Zobrazeno 1 - 10
of 494
pro vyhledávání: '"Tsutomu T. Yanagida"'
Publikováno v:
Physics Letters B, Vol 854, Iss , Pp 138735- (2024)
It is known that two heavy Majorana right-handed neutrinos are sufficient to generate the baryon asymmetry in the present universe. Thus, it is interesting to identify the third right-handed neutrino N with the dark matter. We impose a new discrete s
Externí odkaz:
https://doaj.org/article/6828c5df76cd4174afc77df9e7a61b74
Autor:
Masahiro Kawasaki, Tsutomu T. Yanagida
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 11, Pp 1-10 (2023)
Abstract When we impose discrete symmetries in the standard model we have Dai-Freed global anomalies. However, interestingly if we introduce three right-handed neutrinos we can have an anomaly-free discrete Z 4 gauge symmetry. This Z 4 symmetry shoul
Externí odkaz:
https://doaj.org/article/0b067c03cbaf47ec81197381f7d0ed8f
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-28 (2023)
Abstract Supersymmetry is still a viable explanation for the muon g – 2 anomaly, if the sleptons and electroweak gauginos are O 100 $$ \mathcal{O}(100) $$ GeV. However, for supersymmetry breaking masses this light, the SUSY flavor and CP-problem ar
Externí odkaz:
https://doaj.org/article/fff6baf672ff4a0eaf3c53a9210eb07d
Autor:
Gongjun Choi, Tsutomu T. Yanagida
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 12, Pp 1-28 (2022)
Abstract In this work, we discuss how the use of the symmetries well motivated in physics beyond the Standard model (BSM) can guarantee the high quality axions. We avoid to introduce symmetries only useful for addressing the axion quality problem. Ra
Externí odkaz:
https://doaj.org/article/de8756d552b0475a9c4c132cee96c1a7
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-28 (2022)
Abstract It is remarkable that the matter fields in the Standard Model (SM) are apparently unified into the SU(5) representations. A straightforward explanation of this fact is to embed all the SM gauge groups into a simple group containing SU(5), i.
Externí odkaz:
https://doaj.org/article/9426ced89e144a889fcd46e63de947e6
Publikováno v:
Physics Letters B, Vol 833, Iss , Pp 137306- (2022)
It is known that the recently reported shift of the W boson mass can be easily explained by an SU(2)L triplet Higgs boson with a zero hypercharge if it obtains a vacuum expectation value (VEV) of O(1) GeV. Surprisingly, the addition of a TeV scale co
Externí odkaz:
https://doaj.org/article/d37272455b0f4f8ca58da400643ccfeb
Autor:
Jason L. Evans, Tsutomu T. Yanagida
Publikováno v:
Physics Letters B, Vol 833, Iss , Pp 137359- (2022)
In minimal supersymmetric SU(5) models, the proton can decay through dimension 5 operators. Since this decay depends directly on the supersymmetric soft masses, it will be constrained by other observables which depend on the soft masses, such as the
Externí odkaz:
https://doaj.org/article/40e74cba803e4b95a15dabb070818bcd
Publikováno v:
Physics Letters B, Vol 833, Iss , Pp 137386- (2022)
We consider a scenario where supersymmetry breaking, its mediation, and the cancellation of the theta parameter of SU(3)C are all caused by a single chiral multiplet. The string axion multiplet is a natural candidate of such a superfield. We show tha
Externí odkaz:
https://doaj.org/article/613419d5b68242af82e32159c2d264bd
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 5, Pp 1-17 (2021)
Abstract By extending a previously proposed conformal gauge mediation model, we construct a gauge-mediated SUSY breaking (GMSB) model where a SUSY-breaking scale, a messenger mass, the μ-parameter and the gravitino mass in a minimal supersymmetric (
Externí odkaz:
https://doaj.org/article/c0b1f760424a4224b4fabd805b575a4e
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 4, Pp 1-15 (2021)
Abstract A keV-scale gravitino arising from a minimal supersymmetric (SUSY) Standard Model (MSSM) is an interesting possibility since the small scale problems that the ΛCDM model encounters in the modern cosmology could be alleviated with the keV-sc
Externí odkaz:
https://doaj.org/article/835d9e69fb4c41dab701e698f63cfabe