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arXiv 1302.4743hep-phhep-ex
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喷注中通过质量模的次级重夸克产生

Secondary Heavy Quark Production in Jets through Mass Modes

Simon Gritschacher, Andre H. Hoang, Ilaria Jemos, Piotr Pietrulewicz

摘要:

以双喷极限下e+ e碰撞的推力分布为例,提出了一种确定喷流产生中二次质量夸克效应的有效场论方法。该方法是基于共线和软质量模式的场论处理,必须从与无质量夸克和胶子相关的共线和超软模式中分离出来。对于推力,概念设置的结构与大量规范玻色子的产生密切相关,并涉及四种不同的有效场论来描述所有可能的运动学情况。有效场论不断地相互融合,从而允许从无限重到任意小的质量的连续描述,保持通过因式分解处理的最奇异项的精确质量依赖性。本文提出的质量模场论方法与Aivazis,Collins,Olness和Tung最初提出的变费米子数方案是一致的,也可以应用于强子碰撞。

英文摘要:

We present an effective field theory method to determine secondary massive quark effects in jet production taking the thrust distribution for e+ e- collisions in the dijet limit as a concrete example. The method is based on the field theoretic treatment of collinear and soft mass modes which have to be separated coherently from the collinear and ultrasoft modes related to massless quarks and gluons. For thrust the structure of the conceptual setup is closely related to the production of massive gauge bosons and involves four different effective field theories to describe all possible kinematic situations. The effective field theories merge into each other continuously and thus allow for a continuous description from infinitely heavy to arbitrarily small masses keeping the exact mass dependence of the most singular terms treated through factorization. The mass mode field theory method we present here is in the spirit of the variable fermion number scheme originally proposed by Aivazis, Collins, Olness and Tung and can also be applied in hadron collisions.

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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