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- W3147442887 abstract "We report measurements of the properties of the $D_{sJ}^+(2317)$ and $D_{sJ}^+(2457)$ resonances produced in continuum $e^+ e^-$ annihilation near $sqrt{s}=10.6 mathrm{GeV}$. The analysis is based on an $86.9 mathrm{fb^{-1}}$ data sample collected %at and 60 MeV below the $Upsilon(4S)$ resonance with with the Belle detector at KEKB. We determine the masses to be $M(D_{sJ}^+(2317)) = 2317.2 pm 0.5(mathrm{stat}) pm 0.9(mathrm{syst}) mathrm{MeV}/c^2$ and $M(D_{sJ}^+(2457))=2456.5 pm 1.3(mathrm{stat}) pm 1.3(mathrm{syst}) mathrm{MeV}/c^2$. We observe the radiative decay mode $D_{sJ}^+(2457) to D_s^+ gamma$ and the dipion decay mode $D_{sJ}^+(2457) to D_s^+ pi^+ pi^-$, and determine their branching fractions. No corresponding decays are observed for the $D_{sJ}(2317)$ state. These results are consistent with the spin-parity assignments of $0^+$ for the $D_{sJ}(2317)$ and $1^+$ for the $D_{sJ}(2457)$." @default.
- W3147442887 created "2021-04-13" @default.
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