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Charm Physics Confronts High-$p_T$ Lepton Tails
We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to analyze the most relevant experimental data at low and high energies, we demonstrate a strikin...
Autores principales: | , , , |
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Lenguaje: | eng |
Publicado: |
2020
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/JHEP11(2020)080 http://cds.cern.ch/record/2714382 |
Sumario: | We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to analyze the most relevant experimental data at low and high energies, we demonstrate a striking complementarity between charm decays and high invariant mass lepton tails at the LHC. Interestingly enough, high-p$_{T}$ Drell-Yan data offer competitive constraints on most new physics scenarios. Furthermore, the full set of correlated constraints from K, π and τ decays imposed by SU(2)$_{L}$ gauge invariance is considered. The bounds from D$_{(s)}$ decays, high-p$_{T}$ lepton tails and SU(2)$_{L}$ relations chart the space of the SMEFT affecting semi(leptonic) charm flavor transitions. |
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