Details

Autor(en) / Beteiligte

• Sandilya, S
• Trabelsi, K
• Aihara, H
• Asner, D M
• Aziz, T
• Bakich, A M
• Bondar, A
• Bračko, M
• Chen, P
• Cho, K
• Choi, Y
• Cinabro, D
• Dalseno, J
• Dingfelder, J
• Doležal, Z
• Drutskoy, A
• Dutta, D
• Eidelman, S
• Farhat, H
• Gabyshev, N
• Ganguly, S
• Gillard, R
• Goh, Y M
• Golob, B
• Haba, J
• Hayashii, H
• Hou, W-S
• Hyun, H J
• Ishikawa, A
• Itoh, R
• Iwasaki, Y
• Kang, J H
• Kawai, H
• Kawasaki, T
• Kim, H O
• Kim, J B
• Kim, J H
• Kim, Y J
• Korpar, S
• Krokovny, P
• Kumita, T
• Kuzmin, A
• Kwon, Y-J
• Li, Y
• Libby, J
• MacNaughton, J
• Matvienko, D
• Miyata, H
• Mizuk, R
• Muramatsu, N
• Nakao, M
• Ng, C
• Nishida, S
• Nitoh, O
• Ogawa, S
• Okuno, S
• Park, C W
• Park, H K
• Pedlar, T K
• Ritter, M
• Rostomyan, A
• Ryu, S
• Sahoo, H
• Saito, T
• Sakai, Y
• Sato, Y
• Savinov, V
• Schneider, O
• Schnell, G
• Senyo, K
• Sevior, M E
• Shapkin, M
• Sibidanov, A
• Simon, F
• Stanič, S
• Starič, M
• Steder, M
• Sumiyoshi, T
• Tamponi, U
• Teramoto, Y
• Uchida, M
• Uglov, T
• Unno, Y
• Vahsen, S E
• Van Hulse, C
• Vanhoefer, P
• Varner, G
• Vorobyev, V
• Wagner, M N
• Wang, C H
• Wang, M-Z
• Wang, X L
• Watanabe, M
• Watanabe, Y
• Wiechczynski, J
• Yamaoka, J
• Yamashita, Y
• Yashchenko, S
• Yusa, Y
• Zhilich, V

Titel

Search for bottomonium states in exclusive radiative Υ(2S) decays

Ist Teil von

• Physical review letters, 2013-09, Vol.111 (11), p.112001-112001, Article 112001

Ort / Verlag

United States: American Physical Society (APS)

Erscheinungsjahr

2013

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• We search for bottomonium states in Υ(2S) → (bb)γ decays with an integrated luminosity of 24.7  fb(-1) recorded at the Υ(2S) resonance with the Belle detector at KEK, containing (157.8±3.6)×10(6) Υ(2S) events. The (bb) system is reconstructed in 26 exclusive hadronic final states composed of charged pions, kaons, protons, and K(S)(0) mesons. We find no evidence for the state recently observed around 9975 MeV (X(bb)) in an analysis based on a data sample of 9.3×10(6) Υ(2S) events collected with the CLEO III detector. We set a 90% confidence level upper limit on the branching fraction B[Υ(2S) → X(bb)γ] × ∑(i)B[X(bb) → h(i)] < 4.9×10(-6), summed over the exclusive hadronic final states employed in our analysis. This result is an order of magnitude smaller than the measurement reported with CLEO data. We also set an upper limit for the ηb(1S) state of B[Υ(2S) → ηb(1S)γ] × ∑(i)B[ηb(1S) → h(i)] < 3.7×10(-6).