Observable N-N Oscillation in High Scale Seesaw Models

Journal Article · Fri Feb 17 04:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.96.0· OSTI ID:20778605

Dutta, Bhaskar; Mimura, Yukihiro ^[1]; Mohapatra, R N ^[2]

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1. Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)
2. Department of Physics and Center for String and Particle Theory, University of Maryland, College Park, Maryland 20742 (United States)

We discuss a realistic high scale (v{sub B-L}{approx}10{sup 12} GeV) supersymmetric seesaw model based on the gauge group SU(2){sub L}xSU(2){sub R}xSU(4){sub c} where neutron-antineutron oscillation can be in the observable range. This is contrary to the naive dimensional arguments which say that {tau}{sub N-N}{proportional_to}v{sub B-L}{sup 5} and should therefore be unobservable for seesaw scale v{sub B-L}{>=}10{sup 5} GeV. Two reasons for this enhancement are (i) accidental symmetries which keep some of the diquark Higgs masses at the weak scale and (ii) a new supersymmetric contribution from a lower dimensional operator. The net result is that {tau}{sub N-N}{proportional_to}v{sub B-L}{sup 2}v{sub wk}{sup 3} rather than v{sub B-L}{sup 5}. The model also can explain the origin of matter via the leptogenesis mechanism and predicts light diquark states which can be produced at LHC.

• OSTI ID: 20778605
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 96; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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EEV RANGE
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INTERMEDIATE BOSONS
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RESONANCE PARTICLES
SU-2 GROUPS
SUPERSYMMETRY
UNIFIED-FIELD THEORIES