Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay

It is shown that the non-zero transition magnetic moment ($\mu_{tran}$) between the sterile neutrino ($\nu_{s}$) and the muon neutrino ($\nu_{\mu}$) could be effectively searched for via the Primakoff effect, in the process of nucleus $Z$, with the subsequent $\nu_{s}\to \nu_{\mu} + \gamma$ decay. F...

Descripción completa

Detalles Bibliográficos
Autores principales: Gninenko, S.N., Krasnikov, N.V.
Lenguaje:eng
Publicado: 1998
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)00130-6
http://cds.cern.ch/record/362845
_version_ 1780892756885897216
author Gninenko, S.N.
Krasnikov, N.V.
author_facet Gninenko, S.N.
Krasnikov, N.V.
author_sort Gninenko, S.N.
collection CERN
description It is shown that the non-zero transition magnetic moment ($\mu_{tran}$) between the sterile neutrino ($\nu_{s}$) and the muon neutrino ($\nu_{\mu}$) could be effectively searched for via the Primakoff effect, in the process of nucleus $Z$, with the subsequent $\nu_{s}\to \nu_{\mu} + \gamma$ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent constraint of $\mu_{tran} < (10^{-6} - 10^{-9}) \mu_{B}$ is obtained depending on the value of $\nu_{s}$ mass. For the $m_{s}\sim O(1) GeV$ region these bounds are comparable with the present experimental ones on $\nu_{\mu}$ and From the same analysis the constraint on $\nu_{\tau}(\nu_{s})\to \nu_{\mu} is obtained. The limit is valid for the $m_{\nu}$ range for neutrino masses up to $m_{\nu}\sim O(1) GeV$.\
id cern-362845
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3628452023-06-03T02:16:28Zdoi:10.1016/S0370-2693(99)00130-6http://cds.cern.ch/record/362845engGninenko, S.N.Krasnikov, N.V.Limits on the magnetic moment of sterile neutrino and two-photon neutrino decayParticle Physics - PhenomenologyIt is shown that the non-zero transition magnetic moment ($\mu_{tran}$) between the sterile neutrino ($\nu_{s}$) and the muon neutrino ($\nu_{\mu}$) could be effectively searched for via the Primakoff effect, in the process of nucleus $Z$, with the subsequent $\nu_{s}\to \nu_{\mu} + \gamma$ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent constraint of $\mu_{tran} < (10^{-6} - 10^{-9}) \mu_{B}$ is obtained depending on the value of $\nu_{s}$ mass. For the $m_{s}\sim O(1) GeV$ region these bounds are comparable with the present experimental ones on $\nu_{\mu}$ and From the same analysis the constraint on $\nu_{\tau}(\nu_{s})\to \nu_{\mu} is obtained. The limit is valid for the $m_{\nu}$ range for neutrino masses up to $m_{\nu}\sim O(1) GeV$.\It is shown that the non-zero transition magnetic moment ($\mu_{tran}$) between the sterile neutrino ($\nu_{s}$) and the muon neutrino ($\nu_{\mu}$) could be effectively searched for via the Primakoff effect, in the process of $\nu_{\mu} Z \to \nu_{s}Z$ conversion in the external Coulomb field of a nucleus $Z$, with the subsequent $\nu_{s}\to \nu_{\mu} + \gamma$ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent constraint of $\mu_{tran} < (10^{-6} - 10^{-9}) \mu_{B}$ is obtained depending on the value of $\nu_{s}$ mass. For the $m_{s}\sim O(1) GeV$ region these bounds are comparable with the present experimental ones on $\nu_{\mu}$ and $\nu_{e}$ diagonal magnetic moments and are more sensitive than those on $\nu_{\tau}$ magnetic moment. From the same analysis the constraint on $\nu_{\tau}(\nu_{s})\to \nu_{\mu} +\gamma + \gamma$ decay lifetime $\tau > 2\times10^{13} sec/m_{\nu}^{7}(MeV)$ is obtained. The limit is valid for neutrino masses up to $m_{\nu}\sim O(1)GeV$.It is shown that the non-zero transition magnetic moment ($\mu_{tran}$) between the sterile neutrino ($\nu_{s}$) and the muon neutrino ($\nu_{\mu}$) could be effectively