Magnitudes of Vxb CKM matrix elements

Ricciardi, Giulia

doi:10.22323/1.190.0040

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Cited by 2 publications

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“…The parameters |V xb | of the Cabibbo-Kobayashi-Maskawa (CKM) matrix play a central role in the analyses of the unitarity triangle and in testing the Standard Model (SM). The long-standing tension among their values, depending on whether they are extracted using exclusive or inclusive semi-leptonic B decays, also motivates more and more precise theoretical and experimental investigations 1 . We briefly discuss recent results on the exclusive determination of |V cb |, on the inclusive determination of |V ub |, and on R(D ( * ) ).…”

Section: Introductionmentioning

confidence: 99%

Selected updates on semileptonic $B$ decays and $|V_{xb}|$ determination

Ricciardi¹

2019

Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018)

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Section: Introductionmentioning

confidence: 99%

Selected updates on semileptonic $B$ decays and $|V_{xb}|$ determination

Ricciardi¹

2019

Proceedings of XIII Quark Confinement and the Hadron Spectrum — PoS(Confinement2018)

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Exotic see-saw mechanism for neutrinos and leptogenesis in a Pati-Salam model

Addazi

Bianchi

Ricciardi

2016

J. High Energ. Phys.

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We discuss non-perturbative corrections to the neutrino sector, in the context of a D-brane Pati-Salam-like model, that can be obtained as a simple alternative to SO(10) GUT's in theories with open and unoriented strings. In such D-brane models, exotic stringy instantons can correct the right-handed neutrino mass matrix in a calculable way, thus affecting mass hierarchies and modifying the see-saw mechanism to what we name exotic see-saw. For a wide range of parameters, a compact spectrum of right-handed neutrino masses can occur that gives rise to a predictive scenario for low energy observables. This model also provides a viable mechanism for Baryon Asymmetry in the Universe (BAU) through leptogenesis. Finally, a Majorana mass for the neutron is naturally predicted in the model, leading to potentially testable neutron-antineutron oscillations. Combined measurements in neutrino and neutron-antineutron sectors could provide precious informations on physics at the quantum gravity scale.

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Magnitudes of Vxb CKM matrix elements

Abstract: We review the current status of the absolute values of the CKM matrix elements V xb , with particular attention to latest determinations.

Cited by 2 publications

References 44 publications

Selected updates on semileptonic $B$ decays and $|V_{xb}|$ determination

Selected updates on semileptonic $B$ decays and $|V_{xb}|$ determination

Exotic see-saw mechanism for neutrinos and leptogenesis in a Pati-Salam model

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