Evidence for the decay Ωc0→π+Ω(2012)−→π+(K¯Ξ)−

descriptionPublicationkeyboard_double_arrow_right Article 10 Sep 2021 English Publisher:APSJournal:Physical ReviewFunded by:ARC | Discovery Projects - Gran..., ARC | ARC Future Fellowships - ..., UKRI | Digital Security by Desig... +3 projects

Authors: Li, Y.; Tang, S. S.; Jia, S.; Shen, C. P.; Adachi, I.; Aihara, H.; Al Said, S.; +185 Authors

Li, Y.; Tang, S. S.; Jia, S.; Shen, C. P.; Adachi, I.; 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.; Bozek, A.; Bračko, M.; Branchini, P.; Browder, T. E.; Budano, A.; Campajola, M.; Červenkov, D.; Chang, M.C.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, H. E.; Cho, K.; Cho, S.J.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Das, S.; Dash, N.; De Nardo, G.; De Pietro, G.; Di Capua, F.; Doležal, Z.; Dong, T. V.; Epifanov, D.; Ferber, T.; Fulsom, B. G.; Garg, R.; Gaur, V.; Giri, A.; Goldenzweig, P.; Golob, B.; Graziani, E.; Gu, T.; Gudkova, K.; Hadjivasiliou, C.; Halder, S.; Hayasaka, K.; Hayashii, H.; Hou, W.S.; Inami, K.; Ishikawa, A.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jang, E.J.; Jin, Y.; Joo, K. K.; Kang, K. H.; Karyan, G.; Kiesling, C.; Kim, C. H.; Kim, D. Y.; Kim, K.H.; Kim, S. H.; Kim, Y.K.; Kinoshita, K.; Kodyš, P.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Križan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kumar, M.; Kumara, K.; Kuzmin, A.; Kwon, Y.J.; Lalwani, K.; Laurenza, M.; Lee, S. C.; Li, C. H.; Li, L. K.; Li Gioi, L.; Libby, J.; Lieret, K.; Liventsev, D.; Masuda, M.; Matsuda, T.; Matvienko, D.; McNeil, J. T.; Merola, M.; Miyabayashi, K.; Mizuk, R.; Mohanty, G. B.; Mori, T.; Mussa, R.; Nakao, M.; Natkaniec, Z.; Natochii, A.; Nayak, L.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Nishimura, K.; Ono, H.; Onuki, Y.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, S.H.; Passeri, A.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Popov, V.; Prencipe, E.; Prim, M. T.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sangal, A.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Shapkin, M.; Sharma, C.; Shebalin, V.; Shiu, J.G.; Sokolov, A.; Solovieva, E.; Starič, M.; Stottler, Z. S.; Sumihama, M.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, K.; Uno, S.; Usov, Y.; Vahsen, S. E.; Van Tonder, R.; Varner, G.; Vinokurova, A.; Waheed, E.; Wang, C. H.; Wang, E.; Wang, M.Z.; Wang, P.; Watanuki, S.; Werbycka, O.; Won, E.; Yabsley, B. D.; Yan, W.; Yang, S. B.; Ye, H.; Yelton, J.; Yin, J. H.; Yuan, C. Z.; Yusa, Y.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.;

Evidence for the decay Ωc0→π+Ω(2012)−→π+(K¯Ξ)−

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Abstract

Using a data sample of 980 fb−1 collected with the Belle detector operating at the KEKB asymmetric-energy e+e− collider, we present evidence for the Ω(2012)− in the resonant substructure of Ωc0→π+(K¯Ξ)− ((K¯Ξ)−=K−Ξ0+K¯0Ξ−) decays. The significance of the Ω(2012)− signal is 4.2σ after considering the systematic uncertainties. The ratio of the branching fraction of Ωc0→π+Ω(2012)−→π+(K¯Ξ)− relative to that of Ωc0→π+Ω− is calculated to be 0.220±0.059(stat.)±0.035(syst.). The individual ratios of the branching fractions of the two isospin modes are also determined and found to be B(Ωc0→π+Ω(2012)−)×B(Ω(2012)−→K−Ξ0)/B(Ωc0→π+K−Ξ0)=(9.6±3.2(stat.) ±1.8(syst.))% and B(Ωc0→π+Ω(2012)−)×B(Ω(2012)−→K¯0Ξ−)/B(Ωc0→π+K¯0Ξ−)=(5.5±2.8(stat.) ±0.7(syst.))%.

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ARC| Discovery Projects - Grant ID: DP180102629, ARC| ARC Future Fellowships - Grant ID: FT130100303, UKRI| Digital Security by Design_LowRISC, ARC| Discovery Projects - Grant ID: DP170102204

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