Testing matter effects in propagation of atmospheric and long-baseline neutrinos
Entity
UAM. Departamento de Física TeóricaPublisher
Springer VerlagDate
2011-05-16Citation
10.1007/JHEP05(2011)075
Journal of High Energy Physics 2011.5 (2011): 075
ISSN
1029-8479 (online); 1126-6708 (print)DOI
10.1007/JHEP05(2011)075Funded by
This work is supported by Spanish MICINN grants 2007-66665-C02-01, FPA-2009-08958, FPA-2009-09017 and consolider-ingenio 2010 grant CSD-2008-0037, by CUR Generalitat de Catalunya grant 2009SGR502, by Comunidad Autónoma de Madrid through the HEPHACOS project S2009/ESP-1473, by USA-NSF grant PHY-0969739 and by EU grant EURONUProject
Comunidad de Madrid. S2009/ESP-1473/HEPHACOS; info:eu-repo/grantAgreement/EC/FP7/212372Editor's Version
http://dx.doi.org/10.1063/10.1007/JHEP05(2011)075Subjects
Beyond standard model; Neutrino physics; Solar and atmospheric neutrinos; FísicaNote
Journal of High Energy Physics 2011.5 (2011): 075 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)Rights
© SISSA 2011Abstract
We quantify our current knowledge of the size and flavor structure of the matter effects in the evolution of atmospheric and long-baseline neutrinos based solely on the analysis of the corresponding neutrino data. To this aim we generalize the matter potential of the Standard Model by rescaling its strength, rotating it away from the ee sector, and rephasing it with respect to the vacuum term. This phenomenological parametrization can be easily translated in terms of non-standard neutrino interactions in matter. We show that in the most general case, the strength of the potential cannot be determined solely by atmospheric and long-baseline data. However its flavor composition is very much constrained and the present determination of the neutrino masses and mixing is robust under its presence. We also present an update of the constraints arising from this analysis in the particular case in which no potential is present in the eμ and eτ sectors. Finally we quantify to what degree in this scenario it is possible to alleviate the tension between the oscillation results for neutrinos and antineutrinos in the MINOS experiment and show the relevance of the high energy part of the spectrum measured at MINOS
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Google Scholar:Maltoni, Michele
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Salvado, Jordi
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González-García, María Concepción
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