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arXiv 0708.0769hep-phnucl-th
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π介子、K介子、质子和带电强子的碎裂函数

Fragmentation functions for pions, kaons, protons and charged hadrons

Daniel de Florian, Rodolfo Sassot, Marco Stratmann

摘要:

我们提出了一套新的π介子,K介子,质子和包容性的带电强子碎裂功能获得的非线性光学结合分析的单包容性的强子生产的电子正电子湮没,质子-质子碰撞,和深非弹性轻子-质子散射与任何粒子在最终状态。在与所有以前的拟合的差异,本分析考虑到不同的电荷的强子被确定的数据,这允许从反夸克碎裂功能的夸克歧视。

英文摘要:

We present new sets of pion, kaon, proton and inclusive charged hadron fragmentation functions obtained in NLO combined analyses of single-inclusive hadron production in electron-positron annihilation, proton-proton collisions, and deep-inelastic lepton-proton scattering with either particles identified in the final state. At variance with all previous fits, the present analyses take into account data where hadrons of different electrical charge are identified, which allow to discriminate quark from anti-quark fragmentation functions.

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