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arXiv 1012.1605hep-ex
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CMS强子产生的测量

Measurements of Hadron Production at CMS

Keith A. Ulmer

摘要:

本文报道用CMS探测器在sqrt(s)= 0.9,2.36和7 TeV的pp碰撞中测量强子产生的结果。给出了带电强子的横动量、赝快度和多重数分布。对于非单衍射碰撞,平均带电强子横动量和赝快度密度揭示了理论和模型不能很好地匹配的生产率的增加。测量光谱的确定奇异粒子,K 0 S,λ,反λ,Xi-和Xi+,重建的基础上,他们的衰变拓扑结构,也提出了。观察到奇异粒子的产生率超过蒙特卡罗模型预测的三倍。

英文摘要:

Measurements of hadron production in pp collisions at sqrt(s) = 0.9, 2.36 and 7 TeV recorded with the CMS detector are reported. Transverse momentum, pseudorapidity and multiplicity distributions of charged hadrons are presented. For non-single-diffractive collisions, the average charged-hadron transverse momentum and pseudorapidity density reveal an increase in production rate not well matched by theory and models. Measured spectra of identified strange particles, K0S, Lambda, anti-Lambda, Xi- and Xi+, reconstructed based on their decay topology, are also presented. The production rates for strange particles are observed to be in excess of those predicted by Monte Carlo models by up to a factor of three.

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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