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Probing Majorana neutrinos with double-b decay.

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Title: Probing Majorana neutrinos with double-b decay.
Authors: Agostini, M., Bakalyarov, A. M., Balata, M., Barabanov, I., Baudis, L., Bauer, C., Bellotti, E., Belogurov, S., Bettini, A., Bezrukov, L., Borowicz, D., Brudanin, V., Brugnera, R., Caldwell, A., Cattadori, C., Chernogorov, A., Comellato, T., D’Andrea, V., Demidova, E. V., Di Marco, N.
Source: Science (pre-March 2025). 9/27/2019, Vol. 365 Issue 6460, p1445-1448. 4p. 3 Diagrams, 1 Chart.
Subjects: Majorana fermions, Double beta decay, Neutrons, Particle physics, Metaphysical cosmology, Antimatter
Abstract: A discovery that neutrinos are Majorana fermions would have profound implications for particle physics and cosmology. The Majorana character of neutrinos would make possible the neutrinoless double-b (0nbb) decay, a matter-creating process without the balancing emission of antimatter. The GERDA Collaboration searches for the 0nbb decay of 76Ge by operating bare germanium detectors in an active liquid argon shield. With a total exposure of 82.4 kg⋅year, we observe no signal and derive a lower half-life limit of T1/2 > 0.9 × 1026 years (90% C.L.). Our T1/2 sensitivity, assuming no signal, is 1.1 × 1026 years. Combining the latter with those from other 0nbb decay searches yields a sensitivity to the effective Majorana neutrino mass of 0.07 to 0.16 electron volts. [ABSTRACT FROM AUTHOR]
Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: Probing Majorana neutrinos with double-b decay.
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  Data: <searchLink fieldCode="AR" term="%22Agostini%2C+M%2E%22">Agostini, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Bakalyarov%2C+A%2E+M%2E%22">Bakalyarov, A. M.</searchLink><br /><searchLink fieldCode="AR" term="%22Balata%2C+M%2E%22">Balata, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Barabanov%2C+I%2E%22">Barabanov, I.</searchLink><br /><searchLink fieldCode="AR" term="%22Baudis%2C+L%2E%22">Baudis, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Bauer%2C+C%2E%22">Bauer, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Bellotti%2C+E%2E%22">Bellotti, E.</searchLink><br /><searchLink fieldCode="AR" term="%22Belogurov%2C+S%2E%22">Belogurov, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Bettini%2C+A%2E%22">Bettini, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Bezrukov%2C+L%2E%22">Bezrukov, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Borowicz%2C+D%2E%22">Borowicz, D.</searchLink><br /><searchLink fieldCode="AR" term="%22Brudanin%2C+V%2E%22">Brudanin, V.</searchLink><br /><searchLink fieldCode="AR" term="%22Brugnera%2C+R%2E%22">Brugnera, R.</searchLink><br /><searchLink fieldCode="AR" term="%22Caldwell%2C+A%2E%22">Caldwell, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Cattadori%2C+C%2E%22">Cattadori, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Chernogorov%2C+A%2E%22">Chernogorov, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Comellato%2C+T%2E%22">Comellato, T.</searchLink><br /><searchLink fieldCode="AR" term="%22D’Andrea%2C+V%2E%22">D’Andrea, V.</searchLink><br /><searchLink fieldCode="AR" term="%22Demidova%2C+E%2E+V%2E%22">Demidova, E. V.</searchLink><br /><searchLink fieldCode="AR" term="%22Di+Marco%2C+N%2E%22">Di Marco, N.</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Science+%28pre-March+2025%29%22">Science (pre-March 2025)</searchLink>. 9/27/2019, Vol. 365 Issue 6460, p1445-1448. 4p. 3 Diagrams, 1 Chart.
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  Data: <searchLink fieldCode="DE" term="%22Majorana+fermions%22">Majorana fermions</searchLink><br /><searchLink fieldCode="DE" term="%22Double+beta+decay%22">Double beta decay</searchLink><br /><searchLink fieldCode="DE" term="%22Neutrons%22">Neutrons</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+physics%22">Particle physics</searchLink><br /><searchLink fieldCode="DE" term="%22Metaphysical+cosmology%22">Metaphysical cosmology</searchLink><br /><searchLink fieldCode="DE" term="%22Antimatter%22">Antimatter</searchLink>
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  Label: Abstract
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  Data: A discovery that neutrinos are Majorana fermions would have profound implications for particle physics and cosmology. The Majorana character of neutrinos would make possible the neutrinoless double-b (0nbb) decay, a matter-creating process without the balancing emission of antimatter. The GERDA Collaboration searches for the 0nbb decay of 76Ge by operating bare germanium detectors in an active liquid argon shield. With a total exposure of 82.4 kg⋅year, we observe no signal and derive a lower half-life limit of T1/2 > 0.9 × 1026 years (90% C.L.). Our T1/2 sensitivity, assuming no signal, is 1.1 × 1026 years. Combining the latter with those from other 0nbb decay searches yields a sensitivity to the effective Majorana neutrino mass of 0.07 to 0.16 electron volts. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Science (pre-March 2025) is the property of American Association for the Advancement of Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=pbh&AN=138908340
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