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Title: Master integrals for the NNLO virtual corrections to μe scattering in QED: The non-planar graphs

Journal Article · · Journal of High Energy Physics (Online)
ORCiD logo [1];  [2];  [2];  [3];  [4]
  1. INFN, Sezione di Milano, Milano (Italy)
  2. Univ. di Padova, Padova (Italy); INFN, Sezione di Padova, Padova (Italy)
  3. Univ. of Zurich, Zurich (Switzerland)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)

In this study, we evaluate the master integrals for the two-loop non-planar box-diagrams contributing to the elastic scattering of muons and electrons at next-to-next-to-leading order in QED. We adopt the method of differential equations and the Magnus exponential to determine a canonical set of integrals, finally expressed as a Taylor series around four space-time dimensions, with coefficients written as combination of generalized polylogarithms. The electron is treated as massless, while we retain full dependence on the muon mass. The considered integrals are also relevant for crossing-related processes, such as di-muon production at e+e colliders, as well as for the QCD corrections to top-pair production at hadron colliders. In particular our results, together with the planar master integrals recently computed, represent the complete set of functions needed for the evaluation of the photonic two-loop virtual next-to-next-to-leading order QED corrections to μe → μe and e+e → μ+μ.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC); Swiss National Science Foundation (SNSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1494707
Journal Information:
Journal of High Energy Physics (Online), Vol. 2018, Issue 9; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English

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Master integrals for the NNLO virtual corrections to $q \overline{q} \to t \overline{t}$ scattering in QCD: the non-planar graphs text January 2019
Master integrals for the NNLO virtual corrections to $$ q\overline{q}\to t\overline{t} $$ scattering in QCD: the non-planar graphs journal June 2019
Hadronic corrections to μ-e scattering at NNLO with space-like data journal February 2019
Explicit form of the R-ratio of electron-positron annihilation into hadrons text January 2019
Evaluating multi-loop Feynman integrals numerically through differential equations journal March 2019
Determining arbitrary Feynman integrals by vacuum integrals journal April 2019
Explicit form of the R- ratio of electron–positron annihilation into hadrons journal October 2019
Muon-Electron Scattering at Next-To-Next-To-Leading Order: The Hadronic Corrections journal May 2019
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Figures / Tables (4)