Precise measurement of $2\nu\beta\beta$ decay of $^{100}$Mo with the CUPID-Mo detection technology

6533b853fe1ef96bd12ac37d

RESEARCH PRODUCT

Precise measurement of $2\nu\beta\beta$ decay of $^{100}$Mo with the CUPID-Mo detection technology

Matthias Kleifges S. Marnieros A. S. Barabash J. Kotila Ezio Previtali Ezio Previtali E. Guerard B. Welliver Lindley Winslow P. De Marcillac Claudia Tomei A. S. Zolotarova L. Marini R. G. Huang O. G. Polischuk D. Misiak Th. Redon J. Billard L. Cardani Stefano Pirro Federico Ferri Yao Shen J. Johnston M. Pavan M. Pavan P. Camus V. Novati B. K. Fujikawa M. De Combarieu L. Pattavina Alain Benoit B. Siebenborn Yu. A. Borovlev F. Charlieux H. Z. Huang S. V. Rozov B. Paul E. Armengaud E. P. Makarov L. Ma Vasundhara Singh F.a. Danevich M. Briere P. Loaiza B. Schmidt E. Elkhoury M. De Jesus A. Giuliani V. I. Umatov D. L. Helis S. I. Konovalov C. Rusconi M. Gros C. Nones L. Dumoulin V.n. Shlegel K. Eitel H. Khalife Marc Weber X. F. Navick Francesca Bellini G. Pessina A. Leder D.v. Poda V.i. Tretyak M. Beretta M. Beretta M. Beretta P. Pari L. Pagnanini L. Pagnanini Yu G. Kolomensky Yu G. Kolomensky Ioan Dafinei Jonathan Ouellet C. Augier Giovanni Benato Giovanni Benato K. Schäffner V. Sanglard A. Juillard Matias Velázquez V. V. Kobychev L. Vagneron L. Bergé E. Yakushev L. Gironi L. Gironi E. Olivieri J. Gascon A. Cazes Ch. Bourgeois V.b. Brudanin M. Chapellier N. Casali M. Xue V. D. Grigorieva Haiping Peng

subject

Lithium molybdate Physics - Instrumentation and Detectors Physics and Astronomy (miscellaneous)Analytical chemistry [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]nucl-ex 01 natural sciences Atomic chemistry.chemical_compound Particle and Plasma Physics two-neutrino double-beta decay scintillating bolometers 0103 physical sciences ddc:530 Beta (velocity)Nuclear [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]010306 general physics Nuclear Experiment Engineering (miscellaneous)physics.ins-det S076H2N Physics Quantum Physics 010308 nuclear & particles physics Physics Molecular Beta decay Nuclear & Particles Physics 3. Good health chemistry double beta decays bolometers Underground laboratory Ground state

description

We report the measurement of the two-neutrino double-beta ($2\nu\beta\beta$) decay of $^{100}$Mo to the ground state of $^{100}$Ru using lithium molybdate (\crystal) scintillating bolometers. The detectors were developed for the CUPID-Mo program and operated at the EDELWEISS-III low background facility in the Modane underground laboratory. From a total exposure of $42.235$ kg$\times$d, the half-life of $^{100}$Mo is determined to be $T_{1/2}^{2\nu}=[7.12^{+0.18}_{-0.14}\,\mathrm{(stat.)}\pm0.10\,\mathrm{(syst.)}]\times10^{18}$ years. This is the most accurate determination of the $2\nu\beta\beta$ half-life of $^{100}$Mo to date. We also confirm, with the statistical significance of $>3\sigma$, that the single-state dominance model of the $2\nu\beta\beta$ decay of $^{100}$Mo is favored over the high-state dominance model.

year	journal	country	edition	language
2020-01-29

https://hal.archives-ouvertes.fr/hal-02459811