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Study of <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → Υ(1S, 2S)η and <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → Υ(1<i>S</i>)η′ at √<i>s</i>=10.866 GeV with the Belle detectoropen access
- Authors
- Kovalenko, E.; Garmash, A.; Krokovny, P.; Adachi, I; Aihara, H.; 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.; Bondar, A.; Bonvicini, G.; Bozek, A.; Bracko, M.; Browder, T. E.; Campajola, M.; Cao, L.; Cervenkov, D.; M-C Chang; Cheon, B. G.; Chilikin, K.; Cho, H. E.; Cho, K.; S-J Cho; S-K Choi; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Das, S.; De Nardo, G.; Di Capua, F.; Dolezal, Z.; Dong, T., V; Eidelman, S.; Epifanov, D.; Ferber, T.; Frey, A.; Fulsom, B. G.; Garg, R.; Gaur, V; Gabyshev, N.; Giri, A.; Goldenzweig, P.; Greenwald, D.; Gudkova, K.; Hadjivasiliou, C.; Hara, T.; Hayasaka, K.; W-S Hou; C-L Hsu; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Jacobs, W. W.; Jin, Y.; Joo, K. K.; Karyan, G.; Kichimi, H.; Kiesling, C.; Kim, C. H.; Kim, D. Y.; K-H Kim; Kim, S. H.; Kim, Y-K; Kinoshita, K.; Kodys, P.; Konno, T.; Korobov, A.; Korpar, S.; Krizan, P.; Kroeger, R.; Kuhr, T.; Kumar, M.; Kumar, R.; Kumara, K.; Kuzmin, A.; Y-J Kwon; Lalwani, K.; Lange, J. S.; Lee, S. C.; Li, Y. B.; Li Gioi, L.; Libby, J.; Lieret, K.; Liventsev, D.; MacQueen, C.; Masuda, M.; Matsuda, T.; Matvienko, D.; Merola, M.; Metzner, F.; Miyabayashi, K.; Mizuk, R.; Mohanty, G. B.; Nakao, M.; Natochii, A.; Nayak, L.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Ogawa, K.; Ogawa, S.; Ono, H.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, H.; Park, S-H; Patra, S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Prencipe, E.; Prim, M. T.; Rabusov, A.; Rohrken, M.; Rostomyan, A.; Rout, N.; Russo, G.; Sahoo, D.; Sakai, Y.; Sandilya, S.; Sangal, A.; Sanuki, T.; Savinov, V; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Sevior, M. E.; Sharma, C.; Shiu, J-G; Shwartz, B.; Sokolov, A.; Solovieva, E.; Staric, M.; Stottler, Z. S.; Sumihama, M.; Sumiyoshi, T.; Sutcliffe, W.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, K.; Uno, S.; Urquijo, P.; Usov, Y.; Van Tonder, R.; Varner, G.; Vinokurova, A.; Waheed, E.; Wang, C. H.; Wang, M-Z; Wang, P.; Watanabe, M.; Werbycka, O.; Won, E.; Yan, W.; Yang, S. B.; Ye, H.; Yin, J. H.; Yusa, Y.; Zhang, Z. P.; Zhilich, V; Zhukova, V
- Issue Date
- Dec-2021
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.104, no.11
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 104
- Number
- 11
- ISSN
- 2470-0010
2470-0029
- Abstract
- We report the first observation of the processes e(+)e(-) -> Upsilon(1S, 2S)eta at root s = 10.866 GeV, with significance exceeding 10 sigma for both processes. The measured Born cross sections are sigma(e(+)e(-) -> Upsilon(2S)eta) = 2.07 +/- 0.21 +/- 0.19 pb, and sigma(e(+)e(-) -> Upsilon(1S)eta) = 0.42 +/- 0.08 +/- 0.04 pb. We also set the upper limit on the cross section of the process e(+)e(-) -> Upsilon(1S)eta to be sigma(e(+)e(-) -> Upsilon(1S)eta') < 0.037 pb at 90% C.L. The results are obtained with the data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider in the energy range from 10.63 to 11.02 GeV.
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