Электронный каталог

Статья

Augier, C.
Searching for Beyond the Standard Model Physics Using the Improved Description of *1*0*0Mo 2*n*b*b Decay Spectral Shape with CUPID-Mo / C.Augier, S.Rozov, E.Yakushev, [a.o.] // The European Physical Journal C [Electronic resource]. – 2024. – Vol. 84, No. 9. – P. 925. – URL: https://doi.org/10.1140/epjc/s10052-024-13286-4. – Bibliogr.: 81.

The current experiments searching for neutrinoless double-β (0νββ) decay also collect large statistics of Standard Model allowed two-neutrino double-β (2νββ) decay events. These can be used to search for Beyond Standard Model (BSM) physics via 2νββ decay spectral distortions. *1*0*0Mo has a natural advantage due to its relatively short half-life, allowing higher 2νββ decay statistics at equal exposures compared to the other isotopes. We demonstrate the potential of the dual read-out bolometric technique exploiting a *1*0*0Mo exposure of 1.47 kg × years, acquired in the CUPID-Mo experiment at the Modane underground laboratory (France). We set limits on 0νββ decays with the emission of one or more Majorons, on 2νββ decay with Lorentz violation, and 2νββ decay with a sterile neutrino emission. In this analysis, we investigate the systematic uncertainty induced by modeling the 2νββ decay spectral shape parameterized through an improved model, an effect never considered before. This work motivates searches for BSM processes in the upcoming CUPID experiment, which will collect the largest amount of 2νββ decay events among the nextgeneration experiments.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 341.1б - Бета-распад и К-захват. Схемы распада и спектры