Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Matthias Steinhauser"'
Publikováno v:
Physics Letters B, Vol 845, Iss , Pp 138146- (2023)
We consider light-fermion three-loop corrections to gg→HH using forward scattering kinematics in the limit of a vanishing Higgs boson mass, which covers a large part of the physical phase space. We compute the form factors and discuss the technical
Externí odkaz:
https://doaj.org/article/6e56590b43944f2b9fca6747436374b1
Publikováno v:
Physics Letters B, Vol 770, Iss C, Pp 431-439 (2017)
One of the most important O(αs2) corrections to the B¯→Xsγ branching ratio originates from interference of contributions from the current–current and photonic dipole operators. Its value has been estimated using an interpolation in the charm q
Externí odkaz:
https://doaj.org/article/9eda1662f8964f0cbdc9444ab729c6de
Publikováno v:
Physics Letters B, Vol 751, Iss C, Pp 442-447 (2015)
We compute the decay rate of the Standard Model Higgs boson to bottom quarks to order ααs. We apply the optical theorem and calculate the imaginary part of three-loop corrections to the Higgs boson propagator using asymptotic expansions in appropri
Externí odkaz:
https://doaj.org/article/fdbefa3f35194f868f2ada7fa1753590
Autor:
Tao Liu, Matthias Steinhauser
Publikováno v:
Physics Letters B, Vol 746, Iss , Pp 330-334 (2015)
We compute the decoupling constant ζm relating light quark masses of effective nl-flavour QCD to (nl+1)-flavour QCD to four-loop order. Immediate applications are the evaluation of the MS¯ charm quark mass with five active flavours and the bottom q
Externí odkaz:
https://doaj.org/article/f73d5e4c203b46d0a670645b1be45f90
Publikováno v:
Physical Review
Physical Review D, 107 (9), Art.-Nr.: 094017
INSPIRE-HEP
Physical Review D, 107 (9), Art.-Nr.: 094017
INSPIRE-HEP
We compute three-loop corrections to the singlet form factors for massive quarks using a semi-analytic method which provides precise results over the whole kinematic range. Particular emphasis is put on the anomaly contribution originating from an ex
Publikováno v:
Physical Review Letters
Physical Review Letters, 128 (17), Art.-Nr. 172003
Physical Review Letters, 128 (17), Art.-Nr. 172003
We compute the three-loop non-singlet corrections to the photon-quark form factors taking into account the full dependence on the virtuality of the photon and the quark mass. We combine the method of differential equations in an effective way with ex
Publikováno v:
Physical Review
Physical Review D, 105 (11), Art.-Nr. 114007
Physical Review D, 105 (11), Art.-Nr. 114007
We compute the matching coefficients between QCD and non-relativistic QCD for external vector, axial-vector, scalar and pseudo-scalar currents up to three-loop order. We concentrate on the non-singlet contributions and present precise numerical resul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f40183489ed89a9f1b66df072f3eb5be
http://arxiv.org/abs/2203.11231
http://arxiv.org/abs/2203.11231
Publikováno v:
Physical Review D, 106 (3), Art.-Nr.: 034029
Physical Review
Physical Review
We consider Quantum Chromodynamics with external vector, axial-vector, scalar and pseudo-scalar currents and compute three-loop corrections to the corresponding vertex function taking into account massive quarks. We consider all non-singlet contribut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6163ffa640f67baeabf32893b951e72
https://publikationen.bibliothek.kit.edu/1000150651
https://publikationen.bibliothek.kit.edu/1000150651
Autor:
Long Chen, Joshua Davies, Gudrun Heinrich, Stephen P. Jones, Matthias Kerner, Go Mishima, Johannes Schlenk, Matthias Steinhauser
Publikováno v:
Journal of High Energy Physics, 2022 (8), Art.-Nr.: 56
Journal of High Energy Physics
Journal of High Energy Physics, 2022, Vol.2022(8), pp.56 [Peer Reviewed Journal]
Journal of High Energy Physics
Journal of High Energy Physics, 2022, Vol.2022(8), pp.56 [Peer Reviewed Journal]
We present fully differential next-to-leading order results for Higgs production in association with a $Z$ boson in gluon fusion. Our two-loop virtual contributions are evaluated numerically using sector decomposition, including full top-quark mass e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3148a832d200f5ff64f3100a8fb7ace
https://publikationen.bibliothek.kit.edu/1000149961
https://publikationen.bibliothek.kit.edu/1000149961
Autor:
Roman N. Lee, Andreas von Manteuffel, Robert M. Schabinger, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser
Publikováno v:
Physical Review Letters, 128 (21), Art.Nr. 212002
Physical Review Letters
Physical Review Letters
We compute the photon-quark and Higgs-gluon form factors to four-loop order within massless perturbative Quantum Chromodynamics. Our results constitute ready-to-use building blocks for N${}^4$LO cross sections for Drell-Yan processes and gluon-fusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::185d983267caf1db7bd296c59b4ec11d