Search for light tetraquark states in ϒ(1S) and ϒ(2S) decays Academic Article uri icon

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abstract

  • We search for the $J^{PC}=0^{--}$ and $1^{+-}$ light tetraquark states with masses up to 2.46~GeV/$c^2$ in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays with data samples of $(102\pm 2)$ million and $(158\pm 4)$ million events, respectively, collected with the Belle detector. No significant signals are observed in any of the studied production modes, and 90\% credibility level (C.L.) upper limits on their branching fractions in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays are obtained. The inclusive branching fractions of the $\Upsilon(1S)$ and $\Upsilon(2S)$ decays into final states with $f_1(1285)$ are measured to be ${\cal B}(\Upsilon(1S)\to f_1(1285)+anything)=(46\pm28({\rm stat.})\pm13({\rm syst.}))\times 10^{-4}$ and ${\cal B}(\Upsilon(2S)\to f_1(1285)+anything)=(22\pm15({\rm stat.})\pm6.3({\rm syst.}))\times 10^{-4}$. The measured $\chi_{b2} \to J/\psi + anything$ branching fraction is measured to be $(1.50\pm0.34({\rm stat.})\pm0.22({\rm syst.}))\times 10^{-3}$, and 90\% C.L. upper limits for the $\chi_{b0,b1} \to J/\psi + anything$ branching fractions are found to be $2.3\times 10^{-3}$ and $1.1\times 10^{-3}$, respectively. For ${\cal B}(\chi_{b1} \to \omega + anything)$, the branching fraction is measured to be $(4.9\pm1.3({\rm stat.})\pm0.6({\rm syst.}))\times 10^{-2}$. %($<3.68\times 10^{-2}$ at 90\% C.L.). All results reported here are the first measurements for these modes.

authors

  • Jia, S
  • Shen, CP
  • Yuan, CZ
  • Adachi, I
  • Ahn, JK
  • Aihara, H
  • Al Said, S
  • Asner, DM
  • Atmacan, H
  • Aushev, T
  • Ayad, R
  • Babu, V
  • Badhrees, I
  • Bahinipati, S
  • Bakich, AM
  • Bansal, V
  • Behera, P
  • Berger, M
  • Bhardwaj, V
  • Bhuyan, B
  • Biswal, J
  • Bonvicini, G
  • Bozek, A
  • Bračko, M
  • Browder, TE
  • Červenkov, D
  • Chang, M-C
  • Chekelian, V
  • Chen, Alan
  • Cheon, BG
  • Chilikin, K
  • Cho, K
  • Choi, S-K
  • Choi, Y
  • Cinabro, D
  • Czank, T
  • Dash, N
  • Di Carlo, S
  • Doležal, Z
  • Dutta, D
  • Eidelman, S
  • Epifanov, D
  • Fast, JE
  • Ferber, T
  • Fulsom, BG
  • Garg, R
  • Gaur, V
  • Gabyshev, N
  • Garmash, A
  • Gelb, M
  • Giri, A
  • Goldenzweig, P
  • Grzymkowska, O
  • Guido, E
  • Haba, J
  • Hara, T
  • Hayasaka, K
  • Hayashii, H
  • Hedges, MT
  • Hou, W-S
  • Iijima, T
  • Inami, K
  • Inguglia, G
  • Ishikawa, A
  • Itoh, R
  • Iwasaki, M
  • Iwasaki, Y
  • Jacobs, WW
  • Jaegle, I
  • Jin, Y
  • Joffe, D
  • Joo, KK
  • Julius, T
  • Kaliyar, AB
  • Karyan, G
  • Kawasaki, T
  • Kichimi, H
  • Kiesling, C
  • Kim, DY
  • Kim, HJ
  • Kim, JB
  • Kim, KT
  • Kim, SH
  • Kodyš, P
  • Korpar, S
  • Kotchetkov, D
  • Križan, P
  • Kroeger, R
  • Krokovny, P
  • Kulasiri, R
  • Kumita, T
  • Kuzmin, A
  • Kwon, Y-J
  • Lange, JS
  • Lee, IS
  • Lee, SC
  • Li, LK
  • Li, Y
  • Li Gioi, L
  • Libby, J
  • Liventsev, D
  • Lubej, M
  • Luo, T
  • Masuda, M
  • Matsuda, T
  • Matvienko, D
  • Merola, M
  • Miyabayashi, K
  • Miyata, H
  • Mizuk, R
  • Moon, HK
  • Mori, T
  • Mussa, R
  • Nakao, M
  • Nanut, T
  • Nath, KJ
  • Natkaniec, Z
  • Nayak, M
  • Niiyama, M
  • Nisar, NK
  • Nishida, S
  • Ogawa, S
  • Okuno, S
  • Olsen, SL
  • Ono, H
  • Onuki, Y
  • Pakhlov, P
  • Pakhlova, G
  • Pal, B
  • Pardi, S
  • Park, CW
  • Park, H
  • Paul, S
  • Pavelkin, I
  • Pestotnik, R
  • Piilonen, LE
  • Ritter, M
  • Rostomyan, A
  • Russo, G
  • Sakai, Y
  • Salehi, M
  • Sandilya, S
  • Santelj, L
  • Sanuki, T
  • Savinov, V
  • Schneider, O
  • Schnell, G
  • Schwanda, C
  • Seino, Y
  • Senyo, K
  • Seon, O
  • Sevior, ME
  • Shebalin, V
  • Shibata, T-A
  • Shimizu, N
  • Shiu, J-G
  • Shwartz, B
  • Singh, JB
  • Sokolov, A
  • Solovieva, E
  • Starič, M
  • Stypula, J
  • Sumihama, M
  • Sumiyoshi, T
  • Takizawa, M
  • Tamponi, U
  • Tanida, K
  • Tenchini, F
  • Uchida, M
  • Uglov, T
  • Unno, Y
  • Uno, S
  • Urquijo, P
  • Usov, Y
  • Van Hulse, C
  • Varner, G
  • Vossen, A
  • Wang, B
  • Wang, CH
  • Wang, M-Z
  • Wang, P
  • Wang, XL
  • Watanabe, M
  • Watanabe, Y
  • Widmann, E
  • Won, E
  • Yamashita, Y
  • Ye, H
  • Yusa, Y
  • Zakharov, S
  • Zhang, ZP
  • Zhilich, V
  • Zhukova, V
  • Zhulanov, V
  • Zupanc, A

publication date

  • December 5, 2017