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北美退伍军人节(Veterans Day),12 日无更新
arXiv 1306.6827hep-ph
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夸克-反夸克对的衍射产生

Diffractive production of quark-antiquark pairs

Antoni Szczurek, Marta Luszczak, Wolfgang Schafer

摘要:

我们讨论了胶子衍射离解成重夸克对的问题。这种特殊的机制类似于虚光子衍射分解成夸克。$g p \to Q \bar Q p$的振幅是在碰撞参量和动量空间中导出的。单衍射$p p \to Q \bar Q p X$的截面计算为质子中的基本截面和胶子分布的卷积。计算了不同胶子非积分分布下LHC名义能量下粲夸克、底夸克和反夸克等的积分截面和微分横动量和快度分布。底部的魅力截面的比例示出和讨论作为几个运动学变量的函数。

英文摘要:

We discuss diffractive dissociation of gluons into heavy quark pairs. The particular mechanism is similar to the diffractive dissociation of virtual photons into quarks. The amplitude for the $g p \to Q \bar Q p$ is derived in the impact parameter and momentum space. The cross section for single diffractive $p p \to Q \bar Q p X$ is calculated as a convolution of the elementary cross section and gluon distribution in the proton. Integrated cross section and differential distributions in transverse momentum and rapidity of the charm and bottom quark and antiquark, etc. are calculated for the nominal LHC energy for different unintegrated gluon distributions from the literature. The ratio of the bottom-to-charm cross sections are shown and discussed as a function of several kinematical variables.

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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