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arXiv 1104.3568hep-exhep-ph
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在LHC独家生产$π^+π^-$,带正向质子标记

Exclusive $π^+π^-$ Production at the LHC with Forward Proton Tagging

R. Staszewski, P. Lebiedowicz, M. Trzebinski, J. Chwastowski, A. Szczurek

摘要:

本文提出了质子-质子碰撞中中心排他产生$π^+π^-$的过程及其理论描述。本文研究了在低光度LHC运行期间,利用ATLAS中心π介子探测器和ALFA散射质子示踪站测量π介子的可能性。对$\sqrt{s}=7$ TeV的可见截面估计为21 $μ$ b,这给出了100个积分亮度的$μ$ b $^{-1}$的2000多个事件。给出了π介子赝势、π介子和质子横动量以及$π^+π^-$不变质量的微分分布,并进行了讨论。

英文摘要:

A process of Central Exclusive $π^+π^-$ production in proton-proton collisions and its theoretical description is presented. A possibility of its measurement, during the special low luminosity LHC runs, with the help of the ATLAS central detector for measuring pions and the ALFA stations for tagging the scattered protons is studied. A visible cross section is estimated to be 21 $μ$b for $\sqrt{s}=7$ TeV, which gives over 2000 events for 100 $μ$b$^{-1}$ of integrated luminosity. Differential distributions in pion pseudorapidities, pion and proton transverse momenta as well as $π^+π^-$ invariant mass are shown and 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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