Search for double beta decay of 48Ca in the TGV experiment

Brudanin, V.; Rukhadze, N. I.; Briançon, Ch.; Egorov, V.; Kovalenko, V.; Kovalı́k, A.; Salamatin, A. V.; Štekl, I.; Tsoupko-Sitnikov, V. V.; Vylov, Ts.; Čermák, Pavel

doi:10.1016/s0370-2693(00)01244-2

Cited by 60 publications

(15 citation statements)

References 10 publications

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“…The 2νββ decay mode of 48 Ca was first discovered in the Hoover Dam TPC experiment employing approximately 14 g of isotope [18]. With a sample of approximately 100 events, the half-life was measured to be T based on only five events in the region of interest [19]. Both of these measurements are in agreement with the shell-model prediction of T 2ν 1=2 ¼ 3.7 × 10 19 yr [20].…”

Section: Introductionsupporting

confidence: 61%

Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay ofCa48with the NEMO-3 detector

Arnold¹,

Augier²,

Bakalyarov³

et al. 2016

Phys. Rev. D

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Blot, S., Bongrand, M., Brudanin, V. et al.). (2016) Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of Ca48 with the NEMO-3 detector. Physical Review D (Particles, Fields, Gravitation and Cosmology), 93 (11). 112008. Permanent WRAP URL: http://wrap.warwick.ac.uk/85101 Copyright and reuse:The Warwick Research Archive Portal (WRAP) makes this work by researchers of the University of Warwick available open access under the following conditions. Copyright © and all moral rights to the version of the paper presented here belong to the individual author(s) and/or other copyright owners. To the extent reasonable and practicable the material made available in WRAP has been checked for eligibility before being made available.Copies of full items can be used for personal research or study, educational, or not-for-profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way. Publisher statement: © 2016 American Physical Society A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. A search for neutrinoless double-beta decay of 48 Ca yields a null result, and a corresponding lower * Deceased.PHYSICAL REVIEW D 93, 112008 (2016) 2470-0010=2016=93(11)=112008 (9) 112008-1 © 2016 American Physical Society limit on the half-life is found to be T 0ν 1=2 > 2.0 × 10 22 yr at 90% confidence level, translating into an upper limit on the effective Majorana neutrino mass of hm ββ i < 6.0-26 eV, with the range reflecting different nuclear matrix element calculations. Limits are also set on models involving Majoron emission and right-handed currents.

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Section: Introductionsupporting

confidence: 61%

Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay ofCa48with the NEMO-3 detector

Arnold¹,

Augier²,

Bakalyarov³

et al. 2016

Phys. Rev. D

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“…The obtained half-life value is, T 2ν 1/2 = [4.4 +0.5 −0.4 (stat) ± 0.4(syst)] · 10 19 y. This value is in good agreement with two previous measurements [33,34], and has much higher precision. The half-life value obtained is in good agreement with the Shell Model prediction of T 2ν 1/2 = 3.9 · 10 19 y [35].…”

Section: Results For 48 Ca (Q 2β = 4272 Mev)supporting

confidence: 88%

NEMO 3 double beta decay experiment: Latest results

Barabash¹,

collaboration²

2009

J. Phys.: Conf. Ser.

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The double beta decay experiment NEMO 3 has been taking data since February 2003. The aim of this experiment is to search for neutrinoless decay and investigate two neutrino double beta decay in seven different enriched isotopes ( 100 Mo, 82 Se, 48 Ca, 96 Zr, 116 Cd, 130 Te and 150 Nd). After analysis of the data corresponding to 693 days, no evidence for 0νββ decay in 100 Mo and 82 Se was found. The half-life limits at 90% C.L. are 5.8 · 10 23 y and 2.1 · 10 23 y, respectively. Using ∼ 940 days of data, preliminary results were obtained for 48 Ca, 96 Zr and 150 Nd. For two neutrino decay half-life values were measured, T 1/2 ( 48 Ca) = [4.4 +0.5 −0.4 (stat) ± 0.4(syst)] · 10 19 y, T 1/2 ( 96 Zr) = [2.3 ± 0.2(stat) ± 0.3(syst)] · 10 19 y and T 1/2 ( 150 Nd) = [9.2 +0.25 −0.22 (stat) ± 0.62(syst)] · 10 18 y. Also for 0νββ decay the following limits at 90% C.L. were obtained, > 1.3 · 10 22 y for 48 Ca, > 8.6 · 10 21 y for 96 Zr and > 1.8 · 10 22 y for 150 Nd.

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“…Taking only the matrix elements below 5 MeV, we deduce a half-life of T (2ν) 1/2 = (2.00 ± 0.42) × 10 19 years. If one applies the reduction of the ββ-matrix element M (2ν) DGT by the afore-mentioned 24% originating from destructive contributions of higher (and unresolved) levels one would deduce T (2ν) 1/2 = (3.55 ± 0.75) × 10 19 years (preliminary), which compares well with the value from the most recent counting experiments [31,32], T Clearly, by compromising on resolution, the detailed structure of the nuclear response visible in the present case would otherwise remain completely elusive.…”

Section: Double-beta Decaysupporting

confidence: 75%

Facets of charge-exchange reactions — from astrophysics to double beta decay

Frekers

2006

Progress in Particle and Nuclear Physics

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Search for double beta decay of 48Ca in the TGV experiment

Cited by 60 publications

References 10 publications

Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay ofCa48with the NEMO-3 detector

Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay ofCa48with the NEMO-3 detector

NEMO 3 double beta decay experiment: Latest results

Facets of charge-exchange reactions — from astrophysics to double beta decay

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