论文标题
独家夸克dijet横截面
Exclusive heavy quark dijet cross section
论文作者
论文摘要
我们使用软共线性有效理论研究了$ e^+e^ - $ - niHIhitation的独家夸克dijet横截面。为了重新恢复小型喷气源参数$β$和喷气半径$ r $的大型对数，我们将横截面分解为硬，柔软，柔软的，colinear和collinear-soft-soft零件。与无质夸克相比，可以修改带有共线和柔软零件的喷气部门，包括重夸克质量。通过匹配加强夸克有效理论，可以系统地实现喷气部门的分解。重夸克质量校正可大大增强横截面，当夸克质量与喷气尺寸$ e_jr $相媲美时，就无法忽略。我们还将独家重型夸克对生产分析为$ r $为零。使用重新介绍的结果，估计了对横截面的最高隔离效应。
We study the exclusive heavy quark dijet cross section from $e^+e^-$-annihilation using soft-collinear effective theory. In order to resum the large logarithms of small jet veto parameter $β$ and jet radius $R$, we factorize the cross section into the hard, hard-soft, collinear, and collinear-soft parts. Compared with the case of a massless quark, the jet sector with the collinear and collinear-soft parts can be modified to include the heavy quark mass. The factorization of the jet sector can be systematically achieved through matching onto the boosted heavy quark effective theory. Heavy quark mass corrections enhance the cross section sizably and cannot be ignored when the quark mass is comparable with the jet size $E_JR$. We also analyze the exclusive heavy quark pair production in the limit as $R$ goes to zero. Using the resummed result, the top isolation effects on the cross section are estimated.
