title: First results of the search for neutrinoless double-beta decay with the NEMO 3 detector.
abstract: The NEMO 3 detector, which has been operating in the Fréjus underground laboratory since February 2003, is devoted to the search for neutrinoless double-beta decay (beta beta 0v). The half-lives of the two neutrino double-beta decay (beta beta 2v) have been measured for 100Mo and 82Se. After 389 effective days of data collection from February 2003 until September 2004 (phase I), no evidence for neutrinoless double-beta decay was found from approximately 7 kg of 100Mo and approximately 1 kg of 82Se. The corresponding limits are T1/2(beta beta0v) > 4.6 x 10(23) yr for 100Mo and T1/2(beta beta 0v) > 1.0 x 10(23) yr for 82Se (90% C.L.). Depending on the nuclear matrix element calculation, the limits for the effective Majorana neutrino mass are <mv> < 0.7-2.8 e/v for 100Mo and <mv> < 1.7-4.9 eV for 82Se.
authors.affiliation: IReS, IN2P3-CNRS and ULP, 67037 Strasbourg, France.
authors.forename: R
authors.initials: R
authors.lastname: Arnold
authors.forename: C
authors.initials: C
authors.lastname: Augier
authors.forename: J
authors.initials: J
authors.lastname: Baker
authors.forename: A
authors.initials: A
authors.lastname: Barabash
authors.forename: G
authors.initials: G
authors.lastname: Broudin
authors.forename: V
authors.initials: V
authors.lastname: Brudanin
authors.forename: A J
authors.initials: AJ
authors.lastname: Caffrey
authors.forename: E
authors.initials: E
authors.lastname: Caurier
authors.forename: V
authors.initials: V
authors.lastname: Egorov
authors.forename: K
authors.initials: K
authors.lastname: Errahmane
authors.forename: A I
authors.initials: AI
authors.lastname: Etienvre
authors.forename: J L
authors.initials: JL
authors.lastname: Guyonnet
authors.forename: F
authors.initials: F
authors.lastname: Hubert
authors.forename: Ph
authors.initials: P
authors.lastname: Hubert
authors.forename: C
authors.initials: C
authors.lastname: Jollet
authors.forename: S
authors.initials: S
authors.lastname: Jullian
authors.forename: O
authors.initials: O
authors.lastname: Kochetov
authors.forename: V
authors.initials: V
authors.lastname: Kovalenko
authors.forename: S
authors.initials: S
authors.lastname: Konovalov
authors.forename: D
authors.initials: D
authors.lastname: Lalanne
authors.forename: F
authors.initials: F
authors.lastname: Leccia
authors.forename: C
authors.initials: C
authors.lastname: Longuemare
authors.forename: G
authors.initials: G
authors.lastname: Lutter
authors.forename: Ch
authors.initials: Ch
authors.lastname: Marquet
authors.forename: F
authors.initials: F
authors.lastname: Mauger
authors.forename: F
authors.initials: F
authors.lastname: Nowacki
authors.forename: H
authors.initials: H
authors.lastname: Ohsumi
authors.forename: F
authors.initials: F
authors.lastname: Piquemal
authors.forename: J L
authors.initials: JL
authors.lastname: Reyss
authors.forename: R
authors.initials: R
authors.lastname: Saakyan
authors.forename: X
authors.initials: X
authors.lastname: Sarazin
authors.forename: L
authors.initials: L
authors.lastname: Simard
authors.forename: F
authors.initials: F
authors.lastname: Simkovic
authors.forename: Yu
authors.initials: Y
authors.lastname: Shitov
authors.forename: A
authors.initials: A
authors.lastname: Smolnikov
authors.forename: L
authors.initials: L
authors.lastname: Stekl
authors.forename: J
authors.initials: J
authors.lastname: Suhonen
authors.forename: C S
authors.initials: CS
authors.lastname: Sutton
authors.forename: G
authors.initials: G
authors.lastname: Szklarz
authors.forename: J
authors.initials: J
authors.lastname: Thomas
authors.forename: V
authors.initials: V
authors.lastname: Timkin
authors.forename: V
authors.initials: V
authors.lastname: Tretyak
authors.forename: V
authors.initials: V
authors.lastname: Umatov
authors.forename: L
authors.initials: L
authors.lastname: Vála
authors.forename: I
authors.initials: I
authors.lastname: Vanushin
authors.forename: V
authors.initials: V
authors.lastname: Vasilyev
authors.forename: V
authors.initials: V
authors.lastname: Vorobel
authors.forename: Ts
authors.initials: Ts
authors.lastname: Vylov