Nonstandard interactions jeopardizing the hierarchy sensitivity of DUNE

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dc.contributor.author Nath, Newton
dc.contributor.author Deepthi, K. N.
dc.contributor.author Goswami, Srubabati
dc.date.accessioned 2016-12-17T09:52:03Z
dc.date.available 2016-12-17T09:52:03Z
dc.date.issued 2016-12
dc.identifier.citation Deepthi, K. N.; Goswami, Srubabati and Nath, Newton, “Nonstandard interactions jeopardizing the hierarchy sensitivity of DUNE”, arXiv, Cornell University Library, DOI: arXiv:1612.00784, Dec. 2016. en_US
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/2565
dc.identifier.uri https://arxiv.org/abs/1612.00784
dc.description.abstract In this work we consider the effect of non-standard interactions (NSI) on the propagation of neutrinos through matter and how it affects the hierarchy sensitivity of the DUNE experiment. We emphasize on the special case when the diagonal NSI parameter ϵee=−1 and nullifies the standard matter effect. We show that, if in addition, there is maximal CP violation then this gives rise to an exact intrinsic hierarchy degeneracy, in the appearance channel, irrespective of the baseline and energy. Introduction of off-diagonal NSI parameter, ϵeτ, shifts the position of intrinsic degeneracy to a different ϵee. Moreover the unknown magnitude and phases of the off-diagonal NSI parameters can give additional degeneracies. Overall, given the current model independent limits on NSI parameters, no hierarchy sensitivity can be observed in the DUNE experiment if NSIs exist in nature. A signal of neutrino mass hierarchy at DUNE will therefore be able to rule out certain ranges of the NSI parameters. en_US
dc.description.statementofresponsibility by K. N. Deepthi, Srubabati Goswami and Newton Nath
dc.language.iso en_US en_US
dc.publisher Cornell University Library en_US
dc.title Nonstandard interactions jeopardizing the hierarchy sensitivity of DUNE en_US
dc.type Article en_US


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