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arXiv 1204.6403hep-phnucl-th
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质子与轻核的碰撞为核子结构提供了新的线索

Collisions of protons with light nuclei shed new light on nucleon structure

Daniele Treleani, Giorgio Calucci

摘要:

在大型强子对撞机中,多部分子相互作用的高速率可以为研究强子的多部分子结构提供一个独特的机会。为此目的,质子与原子核的高能碰撞是特别合适的。多部分子相互作用的速率实际上既取决于部分子多重数,也取决于部分子在横向空间中的分布,这对pA碰撞截面产生不同的影响,作为原子质量数A的函数。相对于pp碰撞中多部分子相互作用的情况,改变原子质量数的可能性因此提供了区分不同贡献的额外处理。pD碰撞中部分子相互作用的一些相关特征已在前文中讨论过。在本文中,我们展示了如何的双重和三重关联项的多部分子结构的影响可以解开,通过比较多部分子相互作用的质子与D,氚和3He碰撞的速率。

英文摘要:

The high rates of multi-parton interactions at the LHC can provide a unique opportunity to study the multi-parton structure of the hadron. To this purpose high energy collisions of protons with nuclei are particularly suitable. The rates of multi-parton interactions depend in fact both on the partonic multiplicities and on the distributions of partons in transverse space, which produce different effects on the cross section in pA collisions, as a function of the atomic mass number A. Differently with respect to the case of multi-parton interactions in pp collisions, the possibility of changing the atomic mass number provides thus an additional handle to distinguish the diverse contributions. Some relevant features of double parton interactions in pD collisions have been discussed in a previous paper. In the present paper we show how the effects of double and triple correlation terms of the multi-parton structure can be disentangled, by comparing the rates of multiple parton interactions in collisions of protons with D, Tritium and 3He.

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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