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arXiv 0711.3069hep-ph
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在LEP2双光子相互作用中的美的产生:kt-因子分解与数据

Beauty production in two-photon interactions at LEP2: kt-factorization versus data

A. V. Lipatov, N. P. Zotov

摘要:

在kt-因子分解方法的框架下,研究了CERN LEP 2光子-光子碰撞中包含美夸克的产生。直接和解决光子的贡献都考虑在内。光子中未积分的胶子分布可以由完整的CCFM演化方程或Kimber-Martin-Ryskin公式得到。预测的美丽截面合理地同意最近的实验数据所采取的ALEPH合作。我们认为,高能重夸克产生中方位角关联的理论和实验研究可以作为非积分胶子密度的重要探测。

英文摘要:

Inclusive beauty quark production in photon-photon collisions at CERN LEP2 is considered in the framework of the kt-factorization approach. Both direct and resolved photon contributions are taken into account. The unintegrated gluon distributions in a photon are either obtained from the full CCFM evolution equation or from the Kimber-Martin-Ryskin prescription. The predicted beauty cross section reasonably agrees with the recent experimental data taken by the ALEPH collaboration. We argue that theoretical and experimental studies of the azimuthal correlations in heavy quark production at high energies can serve as a crucial probe of the unintegrated gluon densities.

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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