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Effects of the scalar FCNC in $b\to sl^+l^-$ transitions and supersymmetry
High Energy Physics - Phenomenology · Submitted 4 Aug 2003
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim In supersymmetry the effects of the scalar flavour changing neutral currents are further constrained by the experimental lower limit on the $B^0_s$-$\bar B^0_s$ mass difference, so that most likely no detectable signal of the supersymmetry generated scalar flavour changing neutral currents in processes $B\to X_s\mu^+\mu^-$ and $B\to K\mu^+\mu^-$ is possible.
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The abstract, sentence by sentence
We investigate the potential effects of the scalar flavour changing neutral currents that are generated e.g. in supersymmetry with $\tan\beta\gg1$ in the $b\to sl^+l^-$ transitions. Using the experimental upper limit on $BR(B^0_s\to\mu^+\mu^-)$ we place stringent model independent constraints on the impact these currents may have on the rates $BR(B\to X_s\mu^+\mu^-)$ and $BR(B\to K\mu^+\mu^-)$. We find that in the first case, contrary to the claim made recently in the literature, the maximal potential effects are always smaller than the uncertainty of the Standard Model NNLO prediction, that is of order 5-15%. In the second case, the effects can be large but the experimental errors combined with the unsettled problems associated with the relevant formfactors do not allow for any firm conclusion about the detectability of a new physics signal in this process. In supersymmetry the effects of the scalar flavour changing neutral currents are further constrained by the experimental lower limit on the $B^0_s$-$\bar B^0_s$ mass difference, so that most likely no detectable signal of the supersymmetry generated scalar flavour changing neutral currents in processes $B\to X_s\mu^+\mu^-$ and $B\to K\mu^+\mu^-$ is possible.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We investigate the potential effects of the scalar flavour changing neutral currents that are generated e.g. in supersymmetry with $\tan\beta\gg1$ in the $b\to sl^+l^-$ transitions. | contribution 0.92 | 0.64 | 0.04 | hedged possibility 0.64 |
| s1 | Using the experimental upper limit on $BR(B^0_s\to\mu^+\mu^-)$ we place stringent model independent constraints on the impact these currents may have on the rates $BR(B\to X_s\mu^+\mu^-)$ and $BR(B\to K\mu^+\mu^-)$. | method 0.84 | 0.91 | 0.09 | asserted 0.96 |
| s2 | We find that in the first case, contrary to the claim made recently in the literature, the maximal potential effects are always smaller than the uncertainty of the Standard Model NNLO prediction, that is of order 5-15%. | result 1.00 | 0.95 | 0.26 | asserted 1.00 |
| s3 | In the second case, the effects can be large but the experimental errors combined with the unsettled problems associated with the relevant formfactors do not allow for any firm conclusion about the detectability of a new physics signal in this process. | result 0.86 | 0.77 | 0.09 | asserted 0.68 |
| s4 | In supersymmetry the effects of the scalar flavour changing neutral currents are further constrained by the experimental lower limit on the $B^0_s$-$\bar B^0_s$ mass difference, so that most likely no detectable signal of the supersymmetry generated scalar flavour changing neutral currents in processes $B\to X_s\mu^+\mu^-$ and $B\to K\mu^+\mu^-$ is possible. | result 0.66 | 0.69 | 0.71 | hedged possibility 0.98 |
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Original abstract
We investigate the potential effects of the scalar flavour changing neutral currents that are generated e.g. in supersymmetry with $\tan\beta\gg1$ in the $b\to sl^+l^-$ transitions. Using the experimental upper limit on $BR(B^0_s\to\mu^+\mu^-)$ we place stringent model independent constraints on the impact these currents may have on the rates $BR(B\to X_s\mu^+\mu^-)$ and $BR(B\to K\mu^+\mu^-)$. We find that in the first case, contrary to the claim made recently in the literature, the maximal potential effects are always smaller than the uncertainty of the Standard Model NNLO prediction, that is of order 5-15%. In the second case, the effects can be large but the experimental errors combined with the unsettled problems associated with the relevant formfactors do not allow for any firm conclusion about the detectability of a new physics signal in this process. In supersymmetry the effects of the scalar flavour changing neutral currents are further constrained by the experimental lower limit on the $B^0_s$-$\bar B^0_s$ mass difference, so that most likely no detectable signal of the supersymmetry generated scalar flavour changing neutral currents in processes $B\to X_s\mu^+\mu^-$ and $B\to K\mu^+\mu^-$ is possible.
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References
How the literature uses it
4 arXiv papers cite this in 4 sentences
Papers citing it · 2 sentences without a confident label
Cites it as support 1 paper
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In practice, these contributions are however bounded from above [ref] by the experimental constraints on $B_s →μ^+ μ^-$ and turn out to be subleading.
SUSY beyond minimal flavour violation · Inclusive $B →X_s ℓ^+ ℓ^-$ · 0.96
Cites it as background 1 paper
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In order to incorporate the experimental predictions of different physical observables in $B̅ →K̅^* μ^+ μ^-$ this decay has been studied in SM and in number of different NP scenarios [ref] where NP effects display themselves through modification in the Wilson coefficients as well as through the new operators.
Impact of $Z^{\prime}$ and UED parameters on different asymmetries in $B_{s} \to \phi \ell^{+} \ell^{-}$ decays · Introduction · 0.86
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