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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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

Název v anglickém jazyce

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

Popis výsledku anglicky

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

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Physics Letters B

ISSN

0370-2693

e-ISSN

1873-2445

Svazek periodika

864

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

001452024300001

EID výsledku v databázi Scopus

2-s2.0-105000359043