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arXiv 1107.0084hep-exnucl-ex
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来自LHC的ALICE实验的7次TeV pp碰撞中的K0s-K0s相关性

K0s-K0s correlations in 7 TeV pp collisions from the ALICE experiment at the LHC

T. J. Humanic

摘要:

在ALICE实验中,测量了7 TeV pp碰撞中完全相同的中性K介子对关联. K 0 s-K 0 s关联函数在3个多重性X 4 kT箱中形成。通过拟合(femtoscopy)X(PYTHIA)模型,从这些关联函数中提取飞秒K介子源参数Rinv和lambda,PYTHIA占PP碰撞中发现的非平坦基线。源参数是从一个适合,其中包括量子统计和最终状态的相互作用的a0/f0共振。K 0 s-K 0 s相关性表明,随着多重性仓的增加,Rinv系统性增加,随着kT仓的增加,Rinv系统性减少,如pp系统中的pi-pi相关性以及重离子碰撞中所见。此外,K 0 s-K 0 s相关性被观察到平滑地将pp系统的这种pi-pi Rinv行为扩展到比在pi-pi相关性中测量的kT范围高约三倍的kT。

英文摘要:

Identical neutral kaon pair correlations are measured in 7 TeV pp collisions in the ALICE experiment. K0s-K0s correlation functions are formed in 3 multiplicity X 4 kT bins. The femtoscopic kaon source parameters Rinv and lambda are extracted from these correlation functions by fitting a (femtoscopy) X (PYTHIA) model to them, PYTHIA accounting for the non-flat baseline found in pp collisions. Source parameters are obtained from a fit which includes quantum statistics and final-state interactions of the a0/f0 resonance. K0s-K0s correlations show a systematic increase in Rinv for increasing multiplicity bin and decreasing Rinv for increasing kT bin as seen in pi-pi correlations in the pp system, as well as seen in heavy-ion collisions. Also, K0s-K0s correlations are observed to smoothly extend this pi-pi Rinv behavior for the pp system up to about three times higher kT than the kT range measured in pi-pi correlations.

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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