Utilizing 4.5 fb(-1) of e(+)e(-) annihilation data collected at center-of-mass energies ranging from 4599.53 MeV to 4698.82 MeV by the BESIII detector at the BEPCII collider, we searched for singly Cabibbo-suppressed hadronic decays Lambda(+)(c) -> Sigma K-0(+)pi(0) and Lambda(+)(c) -> Sigma K-0(+)pi(+pi-) with a single-tag method. No significant signals were observed for both decays. The upper limits on the branching fractions at the 90% confidence level were determined to be 5.0 x 10-4 for Sigma K-0(+)pi(0) and 6.5 x 10(-4) for Lambda(+)(c) -> Sigma K-0(+)pi(+pi-).
Search for Cabibbo-suppressed decays Λ+c → Σ0K+π0 and Λ+c → Σ0K+π+π−
A. Amoroso;F. Bianchi;A. Bortone;M. Destefanis;F. De Mori;M. Greco;M. Maggiora;S. Marcello;S. Sosio;S. Spataro;
2025-01-01
Abstract
Utilizing 4.5 fb(-1) of e(+)e(-) annihilation data collected at center-of-mass energies ranging from 4599.53 MeV to 4698.82 MeV by the BESIII detector at the BEPCII collider, we searched for singly Cabibbo-suppressed hadronic decays Lambda(+)(c) -> Sigma K-0(+)pi(0) and Lambda(+)(c) -> Sigma K-0(+)pi(+pi-) with a single-tag method. No significant signals were observed for both decays. The upper limits on the branching fractions at the 90% confidence level were determined to be 5.0 x 10-4 for Sigma K-0(+)pi(0) and 6.5 x 10(-4) for Lambda(+)(c) -> Sigma K-0(+)pi(+pi-).
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