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arXiv 0811.4619hep-ph
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色流喷注和具有喷注轴的次喷注中的包含强子分布

Inclusive hadronic distributions in jets and sub-jets with jet axis from color current

Redamy Perez Ramos

摘要:

在极限谱近似下(假设红外截止$Q_0 =\lqcd$),通过对喷流轴的精确定义,包括相对于修正的领先对数近似(MLLA)的相对大小${\cal O}(\sqrt{α_s})$的修正,确定了高能次喷流内部的强子$\kt$ -谱和胶子与夸克平均多重数比$r=N_g/N_q$.在极限谱近似下的$\kt$ -谱的结果在归一化后与CDF合作组的测量结果非常一致,并且该比值尚未测量。

英文摘要:

The hadronic $\kt$-spectrum and the gluon to quark average multiplicity ratio $r=N_g/N_q$ inside a high energy sub-jet are determined from a precise definition of the jet axis, including corrections of relative magnitude ${\cal O}(\sqrt{α_s})$ with respect to the Modified Leading Logarithmic Approximation (MLLA), in the limiting spectrum approximation (assuming an infrared cut-off $Q_0 =\lqcd$). The results for the $\kt$-spectrum in the limiting spectrum approximation are found to be, after normalization, in impressive agreement with measurements by the CDF collaboration and the ratio has not been measured yet.

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