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Imprints of a light sterile neutrino at DUNE, T2HK, and T2HKK
KTH, Skolan för teknikvetenskap (SCI), Fysik. Harish-Chandra Research Institute, India.
2017 (Engelska)Ingår i: Physical Review D: covering particles, fields, gravitation, and cosmology, ISSN 2470-0010, E-ISSN 2470-0029, Vol. 96, nr 5, artikel-id 056026Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

We evaluate the impact of sterile neutrino oscillations in the so-called 3 + 1 scenario on the proposed long baseline experiment in USA and Japan. There are two proposals for the Japan experiment which are called T2HK and T2HKK. We show the impact of sterile neutrino oscillation parameters on the expected sensitivity of T2HK and T2HKK to mass hierarchy, CP violation and octant of theta(23) and compare it against that expected in the case of standard oscillations. We add the expected ten years data from DUNE and present the combined expected sensitivity of T2HKK + DUNE to the oscillation parameters. We do a full marginalization over the relevant parameter space and show the effect of the magnitude of the true sterile mixing angles on the physics reach of these experiments. We show that if one assumes that the source of CP violation is the standard CP phase alone in the test case, then it appears that the expected CP violation sensitivity decreases due to sterile neutrinos. However, if we give up this assumption, then the CP sensitivity could go in either direction. The impact on expected octant of theta(23) and mass hierarchy sensitivity is shown to depend on the magnitude of the sterile mixing angles in a nontrivial way.

Ort, förlag, år, upplaga, sidor
American Physical Society, 2017. Vol. 96, nr 5, artikel-id 056026
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:kth:diva-217212DOI: 10.1103/PhysRevD.96.056026ISI: 000411988800005Scopus ID: 2-s2.0-85031117380OAI: oai:DiVA.org:kth-217212DiVA, id: diva2:1154862
Forskningsfinansiär
EU, Horisont 2020, 690575; 674896
Anmärkning

QC 20171106

Tillgänglig från: 2017-11-06 Skapad: 2017-11-06 Senast uppdaterad: 2017-11-29Bibliografiskt granskad

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