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arXiv 0811.0894hep-ex
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从HERA的双μ子事件测量美的产生

Measurement of beauty production from dimuon events at HERA

ZEUS Collaboration, S. Chekanov

摘要:

用HERA的ZEUS探测器测量了包含两个最终态μ子的事件中的美产生,其积分亮度为114 pb-1。用于μ子识别的低横向动量阈值,与ZEUS μ子系统的大快度覆盖相结合,可以访问几乎全部的相空间用于美容生产。在sqrt(s)= 318 GeV的ep碰撞中,美产生的总截面被测量为sigma_tot(ep -> bbbar X)= 13.9 +- 1.5(stat.)+4.0 -4.3(系统)NB.微分截面和测量的bbbar相关性也得到了,并与其他美容截面测量,蒙特卡罗模型和次到领先阶QCD预测。

英文摘要:

Beauty production in events containing two muons in the final state has been measured with the ZEUS detector at HERA using an integrated luminosity of 114 pb-1. A low transverse-momentum threshold for muon identification, in combination with the large rapidity coverage of the ZEUS muon system, gives access to almost the full phase space for beauty production. The total cross section for beauty production in ep collisions at sqrt(s)= 318 GeV has been measured to be sigma_tot(ep -> bbbar X) = 13.9 +- 1.5(stat.) +4.0 -4.3(syst.) nb. Differential cross sections and a measurement of bbbar correlations are also obtained, and compared to other beauty cross-section measurements, Monte Carlo models and next-to-leading-order QCD predictions.

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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