Measurements of branching fractions and asymmetry parameters of Xi(0)(c) -> Lambda(K)over-bar*(0), Xi(0)(c) -> Sigma(0)(K)over-bar*(0), and Xi(0)(c) -> Sigma(+) K*(-) decays at Belle

  • Jia, S.
  • Tang, S. S.
  • Shen, C. P.
  • Adachi, I.
  • Aihara, H.
  • ... Kim, D. Y.
  • 외 182명
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초록

Using a data sample of 980 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+) e(-) collider, we study the processes of Xi(0)(c) -> Lambda(K) over bar*(0), Xi(0)(c) -> Sigma(0)(K) over bar*(0), and Xi(0)(c) -> Sigma(+) K*(-) for the first time. The relative branching ratios to the normalization mode of Xi(0)(c) -> Xi(-)pi(+) are measured to be B(Xi(0)(c) -> Lambda(K) over bar*(0)/B(Xi(0)(c) -> Xi(-)pi(+)) = 0.18 +/- 0.02(stat.) +/- 0.01(syst.), B(Xi(0)(c) -> Sigma(0)(K) over bar*(0)/B(Xi(0)(c) -> Xi(-)pi(+)) = 0.69 +/- 0.03(stat.) +/- 0.03(syst.), B(Xi(0)(c) -> Sigma K+*(-)/B(Xi(0)(c) -> Xi(-)pi(+)) = 0.34 +/- 0.06(stat.) +/- 0.02(syst.), where the uncertainties are statistical and systematic, respectively. We obtain B(Xi(0)(c) -> Lambda(K) over bar*(0)) = (3.3 +/- 0.3(stat.) +/- 0.2(syst.) +/- 1.0(ref.)) x 10(-3), B(Xi(0)(c) -> Sigma(0)(K) over bar*(0)) = (12.4 +/- 0.5(stat.) +/- 0.5(syst.) +/- 3.6(ref.)) x 10(-3), B(Xi(0)(c) -> Sigma K+*(-)) = (6.1 +/- 1.0(stat.) +/- 0.4(syst.) +/- 1.8(ref.)) x 10(-3), where the uncertainties are statistical, systematic, and from B(Xi(0)(c) -> Xi(-)pi(+)), respectively. The asymmetry parameters alpha(Xi(0)(c) -> Lambda(K) over tilde*(0)) and alpha(Xi(0)(c) -> Sigma K+*(-)) are 0.15 +/- 0.22(stat.) +/- 0.04(syst.) and -0.52 +/- 0.30(stat.) +/- 0.02(syst.), respectively, where the uncertainties are statistical followed by systematic.

키워드

Branching fractione(+)-e(-) ExperimentsCharm physicsCHARMED-BARYON DECAYSWEAK MESONIC DECAYSNONLEPTONIC DECAYSMODEL
제목
Measurements of branching fractions and asymmetry parameters of Xi(0)(c) -> Lambda(K)over-bar*(0), Xi(0)(c) -> Sigma(0)(K)over-bar*(0), and Xi(0)(c) -> Sigma(+) K*(-) decays at Belle
저자
Jia, S.Tang, S. S.Shen, C. P.Adachi, I.Aihara, H.Al Said, S.Asner, D. M.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Bahinipati, S.Behera, P.Bennett, J.Bessner, M.Bilka, T.Biswal, J.Bobrov, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Campajola, M.Cervenkov, D.Chang, M. -C.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Cho, S. -J.Choi, S. -K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Das, S.De Nardo, G.Dhamija, R.Di Capua, F.Dolezal, Z.Dong, T. V.Eidelman, S.Epifanov, D.Ferber, T.Flood, K.Fulsom, B. G.Garg, R.Gaur, V.Gabyshev, N.Garmash, A.Giri, A.Goldenzweig, P.Hartbrich, O.Hayasaka, K.Hayashii, H.Hou, W. -S.Hsu, C. -L.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jin, Y.Joo, K. K.Karyan, G.Kato, Y.Kichimi, H.Kim, C. H.Kim, D. Y.Kim, K. -H.Kim, S. H.Kim, Y. -K.Kinoshita, K.Kodys, P.Konno, T.Korobov, A.Korpar, S.Kovalenko, E.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kumara, K.Kuzmin, A.Kwon, Y. -J.Lalwani, K.Lange, J. S.Lee, S. C.Li, J.Li, L. K.Li, Y. B.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.MacQueen, C.Masuda, M.Matsuda, T.Matvienko, D.McNeil, J. T.Merola, M.Metzner, F.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Mussa, R.Nakao, M.Natochii, A.Nayak, L.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Nishimura, K.Ogawa, K.Ogawa, S.Ono, H.Onuki, Y.Oskin, P.Pakhlov, P.Pakhlova, G.Pardi, S.Park, H.Park, S. -H.Patra, S.Paul, S.Pestotnik, R.Piilonen, L. E.Podobnik, T.Popov, V.Prencipe, E.Prim, M. T.Rostomyan, A.Rout, N.Russo, G.Sahoo, D.Sandilya, S.Sangal, A.Savinov, V.Schnell, G.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Sharma, C.Shiu, J. -G.Sokolov, A.Solovieva, E.Staric, M.Stottler, Z. S.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tanida, K.Tenchini, F.Trabelsi, K.Uehara, S.Uglov, T.Unno, Y.Uno, K.Uno, S.Urquijo, P.Usov, Y.Van Tonder, R.Varner, G.Waheed, E.Wang, C. H.Wang, M. -Z.Wang, P.Watanabe, M.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.
DOI
10.1007/JHEP06(2021)160
발행일
2021-06-28
유형
Article
저널명
Journal of High Energy Physics
2021
6