Measurement of the absolute branching fraction of the inclusive decay $D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}X$

Abstract

Using an $e^{+}{e}^{-}$ collision data sample with a total integrated luminosity of $3.19$ fb${}^{-1}$ collected with the BESIII detector at a center-of-mass energy of 4.178 GeV, the branching fraction of the inclusive decay of the $D_s^{+}$ meson to final states including at least three charged pions is measured for the first time to be $\mathcal{B}(D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}X)=(32.81\pm 0.35_{\mathrm{stat}}\pm 0.63_{\mathrm{syst}})\%$. In this measurement the charged pions from $K_S^0$ meson decays are excluded. The partial branching fractions of $D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}X$ are also measured as a function of the ${\pi }^{+}{\pi }^{+}{\pi }^{-}$ invariant mass.

arXiv comment13 pages, 4 figures

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Cited by in corpus (2)

• Evidence for $B^{-}\to D^{\ast \ast 0}{\tau }^{-}\overline{{\nu }_{\tau }}$ decays
• Search for the lepton-flavor violating decay $B_s^0\to \varphi {\mu }^{\pm }{\tau }^{\mp }$