50 citations · 345 across the 26 of their papers we have counts for
17 papers · 1 filter
Electric Dipole Moments as indirect probes of Dark Sectors
Marco Ardu, Moinul Hossain Rahat, Nicola Valori +1
Dark sectors provide beyond Standard Model scenarios which can address unresolved puzzles, such as the observed dark matter abundance or the baryon asymmetry of the Universe. A nat…
Type-I two-Higgs-doublet model and gravitational waves from domain walls bounded by strings
Bowen Fu, Anish Ghoshal, Stephen F. King +1
The spontaneous breaking of a symmetry via an intermediate discrete symmetry may yield a hybrid topological defect of \emph{domain walls bounded by cosmic strings}. The deca…
Flavon vacuum alignment beyond SUSY
Claudia Hagedorn, M. L. López-Ibáñez, M. Jay Pérez +2
In flavor models the vacuum alignment of flavons is typically achieved via the -terms of certain fields in the supersymmetric limit. We propose a method for preserving such alig…
Primordial non-Gaussianity as a probe of seesaw and leptogenesis
Chee Sheng Fong, Anish Ghoshal, Abhishek Naskar +2
We present the possibility that the seesaw mechanism and nonthermal leptogenesis can be {investigated} via primordial non-Gaussianities in the context of a majoron curvaton model.…
The split majoron model confronts the NANOGrav signal and cosmological tensions
Pasquale Di Bari, Moinul Hossain Rahat
In the light of the evidence of a gravitational wave background from the NANOGrav 15yr data set, we reconsider the split majoron model as a new physics extension of the standard mo…
NANOGrav signal from axion inflation
Xuce Niu, Moinul Hossain Rahat
Several pulsar timing arrays including NANOGrav, EPTA, PPTA, and CPTA have recently reported the observation of a stochastic background of gravitational wave spectrum in the nano-H…
Towards distinguishing Dirac from Majorana neutrino mass with gravitational waves
Stephen F. King, Danny Marfatia, Moinul Hossain Rahat
We propose a new method towards distinguishing the Dirac versus Majorana nature of neutrino masses from the spectrum of gravitational waves (GWs) associated with neutrino mass gene…
Gravitational waves from phase transitions and cosmic strings in neutrino mass models with multiple majorons
Pasquale Di Bari, Stephen F. King, Moinul Hossain Rahat
We explore the origin of Majorana masses within the majoron model and how this can lead to the generation of a distinguishable primordial stochastic background of gravitational wav…
Parity-Odd and Even Trispectrum from Axion Inflation
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan +1
The four-point correlation function of primordial scalar perturbations has parity-even and parity-odd contributions and the parity-odd signal in cosmological observations is openin…
Gravitational Wave Probes of Massive Gauge Bosons at the Cosmological Collider
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan +1
We extend the reach of the ``cosmological collider'' for massive gauge boson production during inflation from the CMB scales to the interferometer scales. Considering a Chern-Simon…
BBN Photodisintegration Constraints on Gravitationally Produced Vector Bosons
Chee Sheng Fong, Moinul Hossain Rahat, Shaikh Saad
Gravitational production of massive particles due to cosmic expansion can be significant during the inflationary and reheating period of the Universe. If the particle also has non-…
Constraining Low-Scale Flavor Models with and Lepton Flavor Violation
M. L. López-Ibáñez, Aurora Melis, M. Jay Pérez +2
We present here two concrete examples of models where a sub-TeV scale breaking of their respective and flavor symmetries is able to account for the recentl…
Low-scale Resonant Leptogenesis in GUT with Family Symmetry
Chee Sheng Fong, Moinul Hossain Rahat, Shaikh Saad
We investigate low-scale resonant leptogenesis in an model where a single high energy phase in the complex Tribimaximal seesaw mixing produces the y…
Leptogenesis from the Asymmetric Texture
Moinul Hossain Rahat
We investigate non-resonant thermal leptogenesis in the context of the "asymmetric texture", where both Dirac and Majorana violation arise fr…
Tribimaximal Mixing in the Texture
M. Jay Pérez, Moinul Hossain Rahat, Pierre Ramond +2
We extend the recently proposed model for the asymmetric texture to the up-type quark and seesaw sectors. The hierarchical up-type quark masses are…
Stitching an Asymmetric Texture with Family Symmetry
M. Jay Pérez, Moinul Hossain Rahat, Pierre Ramond +2
We propose as the underlying non-Abelian discrete family symmetry of the asymmetric texture presented in arXiv:1805.1068…
An Asymmetric TBM Texture
Moinul Hossain Rahat, Pierre Ramond, Bin Xu
We construct a texture where the Seesaw matrix is diagonalized by the TriBiMaximal (TBM) matrix with a phase. All CKM and PMNS angles are within their pdg values, and the mass rela…