By analyzing e+e− collision data taken at center-of-mass energies s between 4.600 and 4.699 GeV with the BESIII detector at the BEPCII collider, corresponding to an integrated luminosity of 4.5 fb−1, we study the hadronic decays Λc+→Σ+η and Λc+→Σ+η′ using the single-tag method. The branching fraction ratio of Λc+→Σ+η relative to Λc+→Σ+π0 is determined to be 0.305 ± 0.046stat.± 0.007syst., and that of Λc+→Σ+η′ relative to Λc+→Σ+ω is 0.336 ± 0.094stat± 0.037syst. The ratio of BΛc+→Σ+η′BΛc+→Σ+η is determined to be 1.73 ± 0.22stat.± 0.16syst.. These results enrich our knowledge of charmed baryon decays.

Measurement of branching fractions of $$ {\Lambda}_c^{+} $$ decays to Σ+η and Σ+η′

Amoroso, A.;Bianchi, F.;Bortone, A.;Destefanis, M.;De Mori, F.;Greco, M.;Maggiora, M.;Marcello, S.;Sosio, S.;Spataro, S.;
2025-01-01

Abstract

By analyzing e+e− collision data taken at center-of-mass energies s between 4.600 and 4.699 GeV with the BESIII detector at the BEPCII collider, corresponding to an integrated luminosity of 4.5 fb−1, we study the hadronic decays Λc+→Σ+η and Λc+→Σ+η′ using the single-tag method. The branching fraction ratio of Λc+→Σ+η relative to Λc+→Σ+π0 is determined to be 0.305 ± 0.046stat.± 0.007syst., and that of Λc+→Σ+η′ relative to Λc+→Σ+ω is 0.336 ± 0.094stat± 0.037syst. The ratio of BΛc+→Σ+η′BΛc+→Σ+η is determined to be 1.73 ± 0.22stat.± 0.16syst.. These results enrich our knowledge of charmed baryon decays.
2025
2025
11
0
19
Branching fraction; Charm Physics; e; +; -e; −; Experiments
null, null; Ablikim, M.; Achasov, M. N.; Adlarson, P.; Afedulidis, O.; Ai, X. C.; Aliberti, R.; Amoroso, A.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2121100
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