Non-factorisable contribution to t-channel single-top production

被引：5
|
作者：
Bronnum-Hansen, Christian [1 ]
Melnikov, Kirill [1 ]
Quarroz, Jeremie [1 ]
Signorile-Signorile, Chiara [1 ,2 ]
Wang, Chen-Yu [1 ]
机构：
[1] KIT, Inst Theoret Particle Phys, Wolfgang Gaede Str 1, Karlsruhe, Germany
[2] KIT, Inst Astroparticle Phys, Hermann von Helmholtz Pl 1, Karlsruhe, Germany
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2022年 / 2022卷 / 06期
关键词：
Higher-Order Perturbative Calculations; Top Quark; Scattering Amplitudes; QCD CORRECTIONS; PAIR PRODUCTION; CROSS-SECTION; QUARK; AMPLITUDES;
D O I：
10.1007/JHEP06(2022)061
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We compute the non-factorisable O(alpha(2)(s)) corrections to t-channel single-top quark production at the LHC. These peculiar corrections arise because of interactions between the heavy- and the light-quark lines and appear for the very first time at next-tonext-to-leading order in perturbative QCD. We find that the non-factorisable corrections change the single-top production cross section and the relevant kinematic distributions in this process by about half a percent.
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页数：29
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