M. Bongrand
University of Paris-Sud
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Featured researches published by M. Bongrand.
Physical Review C | 2009
J. Argyriades; R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; M. Bongrand; G. Broudin; V. Brudanin; A. J. Caffrey; E. Chauveau; Z. Daraktchieva; D. Durand; V. Egorov; N. Fatemi-Ghomi; R. L. Flack; Ph. Hubert; J. Jerie; S. Jullian; M. Kauer; S. King; A. Klimenko; O. Kochetov; S. I. Konovalov; V. Kovalenko; D. Lalanne; T. Lamhamdi; K. Lang; Y. Lemière; C. Longuemare
The half-life for double-{beta} decay of {sup 150}Nd has been measured by the NEMO-3 experiment at the Modane Underground Laboratory. Using 924.7 days of data recorded with 36.55 g of {sup 150}Nd, we measured the half-life for 2{nu}{beta}{beta} decay to be T{sub 1/2}{sup 2{nu}}=(9.11{sub -0.22}{sup +0.25}(stat.){+-}0.63(syst.))x10{sup 18} yr. The observed limit on the half-life for neutrinoless double-{beta} decay is found to be T{sub 1/2}{sup 0{nu}}>1.8x10{sup 22} yr at 90% confidence level. This translates into a limit on the effective Majorana neutrino mass of <4.0-6.3 eV if the nuclear deformation is taken into account. We also set limits on models involving Majoron emission, right-handed currents, and transitions to excited states.
Nuclear Physics | 2007
R. Arnold; V. I. Umatov; C.S. Sutton; F. Piquemal; V. Timkin; L. Vála; F. Hubert; A. J. Caffrey; V. Kovalenko; J. Baker; I. Vanyushin; L. Simard; V. Vorobel; J. Jerie; I. Stekl; V. Brudanin; O. Kochetov; S. Jullian; R. Saakyan; G. Broudin; V. Egorov; V.I. Tretyak; V. Vasiliev; G. Szklarz; X. Sarazin; Y. Lemière; N. Fatemi-Ghomi; S. I. Konovalov; A. Nachab; Ts. Vylov
The double beta decay of 100Mo to the 0^+_1 and 2^+_1 excited states of 100Ru is studied using the NEMO 3 data. After the analysis of 8024 h of data the half-life for the two-neutrino double beta decay of 100Mo to the excited 0^+_1 state is measured to be T^(2nu)_1/2 = [5.7^{+1.3}_{-0.9}(stat)+/-0.8(syst)]x 10^20 y. The signal-to-background ratio is equal to 3. Information about energy and angular distributions of emitted electrons is also obtained. No evidence for neutrinoless double beta decay to the excited 0^+_1 state has been found. The corresponding half-life limit is T^(0nu)_1/2(0^+ -->0^+_1)>8.9 x 10^22 y (at 90% C.L.). The search for the double beta decay to the 2^+_1 excited state has allowed the determination of limits on the half-life for the two neutrino mode T^(2nu)_1/2(0^+ -->2^+_1)>1.1 x 10^21 y (at 90% C.L.) and for the neutrinoless mode T^(0nu)_1/2(0^+ -->2^+_1)>1.6 x 10^23 y (at 90% C.L.).
Physical Review D | 2014
R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A.J. Caffrey; C. Cerna; A. Chapon; E. Chauveau; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; R. Flack; X. Garrido; H. Gómez; B. Guillon; P. Guzowski; R. Hodák; Ph. Hubert; C. Hugon; S. Jullian; A. Klimenko; O. Kochetov
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.
Physical Review Letters | 2011
R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; M. Bongrand; G. Broudin-Bay; V. Brudanin; A. J. Caffrey; A. Chapon; E. Chauveau; D. Durand; V. Egorov; R. Flack; X. Garrido; J. Grozier; B. Guillon; Ph. Hubert; C. M. Jackson; S. Jullian; M. Kauer; A. Klimenko; O. Kochetov; S. I. Konovalov; V. Kovalenko; D. Lalanne; T. Lamhamdi; K. Lang; Z. Liptak
We report results from the NEMO-3 experiment based on an exposure of 1275 days with 661 g of (130)Te in the form of enriched and natural tellurium foils. The ββ decay rate of (130)Te is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T(½)(2ν) = [7.0 ± 0.9(stat) ± 1.1(syst)] × 10(20) yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay.
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2010
J. Argyriades; R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; M. Bongrand; C. Bourgeois; D. Breton; M. Briére; G. Broudin-Bay; V. Brudanin; A. J. Caffrey; S. Cebrián; A. Chapon; E. Chauveau; Th. Dafni; J. Díaz; D. Durand; V. Egorov; J. J. Evans; R. Flack; K-I. Fushima; I.G. Irastorza; X. Garrido; Haley Louise Gomez; B. Guillon; A. Holin; K. Holy; J. J. Horkey
The development of BiPo detectors is dedicated to the measurement of extremely high radiopurity in
Physical Review D | 2016
R. Arnold; C. Augier; A. M. Bakalyarov; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A.J. Caffrey; S. Calvez; M. Cascella; C. Cerna; J. P. Cesar; A. Chapon; E. Chauveau; A. Chopra; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; L. Fajt; D. Filosofov; R. L. Flack; X. Garrido; Haley Louise Gomez; B. Guillon
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Physical Review D | 2016
R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A. J. Caffrey; S. Calvez; M. Cascella; C. Cerna; J. P. Cesar; A. Chapon; E. Chauveau; A. Chopra; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; L. Fajt; D. Filosofov; R. L. Flack; X. Garrido; H. Gómez; B. Guillon; P. Guzowski
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Physical Review Letters | 2011
R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; M. Bongrand; G. Broudin-Bay; Brudanin; A. J. Caffrey; A. Chapon; E. Chauveau; D. Durand; Egorov; R. L. Flack; X. Garrido; J. Grozier; B. Guillon; Ph. Hubert; C. Hugon; C. M. Jackson; S. Jullian; M. Kauer; A. Klimenko; O. Kochetov; S. I. Konovalov; Kovalenko; D. Lalanne; T. Lamhamdi; K. Lang
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Physical Review D | 2014
R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A. J. Caffrey; C. Cerna; A. Chapon; E. Chauveau; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; R. L. Flack; X. Garrido; Haley Louise Gomez; B. Guillon; P. Guzowski; R. Hodák; Ph. Hubert; C. Hugon; S. Jullian; A. Klimenko; O. Kochetov
Bi for the SuperNEMO double beta decay source foils. A modular prototype, called BiPo-1, with 0.8
Physical Review Letters | 2011
R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; M. Bongrand; G. Broudin-Bay; V. Brudanin; A. J. Caffrey; A. Chapon; E. Chauveau; D. Durand; V. Egorov; R. L. Flack; X. Garrido; J. Grozier; B. Guillon; Ph. Hubert; C. Hugon; C. M. Jackson; S. Jullian; M. Kauer; A. Klimenko; O. Kochetov; S. I. Konovalov; V. Kovalenko; D. Lalanne; T. Lamhamdi; K. Lang
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