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arXiv · hep-ph/9712245

New constraints on R-parity violation from K and B systems

Gautam Bhattacharyya·Amitava Raychaudhuri
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Abstract

We have derived new upper limits on several products (two at a time) of lepton number violating $λ'$-type couplings from the consideration of $ΔS = 2$ and $ΔB = 2$ box graphs. Each box contains one scalar lepton and one W-boson or one charged-Higgs-boson as internal lines. Most of these bounds are more stringent than previously obtained. Some of these product couplings drive $K_L$ (and some other $B_d$) decays to two charged leptons at enhanced rates. Some of them can explain the rare $K^+ \to π^+ ν\barν$ event recently observed at BNL.

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Gautam Bhattacharyya, Amitava Raychaudhuri. 1998-04-13. New constraints on R-parity violation from K and B systems. https://doi.org/10.1103/physrevd.57.3837

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