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arXiv 1102.4282hep-ex
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sqrt(s)= 0.9和7时pp碰撞中奇异粒子的产生TeV

Strange Particle Production in pp Collisions at sqrt(s) = 0.9 and 7 TeV

The CMS Collaboration

摘要:

奇怪强子的光谱是在质子-质子碰撞中测量的,由CERN LHC的CMS实验记录,质心能量为0.9和7 TeV。K^0_s、λ和Xi^-粒子及其反粒子由它们的衰变拓扑结构重建而成,其产生率被测量为快度和横动量的函数。结果进行比较,其他实验和预测的PYTHIA Monte Carlo程序。横向动量分布被发现有很大的不同PYTHIA的结果和生产率超过预测的三个因素。

英文摘要:

The spectra of strange hadrons are measured in proton-proton collisions, recorded by the CMS experiment at the CERN LHC, at centre-of-mass energies of 0.9 and 7 TeV. The K^0_s, Lambda, and Xi^- particles and their antiparticles are reconstructed from their decay topologies and the production rates are measured as functions of rapidity and transverse momentum. The results are compared to other experiments and to predictions of the PYTHIA Monte Carlo program. The transverse momentum distributions are found to differ substantially from the PYTHIA results and the production rates exceed the predictions 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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