Resonant leptogenesis in minimal $U(1{)}_X$ extensions of the Standard Model

Abstract

We investigate a general $U(1{)}_X$ scenario where we introduce three generations of Standard Model (SM) singlet Right Handed Neutrinos (RHNs) to generate the light neutrino mass through the seesaw mechanism after the breaking of $U(1{)}_X$ and electroweak symmetries. In addition to that, a general $U(1{)}_X$ scenario involves an SM-singlet scalar field and due to the $U(1{)}_X$ symmetry breaking the mass of a neutral beyond the SM (BSM) gauge boson $Z^{\prime }$ is evolved. The RHNs, being charged under $U(1{)}_X$ scenario, can explain the origin of observed baryon asymmetry through the resonant leptogenesis process. Applying observed neutrino oscillation data we study $Z^{\prime }$ and BSM scalar induced processes to reproduce the observed baryon asymmetry. Hence we estimate bounds on the $U(1{)}_X$ gauge coupling $(g_X)$ and the mass of the $Z^{\prime }$ $(M_{Z^{\prime }})$ for different $U(1{)}_X$ charges and benchmark masses of RHN and SM-singlet scalar. Finally we compare our results with limits obtained from the existing limits from LEP-II and LHC. We find that depending on the $U(1{)}_X$ charges, the masses of RHNs and SM-singlet scalar resonant leptogenesis could provide stronger limit on $g_X$ for $M_{Z^{\prime }}>5.8$ TeV which could be probed by high energy scattering experiment in future.

arXiv comment13 pages, two figures

References in corpus (21)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Oscillating neutrinos and mu --> e, gamma
• Resonant Leptogenesis
• Progress in Electroweak Baryogenesis
• Leptogenesis for Pedestrians
• Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP
• CP Violation and Baryogenesis due to Heavy Majorana Neutrinos
• Electroweak Baryogenesis
• Z-prime Gauge Bosons at the Tevatron
• Cosmic Microwave Background, Matter-Antimatter Asymmetry and Neutrino Masses
• Search for high-mass dilepton resonances using 139 fb${}^{-1}$ of $pp$ collision data collected at $\sqrt{s}=$13 TeV with the ATLAS detector
• Classically conformal U(1)${}^{\prime }$ extended Standard Model and Higgs vacuum stability
• Classically conformal U(1)' extended standard model, electroweak vacuum stability, and LHC Run-2 bounds
• Baryon and lepton number violation rates across the electroweak crossover
• CP Violation and Baryogenesis at the Electroweak Phase Transition
• Resonant Leptogenesis in the Minimal B-L Extended Standard Model at TeV
• Probing Resonant Leptogenesis at the LHC
• Heavy Majorana neutrino pair production from $Z^{\prime }$ at hadron and lepton colliders

Cited by in corpus (3)

• Probing low scale leptogenesis through gravitational wave
• Reviving $Z^{\prime }$ Portal Dark Matter with Conversion Mechanism
• Freeze-In Dark Matter and Leptogenesis: a ${\psi }^{\prime }$SM route