Decaying neutrinos: The long way to isotropy
We investigate a scenario in which neutrinos are coupled to a pseudoscalar degree of freedom \(\ph\) and where decays \(\nu_1 \to \nu_2+\ph\) and inverse decays are the responsible mechanism for obtaining equilibrium. In this context we discuss the implication of the invisible neutrino decay on the...
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| creator | Basboll, Anders Ole Eggers Bjaelde |
| description | We investigate a scenario in which neutrinos are coupled to a pseudoscalar degree of freedom \(\ph\) and where decays \(\nu_1 \to \nu_2+\ph\) and inverse decays are the responsible mechanism for obtaining equilibrium. In this context we discuss the implication of the invisible neutrino decay on the neutrino-pseudoscalar coupling constant and the neutrino lifetime. Assuming the realistic scenario of a thermal background of neutrinos and pseudoscalar we update the bound on the (off-diagonal) neutrino-pseudoscalar coupling constant to \(g |
| doi_str_mv | 10.48550/arxiv.0911.1771 |
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In this context we discuss the implication of the invisible neutrino decay on the neutrino-pseudoscalar coupling constant and the neutrino lifetime. Assuming the realistic scenario of a thermal background of neutrinos and pseudoscalar we update the bound on the (off-diagonal) neutrino-pseudoscalar coupling constant to \(g<2.6\times10^{-13}\) and the bound on the neutrino lifetime to \(\tau<1\times10^{13}\,\rm{s}\). Furthermore we confirm analytically that kinetic equilibrium is delayed by two Lorentz \(\ga\)--factors -- one for time dilation of the (decaying) neutrino lifetime and one from the opening angle. 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We have also confirmed this behavior numerically.</description><subject>Coupling</subject><subject>Decay</subject><subject>Isotropy</subject><subject>Mathematical analysis</subject><subject>Neutrinos</subject><subject>Physics - Cosmology and Nongalactic Astrophysics</subject><subject>Physics - High Energy Physics - Phenomenology</subject><issn>2331-8422</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GOX</sourceid><recordid>eNotj81LxDAUxIMguKx79yQFr3bNe-lLWm-yfsKCl95L0jTaZW1q0qr97-26ngZmhmF-jF0AX2c5Eb_R4af9WvMCYA1KwQlboBCQ5hniGVvFuOOco1RIJBbs-r6p9dR2b0nXjENoOx9vk_K9SfZ-9r71lAw-aaMfgu-nc3bq9D42q39dsvLxodw8p9vXp5fN3TbVBJgSGaiFs2BrZwrU0hlHgoywhRK5BWf1nBuiWsscQRvuLFcuk5kzHGslluzyOPtHUvWh_dBhqg5E1YFoLlwdC33wn2MTh2rnx9DNlyrkuUIpSaL4BTO5Tcg</recordid><startdate>20100827</startdate><enddate>20100827</enddate><creator>Basboll, Anders</creator><creator>Ole Eggers Bjaelde</creator><general>Cornell University Library, arXiv.org</general><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>L6V</scope><scope>M7S</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>GOX</scope></search><sort><creationdate>20100827</creationdate><title>Decaying neutrinos: The long way to isotropy</title><author>Basboll, Anders ; Ole Eggers Bjaelde</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a512-55b1c3fd1dcfb92a6fbf535b3d9738d1fda1c3b55ca6821ab0fd07f464fb02c73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Coupling</topic><topic>Decay</topic><topic>Isotropy</topic><topic>Mathematical analysis</topic><topic>Neutrinos</topic><topic>Physics - Cosmology and Nongalactic Astrophysics</topic><topic>Physics - High Energy Physics - Phenomenology</topic><toplevel>online_resources</toplevel><creatorcontrib>Basboll, Anders</creatorcontrib><creatorcontrib>Ole Eggers Bjaelde</creatorcontrib><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>Engineering Collection</collection><collection>arXiv.org</collection><jtitle>arXiv.org</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Basboll, Anders</au><au>Ole Eggers Bjaelde</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Decaying neutrinos: The long way to isotropy</atitle><jtitle>arXiv.org</jtitle><date>2010-08-27</date><risdate>2010</risdate><eissn>2331-8422</eissn><abstract>We investigate a scenario in which neutrinos are coupled to a pseudoscalar degree of freedom \(\ph\) and where decays \(\nu_1 \to \nu_2+\ph\) and inverse decays are the responsible mechanism for obtaining equilibrium. 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| subjects | Coupling Decay Isotropy Mathematical analysis Neutrinos Physics - Cosmology and Nongalactic Astrophysics Physics - High Energy Physics - Phenomenology |
| title | Decaying neutrinos: The long way to isotropy |
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