Gravitational waves from supercooled phase transitions in conformal Majoron models of neutrino mass

Gonçalves, João; Marfatia, Danny; Morais, António P.; Pasechnik, Roman

doi:10.1007/JHEP02(2025)110

Gravitational waves from supercooled phase transitions in conformal Majoron models of neutrino mass

Journal Article · Tue Feb 18 00:00:00 EST 2025 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP02(2025)110· OSTI ID:3008347

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Univ. of Aveiro (Portugal); Lund Univ. (Sweden); Univ. of Minho (Portugal)
Univ. of Hawaii at Manoa, Honolulu, HI (United States)
Univ. of Aveiro (Portugal); Univ. of Minho (Portugal)
Lund Univ. (Sweden)

We study supercooled first-order phase transitions above the QCD scale in a wide class of conformal Majoron-like U(1)′ models that explain the totality of active neutrino oscillation data and produce a detectable stochastic gravitational wave background (SGWB) at LIGO, LISA and ET. We place constraints on the U(1)′ breaking scale and gauge coupling using current LIGO-Virgo-Kagra data. We find that strong supercooling can be ruled out in large regions of parameter space if a SGWB is not detected by these experiments. A null signal at LIGO and ET will disfavor a type-I seesaw scale above 10¹⁴ GeV, while a positive signal is a signature of heavy right-handed neutrinos. On the other hand, LISA will be sensitive to seesaw scales as low as a TeV, and could detect a SGWB even if the right-handed neutrinos are decoupled.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Hawaii, Honolulu, HI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0010504

OSTI ID:: 3008347

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 2 Vol. 2025; ISSN 1029-8479

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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