Zobrazeno 1 - 10
of 230
pro vyhledávání: '"Joshipura, A. S."'
Autor:
Joshipura, Anjan S., Patel, Ketan M.
Publikováno v:
JHEP 01 (2024) 135
We discuss a scenario in which the supergravity induced soft terms, conventionally used for breaking supersymmetry, also lead to non-zero Majorana neutrino masses. The soft terms lead to the spontaneous violation of the lepton number at the gravitino
Externí odkaz:
http://arxiv.org/abs/2310.17472
Autor:
Joshipura, Anjan S., Patel, Ketan M.
Publikováno v:
JHEP 09 (2021) 115
Possibility of a Right-Handed (RH) neutrino being a Goldstone fermion of a spontaneously broken global $U(1)$ symmetry in a supersymmetric theory is considered. This fermion obtains mass from the supergravity effects leading to a RH neutrino at the e
Externí odkaz:
http://arxiv.org/abs/2107.12802
Publikováno v:
Phys. Rev. D 103, 035008 (2021)
Cosmic inflation driven by the vacuum energy associated with the $D$-term of a supersymmetric abelian gauge group and a possible existence of long-range force mediated by an ultra-light gauge boson $Z^\prime$ are two extreme examples of models based
Externí odkaz:
http://arxiv.org/abs/2008.13334
Publikováno v:
JHEP 2003 (2020) 001
Extensions of the standard model with a $U(1)$ gauge symmetry contain gauge invariant kinetic mixing, $\sin\chi$, and gauge non-invariant mass mixing, $\delta M^2$, between the hypercharge and the new gauge boson $Z'$. These represent a priori incalc
Externí odkaz:
http://arxiv.org/abs/1909.02331
Autor:
Joshipura, Anjan S., Patel, Ketan M.
Publikováno v:
JHEP 07 (2018) 137
Discrete residual symmetries and flavour dependent CP symmetries consistent with them have been used to constrain neutrino mixing angles and CP violating phases. We discuss here role of such CP symmetries in obtaining a pseudo-Dirac neutrino which ca
Externí odkaz:
http://arxiv.org/abs/1805.02002
Publikováno v:
Phys. Rev. D 98, 075031 (2018)
We study origin, consequences and testability of a hypothesis of `partial $\mu$-$\tau$' reflection symmetry. This symmetry predicts $ |U_{\mu i}|=|U_{\tau i}|~(i=1,2,3) $ for a single column of the leptonic mixing matrix $U$. Depending on whether thi
Externí odkaz:
http://arxiv.org/abs/1804.02022
Autor:
Joshipura, Anjan S.
It is known that the imposition of a class of residual $Z_2\times Z_2$ symmetries on the neutrino mass matrix $M_\nu$ and a residual symmetry $Z_n$ ($n\geq 3$) on the Hermitian combination $M_lM_l^\dagger$ of the charged lepton mass matrix leads to a
Externí odkaz:
http://arxiv.org/abs/1801.02843
Autor:
Joshipura, Anjan S., Patel, Ketan M.
Publikováno v:
JHEP 01 (2017) 134
We study embedding of non-commuting $Z_2$ and $Z_m$, $m\geq 3$ symmetries in discrete subgroups (DSG) of $U(3)$ and analytically work out the mixing patterns implied by the assumption that $Z_2$ and $Z_m$ describe the residual symmetries of the neutr
Externí odkaz:
http://arxiv.org/abs/1610.07903
Autor:
Joshipura, Anjan S, Nath, Newton
Publikováno v:
Phys. Rev. D 94, 036008 (2016)
We discuss consequences of assuming that the (Majorana) neutrino mass matrix $M_\nu$ and the charged lepton mass matrix $M_l$ satisfy, $S_\nu^T M_\nu S_\nu=-M_\nu~,T_l^\dagger M_lM_l^\dagger T_l=M_lM_l^\dagger$ with respect to some discrete groups $S
Externí odkaz:
http://arxiv.org/abs/1606.01697
Autor:
Joshipura, Anjan S., Patel, Ketan M.
Publikováno v:
Phys.Lett. B749 (2015) 159-166
The generalized $\mu$-$\tau$ interchange symmetry in the leptonic mixing matrix $U$ corresponds to the relations: $|U_{\mu i}|=|U_{\tau i}|$ with $i=1,2,3$. It predicts maximal atmospheric mixing and maximal Dirac CP violation given $\theta_{13} \neq
Externí odkaz:
http://arxiv.org/abs/1507.01235