Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Passera, Massimo"'
We study the time-momentum representation of the kernel needed to compute hadronic vacuum polarization contributions to the muon $g$-$2$ in the space-like region at next-to-leading order. For small values of the time, we present analytical series exp
Externí odkaz:
http://arxiv.org/abs/2406.17940
The recent measurement of the muon $g$-2 at Fermilab confirms the previous Brookhaven result. The leading hadronic vacuum polarization (HVP) contribution to the muon $g$-2 represents a crucial ingredient to establish if the Standard Model prediction
Externí odkaz:
http://arxiv.org/abs/2112.08312
We present simple analytic expressions to compute the hadronic vacuum polarization contribution to the muon $g$-2 in the space-like region up to next-to-next-to-leading order. These results can be employed in lattice QCD calculations of this contribu
Externí odkaz:
http://arxiv.org/abs/2112.05704
Publikováno v:
Phys. Rev. D 102, 033002 (2020)
The discrepancy between the Standard Model theory and experimental measurement of the muon magnetic moment anomaly, $a_{\mu}=\left(g_{\mu}-2\right)/2$, is connected to precision electroweak (EW) predictions via their common dependence on hadronic vac
Externí odkaz:
http://arxiv.org/abs/2006.12666
Autor:
Fael, Matteo, Passera, Massimo
Publikováno v:
Phys. Rev. Lett. 122, 192001 (2019)
The Standard Model prediction for muon-electron scattering beyond leading order requires the inclusion of QCD contributions which cannot be computed perturbatively. At next-to- and next-to-next-to-leading order, they arise from one- and two-loop diag
Externí odkaz:
http://arxiv.org/abs/1901.03106
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:
D’Ambrosio Giancarlo, Iacovacci Michele, Passera Massimo, Venanzoni Graziano, Mastroianni Stefano
Publikováno v:
EPJ Web of Conferences, Vol 289, p 00001 (2023)
Externí odkaz:
https://doaj.org/article/4664788cd6b94256af0f7598fd0fad4a
We update the constraints on two-Higgs-doublet models (2HDMs) focusing on the parameter space relevant to explain the present muon $g$$-$$2$ anomaly, $\Delta a_{\mu}$, in four different types of models, type I, II, "lepton specific" (or X) and "flipp
Externí odkaz:
http://arxiv.org/abs/1409.3199
Autor:
Colangelo, Gilberto, Hoferichter, Martin, Nyffeler, Andreas, Passera, Massimo, Stoffer, Peter
Publikováno v:
Phys.Lett.B735:90-91,2014
Recently, it was shown that insertions of hadronic vacuum polarization at O(alpha^4) generate non-negligible effects in the calculation of the anomalous magnetic moment of the muon. This result raises the question if other hadronic diagrams at this o
Externí odkaz:
http://arxiv.org/abs/1403.7512
The tau anomalous magnetic moment (a_tau) and electric dipole moment (d_tau) have not yet been observed. The present bounds on their values are of order 10^-2 and 10^-17 e*cm, respectively. We propose to measure a_tau with a precision of O(10^-3) or
Externí odkaz:
http://arxiv.org/abs/1301.5302