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Observation of the rare decay $\Lambda_b^0 \to p \pi^- \mu^+ \mu^-$
The decay mode Λ0 b → pπ−μ+μ− is a b → d flavour changing neutral current transition and can therefore only occur at loop level in the Standard Model. In new physics models, new heavy particles can contribute and can significantly change the branching fraction of this process. The recent first obser...
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| Lenguaje: | eng |
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2017
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| Acceso en línea: | https://dx.doi.org/10.1393/ncc/i2017-17175-5 http://cds.cern.ch/record/2680996 |