Resonant leptogenesis in minimal U(1)X extensions of the Standard Model

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00384880" target="_blank" >RIV/68407700:21670/25:00384880 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.physletb.2025.139395" target="_blank" >https://doi.org/10.1016/j.physletb.2025.139395</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physletb.2025.139395" target="_blank" >10.1016/j.physletb.2025.139395</a>

Result language

angličtina

Original language name

Resonant leptogenesis in minimal U(1)X extensions of the Standard Model

Original language description

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' is evolved. The RHNs, charged under the 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' and BSM scalar-induced processes to reproduce the observed baryon asymmetry. Hence we estimate bounds on the U(1)X gauge coupling (gX) and the mass of the Z' (MZ) for different U(1)X charges and benchmark masses of the 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 a stronger limit on gX for MZ>5.8 TeV which could be probed by high energy scattering experiment in future

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physics Letters B

ISSN

0370-2693

e-ISSN

1873-2445

Volume of the periodical

864

Issue of the periodical within the volume

March

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

1-9

UT code for WoS article

001452024300001

EID of the result in the Scopus database

2-s2.0-105000359043