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arXiv 1002.4043hep-ph
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CERN-LHC重离子碰撞中单衍射重夸克产生的估计

Estimate of the single diffractive heavy quark production in heavy ion collisions at the CERN-LHC

M. B. Gay Ducati, M. M. Machado, M. V. T. Machado

摘要:

计算了核-核碰撞中次非领先级(NLO)重夸克产生的单衍射截面。这样的过程预计将发生在LHC上。我们开始使用硬衍射因式分解形式主义,考虑到最近的实验参数化的坡密子结构函数(DPDF)。考虑能隙存活几率,吸收修正由多重Pomeron贡献来计算,并讨论了它在核碰撞中的理论不确定性。我们估计了LHC核相干/非相干碰撞中单次衍射过程的衍射比。

英文摘要:

The single diffractive cross section for heavy quarks production is calculated in next-no-leading order (NLO) in nucleus-nucleus collisions. Such processes are expected to occur at the LHC. We start using the hard diffractive factorization formalism, taking into account the recent experimental parameterization for the Pomeron Structure Function (DPDF). Absorptive corrections are accounted by the multiple Pomeron contributions considering a gap survival probability, where its theoretical uncertainty for nuclear collisions is discussed. We estimate the diffractive ratios for single diffraction process in nuclear coherent/incoherent collisions at the LHC.

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