Measurement of the absolute branching fraction of $D_{s0}^{\ast \pm }(2317)\to {\pi }^0{D}_s^{\pm }$

Abstract

The process $e^{+}{e}^{-}\to D_s^{\ast +}{D}_{s0}^{\ast -}(2317)+c.c.$ is observed for the first time with the data sample of 567~pb${}^{-1}$ collected with the BESIII detector operating at the BEPCII collider at a center-of-mass energy $\sqrt{s}=4.6$~GeV. The statistical significance of the $D_{s0}^{\ast -}(2317)$ signal is $5.8\sigma$ and the mass is measured to be ($2318.3\pm 1.2\pm 1.2$)~MeV/$c^2$. The absolute branching fraction $\mathcal{B}(D_{s0}^{\ast -}(2317)\to {\pi }^0{D}_s^{-})$ is measured as $1.00_{-0.14}^{+0.00}\pm 0.14$ for the first time. The uncertainties are statistical and systematic, respectively.

References in corpus (9)

• Dynamically Generated Open and Hidden Charm Meson Systems
• Dynamically generated 0^+ heavy mesons in a heavy chiral unitary approach
• Strong and radiative decays of the Ds0*(2317) meson in the DK-molecule picture
• Matching perturbative and Parton Shower corrections to Bhabha process at flavour factories
• $D_s$ mesons with $DK$ and $D^{\ast }K$ scattering near threshold
• Light meson mass dependence of the positive parity heavy-strange mesons
• Strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$
• Measurement of the $e^{+}{e}^{-}\to \eta J/\psi$ cross section and search for $e^{+}{e}^{-}\to {\pi }^{0}J/\psi$ at center-of-mass energies between 3.810 and 4.600~GeV
• Tetra-quark Systems in Heavy Mesons -- D_{s0}^+(2317), X(3872) and related --

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