TY - JOUR

T1 - Proton decay in a minimal SUSY SO(10) model for neutrino mixings

AU - Goh, H. S.

AU - Mohapatra, R. N.

AU - Nasri, S.

AU - Ng, Siew Phang

N1 - Funding Information:
This work is supported by the National Science Foundation Grant No. PHY-0099544. We like to thank K.S. Babu, Tony Mann, J.C. Pati, J. Schechter, G. Senjanović and K. Turzynski for useful discussions and comments.

PY - 2004/5/6

Y1 - 2004/5/6

N2 - A minimal renormalizable SUSY SO(10) model with B-L symmetry broken by 126 Higgs field has recently been shown to predict all neutrino mixings and the ratio Δm2ȯ/Δm2A in agreement with observations. Unlike models where B-L is broken by 16 Higgs, this model guarantees automatic R-parity conservation and hence a stable dark matter as well as the absence of dim=4 baryon violating operator without any additional symmetry assumptions. In this paper, we discuss the predictions of the model for proton decay induced at the GUT scale. We scan over the parameter space of the model allowed by neutrino data and find upper bounds on the partial lifetime for the modes τ(n→π0ν̄)= 2τ(p→π+ν̄)≤(5.7-13)×1032 yrs and τ(n→K0ν̄)≤2.97×1033 yrs for the average squark mass of a TeV and wino mass of 200 GeV, when the parameters satisfy the present lower limits on τ(p→K+ν̄) mode. These results can be used to test the model.

AB - A minimal renormalizable SUSY SO(10) model with B-L symmetry broken by 126 Higgs field has recently been shown to predict all neutrino mixings and the ratio Δm2ȯ/Δm2A in agreement with observations. Unlike models where B-L is broken by 16 Higgs, this model guarantees automatic R-parity conservation and hence a stable dark matter as well as the absence of dim=4 baryon violating operator without any additional symmetry assumptions. In this paper, we discuss the predictions of the model for proton decay induced at the GUT scale. We scan over the parameter space of the model allowed by neutrino data and find upper bounds on the partial lifetime for the modes τ(n→π0ν̄)= 2τ(p→π+ν̄)≤(5.7-13)×1032 yrs and τ(n→K0ν̄)≤2.97×1033 yrs for the average squark mass of a TeV and wino mass of 200 GeV, when the parameters satisfy the present lower limits on τ(p→K+ν̄) mode. These results can be used to test the model.

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U2 - 10.1016/j.physletb.2004.02.063

DO - 10.1016/j.physletb.2004.02.063

M3 - Article

AN - SCOPUS:1842688304

VL - 587

SP - 105

EP - 116

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1-2

ER -