Upper bound on all products of R-parity violating couplings $λ'$ and $λ''$ from proton decay

Details Upper bound on all products of R-parity violating couplings $λ'$ and $λ''$ from proton decay Upper bound on all products of R-parity violating couplings $λ'$ and $λ''$ from proton decay

1996-01-31

arxiv.org/abs/hep-ph/9601387v1

Phys.Lett. B380 (1996) 317-323

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 13 pages, 2 LaTeX figures

Scientific paper

10.1016/0370-2693(96)00495-9

We prove that {\em any} product of R-parity violating couplings $\lambda'$ (L-violating) and $\lambda''$ (B-violating) can be strongly restricted by proton decay data. For any pair $\lambda'$ and $\lambda''$ the decay exists at least at one loop level. For squark masses below 1 TeV we find the conservative bounds $|\lambda' \cdot \lambda''| < 10^{-9}$ in absence of squark flavor mixing, and $|\lambda' \cdot \lambda''| < 10^{-11}$ when this mixing is taken into account. We study the dependence of the bounds on the flavor basis in which R-parity breaking couplings are determined.

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