Evidence for the singly Cabibbo-suppressed decay and search for and decays at Belle

Han, X.*; Tanida, Kiyoshi ; Belle Collaboration*; 170 of others*

Using a data sample of 980 fb $^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy collider, we study for the first time the singly Cabibbo-suppressed decays $Omega^0_ctoXi^{-}pi^{+}$ and and the doubly Cabibbo-suppressed decay $Omega^0_cto Xi^- K^{+}$ . Evidence for an signal in the mode is reported with a significance of including systematic uncertainties. The ratio of branching fractions to the normalization mode is measured to be ${cal B}(Omega_{c}^{0} to Xi^{-} pi ^{+} )/{cal B}(Omega_c^0to Omega^-pi^+)=0.253pm 0.053({rm stat.})pm 0.030({rm syst.}).$ No significant signals of and modes are found. The upper limits at confidence level on ratios of branching fractions are determined to be ${cal B}(Omega_{c}^{0} to Xi^{-} K ^{+})/{cal B}(Omega_c^0to Omega^-pi^+) < 0.070$ and ${cal B}(Omega_{c}^{0} to Omega^{-}K^{+})/{cal B}(Omega_c^0to Omega^-pi^+) < 0.29.$

Language	:	English
Journal	:	Journal of High Energy Physics (Internet)
Volume	:	2023
Number	:	1
Pages	:	p.55_1 - 55_12
Publication Year/Month	:	2023/01
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Paper URL	:	https://doi.org/10.1007/JHEP01(2023)055
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Registration No. : AA20240719
JAEA Abstracts No. : 53000274
Paper Submission No. : 29060

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