DOE OSTI · 2576028
Search for ∆S = 2 nonleptonic hyperon decays Ω− → Σ0π− and Ω− → nK−
Abstract
Abstract Using (27.12 ± 0.14) × 10 8 ψ(3686) events collected by the BESIII detector at the center-of-mass energy of$$ \sqrt{s} $$ s = 3.686 GeV, we search for the first time for two nonleptonic hyperon decays that change strangeness by two units, Ω − → Σ 0 π − and Ω − →nK − . No significant signal is observed. The upper limits on their decay branching fractions are determined to be$$ \mathcal{B} $$ B (Ω − → Σ 0 π − )<5.4 × 10 −4 and$$ \mathcal{B} $$ B (Ω − →nK − )<2.4 × 10 −4 at the 90% confidence level.
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Ablikim, M., Achasov, M., Adlarson, P., Afedulidis, O., Ai, X., Aliberti, R., Amoroso, A., An, Q., Bai, Y., Bakina, O., Balossino, I., Ban, Y., Bao, H., Batozskaya, V., Begzsuren, K., Berger, N., Berlowski, M., Bertani, M., Bettoni, D., Bianchi, F., Bianco, E., Bortone, A., Boyko, I., Briere, R., Brueggemann, A., Cai, H., Cai, X., Calcaterra, A., Cao, G., Cao, N., Cetin, S., Chang, J., Che, G., Chelkov, G., Chen, C., Chen, Chao, Chen, G., Chen, H., Chen, M., Chen, S., Chen, T., Chen, X., Chen, Y., Chen, Z., Choi, S., Cibinetto, G., Cossio, F., Cui, J., Dai, H., Dai, J., Dbeyssi, A., de Boer, R., Dedovich, D., Deng, C., Deng, Z., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, B., Ding, X., Ding, Y., Dong, J., Dong, L., Dong, M., Dong, X., Du, M., Du, S., Duan, Y., Duan, Z., Egorov, P., Fan, Y., Fang, J., Fang, S., Fang, W., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C., Feng, J., Feng, Y., Fritsch, M., Fu, C., Fu, J., Fu, Y., Gao, H., Gao, X., Gao, Y., Gao, Yang, Garbolino, S., Garzia, I., Ge, L., Ge, P., Ge, Z., Geng, C., Gersabeck, E., Gilman, A., Goetzen, K.. 2024-05-01. Search for ∆S = 2 nonleptonic hyperon decays Ω− → Σ0π− and Ω− → nK−. https://doi.org/10.1007/jhep05(2024)141
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