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A hybrid setup for fundamental unknowns in neutrino oscillations using T2HK (ν) and μ-DAR (ν¯)

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Title
A hybrid setup for fundamental unknowns in neutrino oscillations using T2HK (ν) and μ-DAR (ν¯)
Author(s)
Sanjib Kumar Agarwalla; Monojit Ghosh; Sushant K. Raut
Publication Date
2017-05
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v.2017, no.5, pp.115
Publisher
SPRINGER
Abstract
Neutrino mass hierarchy, CP-violation, and octant of θ23 are the fundamental unknowns in neutrino oscillations. In order to address all these three unknowns, we study the physics reach of a setup, where we replace the antineutrino run of T2HK with antineutrinos from muon decay at rest (μ-DAR). This approach has the advantages of having higher statistics in both neutrino and antineutrino modes, and lower beam-on backgrounds for antineutrino run with reduced systematics. We find that a hybrid setup consisting of T2HK (ν) and μ-DAR (ν¯) in conjunction with full exposure from T2K and NOνA can resolve the issue of mass hierarchy at greater than 3σ C.L. irrespective of the choices of hierarchy, δCP, and θ23. This hybrid setup can also establish the CP-violation at 5σ C.L. for ∼ 55% choices of δCP, whereas the same for conventional T2HK (ν+ν¯) setup along with T2K and NOνA is around 30%. As far as the octant of θ23 is concerned, this hybrid setup can exclude the wrong octant at 5σ C.L. if θ23 is at least 3° away from maximal mixing for any δCP. © 2017, The Author(s)
URI
https://pr.ibs.re.kr/handle/8788114/3625
DOI
10.1007/JHEP05(2017)115
ISSN
1029-8479
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
A hybrid setup for fundamental unknowns in neutrino oscillations using T2HK (ν) and μ-DAR (ν¯)_슈샨트.pdfDownload

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