searched for via the Primakoff effect, in the process of $\nu_{\mu} Z \to \nu_{s}Z$ conversion in the external Coulomb field of a nucleus $Z$, with the subsequent $\nu_{s}\to \nu_{\mu} + \gamma$ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent constraint of $\mu_{tran} < (10^{-6} - 10^{-9}) \mu_{B}$ is obtained depending on the value of $\nu_{s}$ mass. For the $m_{s}\sim O(1) GeV$ region these bounds are comparable with the present experimental ones on $\nu_{\mu}$ and $\nu_{e}$ diagonal magnetic moments and are more sensitive than those on $\nu_{\tau}$ magnetic moment. From the same analysis the constraint on $\nu_{\tau}(\nu_{s})\to \nu_{\mu} +\gamma + \gamma$ decay lifetime $\tau > 2\times10^{13} sec/m_{\nu}^{7}(MeV)$ is obtained. The limit is valid for neutrino masses up to $m_{\nu}\sim O(1)GeV$.It is shown that the non-zero transition magnetic moment ($\mu_{tran}$) between the sterile neutrino ($\nu_{s}$) and the muon neutrino ($\nu_{\mu}$) could be effectively searched for via the Primakoff effect, in the process of $\nu_{\mu} Z \to \nu_{s}Z$ conversion in the external Coulomb field of a nucleus $Z$, with the subsequent $\nu_{s}\to \nu_{\mu} + \gamma$ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent constraint of $\mu_{tran} < (10^{-6} - 10^{-9}) \mu_{B}$ is obtained depending on the value of $\nu_{s}$ mass. For the $m_{s}\sim O(1) GeV$ region these bounds are comparable with the present experimental ones on $\nu_{\mu}$ and $\nu_{e}$ diagonal magnetic moments and are more sensitive than those on $\nu_{\tau}$ magnetic moment. From the same analysis the constraint on $\nu_{\tau}(\nu_{s})\to \nu_{\mu} +\gamma + \gamma$ decay lifetime $\tau > 2\times10^{13} sec/m_{\nu}^{7}(MeV)$ is obtained. The limit is valid for neutrino masses up to $m_{\nu}\sim O(1)GeV$.It is shown that the non-zero transition magnetic moment ( μ tran ) between the sterile neutrino ( ν s ) and the muon neutrino ( ν μ ) could be effectively searched for via the Primakoff effect, in the process of ν μ Z → ν s Z conversion in the external Coulomb field of a nucleus Z , with the subsequent ν s → ν μ + γ decay. From the recent results of the NOMAD neutrino detector at CERN a model-independent constraint of μ tran <(10 −6 −10 −9 ) μ B is obtained depending on the value of ν s mass. For the m s ∼ O (1) GeV region these bounds are comparable with the present experimental ones on ν μ and ν e diagonal magnetic moments and are more sensitive than those on ν τ magnetic moment. Further improvement of the bounds might be interesting for understanding of the origin of the KARMEN anomaly. From the same analysis the constraint on ν τ ( ν s )→ ν μ + γ + γ decay lifetime τ >2×10 13 s/ m ν 7 MeV) is obtained. The limit is valid for neutrino masses up to m ν ∼ O (1) GeV.hep-ph/9808370CERN-EP-99-038CERN-EP-99-38CERN-EP-99-038INR-1033oai:cds.cern.ch:3628451998-08-21
spellingShingle Particle Physics - Phenomenology
Gninenko, S.N.
Krasnikov, N.V.
Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
title Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
title_full Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
title_fullStr Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
title_full_unstemmed Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
title_short Limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
title_sort limits on the magnetic moment of sterile neutrino and two-photon neutrino decay
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)00130-6
http://cds.cern.ch/record/362845
work_keys_str_mv AT gninenkosn limitsonthemagneticmomentofsterileneutrinoandtwophotonneutrinodecay
AT krasnikovnv limitsonthemagneticmomentofsterileneutrinoandtwophotonneutrinodecay

Ejemplares similares