Search for Baryon-Number-Violating Processes in
B−
Decays to the
Ξ¯c0Λ¯c−
Final State
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Published:2024-08-15
Issue:7
Volume:133
Page:
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ISSN:0031-9007
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Container-title:Physical Review Letters
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language:en
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Short-container-title:Phys. Rev. Lett.
Author:
Gu T.ORCID, Savinov V.ORCID, Adachi I.ORCID, Aihara H.ORCID, Asner D. M.ORCID, Atmacan H.ORCID, Aushev T.ORCID, Ayad R.ORCID, Banerjee Sw.ORCID, Belous K.ORCID, Bennett J.ORCID, Bessner M.ORCID, Bhardwaj V.ORCID, Bhuyan B.ORCID, Biswas D.ORCID, Bobrov A.ORCID, Bodrov D.ORCID, Borah J.ORCID, Bozek A.ORCID, Bračko M.ORCID, Branchini P.ORCID, Browder T. E.ORCID, Budano A.ORCID, Campajola M.ORCID, Červenkov D.ORCID, Chang M.-C.ORCID, Chang P.ORCID, Cheon B. G.ORCID, Chilikin K.ORCID, Cho K.ORCID, Choi S.-K.ORCID, Choi Y.ORCID, Choudhury S.ORCID, Das S.ORCID, De Nardo G.ORCID, De Pietro G.ORCID, Dhamija R.ORCID, Di Capua F.ORCID, Dingfelder J.ORCID, Doležal Z.ORCID, Dong T. V.ORCID, Dubey S.ORCID, Ecker P.ORCID, Ferber T.ORCID, Ferlewicz D.ORCID, Fulsom B. G.ORCID, Gaur V.ORCID, Giri A.ORCID, Goldenzweig P.ORCID, Graziani E.ORCID, Guan Y.ORCID, Gudkova K.ORCID, Hadjivasiliou C.ORCID, Hayasaka K.ORCID, Hayashii H.ORCID, Hedges M. T.ORCID, Herrmann D.ORCID, Hou W.-S.ORCID, Hsu C.-L.ORCID, Ipsita N.ORCID, Ishikawa A.ORCID, Itoh R.ORCID, Iwasaki M.ORCID, Jacobs W. W.ORCID, Jia S.ORCID, Jin Y.ORCID, Joo K. K.ORCID, Kawasaki T.ORCID, Kiesling C.ORCID, Kim C. H.ORCID, Kim D. Y.ORCID, Kim K.-H.ORCID, Kim Y. J.ORCID, Kodyš P.ORCID, Korobov A.ORCID, Korpar S.ORCID, Kovalenko E.ORCID, Križan P.ORCID, Krokovny P.ORCID, Kuhr T.ORCID, Kumara K.ORCID, Kumita T.ORCID, Kwon Y.-J.ORCID, Lai Y.-T.ORCID, Lee S. C.ORCID, Levit D.ORCID, Li L. K.ORCID, Li Y. B.ORCID, Li Gioi L.ORCID, Liventsev D.ORCID, Masuda M.ORCID, Matsuda T.ORCID, Maurya S. K.ORCID, Meier F.ORCID, Merola M.ORCID, Metzner F.ORCID, Miyabayashi K.ORCID, Mizuk R.ORCID, Mohanty G. B.ORCID, Mussa R.ORCID, Nakamura I.ORCID, Nakao M.ORCID, Natkaniec Z.ORCID, Natochii A.ORCID, Nayak L.ORCID, Nayak M.ORCID, Niiyama M.ORCID, Nishida S.ORCID, Ogawa S.ORCID, Pakhlova G.ORCID, Pardi S.ORCID, Park H.ORCID, Park J.ORCID, Park S.-H.ORCID, Passeri A.ORCID, Patra S.ORCID, Paul S.ORCID, Pedlar T. K.ORCID, Pestotnik R.ORCID, Piilonen L. E.ORCID, Podobnik T.ORCID, Prencipe E.ORCID, Prim M. T.ORCID, Röhrken M.ORCID, Russo G.ORCID, Sandilya S.ORCID, Santelj L.ORCID, Schnell G.ORCID, Schwanda C.ORCID, Seino Y.ORCID, Senyo K.ORCID, Sevior M. E.ORCID, Shan W.ORCID, Sharma C.ORCID, Shiu J.-G.ORCID, Solovieva E.ORCID, Starič M.ORCID, Takizawa M.ORCID, Tamponi U.ORCID, Tanida K.ORCID, Tenchini F.ORCID, Tiwary R.ORCID, Trabelsi K.ORCID, Uchida M.ORCID, Unno Y.ORCID, Uno S.ORCID, Usov Y.ORCID, Vahsen S. E.ORCID, Varvell K. E.ORCID, Vinokurova A.ORCID, Wang E.ORCID, Wang M.-Z.ORCID, Wang X. L.ORCID, Watanuki S.ORCID, Won E.ORCID, Xu X.ORCID, Yabsley B. D.ORCID, Yan W.ORCID, Yang S. B.ORCID, Yuan L.ORCID, Zhang Z. P.ORCID, Zhilich V.ORCID, Zhukova V.ORCID,
Abstract
We report the results of the first search for B− decays to the Ξ¯c0Λ¯c− final state using 711 fb−1 of data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The results are interpreted in terms of both direct baryon-number-violating B− decay and Ξc0−Ξ¯c0 oscillations which follow the standard model decay B−→Ξc0Λ¯c−. We observe no evidence for baryon number violation and set the 95% confidence-level upper limits on the ratio of baryon-number-violating and standard model branching fractions B(B−→Ξ¯c0Λ¯c−)/B(B−→Ξc0Λ¯c−) to be <2.7% and on the effective angular frequency of mixing ω in Ξc0−Ξ¯c0 oscillations to be <0.76 ps−1 (equivalent to τmix>1.3 ps).
Published by the American Physical Society
2024
Funder
Ministry of Education, Culture, Sports, Science and Technology Japan Society for the Promotion of Science Nagoya University Australian Research Council Bundesministerium für Bildung, Wissenschaft und Forschung Austrian Science Fund National Natural Science Foundation of China Key Research Program of Frontier Science, Chinese Academy of Sciences Natural Science Foundation of Shandong Province Ministerstvo Školství, Mládeže a Tělovýchovy Grantová Agentura České Republiky H2020 European Research Council Carl-Zeiss-Stiftung Volkswagen Foundation Department of Atomic Energy, Government of India Department of Science and Technology, Ministry of Science and Technology, India Istituto Nazionale di Fisica Nucleare Sezione di Padova National Research Foundation of Korea Korea Institute of Science and Technology Information Korea Research Environment Open Network Ministerstwo Edukacji i Nauki Narodowe Centrum Nauki Ministry of Science and Higher Education of the Russian Federation National Research University Higher School of Economics University of Tabuk Javna Agencija za Raziskovalno Dejavnost RS Ikerbasque, Basque Foundation for Science Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung Ministry of Education Ministry of Science and Technology, Taiwan U.S. Department of Energy National Science Foundation High Energy Accelerator Research Organization Pacific Northwest National Laboratory Environmental Molecular Sciences Laboratory National Institute of Informatics Excellence Cluster Universe Radiation Science Research Institute Foreign Large-size Research Facility Application Supporting project GLORIAD Science Information NETwork 6
Publisher
American Physical Society (APS)
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