# $B\_{s,d}^0 \\to \\mu\\bar{\\mu}$ and $B\\to X\_s\\gamma$ in the R-parity violating MSSM

Source: [$B\_{s,d}^0 \\to \\mu\\bar{\\mu}$ and $B\\to X\_s\\gamma$ in the R-parity violating MSSM](<https://www.sota2.com/research/paper/68fa2ce61e209131ce854478>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-24T15:38:11.835Z

Authors: H. K. Dreiner, K. Nickel, F. Staub

Published: 2013-09-06T19:03:00.000Z

## Abstract

The recent measurements of $B\_s^0 \\to \\mu\\bar{\\mu}$ decay candidates at the LHC consistent with the standard model rate, and the improving upper limits for $B\_d^0 \\to \\mu\\bar{\\mu}$ can strongly constrain beyond the standard model physics. For example, in supersymmetric models with broken R-parity (RpV), they restrict the size of the new couplings. We use the combination of the public software packages SARAH and SPheno to derive new bounds on several combinations of R-parity violating couplings. We improve existing limits for the couplings which open tree-level decay channels and state new limits for combinations which induce loop contributions. This is the first study which performs a full one-loop analysis of these observables in the context of R-parity violation. It turns out that at one-loop despite the strong experimental limits only combinations of R-parity violating couplings are constrained which include third generation fermions. We compare our limits with those obtained via $B\\to X\_s\\gamma$ and discuss the differences.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/1309.1735>)

[PDF](<https://arxiv.org/pdf/1309.1735.pdf>)