Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel

被引：17
|
作者：
Badger, Simon [1 ,2 ,3 ]
Chaubey, Ekta [1 ,2 ,3 ]
Hartanto, Heribertus Bayu [4 ]
Marzucca, Robin [5 ]
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] INFN, Sez Torino, Via P Giuria 1, I-10125 Turin, Italy
[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
[5] Univ Durham, Dept Phys, Inst Particle Phys Phenomenol, Durham DH1 3LE, England
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2021年 / 2021卷 / 06期
关键词：
Perturbative QCD; Scattering Amplitudes; DIFFERENTIAL-EQUATIONS; FEYNMAN-INTEGRALS; NUMERICAL EVALUATION; SINGULAR BEHAVIOR; CROSS-SECTION; FORM;
D O I：
10.1007/JHEP06(2021)163
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 present a complete set of analytic helicity amplitudes for top quark pair production via gluon fusion at two-loops in QCD. For the first time, we include corrections due to massive fermion loops which give rise to integrals over elliptic curves. We present the results of the missing master integrals needed to compute the amplitude and obtain an analytic form for the finite remainders in terms of iterated integrals using rationalised kinematics and finite field sampling. We also study the numerical evaluation of the iterated integrals.
引用
收藏
页数：38
相关论文
共 50 条
  • [1] Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel
    Simon Badger
    Ekta Chaubey
    Heribertus Bayu Hartanto
    Robin Marzucca
    Journal of High Energy Physics, 2021
  • [2] Top quark contribution to two-loop helicity amplitudes for Z boson pair production in gluon fusion
    Christian Brønnum-Hansen
    Chen-Yu Wang
    Journal of High Energy Physics, 2021
  • [3] Top quark contribution to two-loop helicity amplitudes for Z boson pair production in gluon fusion
    Bronnum-Hansen, Christian
    Wang, Chen-Yu
    JOURNAL OF HIGH ENERGY PHYSICS, 2021, 2021 (05)
  • [4] Two-loop leading-colour QCD helicity amplitudes for Higgs boson production in association with a bottom-quark pair at the LHC
    Simon Badger
    Heribertus Bayu Hartanto
    Jakub Kryś
    Simone Zoia
    Journal of High Energy Physics, 2021
  • [5] Two-loop leading-colour QCD helicity amplitudes for Higgs boson production in association with a bottom-quark pair at the LHC
    Badger, Simon
    Hartanto, Heribertus Bayu
    Krys, Jakub
    Zoia, Simone
    JOURNAL OF HIGH ENERGY PHYSICS, 2021, 2021 (11)
  • [6] Two-loop leading color corrections to heavy-quark pair production in the gluon fusion channel
    R. Bonciani
    A. Ferroglia
    T. Gehrmann
    A. von Manteuffel
    C. Studerus
    Journal of High Energy Physics, 2011
  • [7] Two-loop leading color corrections to heavy-quark pair production in the gluon fusion channel
    Bonciani, R.
    Ferroglia, A.
    Gehrmann, T.
    von Manteuffel, A.
    Studerus, C.
    JOURNAL OF HIGH ENERGY PHYSICS, 2011, (01):
  • [8] ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence
    Chen, Long
    Heinrich, Gudrun
    Jones, Stephen P.
    Kerner, Matthias
    Klappert, Jonas
    Schlenk, Johannes
    JOURNAL OF HIGH ENERGY PHYSICS, 2021, 2021 (03)
  • [9] ZH production in gluon fusion: two-loop amplitudes with full top quark mass dependence
    Long Chen
    Gudrun Heinrich
    Stephen P. Jones
    Matthias Kerner
    Jonas Klappert
    Johannes Schlenk
    Journal of High Energy Physics, 2021
  • [10] Two-loop leading colour helicity amplitudes for W±γ + j production at the LHC
    Simon Badger
    Heribertus Bayu Hartanto
    Jakub Kryś
    Simone Zoia
    Journal of High Energy Physics, 2022
12345