Using an eþe− 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 B(D+s → π+π+π−X) = (32.81pm 0.35stat pm 0.63syst)%. In this measurement the charged pions from K0S meson decays are excluded. The partial branching fractions of D+s → π+π+π−X are also measured as a function of the π+π+π− invariant mass.
Measurement of the absolute branching fraction of the inclusive decay Ds+ → π+ π+ π− X
I. Garzia;M. Scodeggio;
2023
Abstract
Using an eþe− 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 B(D+s → π+π+π−X) = (32.81pm 0.35stat pm 0.63syst)%. In this measurement the charged pions from K0S meson decays are excluded. The partial branching fractions of D+s → π+π+π−X are also measured as a function of the π+π+π− invariant mass.File in questo prodotto:
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