Gauged B-x(i)L origin of R parity and its implications

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Gauged B - L is a popular candidate for the origin of the conservation of R parity, i.e. R = (-)(3B+L+2j), in supersymmetry, but it fails to forbid the effective dimension-five terms arising from the superfield combinations Q Q Q L, u(c)u(c)d(c)e(c), and u(c)d(c)d(c)N(c), which allow the proton to decay. Changing it to B - x(i)L, where x(e) + x(mu) + x(tau) = 3 (with x(i) not equal 1) for the three families, would forbid these terms while still serving as a gauge origin of R parity. We show how this is achieved in two minimal models with realistic neutrino mass matrices, and discuss their phenomenological implications. (c) 2010 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE BV
Issue Date
2010-05
Language
English
Article Type
Article
Keywords

BARYON; CONSERVATION; SYMMETRIES; NUMBER

Citation

PHYSICS LETTERS B, v.688, no.4-5, pp.319 - 322

ISSN
0370-2693
DOI
10.1016/j.physletb.2010.04.032
URI
http://hdl.handle.net/10203/226495
Appears in Collection
PH-Journal Papers(저널논문)
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