Measurement of branching fractions for B -> J/psi eta K decays and search for a narrow resonance in the J/psi eta final state

  • Iwashita, T.
  • Miyabayashi, K.
  • Bhardwaj, V.
  • Adachi, I.
  • Aihara, H.
  • ... Kim, D. Y.
  • 외 174명
Citations

WEB OF SCIENCE

17
Citations

SCOPUS

14

초록

We report an observation of the B-+/- -> J/psi eta K-+/- and B-0 -> J/psi eta K-S(0) decays using 772 x 10(6)B (B) over bar pairs collected at the gamma (4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We obtain the branching fractions B(B-+/- -> J/psi eta K-+/-) = (1.27 +/- 0.11 (stat.) +/- 0.11 ( syst.)) x 10(- 4) and B(B-0 -> J/psi eta K-S(0)) = ( 5.22 +/- 0.78 (stat.) +/- 0.49 (syst.)) x 10(-5). We search for a new narrow charmonium(- like) state X in the J/psi eta mass spectrum and find no significant excess. We set upper limits on the product of branching fractions, B(B-+/- -> XK +/-) B(X -> J/psi eta), at 3872 MeV c(-2) where a C-odd partner of X(3872) may exist, psi(4040) and psi(4160) assuming their known mass and width, and over a range from 3.8 to 4.8 GeV c(-2). The obtained upper limits at 90% confidence level for XC-odd(3872), psi(4040), and psi(4160) are 3.8 x 10(-6), 15.5 x 10(-6), and 7.4 x 10(-6), respectively.

키워드

X(3872)CHARMONIUMMECHANISMDETECTORMESONSKEKB
제목
Measurement of branching fractions for B -> J/psi eta K decays and search for a narrow resonance in the J/psi eta final state
저자
Iwashita, T.Miyabayashi, K.Bhardwaj, V.Adachi, I.Aihara, H.Asner, D. M.Aushev, T.Bakich, A. M.Bala, A.Bhuyan, B.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Chang, M. -C.Chen, A.Cheon, B. G.Chilikin, K.Chistov, R.Cho, K.Chobanova, V.Choi, S. -K.Choi, Y.Cinabro, D.Dalseno, J.Danilov, M.Dolezal, Z.Drasal, Z.Dutta, D.Eidelman, S.Esen, S.Farhat, H.Fast, J. E.Feindt, M.Ferber, T.Frey, A.Gaur, V.Gabyshev, N.Ganguly, S.Gillard, R.Goh, Y. M.Golob, B.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Higuchi, T.Horii, Y.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Ishikawa, A.Itoh, R.Iwasaki, Y.Jaegle, I.Julius, T.Kah, D. H.Kang, J. H.Kato, E.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, D. Y.Kim, H. J.Kim, H. O.Kim, J. B.Kim, J. H.Kim, M. J.Kim, Y. J.Kinoshita, K.Klucar, J.Ko, B. R.Kodys, P.Korpar, S.Krizan, P.Krokovny, P.Kuhr, T.Kumita, T.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, S. -H.Li, Y.Libby, J.Liu, C.Liu, Y.Lukin, P.Matvienko, D.Miyata, H.Mizuk, R.Moll, A.Mori, T.Nagasaka, Y.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nayak, M.Ng, C.Nisar, N. K.Nishida, S.Nitoh, O.Ogawa, S.Okuno, S.Pakhlova, G.Panzenboeck, E.Park, H.Park, H. K.Pedlar, T. K.Pestotnik, R.Petric, M.Piilonen, L. E.Ritter, M.Roehrken, M.Rostomyan, A.Ryu, S.Sahoo, H.Saito, T.Sakai, K.Sakai, Y.Sandilya, S.Santel, D.Santelj, L.Sanuki, T.Savinov, V.Schneider, O.Schnell, G.Schwanda, C.Semmler, D.Senyo, K.Seon, O.Sevior, M. E.Shapkin, M.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Steder, M.Sumiyoshi, T.Tamponi, U.Tanida, K.Tatishvili, G.Teramoto, Y.Trabelsi, K.Tsuboyama, T.Uchida, M.Uehara, S.Unno, Y.Uno, S.Urquijo, P.Vanhoefer, P.Varner, G.Varvell, K. E.Vorobyev, V.Vossen, A.Wagner, M. N.Wang, C. H.Wang, M. -Z.Wang, P.Wang, X. L.Watanabe, M.Watanabe, Y.Williams, K. M.Won, E.Yabsley, B. D.Yamashita, Y.Yashchenko, S.Yook, Y.Yuan, C. Z.Zhang, Z. P.Zhilich, V.Zupanc, A.
DOI
10.1093/ptep/ptu043
발행일
2014-04
유형
Article
저널명
Progress of Theoretical and Experimental Physics
4