Study of e(+)e(-) -> Upsilon(1S, 2S)eta and e(+)e(-) -> Upsilon(1S)eta ' at root s=10.866 GeV with the Belle detector

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.Chang, M. -C.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.Di Capua, F.Dolezal, Z.Dong, T.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.Hou, W. -S.Hsu, C. -L.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.Kim, K. -H.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.Kwon, Y. -J.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, Leo 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.2024-01-222024-01-222021-12-152470-0010https://hdl.handle.net/10919/117480We report the first observation of the processes e+e-→D(1S,2S)η at s=10.866 GeV, with significance exceeding 10σ for both processes. The measured Born cross sections are σ(e+e-→D(2S)η)=2.07±0.21±0.19 pb, and σ(e+e-→D(1S)η)=0.42±0.08±0.04 pb. We also set the upper limit on the cross section of the process e+e-→D(1S)η′ to be σ(e+e-→D(1S)η′)<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.12 page(s)application/pdfenIn CopyrightStudy of e(+)e(-) -> Upsilon(1S, 2S)eta and e(+)e(-) -> Upsilon(1S)eta ' at root s=10.866 GeV with the Belle detectorArticle - RefereedPhysical Review Dhttps://doi.org/10.1103/PhysRevD.104.11200610411Piilonen, Leo [0000-0001-6836-0748]2470-0029