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Measurements of the branching fractions of Λc+ →pη and Λc+ →pπ0 decays at Belle
- Authors
- Li, S.X.; Shen, C.P.; Adachi, I.; Ahn, J.K.; Aihara, H.; Asner, D.M.; Aushev, T.; Ayad, R.; Babu, V.; Bahinipati, S.; Behera, P.; Bennett, J.; Bernlochner, F.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bobrov, A.; Bozek, A.; Browder, T.E.; Campajola, M.; Cao, L.; Červenkov, D.; Chang, M.-C.; Chen, A.; Cheon, B.G.; Chilikin, K.; Cho, H.E.; Cho, K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Das, S.; Dash, N.; De, Nardo G.; Dhamija, R.; Di, Capua F.; DoleŽal, Z.; Dong, T.V.; Eidelman, S.; Epifanov, D.; Ferber, T.; Ferlewicz, D.; Fulsom, B.G.; Garg, R.; Gaur, V.; Garmash, A.; Giri, A.; Goldenzweig, P.; Golob, B.; Grzymkowska, O.; Gudkova, K.; Hadjivasiliou, C.; Hartbrich, O.; Hayasaka, K.; Hayashii, H.; Hedges, M.T.; Hou, W.-S.; Hsu, C.-L.; Iijima, T.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W.W.; Jang, E.-J.; Jia, S.; Jin, Y.; Joo, C.W.; Joo, K.K.; Kaliyar, A.B.; Kang, K.H.; Karyan, G.; Kato, Y.; Kawasaki, T.; Kichimi, H.; Kim, B.H.; Kim, C.H.; Doris Yangsoo; 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.; Lange, J.S.; Lee, I.S.; Lee, S.C.; Li, C.H.; Li, L.K.; Li, Y.B.; Li, Gioi L.; Libby, J.; Lieret, K.; Liventsev, D.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Metzner, F.; Mizuk, R.; Mohanty, S.; Mori, T.; Nakao, M.; Natkaniec, Z.; Natochii, A.; Nayak, L.; Niiyama, M.; Nisar, N.K.; Nishida, S.; Ono, H.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Pang, T.; Pardi, S.; Park, H.; Park, S.-H.; Patra, S.; Paul, S.; Pedlar, T.K.; Pestotnik, R.; Piilonen, L.E.; Podobnik, T.; Popov, V.; Prencipe, E.; Prim, M.T.; Röhrken, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sangal, A.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M.E.; Shapkin, M.; Sharma, C.; Shebalin, V.; Shiu, J.-G.; Shwartz, B.; Solovieva, E.; Stanič, S.; Starič, M.; Stottler, Z.S.; Sumihama, M.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tanida, K.; Tao, Y.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Uno, K.; Uno, S.; Urquijo, P.; Van, Tonder R.; Varner, G.; Vossen, A.; Wang, C.H.; Wang, E.; Wang, M.-Z.; Wang, P.; Watanuki, S.; Won, E.; Xu, X.; 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.; Zhulanov, V.; (The Belle Collaboration)
- Issue Date
- 14-Apr-2021
- Publisher
- American Physical Society
- Citation
- Physical Review D, v.103, no.7
- Journal Title
- Physical Review D
- Volume
- 103
- Number
- 7
- ISSN
- 2470-0010
- Abstract
- We report measurements of the branching fractions of singly Cabibbo-suppressed decays Λc+→pη and Λc+→pπ0 using the full Belle data sample corresponding to an integrated luminosity of 980.6 fb-1. The data were collected by the Belle detector at the KEKB e+e- asymmetric energy collider. A clear Λc+ signal is seen in the invariant mass distribution of pη. The fitted number of signal events of the Λc+→pη process is 7734±263; from this, we measure the ratio of branching fractions B(Λc+→pη)/B(Λc+→pK-π+)=[2.258±0.077(stat)±0.122(syst)]×10-2, from which we infer the branching fraction B(Λc+→pη)=[1.42±0.05(stat)±0.11(syst)]×10-3. In addition, no significant signal for Λc+→pπ0 is found, so an upper limit on the branching fraction of B(Λc+→pπ0)<8.0×10-5 at a 90% credibility level is set, more than 3 times better than the best current upper limit. © 2021 authors. Published by the American Physical Society.
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Related Researcher
- Kim, D. Y.
- College of Natural Sciences (Department of Physics)