Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Primo, Amedeo"'
Autor:
Garani, Raghuveer, Gasparotto, Federico, Mastrolia, Pierpaolo, Munch, Henrik J., Palomares-Ruiz, Sergio, Primo, Amedeo
In leptophilic scenarios, dark matter interactions with nuclei, relevant for direct detection experiments and for the capture by celestial objects, could only occur via loop-induced processes. If the mediator is a scalar or pseudo-scalar particle, wh
Externí odkaz:
http://arxiv.org/abs/2105.12116
Autor:
Di Vita, Stefano, Gehrmann, Thomas, Laporta, Stefano, Mastrolia, Pierpaolo, Primo, Amedeo, Schubert, Ulrich
We complete the analytic evaluation of the master integrals for the two-loop non-planar box diagrams contributing to the top-pair production in the quark-initiated channel, at next-to-next-to-leading order in QCD. The integrals are determined from th
Externí odkaz:
http://arxiv.org/abs/1904.10964
Publikováno v:
Phys. Rev. D 99, 054013 (2019)
In this letter we present the results of the exact computation of contributions to the Higgs boson decay into bottom quarks that are proportional to the top Yukawa coupling. Our computation demonstrates that approximate results already available in t
Externí odkaz:
http://arxiv.org/abs/1812.07811
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
Externí odkaz:
http://arxiv.org/abs/1806.08241
We evaluate the master integrals for the two-loop, 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 ser
Externí odkaz:
http://arxiv.org/abs/1709.07435
Autor:
Primo, Amedeo, Tancredi, Lorenzo
We consider the calculation of the master integrals of the three-loop massive banana graph. In the case of equal internal masses, the graph is reduced to three master integrals which satisfy an irreducible system of three coupled linear differential
Externí odkaz:
http://arxiv.org/abs/1704.05465
We compute the two-loop master integrals required for the leading QCD corrections to the interaction vertex of a massive neutral boson $X^0$, e.g. $H,Z$ or $\gamma^{*}$, with a pair of $W$ bosons, mediated by a $SU(2)_L$ quark doublet composed of one
Externí odkaz:
http://arxiv.org/abs/1702.07331
Autor:
Primo, Amedeo, Tancredi, Lorenzo
The standard procedure for computing scalar multi-loop Feynman integrals consists in reducing them to a basis of so-called master integrals, derive differential equations in the external invariants satisfied by the latter and, finally, try to solve t
Externí odkaz:
http://arxiv.org/abs/1610.08397
We present a simplified variant of the integrand reduction algorithm for multiloop scattering amplitudes in $d = 4 - 2\epsilon$ dimensions, which exploits the decomposition of the integration momenta in parallel and orthogonal subspaces, $d=d_\parall
Externí odkaz:
http://arxiv.org/abs/1607.05156
We present the integrand decomposition of multiloop scattering amplitudes in parallel and orthogonal space-time dimensions, $d=d_\parallel+d_\perp$, being $d_\parallel$ the dimension of the parallel space spanned by the legs of the diagrams. When the
Externí odkaz:
http://arxiv.org/abs/1605.03157