Capabilities of long-baseline experiments in the presence of a sterile neutrino View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2016-11-21

AUTHORS

Debajyoti Dutta, Raj Gandhi, Boris Kayser, Mehedi Masud, Suprabh Prakash

ABSTRACT

Assuming that there is a sterile neutrino, we ask what then is the ability of long-baseline experiments to i) establish that neutrino oscillation violates CP, ii) determine the three-neutrino mass ordering, and iii) determine which CP-violating phase or phases are the cause of any CP violation that may be observed. We find that the ability to establish CP violation and to determine the mass ordering could be very substantial. However, the effects of the sterile neutrino could be quite large, and it might prove very difficult to determine which phase is responsible for an observed CP violation. We explain why a sterile neutrino changes the long-baseline sensitivities to CP violation and to the mass ordering in the ways that it does. We note that long-baseline experiments can probe the presence of sterile neutrinos in a way that is different from, and complementary to, the probes of short-baseline experiments. We explore the question of how large sterile-active mixing angles need to be before long-baseline experiments can detect their effects, or how small they need to be before the interpretation of these experiments can safely disregard the possible existence of sterile neutrinos. More... »

PAGES

122

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URI

http://scigraph.springernature.com/pub.10.1007/jhep11(2016)122

DOI

http://dx.doi.org/10.1007/jhep11(2016)122

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1054508104


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