Parity-doublet representation of Majorana fermions and neutron oscillation

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http://hdl.handle.net/10138/183456

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Fujikawa , K & Tureanu , A 2016 , ' Parity-doublet representation of Majorana fermions and neutron oscillation ' Physical Review D , vol. 94 , no. 11 , 115009 . DOI: 10.1103/PhysRevD.94.115009

Title: Parity-doublet representation of Majorana fermions and neutron oscillation
Author: Fujikawa, Kazuo; Tureanu, Anca
Contributor: University of Helsinki, Particle Physics and Astrophysics
University of Helsinki, Particle Physics and Astrophysics
Date: 2016-12-02
Language: eng
Number of pages: 6
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/183456
Abstract: We present a parity-doublet theorem for the representation of the intrinsic parity of Majorana fermions, which is expected to be useful also in condensed matter physics, and it is illustrated to provide a criterion of neutron-antineutron oscillation in a Bardeen-Cooper-Schrieffer type of effective theory with Delta B = 2 baryon number-violating terms. The CP violation in the present effective theory causes no direct CP-violating effects in the oscillation itself, which is demonstrated by the exact solution, although it influences the neutron electric dipole moment in the leading order of small Delta B = 2 parameters. An analog of Bogoliubov transformation, which preserves P and CP, is crucial in the analysis.
Subject: NEUTRINOS
MODEL
114 Physical sciences
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