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Title: SU(5)×U(1)X grand unification with minimal seesaw and Z'-portal dark matter

Journal Article · · Physics Letters. B
 [1];  [2]; ORCiD logo [1]
  1. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
  2. Yamagata Univ. (Japan). Graduate School of Science and Engineering

We propose a grand unified SU (5)×U ( 1 ) X model, where the standard SU(5) grand unified theory is supplemented by minimal seesaw and a right-handed neutrino dark matter with an introduction of a global Z 2 -parity. In the presence of three right-handed neutrinos (RHNs), the model is free from all gauge and mixed-gravitational anomalies. The SU(5) symmetry is broken into the Standard Model (SM) gauge group at M GUT 4× 10 16 GeV in the standard manner, while the U(1)X symmetry breaking occurs at the TeV scale, which generates the TeV-scale mass of the U(1)X gauge boson ( Z ' boson) and the three Majorana RHNs. A unique Z 2 -odd RHN is stable and serves as the dark matter (DM) in the present Universe, while the remaining two RHNs work to generate the SM neutrino masses through the minimal seesaw. We investigate the Z ' -portal RHN DM scenario in this model context. We find that the constraints from the DM relic abundance, and the Z ' boson search at the Large Hadron Collider (LHC), and the perturbativity bound on the U(1)X gauge coupling are complementary to narrow down the allowed parameter region in the range of 3.0 m Z ' [TeV]9.2 for the Z ' boson mass. The allowed region for m Z ' 5TeV will be fully covered by the future LHC experiments. We also briefly discuss the successful implementation of Baryogenesis and cosmological inflation scenarios in the present model.

Research Organization:
Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE
Grant/Contract Number:
SC0012447
OSTI ID:
1426826
Alternate ID(s):
OSTI ID: 1499154
Journal Information:
Physics Letters. B, Vol. 780; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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Z ′ Portal Dark Matter in the Minimal B - L Model journal July 2018
Anomaly-free dark matter with harmless direct detection constraints journal December 2018
Natural Z ′ -portal Majorana dark matter in alternative U(1) extended standard model journal August 2019
Further study on the textures of neutrino mass matrix for maximal atmospherical mixing angle and Dirac C P phase journal April 2019
An anomaly-free atlas: charting the space of flavour-dependent gauged U(1) extensions of the Standard Model text January 2019
Further study on the textures of neutrino mass matrix for maximal atmospherical mixing angle and Dirac CP phase text January 2018
An Anomaly-free Atlas: charting the space of flavour-dependent gauged $U(1)$ extensions of the Standard Model text January 2018
Predictive Scotogenic Model with Flavor Dependent Symmetry text January 2019
UV completion of an axial, leptophobic, Z′ journal October 2020
Braneworld cosmological effect on freeze-in dark matter density and lifetime frontier journal July 2022
UV completion of an axial, leptophobic, $Z^\prime$ text January 2019
Light $Z^\prime$ and Dark Matter from U(1)$_X$ Gauge Symmetry text January 2020

Figures / Tables (3)