Upper bound on all products of R-parity violating couplings λ‧ and λ″ from proton decay
Abstract
We prove that any product of R-parity violating couplings λ‧ (L-violating) and λ″ (B-violating) can be strongly restricted by proton decay data. For any pair λ‧ and λ″ the decay exists at least at one loop level. For squark masses below 1 TeV we find the conservative bounds |λ‧ · λ″| < 10 -9 in absence of squark flavor mixing, and |λ‧ · λ″| < 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.
- Publication:
-
Physics Letters B
- Pub Date:
- February 1996
- DOI:
- 10.1016/0370-2693(96)00495-9
- arXiv:
- arXiv:hep-ph/9601387
- Bibcode:
- 1996PhLB..380..317S
- Keywords:
-
- High Energy Physics - Phenomenology
- E-Print:
- LaTeX, 13 pages, 2 LaTeX figures