Zobrazeno 1 - 10
of 45
pro vyhledávání: '"King, Simon J. D."'
We consider simultaneous explanations of the electron and muon $g-2$ anomalies through a single $Z'$ of a $U(1)'$ extension to the Standard Model (SM). We first perform a model-independent analysis of the viable flavour-dependent $Z'$ couplings to le
Externí odkaz:
http://arxiv.org/abs/2102.07781
Publikováno v:
JHEP 05 (2021) 144
Although the 125 GeV Higgs boson discovered at the LHC is often heralded as the origin of mass, it may not in fact be the origin of Yukawa couplings. In alternative models, Yukawa couplings may instead arise from a seesaw type mechanism involving the
Externí odkaz:
http://arxiv.org/abs/2102.06091
Autor:
King, Simon J. D., King, Stephen F.
Publikováno v:
JHEP 09 (2020) 043
We show how quark and lepton mass hierarchies can be reproduced in the framework of modular symmetry. The mechanism is analogous to the Froggatt-Nielsen (FN) mechanism, but without requiring any Abelian symmetry to be introduced, nor any Standard Mod
Externí odkaz:
http://arxiv.org/abs/2002.00969
We explore alternative descriptions of the charged lepton sector in modular invariant models of lepton masses and mixing angles. In addition to the modulus, the symmetry breaking sector of our models includes ordinary flavons. Neutrino mass terms dep
Externí odkaz:
http://arxiv.org/abs/1908.11867
In this proceedings, we discuss a light (17 MeV) $Z'$ solution to the anomaly observed in the decay of Beryllium-8 by the Atomki collaboration. We detail an anomaly free model with minimal particle content which can satisfy all other experimental con
Externí odkaz:
http://arxiv.org/abs/1905.05031
Publikováno v:
Phys. Rev. D 101, 115009 (2020)
We consider the possibility to explain the recent $R_K$ and $R_{K ^*}$ anomalies in a 2-Higgs Doublet Model, known as Aligned, combined with a low scale seesaw mechanism generating light neutrino masses and mixings. In this class of models, a large Y
Externí odkaz:
http://arxiv.org/abs/1903.11146
Publikováno v:
Front.in Phys. 7 (2019) 73
We consider several extensions of the Standard Model (SM) which can explain the anomalies observed by the Atomki collaboration in the decay of excited states of Beryllium via a new boson with a mass around 17 MeV yielding $e^+e^-$ pairs. We show how
Externí odkaz:
http://arxiv.org/abs/1812.05497
Publikováno v:
Phys. Rev. D 99, 055022 (2019)
In the context of a gauge invariant, non-anomalous and family-dependent (non-universal) $U(1)'$ extension of the Standard Model, wherein a new high scale mechanism generates masses and couplings for the first two fermion generations and the standard
Externí odkaz:
http://arxiv.org/abs/1811.07953
Autor:
Rose, Luigi Delle, Khalil, Shaaban, King, Simon J. D., Kulkarni, Suchita, Marzo, Carlo, Moretti, Stefano, Un, Cem S.
The $(B-L)$ Supersymmetric Standard Model (BLSSM) motivates several Dark Matter (DM) candidates beyond the Minimally Supersymmetric Standard Model (MSSM). We assess the comparative naturalness of the two models and discuss the potential detection pro
Externí odkaz:
http://arxiv.org/abs/1804.09470
Autor:
Rose, Luigi Delle, Khalil, Shaaban, King, Simon J. D., Kulkarni, Suchita, Marzo, Carlo, Moretti, Stefano, Un, Cem S.
The prevalent Dark Matter (DM) candidate of the (B-L) Supersymmetric Standard Model (BLSSM) is the Right Handed (RH) sneutrino. In this work we assess the ability of ground and space based experiments to establish the nature of this particle, through
Externí odkaz:
http://arxiv.org/abs/1804.07753