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arXiv 0708.4322hep-ph
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R(pA)的高能行为

On the behaviour of R(pA) at high energy

Misha Kozlov, Arif I. Shoshi, Bo-Wen Xiao

摘要:

我们讨论了在高能量和固定耦合下,核的未积分胶子分布与质子的未积分胶子分布之比(以A^{1/3}放大)R(pA)的行为。我们证明了R(pA)的胶子阴影随着速度的增加而增加,在渐近快度处接近1/A^{1/3},这意味着由于胶子数涨落或Pomeron环而产生的总胶子阴影。

英文摘要:

We discuss the behaviour of R(pA), the ratio of the unintegrated gluon distribution of a nucleus over the unintegrated gluon distribution of a proton scaled up by A^{1/3}, at high energy and fixed coupling. We show that R(pA) exhibits a rising gluon shadowing with growing rapidity, approaching 1/A^{1/3} at asymptotic rapidity, which means total gluon shadowing due to gluon number fluctuations or Pomeron loops.

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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