TY - JOUR
T1 - Neutrino mixing anarchy
T2 - Alive and kicking
AU - de Gouvêa, André
AU - Murayama, Hitoshi
N1 - Funding Information:
The work of A.d.G. is sponsored in part by the DOE grant # DE-FG02-91ER40684 . The work of H.M. was supported in part by the U.S. DOE under Contract DE-AC03-76SF00098 , in part by the NSF under grant PHY-1002399 , the Grant-in-Aid for scientific research (C) 23540289 from Japan Society for Promotion of Science ( JSPS ), and in part by World Premier International Research Center Initiative (WPI), MEXT , Japan.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - Neutrino mixing anarchy is the hypothesis that the leptonic mixing matrix can be described as the result of a random draw from an unbiased distribution of unitary three-by-three matrices. In light of the very strong evidence for a nonzero sin2 2θ13, we show that the anarchy hypothesis is consistent with the choice made by the Nature - the probability of a more unusual choice is 41%. We revisit anarchy's ability to make predictions, concentrating on correlations - or lack thereof - among the different neutrino mixing parameters, especially sin2 θ13 and sin2 θ23. We also comment on anarchical expectations regarding the magnitude of CP-violation in the lepton sector, and potential connections to underlying flavor models or the landscape.
AB - Neutrino mixing anarchy is the hypothesis that the leptonic mixing matrix can be described as the result of a random draw from an unbiased distribution of unitary three-by-three matrices. In light of the very strong evidence for a nonzero sin2 2θ13, we show that the anarchy hypothesis is consistent with the choice made by the Nature - the probability of a more unusual choice is 41%. We revisit anarchy's ability to make predictions, concentrating on correlations - or lack thereof - among the different neutrino mixing parameters, especially sin2 θ13 and sin2 θ23. We also comment on anarchical expectations regarding the magnitude of CP-violation in the lepton sector, and potential connections to underlying flavor models or the landscape.
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U2 - 10.1016/j.physletb.2015.06.028
DO - 10.1016/j.physletb.2015.06.028
M3 - Article
AN - SCOPUS:84934912390
VL - 747
SP - 479
EP - 483
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -