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.
2023
Ablikim, M.; Achasov, M. N.; Adlarson, P.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Balos...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2530499
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