QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations

被引：50
|
作者：
Badger, Simon [1 ]
Campbell, John M. [2 ]
Ellis, R. K. [2 ]
机构：
[1] Niels Bohr Inst, Niels Bohr Int Acad & Discovery Ctr, DK-2100 Copenhagen, Denmark
[2] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2011年 / 03期
基金：
美国能源部;
关键词：
NLO Computations; Hadronic Colliders; QCD; ONE-LOOP AMPLITUDES; GENERALIZED UNITARITY; MASSIVE PARTONS; YANG-MILLS; ANNIHILATION; FERMIONS;
D O I：
10.1007/JHEP03(2011)027
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 perform an analytic calculation of the one-loop amplitude for the W-boson mediated process 0 -> d (u) over barQ (Q) over bar(l) over barl retaining the mass for the quark Q. The momentum of each of the massive quarks is expressed as the sum of two massless momenta and the corresponding heavy quark spinor is expressed as a sum of two massless spinors. Using a special choice for the heavy quark spinors we obtain analytic expressions for the one-loop amplitudes which are amenable to fast numerical evaluation. The full next-to-leading order (NLO) calculation of hadron + hadron -> W(-> e nu)b (b) over bar with massive b-quarks is included in the program MCFM. A comparison is performed with previous published work.
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页数：40
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