Zobrazeno 1 - 10
of 595
pro vyhledávání: '"Steinhauser Matthias"'
Autor:
Steinhauser, Matthias
Higgs boson pair production plays an important role in the determination of the Higgs boson self coupling. The predictions based on next-to-leading order corrections show a large dependence on the renormalization scheme of the top quark mass, which r
Externí odkaz:
http://arxiv.org/abs/2409.07573
Autor:
Steinhauser, Matthias
We discuss recent higher order calculations to properties of $B$ mesons. This includes next-to-next-to-leading order corrections to nonleptonic and next-to-next-to-next-to-leading order corrections to semileptonic $B$ meson decays. The latter is impo
Externí odkaz:
http://arxiv.org/abs/2409.07572
In these proceedings, we consider the factorizable contributions of the two-loop electroweak corrections to Higgs boson pair production at the Large Hadron Collider. We discuss the classification of factorizable diagrams and their renormalization. Co
Externí odkaz:
http://arxiv.org/abs/2407.05787
We compute next-to-next-to-leading order QCD corrections to the partonic processes $b\to c \bar{u} d$ and $b\to c \bar{c} s$, which constitute the dominant decay channels in standard model predictions for $B$-meson lifetimes within the heavy quark ex
Externí odkaz:
http://arxiv.org/abs/2406.19456
Autor:
Fael, Matteo, Huber, Tobias, Lange, Fabian, Müller, Jakob, Schönwald, Kay, Steinhauser, Matthias
Publikováno v:
Phys.Rev.D 110 (2024) 5, 056011
We compute three-loop corrections of $\mathcal{O}(\alpha_{s}^3)$ to form factors with one massive and one massless quark coupling to an external vector, axialvector, scalar, pseudoscalar, or tensor current. We obtain analytic results for the color-pl
Externí odkaz:
http://arxiv.org/abs/2406.08182
We compute three-loop corrections to the process $gg\to HH$ originating from one-particle reducible diagrams. This requires the computation of two-loop corrections to the gluon-gluon-Higgs vertex with an off-shell gluon. We describe in detail our app
Externí odkaz:
http://arxiv.org/abs/2405.20372
We provide details to several technical aspects which are important for the calculation of next-to-next-to-leading order corrections to the mixing of neutral $B$ mesons. This includes the computation of the master integrals for finite charm and botto
Externí odkaz:
http://arxiv.org/abs/2405.14698
Autor:
Gerlach, Marvin, Nierste, Ulrich, Reeck, Pascal, Shtabovenko, Vladyslav, Steinhauser, Matthias
This report summarises recent advances made in the calculation of the NNLO QCD corrections to the width difference $\Delta\Gamma_s$ in the $B_s-\overline{B}_s$ system. The inclusion of the effects due to current-current operators leads to an updated
Externí odkaz:
http://arxiv.org/abs/2403.08316
Publikováno v:
JHEP 11 (2023) 166
We compute three-loop vertex corrections to $b\to s\gamma$ induced by current-current operators. The results are presented as expansions in $m_c/m_b$ with numerical coefficients which allow to cover all relevant values for the heavy quark masses in d
Externí odkaz:
http://arxiv.org/abs/2309.14706
Autor:
Steinhauser, Matthias
We discuss recent (semi) analytic results for $2\to 2$ processes with massive internal and external particles in various regions of phase space. In the physical applications we restrict ourselves to $gg\to HH$.
Comment: Contribution to the Proce
Comment: Contribution to the Proce
Externí odkaz:
http://arxiv.org/abs/2309.14214