Two-Loop QCD Corrections to Wb(b)over-bar Production at Hadron Colliders

被引：48
|
作者：
Badger, Simon [1 ,2 ,3 ]
Hartanto, Heribertus Bayu [4 ]
Zoia, Simone [1 ,2 ,3 ]
机构：
[1] Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin, Italy
[2] Univ Torino, Arnold Regge Ctr, Via P Giuria 1, I-10125 Turin, Italy
[3] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy
[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源：
PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 01期
关键词：
ONE-LOOP AMPLITUDES; DIFFERENTIAL-EQUATIONS; RENORMALIZATION; INTEGRATION; PARTS;
D O I：
10.1103/PhysRevLett.127.012001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present an analytic computation of the two-loop QCD corrections to u (d) over bar -> W(+)b (b) over bar for an on-shell W boson using the leading color and massless bottom quark approximations. We perform an integration-by-parts reduction of the unpolarized squared matrix element using finite field reconstruction techniques and identify an independent basis of special functions that allows an analytic subtraction of the infrared and ultraviolet poles. This basis is valid for all planar topologies for five-particle scattering with an off-shell leg.
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页数：7
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