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arXiv 1202.5864hep-ex
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用TeV实验研究在sqrt{s}=7时pp碰撞中J/Psi产生与带电粒子多重数的关系

J/Psi production as a function of charged particle multiplicity in pp collisions at sqrt{s}=7 TeV with the ALICE experiment

Sarah Porteboeuf-Houssais

摘要:

我们报告的第一个测量J/Psi生产作为一个函数的带电粒子赝快度密度dN_ch/d_eta在pp碰撞在sqrt{s} = 7 TeV的ALICE实验在LHC。J/Psi介子通过在中快度(|y| < 0.9)衰变为e+e对和在正快度(2.5<y<4)衰变为mu+mu对而被探测到p_T = 0。dN_ch/d_eta在|eta| < 1的范围内测量。我们比较了两个不同的J/Psi快度范围内的结果。初步的PYTHIA模拟。

英文摘要:

We report on the first measurement of J/Psi production as a function of charged particle pseudo-rapidity density dN_ch/d_eta in pp collisions at sqrt{s} = 7 TeV with the ALICE experiment at the LHC. J/Psi mesons are detected down to p_T = 0 via their decays into e+e- pairs at mid-rapidity (|y| < 0.9) and into mu+mu- pairs at forward rapidity (2.5<y<4). dN_ch/d_eta is measured within |eta| < 1. We compare results in the two different J/Psi rapidity ranges. Preliminary PYTHIA simulations are also presented.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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