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Sushant Raut
순수물리이론 연구단
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Probing muonic charged current nonstandard interactions at decay-at-rest facilities in conjunction with T2HK

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Title
Probing muonic charged current nonstandard interactions at decay-at-rest facilities in conjunction with T2HK
Author(s)
Soumya C; Monojit Ghosh; Sushant K. Raut; Nita Sinha; Poonam Mehta
Publication Date
2020-03
Journal
PHYSICAL REVIEW D, v.101, no.5, pp.050009-1 - 050009-11
Publisher
AMER PHYSICAL SOC
Abstract
ⓒ2020 American Physical Society. The muon decay-at-rest (mu-DAR) facility provides us with an ideal platform to probe purely muonic charged-current nonstandard neutrino interactions (NSIs). We propose to probe this class of NSI effects using antineutrinos from a mu-DAR source in conjunction with neutrinos from the future Tokai to Kamioka superbeam experiment with megaton hyper Kamiokande detector (T2HK). Even though muonic NSIs are absent in neutrino production at T2HK, we show that our proposed hybrid setup comprising mu-DAR and T2HK helps in alleviating the parameter degeneracies that can arise in data. Analytic considerations reveal that the oscillation probability is most sensitive to the NSI parameter in the mu-e sector. For this parameter, we show that the mu-DAR setup can improve on the existing bounds down to around 0.01, especially when the data are combined with neutrino data from T2HK experiment due to the lifting of parameter degeneracies. The high precision with which mu-DAR can measure delta(CP) is shown to be robust even in the presence of the considered NSIs. Finally, we show that the combination of mu-DAR along with T2HK can also be used to put mild constraints on the NSI phase in the vicinity of the maximal CP-violating value, for the chosen benchmark value of epsilon(mu e)(mu e) = 0.01
URI
https://pr.ibs.re.kr/handle/8788114/7170
ISSN
2470-0010
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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