Eur. Phys. J. C (2015) 75: 394
https://doi.org/10.1140/epjc/s10052-015-3569-4

Regular Article - Theoretical Physics

Neutrino mass matrices with two vanishing elements/cofactors

¹ Department of Physics, School of Sciences, HNBG Central University, Srinagar, 246174, Uttarakhand, India
² Department of Physics, Himachal Pradesh University, Shimla, 171005, India

^* e-mail: dev@hnbgu.ac.in
^** e-mail: sdev@iucaa.ernet.in

Received: 17 June 2015
Accepted: 12 July 2015
Published online: 27 August 2015

Abstract

We study the phenomenological implications of the recent neutrino data for class B of two texture zeros and two vanishing cofactors for Majorana neutrinos in the flavor basis. We find that the classes () of two texture zeros and the classes () of two vanishing cofactors have similar predictions for neutrino oscillation parameters for the same mass hierarchy. Similar predictions for the classes () of two texture zeros and classes () of two vanishing cofactors are expected. However, a preference for a shift in the quadrant of the Dirac-type CP-violating phase () in contrast to the earlier analysis has been predicted for a relatively large value of the reactor neutrino mixing angle () for class B of two texture zeros and two vanishing cofactors for an inverted mass spectrum. No such shift in the quadrant of has been found for the normal mass spectrum.