Measurements of the branching fractions of Λ<i><sub>c</sub></i><SUP>+</SUP> → <i>p</i>η and Λ<i><sub>c</sub></i><SUP>+</SUP> → <i>p</i>π<SUP>0</SUP> decays at Belle
  • Li, S. X.
  • Shen, C. P.
  • Adachi, I
  • Ahn, J. K.
  • Aihara, H.
  • 외 197명
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초록

We report measurements of the branching fractions of singly Cabibbo-suppressed decays Lambda(+)(c) -> p eta and Lambda(+)(c) -> p pi(0) 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 collidcr. A clear Lambda(+)(c) signal is seen in the invariant mass distribution of p eta. The fitted number of signal events of the Lambda(+)(c) -> p eta process is 7734 +/- 263; from this, we measure the ratio of branching fractions B(Lambda(+ )(c) -> p eta)/ B(Lambda(+)(c) -> p K- pi(+)) = [2.258 +/- 0.077(stat) +/- 0.122(syst)] x 10(-2), from which we infer the branching fraction B(Lambda(+)(c) -> p eta) = [1.42 +/- 0.05(stat) +/- 0.11(syst)] x 10(-3). In addition, no significant signal for Lambda(+)(c)-> p pi(0) is found, so an upper limit on the branching fraction of B(Lambda(+)(c) -> p eta(0)) < 8.0 x 10(-5) at a 90% credibility level is set, more than 3 times better than the best current upper limit.

키워드

NONLEPTONIC DECAYSFRAGMENTATIONQUARKMODEL
제목
Measurements of the branching fractions of Λ<i><sub>c</sub></i><SUP>+</SUP> → <i>p</i>η and Λ<i><sub>c</sub></i><SUP>+</SUP> → <i>p</i>π<SUP>0</SUP> decays at Belle
저자
Li, S. X.Shen, C. P.Adachi, IAhn, J. K.Aihara, H.Asner, D. M.Aushev, T.Ayad, R.Babu, VBahinipati, S.Behera, P.Bennett, J.Bernlochner, F.Bessner, M.Bhardwaj, VBhuyan, B.Bilka, T.Biswal, J.Bobrov, A.Bozek, A.Browder, T. E.Campajola, M.Cao, L.Chang, M-CChen, 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.Dolezal, Z.Dong, T., VEidelman, S.Epifanov, D.Ferber, T.Ferlewicz, D.Fulsom, B. G.Garg, R.Gaur, VGarmash, A.Giri, A.Goldenzweig, P.Golob, B.Grzymkowska, O.Gudkova, K.Hadjivasiliou, C.Hartbrich, O.Hayasaka, K.Hayashii, H.Hedges, M. T.Hou, W-SHsu, C-LIijima, T.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jang, E-JJia, 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.Kim, D. Y.Kim, K-HKim, S. H.Kim, Y-KKinoshita, K.Kodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kumar, M.Kumara, K.Kuzmin, A.Kwon, Y-JLalwani, 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-HPatra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Podobnik, T.Popov, VPrencipe, E.Prim, M. T.Rohrken, M.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sakai, Y.Sandilya, S.Sangal, A.Santelj, L.Sanuki, T.Savinov, VSchnell, G.Schueler, J.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shapkin, M.Sharma, C.Shebalin, VShiu, J-GShwartz, B.Solovieva, E.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-ZWang, 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, VZhukova, VZhulanov, V
DOI
10.1103/PhysRevD.103.072004
발행일
2021-04
유형
Article
저널명
Physical Review d
103
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