arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1109.6876hep-phhep-ex
收藏

关于LHC上双轻子事件的共振搜索

On resonance search in dilepton events at the LHC

M. V. Chizhov, V. A. Bednyakov, J. A. Budagov

摘要:

碰撞搜索的主要分布是双轻子不变质量分布,并在赝快度差Δ_eta =| η_1-η_2|在两个轻子之间。来自标准模型Drell-Yan过程的背景主要贡献于中心赝快度区域Delta_eta = 0。相比之下,激发的玻色子导致在Delta_eta = 1.76处的峰值。我们表明,这个属性允许通过新的切割优化来增强其凸点搜索的意义。然而,为了确认凸块的观察结果并揭示共振性质,还应使用其他角分布。

英文摘要:

The main distribution for a bump search is the dilepton invariant mass distribution with appropriated cut on an absolute value of pseudorapidity difference Delta_eta = |eta_1 - eta_2| between the two leptons. The background from the Standard Model Drell-Yan process contributes mainly to the central pseudorapidity region Delta_eta = 0. By contrast, the excited bosons lead to a peak at Delta_eta = 1.76. We show that this property allows to enhance the significance of their bump search by means of new cut optimization. Nevertheless, in order to confirm an observation of the bump and reveal the resonance nature other angular distributions should be used in addition.

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。

↑