Search for neutrinoless double-beta decay of Mo100 with the NEMO-3 detector

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Abstract

We report the results of a search for the neutrinoless double-β decay (0νββ) of Mo100, using the NEMO-3 detector to reconstruct the full topology of the final state events. With an exposure of 34.7  kg·y, no evidence for the 0νββ signal has been found, yielding a limit for the light Majorana neutrino mass mechanism of T1/2(0νββ)>1.1×1024 years (90% C.L.) once both statistical and systematic uncertainties are taken into account. Depending on the nuclear matrix elements this corresponds to an upper limit on the Majorana effective neutrino mass of ⟨mν⟩<0.3–0.9  eV (90% C.L.). Constraints on other lepton number violating mechanisms of 0νββ decays are also given. Searching for high-energy double electron events in all suitable sources of the detector, no event in the energy region [3.2–10] MeV is observed for an exposure of 47  kg·y.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Neutrinos -- Mass
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: 12 June 2014
Dates:
Date
Event
12 June 2014
Published
15 November 2013
Submitted
Volume: Volume 5
Number: Number 89
Number of Pages: 6
Article Number: Article number 111101
DOI: 10.1103/PhysRevD.89.111101
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 27 December 2015
Date of first compliant Open Access: 27 December 2015
Funder: Science and Technology Facilities Council (Great Britain) (STFC), Grantová agentura České republiky [Grant Agency of the Czech Republic] (GACR), Centre national de la recherche scientifique (France) (CNRS), Institut national de physique nucléaire et de physique des particules (IN2P3), Rossiĭskiĭ fond fundamentalʹnykh issledovaniĭ [Russian Foundation for Basic Research] (RFBR), National Science Foundation (U.S.) (NSF)
URI: https://wrap.warwick.ac.uk/62163/

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