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arXiv 1202.2083hep-ex
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LHCf实验结果

Results from LHCf Experiment

Alessia Tricomi

摘要:

LHCf实验在2009年和2010年的LHC上以$\sqrt{s} = 0.9$ TeV和$\sqrt{s} = 7$ TeV的能量进行了p-p碰撞。在LHC质心系中测量能量为14 TeV的质子-质子碰撞产生的正向中性粒子能谱,对于标定高能宇宙线(HECR)领域中广泛使用的蒙特卡罗模型具有重要意义,其能量可达$10^{17}$ eV量级。本文报道了LHCf测量的包含光子谱的第一批结果。该光谱与模型预期的比较显示出显着的差异,主要是在高能量区域。此外,还将讨论未来分析的前景以及下一个数据采集期的计划,特别是在p-Pb碰撞中采集数据的可能性。

英文摘要:

The LHCf experiment has taken data in 2009 and 2010 p-p collisions at LHC at $\sqrt{s} = 0.9$ TeV and $\sqrt{s} = 7$ TeV. The measurement of the forward neutral particle spectra produced in proton-proton collisions at LHC up to an energy of 14 TeV in the center of mass system are of fundamental importance to calibrate the Monte Carlo models widely used in the high energy cosmic ray (HECR) field, up to an equivalent laboratory energy of the order of $10^{17}$ eV. In this paper the first results on the inclusive photon spectrum measured by LHCf is reported. Comparison of this spectrum with the model expectations show significant discrepancies, mainly in the high energy region. In addition, perspectives for future analyses as well as the program for the next data taking period, in particular the possibility to take data in p-Pb collisions, will be discussed.

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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