Gluino Pair Production at the LHC: The Threshold
Gluino Pair Production at the LHC: The Threshold
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大型强子对撞机的谷子对生产：阈值
DOI：
10.1016/j.nuclphysb.2011.11.024
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
M. Steinhauser
中科院分区：
文献类型：
--
作者：
Matthias R. Kauth;J. Kuhn;P. Marquard;M. Steinhauser
提出了接近阈值的强子谷子对产生横截面的次领先顺序分析。在非相对论性 QCD 框架内，观察到与固定阶微扰理论相比的显着增强，这源于低于标称对阈值的 1S 峰值的特征残余。此增强功能与顶级生产的相应增强功能类似。然而，由于 QCD 势的颜色系数较大，效果显着增强。该分析包括 S 波谷子对的所有颜色配置，即单重态、对称和反对称八重态、十重态和二十七表示法。对于所有颜色和自旋配置以及初始状态，分别评估涉及真实和虚拟辐射的匹配系数。我们专注于与谷氨结合能相当的谷氨衰变率的情况。胶子对的非相对论动力学通过计算 NLO 中的格林函数来求解。针对各种特征场景，给出了大型强子对撞机在 s=14 TeV 和 7 TeV 时的数值结果。
The next-to-leading order analysis of the cross section of hadronic gluino pair production close to threshold is presented. Within the framework of non-relativistic QCD a significant enhancement compared to fixed order perturbation theory is observed which originates from the characteristic remnant of the 1S peak below the nominal pair threshold. This enhancement is similar to the corresponding one for top production. However, as a consequence of the larger color factor of the QCD potential the effect is significantly enhanced. The analysis includes all color configurations of S-wave gluino pairs, i.e. singlet, symmetric and antisymmetric octet, decuplet and twenty-seven representation. Matching coefficients involving real and virtual radiation are separately evaluated for all color and spin configurations and initial states. We concentrate on the case of gluino decay rates comparable to the gluino binding energy. The non-relativistic dynamics of the gluino pair is solved by calculating the Greenʼs function in NLO. Numerical results for the Large Hadron Collider at s=14 TeV and 7 TeV are presented for various characteristic scenarios.
影响因子：
5.4
作者：
W. Beenakker;Silja Brensing;Michael Krämer;A. Kulesza;E. Laenen;I. Niessen
通讯作者：
W. Beenakker;Silja Brensing;Michael Krämer;A. Kulesza;E. Laenen;I. Niessen