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arXiv 1010.0195hep-ex
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LHC上非常向前粒子的LHCf测量

LHCf Measurements of Very Forward Particles at LHC

T. Sako

摘要:

大型强子对撞机正向实验(LHCf)是专门设计用于测量欧洲核子研究中心大型强子对撞机(LHC)上非常正向($η$ $>$ 8.4)产生的中性π介子和中子的截面。LHCf于2009年12月开始收集数据,当时LHC开始提供$\sqrt{s}$ = 900\,GeV的质子稳定碰撞。自2010年3月以来,LHC将碰撞能量提高到$\sqrt{s}$ = 7\,TeV。到研讨会召开时,LHCf收集了113 k个$\sqrt{s}$ = 900\,GeV的高能簇射(对应于$\sim$ 7 M非弹性碰撞)和$\sqrt{s}$ = 7\,TeV的$\sim$ 100 M簇射($\sim$ 14 nb $^{-1}$的积分亮度)。第一个有限的数据样本的分析结果表明,LHCf将提供关键的数据,以改善相互作用模型,以了解非常高的能量宇宙射线的空气簇射。

英文摘要:

The LHC forward experiment (LHCf) is specifically designed for measurements of the very forward ($η$$>$8.4) production cross sections of neutral pions and neutrons at Large Hadron Collider (LHC) at CERN. LHCf started data taking in December 2009, when the LHC started to provide stable collisions of protons at $\sqrt{s}$=900\,GeV. Since March 2010, LHC increased the collision energy up to $\sqrt{s}$=7\,TeV. By the time of the symposium, LHCf collected 113k events of high energy showers (corresponding to $\sim$7M inelastic collisions) at $\sqrt{s}$=900\,GeV and $\sim$100M showers ($\sim$14 nb$^{-1}$ of integrated luminosity) at $\sqrt{s}$=7\,TeV. Analysis results with the first limited sample of data demonstrate that LHCf will provide crucial data to improve the interaction models to understand very high-energy cosmic-ray air showers.

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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