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arXiv 0812.2397hep-ph
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在LHC的多粒子产生中利用快度关联从隐藏扇区寻找(非)粒子的前景

Prospects of searching for (un)particles from Hidden Sectors using rapidity correlations in multiparticle production at the LHC

Miguel-Angel Sanchis-Lozano

摘要:

大多数新物理的签名已被研究的横向平面上的光束方向在LHC的背景大大减少。在本文中,我们提出了分析的包容性纵向(伪)快度相关的末态(带电)粒子,以寻找(非)粒子属于一个隐藏的部门以外的标准模型,使用选定的样本的p-p最小偏差事件(适用于适当的离线切割事件的基础上,例如,微型喷流、高多重性、事件形状变量、高pT轻子和光子等)。为此,我们研究包容性和半包容性的两粒子关联函数,向前向后的相关性,和阶乘的多重分布的时刻,不诉诸任何特定的模型,但在非常一般的(虽然简化)的假设。最后,在重离子碰撞中寻找夸克-胶子-等离子体的一些分析技术的启发下,我们利用Levy稳定律描述和Ginzburg-Landau相变模型,研究了这种中间(非)粒子填充对p-p碰撞中部分子级联(多重)分形的影响.从我们的初步研究结果似乎令人鼓舞的可能专门分析在大型强子对撞机和Tevatron实验。

英文摘要:

Most signatures of new physics have been studied on the transverse plane with respect to the beam direction at the LHC where background is much reduced. In this paper we propose the analysis of inclusive longitudinal (pseudo)rapidity correlations among final-state (charged) particles in order to search for (un)particles belonging to a Hidden Sector beyond the Standard Model, using a selected sample of p-p minimum bias events (applying appropriate off-line cuts on events based on, e.g., minijets, high-multiplicity, event shape variables, high-pT leptons and photons, etc) collected at the early running of the LHC. To this aim, we examine inclusive and semi-inclusive two-particle correlation functions, forward-backward correlations, and factorial moments of the multiplicity distribution, without resorting to any particular model but under very general (though simplifying) assumptions. Finally, motivated by some analysis techniques employed in the search for Quark-Gluon-Plasma in heavy-ion collisions, we investigate the impact of such intermediate (un)particle stuff on the (multi)fractality of parton cascades in p-p collisions, by means of a Levy stable law description and a Ginzburg-Landau model of phase transitions. Results from our preliminary study seem encouraging for possible dedicated analyses at the LHC and Tevatron experiments.

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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