Leptonic CP violation search and the ambiguity of delta m(31)(2)
| dc.contributor.author | Koike, M. | en |
| dc.contributor.author | Okamura, Naotoshi | en |
| dc.contributor.author | Saito, M. | en |
| dc.contributor.author | Takeuchi, Tatsu | en |
| dc.contributor.department | Physics | en |
| dc.date.accessioned | 2016-10-18T23:57:59Z | en |
| dc.date.available | 2016-10-18T23:57:59Z | en |
| dc.date.issued | 2006-03-01 | en |
| dc.description.abstract | We consider a search for the CP-violating angle δ<sub>CP</sub> in long baseline neutrino oscillation experiments. We show that the subleading δ<sub>CP</sub>-dependent terms in the ν<sub>µ</sub> → ν<sub>e</sub> oscillation probability can be easily obscured by the ambiguity of the leading term which depends on |δm 2 31|. It is thus necessary to determine the value of δm<sub>31</sub><sup>2</sup> with a sufficient accuracy. The ν<sub>µ</sub> survival events, which can be accumulated simultaneously with the ν<sub>e</sub> appearance events, can serve for this purpose owing to its large statistics. Therefore, the combined analysis of ν<sub>e</sub> appearance and ν<sub>µ</sub> survival events is crucial to provide a restrictive constraint on δ<sub>CP</sub>. Taking a test experimental setup, we demonstrate in the δ<sub>CP</sub> -δm<sub>31</sub><sup>2</sup> plane that the analysis of ν<sub>e</sub> appearance events leads to less restrictive constraints on the value of δ<sub>CP</sub> due to the ambiguity of δm<sub>31</sub><sup>2</sup> and that the combined analysis efficiently improves the constraints. | en |
| dc.description.version | Published version | en |
| dc.format.extent | 9 pages | en |
| dc.identifier.doi | https://doi.org/10.1103/PhysRevD.73.053010 | en |
| dc.identifier.issn | 1550-7998 | en |
| dc.identifier.issue | 5 | en |
| dc.identifier.uri | http://hdl.handle.net/10919/73282 | en |
| dc.identifier.volume | 73 | en |
| dc.language.iso | en | en |
| dc.publisher | American Physical Society | en |
| dc.relation.uri | http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000236465800029&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1 | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject | Astronomy & Astrophysics | en |
| dc.subject | Physics, Particles & Fields | en |
| dc.subject | Physics | en |
| dc.subject | SOLAR-NEUTRINO OBSERVATIONS | en |
| dc.subject | LONG-BASE-LINE | en |
| dc.subject | SUPERBEAMS | en |
| dc.subject | OSCILLATIONS | en |
| dc.subject | DETECTOR | en |
| dc.subject | REACTOR | en |
| dc.title | Leptonic CP violation search and the ambiguity of delta m(31)(2) | en |
| dc.title.serial | Physical Review D | en |
| dc.type | Article - Refereed | en |
| pubs.organisational-group | /Virginia Tech | en |
| pubs.organisational-group | /Virginia Tech/All T&R Faculty | en |
| pubs.organisational-group | /Virginia Tech/Science | en |
| pubs.organisational-group | /Virginia Tech/Science/COS T&R Faculty | en |
| pubs.organisational-group | /Virginia Tech/Science/Physics | en |