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Radiative corrections to the leptonic Dirac CP-violating phase
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.ORCID iD: 0000-0002-3525-8349
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2013 (English)In: Physical Review D, ISSN 1550-7998, Vol. 87, no 1, 013012- p.Article in journal (Refereed) Published
Abstract [en]

Since the smallest leptonic mixing angle theta(13) has been measured to be relatively large, it is quite promising to constrain or determine the leptonic Dirac CP-violating phase delta in future neutrino oscillation experiments. Given some typical values of delta = pi/2, pi, and 3 pi/2 at the low energy scale, as well as current experimental results of the other neutrino parameters, we perform a systematic study of radiative corrections to delta by using the one-loop renormalization group equations in the minimal supersymmetric standard model and the universal extra-dimensional model. It turns out that delta is rather stable against radiative corrections in both models, except for the minimal supersymmetric standard model with a very large value of tan beta. Both cases of Majorana and Dirac neutrinos are discussed. In addition, we use the preliminary indication of delta = (1.08(-0.31)(+0.28))pi or delta = (1.67(-0.77)(+0.37))pi from the latest global-fit analyses of data from neutrino oscillation experiments to illustrate how it will be modified by radiative corrections.

Place, publisher, year, edition, pages
American Physical Society , 2013. Vol. 87, no 1, 013012- p.
Keyword [en]
Neutrino Mass Operator, Renormalization-Group Equations, Prediction, Parameters, Model
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-119048DOI: 10.1103/PhysRevD.87.013012ISI: 000314229300003OAI: diva2:609400
Swedish Research Council, 621-2011-3985

QC 20130305

Available from: 2013-03-05 Created: 2013-03-05 Last updated: 2013-12-16Bibliographically approved

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