We search for excited charmed baryons in the Λc+η system using a data sample corresponding to an integrated luminosity of 980 fb-1. The data were collected by the Belle detector at the KEKB e+e- asymmetric-energy collider. No significant signals are found in the Λc+η mass spectrum, including the known Λc(2880)+ and Λc(2940)+. Clear Λc(2880)+ and Λc(2940)+ signals are observed in the pD0 mass spectrum. We set upper limits at 90% credibility level on ratios of branching fractions of Λc(2880)+ and Λc(2940)+ decaying to Λc+η relative to ςc(2455)π of <0.13 for the Λc(2880)+ and <1.11 for the Λc(2940)+. We measure ratios of branching fractions of Λc(2880)+ and Λc(2940)+ decaying to pD0 relative to ςc(2455)π of 0.75±0.03(stat)±0.07(syst) for the Λc(2880)+ and 3.59±0.21(stat)±0.56(syst) for the Λc(2940)+.

Search for charmed baryons in the Λc+ η system and measurement of the branching fractions of Λc (2880)+ and Λc (2940)+ decaying to Λc+ η and pD0 relative to ςc (2455)π / Li, S.X., Shen, C.P., Adachi, I., Ahn, J.K., Aihara, H., Asner, D.M., Atmacan, H., Aushev, T., Ayad, R., Banerjee, S., Belous, K., Bennett, J., Bessner, M., Bilka, T., Biswas, D., Bodrov, D., Bozek, A., Bracko, M., Branchini, P., Browder, T.E., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 110:3(2024). [10.1103/PhysRevD.110.032021]

Search for charmed baryons in the Λc+ η system and measurement of the branching fractions of Λc (2880)+ and Λc (2940)+ decaying to Λc+ η and pD0 relative to ςc (2455)π

Campajola M.;De Nardo G.;Merola M.;Pardi S.;Russo Guido;
2024

Abstract

We search for excited charmed baryons in the Λc+η system using a data sample corresponding to an integrated luminosity of 980 fb-1. The data were collected by the Belle detector at the KEKB e+e- asymmetric-energy collider. No significant signals are found in the Λc+η mass spectrum, including the known Λc(2880)+ and Λc(2940)+. Clear Λc(2880)+ and Λc(2940)+ signals are observed in the pD0 mass spectrum. We set upper limits at 90% credibility level on ratios of branching fractions of Λc(2880)+ and Λc(2940)+ decaying to Λc+η relative to ςc(2455)π of <0.13 for the Λc(2880)+ and <1.11 for the Λc(2940)+. We measure ratios of branching fractions of Λc(2880)+ and Λc(2940)+ decaying to pD0 relative to ςc(2455)π of 0.75±0.03(stat)±0.07(syst) for the Λc(2880)+ and 3.59±0.21(stat)±0.56(syst) for the Λc(2940)+.
2024
Search for charmed baryons in the Λc+ η system and measurement of the branching fractions of Λc (2880)+ and Λc (2940)+ decaying to Λc+ η and pD0 relative to ςc (2455)π / Li, S.X., Shen, C.P., Adachi, I., Ahn, J.K., Aihara, H., Asner, D.M., Atmacan, H., Aushev, T., Ayad, R., Banerjee, S., Belous, K., Bennett, J., Bessner, M., Bilka, T., Biswas, D., Bodrov, D., Bozek, A., Bracko, M., Branchini, P., Browder, T.E., et al.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 110:3(2024). [10.1103/PhysRevD.110.032021]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/985083
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