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arXiv 1607.05095nucl-thhep-exhep-ph
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超周边重离子碰撞中两个正电子-电子对的双散射产生

Double scattering production of two positron-electron pairs in ultraperipheral heavy-ion collisions

Mariola Klusek-Gawenda, Antoni Szczurek

摘要:

我们提出了在LHC超周边重离子碰撞中两个正电子-电子对的电磁(双光子)双散射产生的第一个可测量的预测。可测量的截面与现实的削减电子/正电子(伪)的速度和横动量的ALICE和ATLAS或CMS实验。给出了总截面和微分截面的预测。我们还显示了二维分布的快度的相反符号(从相同或不同的子碰撞)和相同的符号($e^+ e^+$或$e^- e^-$)的电子和它们之间的快度距离。提出并讨论了预期的事件数量。我们的计算强烈表明,在不久的将来,在ATLAS,CMS和ALICE探测器的帮助下进行相关的测量是可能的。

英文摘要:

We present first measurable predictions for electromagnetic (two-photon) double scattering production of two positron-electron pairs in ultraperipheral heavy-ion collisions at LHC. Measureable cross sections are obtained with realistic cuts on electron/positron (pseudo)rapidities and transverse momenta for the ALICE and ATLAS or CMS experiments. The predictions for total and differential cross sections are presented. We show also two-dimensional distributions in rapidities of the opposite-sign (from the same or different subcollisions) and of the same-sign ($e^+ e^+$ or $e^- e^-$) electrons and in rapidity distance between them. Expected number of events are presented and discussed. Our calculations strongly suggest that relevant measurements with the help of ATLAS, CMS and ALICE detectors are possible in a near future.

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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