Probing the leptonic Dirac CP-violating phase in neutrino oscillation experiments
2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 87, no 5, 053006- p.Article in journal (Refereed) Published
The discovery of leptonic CP violation is one of the primary goals of next-generation neutrino oscillation experiments, which is feasible due to the recent measurement of a relatively large leptonic mixing angle theta(13). We suggest two new working observables Delta A(alpha beta)(m) equivalent to max[A(alpha beta)(CP)(delta) - min[A(alpha beta)(CP)(delta)] and Delta A(alpha beta)(CP)(delta) equivalent to A(alpha beta)(CP)(delta) - A(alpha beta)(CP)(0) to describe the CP-violating effects in long-baseline and atmospheric neutrino oscillation experiments. The former signifies the experimental sensitivity to the leptonic Dirac CP-violating phase delta and can be used to optimize the experimental setup, while the latter measures the intrinsic leptonic CP violation and can be used to extract delta directly from the experimental observations. Both analytical and numerical analyses are carried out to illustrate their main features. It turns out that an intense neutrino beam with sub-GeV energies and a baseline of a few 100 km may serve as an optimal experimental setup for probing leptonic CP violation.
Place, publisher, year, edition, pages
American Physical Society , 2013. Vol. 87, no 5, 053006- p.
IdentifiersURN: urn:nbn:se:kth:diva-120535DOI: 10.1103/PhysRevD.87.053006ISI: 000316108400004ScopusID: 2-s2.0-84875125082OAI: oai:DiVA.org:kth-120535DiVA: diva2:615648
FunderSwedish Research Council, 621-2011-3985
QC 201304112013-04-112013-04-112013-12-16Bibliographically approved