Measurement of absolute branching fractions of D_s⁺ hadronic decays

2024/03/28 by BESIII Collaboration, Ablikim, M., М. Н. Ачасов +735 · 1 citation
Physics and Astronomy · Computer Science · #Particle physics theoretical and experimental studies #Computational Physics and Python Applications #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2403.19256

Abstract

Using e⁺ e^- collision data collected at the BESIII detector at center-of-mass energies between 4.128 and 4.226 GeV, corresponding to an integrated luminosity of 7.33~\rm fb^-1, we determine the absolute branching fractions of fifteen hadronic D_s⁺ decays with a double-tag technique. In particular, we make precise measurements of the branching fractions B(D_s⁺ → K⁺ K^- π⁺)=(5.49 ± 0.04 ± 0.07)%, B(D_s⁺ → K_S⁰ K⁺)=(1.50 ± 0.01 ± 0.01)% and B(D_s⁺ → K⁺ K^- π⁺ π⁰)=(5.50 ± 0.05 ± 0.11)%, where the first uncertainties are statistical and the second ones are systematic. The CP asymmetries in these decays are also measured and all are found to be compatible with zero.

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• Search for the charmonium semi-leptonic weak decay J/ψ→ D_s^-e⁺ν_e+c.c.

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