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arXiv 1906.01191hep-ph
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具有质量修正的旁观者模型中共线分解的检验

Testing collinear factorization in a spectator model with mass corrections

Juan V. Guerrero, Alberto Accardi

摘要:

在微扰QCD中,参与高能反应的强子的质量通常可以忽略。然而,在电子-质子碰撞在低(和不那么低)的光束能量的情况下,这可能不是一个很好的近似。特别是,最近的一项建议,包括强子质量的理论计算表明,这些强子质量修正(HMC)可以解释在HERMES和COMPASS实验进行的测量中观察到的巨大差异。在这次演讲中,我们提出了一个旁观者模型计算的初步结果,旨在测试所提出的因式分解方案中所需的近似的有效性范围。我们专注于包容性DIS散射的第一步,对半包容性过程中的HMCs的分析。

英文摘要:

In perturbative QCD, the masses of the hadrons involved in high energy reactions can usually be neglected. However, in the case of Kaon production in electron-proton collisions at low (and not so low) beam energies this may not be a good approximation. In particular, a recent proposal to include hadron masses in theoretical calculations shows how these Hadron Mass Corrections (HMCs) can explain a large discrepancy observed in measurements performed at the HERMES and COMPASS experiments. In this talk, we present preliminary results of a spectator model calculation designed to test the range of validity of the approximations needed in the proposed factorization scheme. We focus on inclusive DIS scattering as a first step towards the analysis of HMCs in semi-inclusive processes.

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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