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arXiv 1003.0346hep-phhep-ex
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在Tevatron上用准多Regge运动学产生包含b和b反b

Inclusive b and b anti-b production with quasi-multi-Regge kinematics at the Tevatron

B. A. Kniehl, V. A. Saleev, A. V. Shipilova

摘要:

基于高能t通道交换中胶子和夸克的Regge化假设,我们用准多Regge运动学方法研究了b喷注的强子产生。在费米实验室Tevatron的CDF协作所采取的包含b-jet和b anti-b-dijet生产的初步数据很好地描述了没有调整参数。我们发现对包含性b喷流产生的主要贡献是一个Reggeized胶子和一个Reggeized b夸克对一个b夸克的散射,这由有效Reggeon-Reggeon-夸克顶点描述。对b-反b-对产生的主要贡献来自于两个Reggeized胶子对一个b-反b-对的散射,它由有效Reggeon-Reggeon-quark-quark顶点描述。我们的分析是基于Kimber-Martin-Ryskin公式,以质子的Martin-Roberts-Stirling-Thorne共线部分子分布函数为输入,对未积分的胶子和夸克分布函数进行计算。

英文摘要:

We consider b-jet hadroproduction in the quasi-multi-Regge-kinematics approach based on the hypothesis of gluon and quark Reggeization in t-channel exchanges at high energies. The preliminary data on inclusive b-jet and b anti-b-dijet production taken by the CDF Collaboration at the Fermilab Tevatron are well described without adjusting parameters. We find the main contribution to inclusive b-jet production to be the scattering of a Reggeized gluon and a Reggeized b-quark to a b quark, which is described by the effective Reggeon-Reggeon-quark vertex. The main contribution to b anti-b-pair production arises from the scattering of two Reggeized gluons to a b anti-b pair, which is described by the effective Reggeon-Reggeon-quark-quark vertex. Our anaysis is based on the Kimber-Martin-Ryskin prescription for unintegrated gluon and quark distribution functions using as input the Martin-Roberts-Stirling-Thorne collinear parton distribution functions of the proton.

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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