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.

13 pages, 4 figures

References in corpus (12)

• Method for detector description transformation to Unity and application in BESIII
• Reweighting with Boosted Decision Trees
• Observation of the decay ${\Lambda }_b^0\to {\Lambda }_c^{+}{\tau }^{-}{\overline{\nu }}_{\tau }$
• Amplitude analysis and branching fraction measurement of $D_s^{+}\to K^{+}{K}^{-}{\pi }^{+}$
• Measurement of the Absolute Branching Fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to e^{+}{\nu }_e{\bar{\nu }}_{\tau }$
• Measurement of the absolute branching fractions for purely leptonic $D_s^{+}$ decays
• Measurement of the absolute branching fraction of inclusive semielectronic $D_s^{+}$ decays
• Measurement of the branching fraction of leptonic decay $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\pi }^{+}{\pi }^0{\bar{\nu }}_{\tau }$
• Study of the Decay $D_s^{+}\to {\pi }^{+}{\pi }^{+}{\pi }^{-}\eta$ and Observation of the W-annihilation Decay $D_s^{+}\to a_0(980{)}^{+}{\rho }^0$
• Amplitude analysis and branching fraction measurement of $D_s^{+}\to K^{-}{K}^{+}{\pi }^{+}{\pi }^0$
• Amplitude analysis of $D_s^{+}\to {\pi }^{+}{\pi }^{-}{\pi }^{+}$
• Amplitude analysis and branching fraction measurement of $D_s^{+}\to K^{-}{K}^{+}{\pi }^{+}{\pi }^{+}{\pi }^{-}$

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 $B_s^0\to \varphi {\mu }^{\pm }{\tau }^{\mp }$