Abstract

In this paper we conduct a phenomenological study for the search of evidence for the intrinsic charm mechanism in double \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) production at the COMPASS experiment using the CERN \({{\pi }^{ - }}\) beam at 190 GeV/c. Estimations on \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) pair cross-sections and kinematic distributions are given for different production mechanisms. We also re-review the double \({J \mathord{\left/ {\vphantom {J \psi }} \right. \kern-0em} \psi }\) production data provided by the NA3 experiment using the CERN \({{\pi }^{ - }}\) beam at 150 and 280 GeV/c with incident on a platinum target.

中文翻译：

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COMPASS实验中寻找内在魅力证据的现象学研究

摘要

在本文中，我们进行了现象学研究，以寻找双\（{J \ mathord {\ left / {\ vphantom {J \ psi}} \ right。\ kern-0em} \ psi的内在魅力机制的证据。使用190 GeV / c的CERN \（{{\ pi} ^ {-}} \）光束在COMPASS实验中进行\）生产。针对不同的生产机制，给出了\（{J \ mathord {\ left / {\ vphantom {J \ psi}} \ right。\ kern-0em} \ psi} \上的估计和运动学分布。我们还使用CERN重新审查了NA3实验提供的双\（{J \ mathord {\ left / {\ vphantom {J \ psi}} \ right。\ kern-0em} \ psi} \的生产数据。 （{{\ pi} ^ {-}} \）在150和280 GeV / c的光束 与白金目标有关的事件。