者:
M. Ruggieri;J.H. Liu;Oliva;G.X. Peng;V. Greco
通讯作者:
V. Greco
影响因子:
8.6
作者:
M. He;R. Fries;R. Rapp
通讯作者:
M. He;R. Fries;R. Rapp
DOI:
10.1140/epja/i2018-12478-5
发表时间:
2017-06
期刊:
The European Physical Journal A
影响因子:
--
作者:
S. Mrówczyński
通讯作者:
S. Mrówczyński