在$\sqrtsnn = 2.76$ \TeV与LHC的ATLAS探测器的铅铅碰撞中通过半轻子衰变μ子的开放重味产生
Open heavy flavour production via semi-leptonic decay muons in lead lead collisions at $\sqrtsnn = 2.76$ \TeV with the ATLAS detector at the LHC
摘要：
超相对论核碰撞中重夸克的产生和抑制的测量探索了重夸克与碰撞中产生的热的稠密介质的相互作用。ATLAS测量了在$\sqrtsnn = 2.76$ \TeV \PbPb碰撞中通过开放重味强子到μ子的半轻子衰变产生重夸克。在$4 < \pT < 14$ \GeV的范围内，每个事件的μ子产量作为μ子横动量的函数，\pT的结果。μ子产额的中心依赖性的特征在于由“中心到外围”的比率，\Rcp。相对于外围碰撞，中心碰撞中μ子的产生被抑制了大约两倍。在实验误差范围内，所观察到的抑制是独立的μ子\pT的所有中心。
英文摘要：
Measurements of heavy quark production and suppression in ultra-relativistic nuclear collisions probe the interactions of heavy quarks with the hot, dense medium created in the collisions. ATLAS has measured heavy quark production in $\sqrtsnn = 2.76$ \TeV \PbPb collisions via semi-leptonic decays of open heavy flavour hadrons to muons. Results are presented for the per-event muon yield as a function of muon transverse momentum, \pT, over the range of $4 < \pT < 14$ \GeV. The centrality dependence of the muon yields is characterized by the "central to peripheral" ratio, \Rcp. Muon production is suppressed by approximately a factor of two in central collisions relative to peripheral collisions. Within the experimental errors, the observed suppression is independent of muon \pT for all centralities.
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