Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?

We first study how sterile neutrinos can fit the 5sigma bar-nu_mu --> bar-nu_e LSND anomaly: 3+1 solutions give a poor fit, but better than than 2+2 solutions (the best fit regions are somewhat different, so that MiniBoone could discriminate). If instead MiniBoone will find no nu_mu --> nu_e s...

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Detalles Bibliográficos
Autor principal: Strumia, Alessandro
Lenguaje:eng
Publicado: 2002
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(02)02042-7
http://cds.cern.ch/record/535160
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author Strumia, Alessandro
author_facet Strumia, Alessandro
author_sort Strumia, Alessandro
collection CERN
description We first study how sterile neutrinos can fit the 5sigma bar-nu_mu --> bar-nu_e LSND anomaly: 3+1 solutions give a poor fit, but better than than 2+2 solutions (the best fit regions are somewhat different, so that MiniBoone could discriminate). If instead MiniBoone will find no nu_mu --> nu_e signal, we will have a hint for CPT violation. Already now, unlike sterile neutrinos, CPT-violating neutrino masses can nicely accomodate all safe and unsafe data. We study how much CPT must be conserved according to atmospheric and K2K data and list which CPT-violating signals could be discovered by forthcoming solar and long-baseline experiments.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
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spelling cern-5351602023-03-14T18:20:54Zdoi:10.1016/S0370-2693(02)02042-7http://cds.cern.ch/record/535160engStrumia, AlessandroInterpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?Particle Physics - PhenomenologyWe first study how sterile neutrinos can fit the 5sigma bar-nu_mu --> bar-nu_e LSND anomaly: 3+1 solutions give a poor fit, but better than than 2+2 solutions (the best fit regions are somewhat different, so that MiniBoone could discriminate). If instead MiniBoone will find no nu_mu --> nu_e signal, we will have a hint for CPT violation. Already now, unlike sterile neutrinos, CPT-violating neutrino masses can nicely accomodate all safe and unsafe data. We study how much CPT must be conserved according to atmospheric and K2K data and list which CPT-violating signals could be discovered by forthcoming solar and long-baseline experiments.We first study how sterile neutrinos can fit the 5 σ ν ̄ μ → ν ̄ e LSND anomaly: 2+2 solutions are strongly disfavoured by solar and atmospheric data, while 3+1 solutions can still give a poor fit (for a specific range of oscillation parameters, to be tested by MiniBooNE). If MiniBooNE will see no ν μ → ν e transitions, we will have a hint for CPT violation. Already now, unlike sterile neutrinos, CPT-violating neutrino masses can accommodate all safe and unsafe data. We study how much CPT must be conserved according to atmospheric and K2K data and list which CPT-violating signals could be discovered by forthcoming solar and long-baseline experiments.We first study how sterile neutrinos can fit the 5sigma bar-nu_mu --> bar-nu_e LSND anomaly: 2+2 solutions are strongly disfavoured by solar and atmospheric data, while 3+1 solutions can still give a poor fit (for a specific range of oscillation parameters, to be tested by MiniBooNE). If instead MiniBoone will find no nu_mu --> nu_e signal, we will have a hint for CPT violation. Already now, unlike sterile neutrinos, CPT-violating neutrino masses can nicely accomodate all safe and unsafe data. We study how much CPT must be conserved according to atmospheric and K2K data and list which CPT-violating signals could be discovered by forthcoming solar and long-baseline experiments.hep-ph/0201134IFUP-TH-2002-3CERN-TH-2002-3CERN-TH-2002-003IFUP-TH-2002-3oai:cds.cern.ch:5351602002-01-15
spellingShingle Particle Physics - Phenomenology
Strumia, Alessandro
Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
title Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
title_full Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
title_fullStr Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
title_full_unstemmed Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
title_short Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
title_sort interpreting the lsnd anomaly: sterile neutrinos or cpt-violation or...?
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(02)02042-7
http://cds.cern.ch/record/535160
work_keys_str_mv AT strumiaalessandro interpretingthelsndanomalysterileneutrinosorcptviolationor

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