Neutron-antineutron oscillation and baryonic majoron: low scale spontaneous baryon violation

被引：43
作者：
Berezhiani, Zurab [1 ,2 ]
机构：
[1] Univ Aquila, Dipartimento Sci Fis & Chim, Via Vetoio, I-67100 Laquila, Italy
[2] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67100 Laquila, Italy
来源：
EUROPEAN PHYSICAL JOURNAL C | 2016年 / 76卷 / 12期
关键词：
WEAK MIXING ANGLES; DOUBLE-BETA-DECAY; EXPERIMENTAL SEARCH; HORIZONTAL SYMMETRY; PARALLEL WORLD; CP-INVARIANCE; MATTER; UNIVERSE; NUMBER; MODEL;
D O I：
10.1140/epjc/s10052-016-4564-0
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We discuss the possibility that baryon number B is spontaneously broken at low scales, of the order of MeV or even smaller, inducing the neutron-antineutron oscillation at the experimentally accessible level. An associated Goldstone particle-baryonic majoron can have observable effects in neutron to antineutron transitions in nuclei or dense nuclear matter. By extending baryon number to an anomaly-free symmetry, the baryo-majoron can be identified with the ordinary majoron associated with the spontaneous breaking of lepton number, and it can have interesting implications for neutrinoless decay with the majoron emission. We also discuss the hypothesis that baryon number can be spontaneously broken by QCD itself via the six-quark condensates.
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页数：10
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