Journal ArticleDOI
Neutrino Masses and Mixings in Gauge Models with Spontaneous Parity Violation
Reads0
Chats0
TLDR
In this article, the neutrino's smallness of its mass can be explained as a result of the observed maximality of parity violation in low-energy weak interactions, independent of the number of generations and unaffected by renormalization effects.Abstract:
Unified electroweak gauge theories based on the gauge group $\mathrm{SU}{(2)}_{L}\ifmmode\times\else\texttimes\fi{}\mathrm{SU}{(2)}_{R}\ifmmode\times\else\texttimes\fi{}\mathrm{U}{(1)}_{B\ensuremath{-}L}$, in which the breakdown of parity invariance is spontaneous, lead most naturally to a massive neutrino. Assuming the neutrino to be a Majorana particle, we show that smallness of its mass can be understood as a result of the observed maximality of parity violation in low-energy weak interactions. This result is shown to be independent of the number of generations and unaffected by renormalization effects. Phenomenological consequences of this model at low energies are studied. Observation of neutrinoless double-$\ensuremath{\beta}$ decay will provide a crucial test of this class of models. Implications for rare decays such as $\ensuremath{\mu}\ensuremath{\rightarrow}e\ensuremath{\gamma}$, $\ensuremath{\mu}\ensuremath{\rightarrow}\mathrm{ee}\overline{e}$, etc. are also noted. It is pointed out that in the realm of neutral-current phenomena, departure from the predictions of the standard model for polarized-electron-hadron scattering, forward-backward asymmetry in ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$, and neutrino interactions has a universal character and may be therefore used as a test of the model.read more
Citations
More filters
Journal ArticleDOI
Oscillating neutrinos and μ→ e, γ
J.A. Casas,A. Ibarra,A. Ibarra +2 more
TL;DR: In this paper, it was shown that the prediction for BR(μ→e,γ) is in general larger than the experimental upper bound, especially if the largest Yakawa coupling is O (1) and the solar data are explained by a large angle MSW effect, which recent analyses suggest as the preferred scenario.
Journal ArticleDOI
Super Collider Physics
Journal ArticleDOI
A Lower bound on the right-handed neutrino mass from leptogenesis
Sacha Davidson,Alejandro Ibarra +1 more
TL;DR: In the see-saw model, the baryon asymmetry of the Universe can be generated by the decay of the lightest right-handed neutrino, νR as discussed by the authors.
Journal ArticleDOI
Neutrino Mass and Mixing with Discrete Symmetry
Stephen F. King,Christoph Luhn +1 more
TL;DR: This paper focuses on the PMNS mixing matrix and the latest global fits following the Daya Bay and RENO experiments which measure the reactor angle and gives a mini-review of finite group theory.
Journal ArticleDOI
A facility to search for hidden particles at the CERN SPS: the SHiP physics case.
Sergey Alekhin,Wolfgang Altmannshofer,Takehiko Asaka,Brian Batell,Fedor Bezrukov,Kyrylo Bondarenko,Alexey Boyarsky,Ki-Young Choi,Cristóbal Corral,Nathaniel Craig,David Curtin,Sacha Davidson,Sacha Davidson,André de Gouvêa,Stefano Dell'Oro,Patrick deNiverville,P. S. Bhupal Dev,Herbi K. Dreiner,Marco Drewes,Shintaro Eijima,Rouven Essig,Anthony Fradette,Björn Garbrecht,Belen Gavela,Gian F. Giudice,Mark D. Goodsell,Mark D. Goodsell,Dmitry Gorbunov,Stefania Gori,Christophe Grojean,Alberto Guffanti,Thomas Hambye,Steen Honoré Hansen,Juan Carlos Helo,Juan Carlos Helo,Pilar Hernández,Alejandro Ibarra,Artem Ivashko,Artem Ivashko,Eder Izaguirre,Joerg Jaeckel,Yu Seon Jeong,Felix Kahlhoefer,Yonatan Kahn,Andrey Katz,Andrey Katz,Andrey Katz,Choong Sun Kim,Sergey Kovalenko,Gordan Krnjaic,Valery E. Lyubovitskij,Valery E. Lyubovitskij,Valery E. Lyubovitskij,Simone Marcocci,Matthew McCullough,David McKeen,Guenakh Mitselmakher,Sven Moch,Rabindra N. Mohapatra,David E. Morrissey,Maksym Ovchynnikov,Emmanuel A. Paschos,Apostolos Pilaftsis,Maxim Pospelov,Maxim Pospelov,Mary Hall Reno,Andreas Ringwald,Adam Ritz,Leszek Roszkowski,Valery Rubakov,Oleg Ruchayskiy,Oleg Ruchayskiy,Ingo Schienbein,Daniel Schmeier,Kai Schmidt-Hoberg,Pedro Schwaller,Goran Senjanovic,Osamu Seto,Mikhail Shaposhnikov,Lesya Shchutska,J. Shelton,Robert Shrock,Brian Shuve,Michael Spannowsky,Andrew Spray,Florian Staub,Daniel Stolarski,Matt Strassler,Vladimir Tello,Francesco Tramontano,Anurag Tripathi,Sean Tulin,Francesco Vissani,Martin Wolfgang Winkler,Kathryn M. Zurek,Kathryn M. Zurek +95 more
TL;DR: It is demonstrated that the SHiP experiment has a unique potential to discover new physics and can directly probe a number of solutions of beyond the standard model puzzles, such as neutrino masses, baryon asymmetry of the Universe, dark matter, and inflation.