Measurement of the branching fractions of the singly Cabibbo-suppressed decays Λc+→pη and Λc+→pω

作者：Ablikim, M.; Achasov, M. N.; Adlarson, P.; Aliberti, R.; Amoroso, A.; An, M. R.; An, Q.; Bai, Y.; Bakina, O.; Balossino, I.; Ban, Y.; Batozskaya, V.; Begzsuren, K.; Berger, N.; Berlowski, M.; Bertani, M.; Bettoni, D.; Bianchi, F.; Bianco, E.; Bloms, J.; Bortone, A.; Boyko, I.; Briere, R. A.; Brueggemann, A.; Cai, H.; Cai, X.; Calcaterra, A.; Cao, G. F.; Cao, N.; Cetin, S. A.; Chang, J. F.; Chang, T. T.; Chang, W. L.; Che, G. R.; Chelkov, G.; Chen, C.; Chen, Chao; Chen, G.; Chen, H. S.

来源：JOURNAL OF HIGH ENERGY PHYSICS, 2023, (11): 137.

DOI：10.1007/JHEP11(2023)137

• Charm Physics
• e(+)-e(-) Experiments

Based on 4.5 fb(-1) e(+)e(-) collision data collected with BESIII detector at seven energy points between 4.600 and 4.699 GeV, the branching fractions for Lambda(+)(c)-> p eta and Lambda(+)(c)-> p omega were measured by means of single-tag method. The branching fractions of Lambda(+)(c)-> p eta and Lambda(+)(c)-> p omega are determined to be (1.57 +/- 0.11(stat) +/- 0.04(syst)) x 10(-3) and (1.11 +/- 0.20(stat) +/- 0.07(syst)) x 10(-3), with a statistical significance of greater than 10 sigma and 5.7 sigma, respectively.