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Электронный каталог: Agostini, M. - Searches for New Physics Below Twice the Electron Mass with GERDA
Agostini, M. - Searches for New Physics Below Twice the Electron Mass with GERDA
Статья
Автор: Agostini, M.
The European Physical Journal C [Electronic resource[: Searches for New Physics Below Twice the Electron Mass with GERDA
б.г.
ISBN отсутствует
Автор: Agostini, M.
The European Physical Journal C [Electronic resource[: Searches for New Physics Below Twice the Electron Mass with GERDA
б.г.
ISBN отсутствует
Статья
Agostini, M.
Searches for New Physics Below Twice the Electron Mass with GERDA / M.Agostini, M.Fomina, K.Gusev, A.Klimenko, O.Kochetov, A.Lubashevskiy, I.Nemchenok, N.Rumyantseva, E.Shevchik, M.Shirchenko, A.Smolnikov, I.Zhitnikov, D.Zinatulina // The European Physical Journal C [Electronic resource[. – 2024. – Vol. 84, No. 9. – P. 940. – URL: https://doi.org/10.1140/epjc/s10052-024-13020-0. – Bibliogr.: 75.
A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 and 1021 keV has been performed with data collected during Phase II of the GERmanium Detector Array (Gerda) exper- iment. Our analysis includes direct dark matter absorption as well as dark Compton scattering. With a total exposure of 105.5 kg years, no evidence for a signal above the back- ground has been observed. The resulting exclusion limits deduced with either Bayesian or Frequentist statistics are the most stringent direct constraints in the major part of the 140–1021 keV mass range. As an example, at a mass of 150 keV the dimensionless coupling of dark photons and axion-like particles to electrons has been constrained to α′/α < 8.7 × 10−24 and gae < 3.3 × 10−12 at 90% credible interval (CI), respectively. Additionally, a search for peak-like signals from beyond the Standard Model decays of nucleons and electrons is performed. We find for the inclu- sive decay of a single neutron in 76 Ge a lower lifetime limit of τn > 1.5 × 10 24 years and for a proton τp > 1.3 × 10 24 years at 90% CI. For the electron decay e- → νeγ a lower limit of τe > 5.4 × 10 25 years at 90% CI has been determined.
ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 341.1б - Бета-распад и К-захват. Схемы распада и спектры
Agostini, M.
Searches for New Physics Below Twice the Electron Mass with GERDA / M.Agostini, M.Fomina, K.Gusev, A.Klimenko, O.Kochetov, A.Lubashevskiy, I.Nemchenok, N.Rumyantseva, E.Shevchik, M.Shirchenko, A.Smolnikov, I.Zhitnikov, D.Zinatulina // The European Physical Journal C [Electronic resource[. – 2024. – Vol. 84, No. 9. – P. 940. – URL: https://doi.org/10.1140/epjc/s10052-024-13020-0. – Bibliogr.: 75.
A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 and 1021 keV has been performed with data collected during Phase II of the GERmanium Detector Array (Gerda) exper- iment. Our analysis includes direct dark matter absorption as well as dark Compton scattering. With a total exposure of 105.5 kg years, no evidence for a signal above the back- ground has been observed. The resulting exclusion limits deduced with either Bayesian or Frequentist statistics are the most stringent direct constraints in the major part of the 140–1021 keV mass range. As an example, at a mass of 150 keV the dimensionless coupling of dark photons and axion-like particles to electrons has been constrained to α′/α < 8.7 × 10−24 and gae < 3.3 × 10−12 at 90% credible interval (CI), respectively. Additionally, a search for peak-like signals from beyond the Standard Model decays of nucleons and electrons is performed. We find for the inclu- sive decay of a single neutron in 76 Ge a lower lifetime limit of τn > 1.5 × 10 24 years and for a proton τp > 1.3 × 10 24 years at 90% CI. For the electron decay e- → νeγ a lower limit of τe > 5.4 × 10 25 years at 90% CI has been determined.
ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 341.1б - Бета-распад и К-захват. Схемы распада и спектры