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arXiv 1502.01076hep-phastro-ph.HEhep-ex
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RHIC和LHC的微扰粲产生和瞬发大气中微子通量

Perturbative charm production and the prompt atmospheric neutrino flux in light of RHIC and LHC

Atri Bhattacharya, Rikard Enberg, Mary Hall Reno, Ina Sarcevic, Anna Stasto

摘要:

利用RHIC和大型强子对撞机上测得的粲散射截面来约束微扰QCD参数,如因子分解和重整化标度,以及现代部分子分布函数和最近对宇宙射线谱的估计,我们重新评估了大气中的瞬发中微子通量.我们发现,我们的结果提示中微子通量低于以前的微扰QCD估计,因此,改变了最近的冰立方测量在高能量的信号背景统计。

英文摘要:

We re-evaluate the prompt atmospheric neutrino flux, using the measured charm cross sections at RHIC and the Large Hadron Collider to constrain perturbative QCD parameters such as the factorization and renormalization scales, as well as modern parton distribution functions and recent estimates of the cosmic-ray spectra. We find that our result for the prompt neutrino flux is lower than previous perturbative QCD estimates and, consequently, alters the signal-to-background statistics of the recent IceCube measurements at high energies.

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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