Correlating New Physics Effects in Semileptonic $\Delta C = 1$ and $\Delta S = 1$ Processes

Arman Korajac; Jernej Fesel Kamenik; Nejc Ko\v{s}nik; Svjetlana Fajfer

Correlating New Physics Effects in Semileptonic Delta C = 1 and Delta S = 1 Processes

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arxiv 2305.13851 v1 pith:ZKR5SVTA submitted 2023-05-23 hep-ph

Correlating New Physics Effects in Semileptonic Delta C = 1 and Delta S = 1 Processes

Svjetlana Fajfer , Jernej Fesel Kamenik , Arman Korajac , Nejc Ko\v{s}nik This is my paper

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keywords constraintsdecaydecaysdeltaeffectsphysicssemileptonicbeta

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We present constraints on the left-handed dimension-6 interactions that contribute to semileptonic and leptonic decays of $K$, $D$, pions and to nuclear beta decay. We employ the flavour covariant description of the effective couplings, identify universal CP phases of New Physics and derive constraints from decay rates and CP-odd quantities. As a result, we can predict the maximal effects of such flavoured NP in $D$ decays from stringent $K$ decay constraints and vice-versa.

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