Faculty and Student Publications
Document Type
Article
Publication Date
6-1-2021
Abstract
Using the entire data sample of 980 fb-1 integrated luminosity collected with the Belle detector at the KEKB asymmetric-energy e+e- collider, we present an amplitude analysis measuring the branching fractions of the Cabibbo-allowed, W-exchange resonant decay Ξc0→Ξ0φ(→K+K-) with a polarized φ and the nonresonant decay via a direct process Ξc0→Ξ0K+K-. We present these measurements, relative to the normalization mode Ξ-π+, and find branching ratios B(Ξc0→Ξ0φ(→K+K-))(BΞc0→Ξ-π+)=0.036±0.004(stat.)±0.002(syst.) and B(Ξc0→Ξ0K+K-)B(Ξc0→Ξ-π+)=0.039±0.004(stat.)±0.002(syst.), which suggest that only minor cusping peaks occur in the combinatorial background of ω∗-→Ξ0K- due to these Ξc0 decays.
Relational Format
journal article
Recommended Citation
McNeil, J. T., Yelton, J., Bennett, J., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Bessner, M., Bilka, T., Biswal, J., … The Belle Collaboration. (2021). Measurement of the resonant and nonresonant branching ratios in Ξ c 0 → Ξ 0 K + K −. Physical Review D, 103(11), 112002. https://doi.org/10.1103/PhysRevD.103.112002
DOI
10.1103/PhysRevD.103.112002
Accessibility Status
Searchable text