Zobrazeno 1 - 10
of 168
pro vyhledávání: '"Belfatto A."'
Autor:
Berezhiani, Zurab, Belfatto, Benedetta
The Standard Model does not constrain the form of the Yukawa matrices and thus the origin of fermion mass hierarchies and mixing pattern remains puzzling. On the other hand, there are intriguing relations between the quark masses and their weak mixin
Externí odkaz:
http://arxiv.org/abs/2405.07923
Autor:
Belfatto, Benedetta, Berezhiani, Zurab
The Standard Model does not constrain the form of the Yukawa matrices and thus the origin of fermion mass hierarchies and mixing pattern remains puzzling. On the other hand, there are intriguing relations between fermion masses and mixing angles whic
Externí odkaz:
http://arxiv.org/abs/2305.00069
The combination of precise determinations of $V_{us}$ and $V_{ud}$ hints towards a violation of the CKM first row unitarity at about $3\sigma$ level. Conversely, the recent measurement of the $W$-boson mass by the CDF Collaboration exhibits significa
Externí odkaz:
http://arxiv.org/abs/2302.14097
Autor:
Belfatto, Benedetta, Buttazzo, Dario, Gross, Christian, Panci, Paolo, Strumia, Alessandro, Vignaroli, Natascia, Vittorio, Ludovico, Watanabe, Ryoutaro
We explore a new mechanism for reproducing the Dark Matter (DM) abundance: scatterings of one DM particle on light Standard Model particles. Strong bounds on its decays can be satisfied if DM undergoes freeze-in and has a mass around or below the pio
Externí odkaz:
http://arxiv.org/abs/2111.14808
Autor:
Fischer, Oliver, Mellado, Bruce, Antusch, Stefan, Bagnaschi, Emanuele, Banerjee, Shankha, Beck, Geoff, Belfatto, Benedetta, Bellis, Matthew, Berezhiani, Zurab, Blanke, Monika, Capdevila, Bernat, Cheung, Kingman, Crivellin, Andreas, Desai, Nishita, Dev, Bhupal, Godbole, Rohini, Han, Tao, Harris, Philip, Hoferichter, Martin, Kirk, Matthew, Kulkarni, Suchita, Lange, Clemens, Lassila-Perini, Kati, Liu, Zhen, Mahmoudi, Farvah, Manzari, Claudio Andrea, Marzocca, David, Mukhopadhyaya, Biswarup, Pich, Antonio, Ruan, Yifeng, Schnell, Luc, Thaler, Jesse, Westhoff, Susanne
The field of particle physics is at the crossroads. The discovery of a Higgs-like boson completed the Standard Model (SM), but the lacking observation of convincing resonances Beyond the SM (BSM) offers no guidance for the future of particle physics.
Externí odkaz:
http://arxiv.org/abs/2109.06065
Autor:
Belfatto, Benedetta, Berezhiani, Zurab
Recent high precision determinations of $V_{us}$ and $V_{ud}$ indicate towards anomalies in the first row of the CKM matrix. Namely, determination of $V_{ud}$ from superallowed beta decays and of $V_{us}$ from kaon decays imply a violation of first r
Externí odkaz:
http://arxiv.org/abs/2103.05549
Autor:
Benedetta Belfatto, Zurab Berezhiani
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 8, Pp 1-34 (2023)
Abstract The Standard Model does not constrain the form of the Yukawa matrices and thus the origin of fermion mass hierarchies and mixing pattern remains puzzling. On the other hand, there are intriguing relations between fermion masses and mixing an
Externí odkaz:
https://doaj.org/article/24aeb4d19815414bb3d11abfa26f72c0
After the recent high precision determinations of $V_{us}$ and $V_{ud}$, the first row of the CKM matrix shows more than $4\sigma$ deviation from unitarity. Two possible scenarios beyond the Standard Model can be investigated in order to fill the gap
Externí odkaz:
http://arxiv.org/abs/1906.02714
Autor:
Berezhiani, Zurab, Belfatto, Benedetta
Spontaneous breaking of inter-family (horizontal) gauge symmetries can be at the origin of the mass hierarchy between the fermion families. The corresponding gauge bosons have flavor-nondiagonal couplings which generically induce the flavour changing
Externí odkaz:
http://arxiv.org/abs/1812.05414
Autor:
Oliver Fischer, Bruce Mellado, Stefan Antusch, Emanuele Bagnaschi, Shankha Banerjee, Geoff Beck, Benedetta Belfatto, Matthew Bellis, Zurab Berezhiani, Monika Blanke, Bernat Capdevila, Kingman Cheung, Andreas Crivellin, Nishita Desai, Bhupal Dev, Rohini Godbole, Tao Han, Philip Harris, Martin Hoferichter, Matthew Kirk, Suchita Kulkarni, Clemens Lange, Kati Lassila-Perini, Zhen Liu, Farvah Mahmoudi, Claudio Andrea Manzari, David Marzocca, Biswarup Mukhopadhyaya, Antonio Pich, Xifeng Ruan, Luc Schnell, Jesse Thaler, Susanne Westhoff
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 8, Pp 1-58 (2022)
Abstract The field of particle physics is at the crossroads. The discovery of a Higgs-like boson completed the Standard Model (SM), but the lacking observation of convincing resonances Beyond the SM (BSM) offers no guidance for the future of particle
Externí odkaz:
https://doaj.org/article/5ead345723664f89a0bdf6e852e5e24d