Observation of e(+) e(-) -> gamma chi(c1) and search for e(+) e(-) -> gamma chi(c0), gamma chi(c2), and gamma eta(c) at root s near 10.6 GeV at Belle
- Jia, S.
- Wang, X. L.
- Shen, C. P.
- Yuan, C. Z.
- Adachi, I.
- Aihara, H.
- Al Said, S.
- Asner, D. M.
- Atmacan, H.
- Aulchenko, V.
- Aushev, T.
- Ayad, R.
- Babu, V.
- Bansal, V.
- Behera, P.
- Beleno, C.
- Berger, M.
- Bhuyan, B.
- Bilka, T.
- Biswal, J.
- Bobrov, A.
- Bozek, A.
- Bracko, M.
- Browder, T. E.
- Cao, L.
- Cervenkov, D.
- Chang, P.
- Chekelian, V.
- Chen, A.
- Cheon, B. G.
- Chilikin, K.
- Cho, K.
- Choi, S. -K.
- Choi, Y.
- Choudhury, S.
- Cinabro, D.
- Cunliffe, S.
- Dash, N.
- Di Carlo, S.
- Dolezal, Z.
- Dong, T. V.
- Eidelman, S.
- Epifanov, D.
- Fast, J. E.
- Ferber, T.
- Frey, A.
- Fulsom, B. G.
- Garg, R.
- Gaur, V.
- Gabyshev, N.
- Garmash, A.
- Gelb, M.
- Giri, A.
- Goldenzweig, P.
- Greenwald, D.
- Haba, J.
- Hayasaka, K.
- Hayashii, H.
- Hou, W. -S.
- Hsu, C. -L.
- Iijima, T.
- Inami, K.
- Inguglia, G.
- Ishikawa, A.
- Itoh, R.
- Iwasaki, M.
- Iwasaki, Y.
- Jacobs, W. W.
- Jin, Y.
- Joffe, D.
- Kahn, J.
- Kaliyar, A. B.
- Karyan, G.
- Kawasaki, T.
- Kichimi, H.
- Kiesling, C.
- Kim, D. Y.
- Kim, H. J.
- Kim, J. B.
- Kim, S. H.
- Kinoshita, K.
- Kodys, P.
- Korpar, S.
- Kotchetkov, D.
- Krizan, P.
- Kroeger, R.
- Krokovny, P.
- Kuhr, T.
- Kulasiri, R.
- Kumar, R.
- Kuzmin, A.
- Kwon, Y. -J.
- Lalwani, K.
- Lange, J. S.
- Lee, I. S.
- Lee, J. Y.
- Lee, S. C.
- Li, C. H.
- Li, L. K.
- Li, Y. B.
- Gioi, L. Li
- Libby, J.
- Liptak, Z.
- Liventsev, D.
- Lu, P. -C.
- Lubej, M.
- MacNaughton, J.
- Masuda, M.
- Matsuda, T.
- Matvienko, D.
- Merola, M.
- Miyata, H.
- Mizuk, R.
- Mori, T.
- Mussa, R.
- Nakano, E.
- Nakao, M.
- Nath, K. J.
- Nayak, M.
- Nisar, N. K.
- Nishida, S.
- Ogawa, S.
- Olsen, S. L.
- Ono, H.
- Onuki, Y.
- Ostrowicz, W.
- Pakhlova, G.
- Pal, B.
- Pardi, S.
- Paul, S.
- Pedlar, T. K.
- Pestotnik, R.
- Piilonen, L. E.
- Popov, V.
- Prencipe, E.
- Ritter, M.
- Rostomyan, A.
- Russo, G.
- Sakai, Y.
- Salehi, M.
- Sandilya, S.
- Santelj, L.
- Sanuki, T.
- Savinov, V.
- Schneider, O.
- Schnell, G.
- Schueler, J.
- Schwanda, C.
- Seino, Y.
- Senyo, K.
- Sevior, M. E.
- Shibata, T. -A.
- Shiu, J. -G.
- Simon, F.
- Sokolov, A.
- Solovieva, E.
- Staric, M.
- Stottler, Z. S.
- Strube, J. F.
- Sumiyoshi, T.
- Sutcliffe, W.
- Takizawa, M.
- Tanida, K.
- Tao, Y.
- Tenchini, F.
- Uchida, M.
- Uehara, S.
- Uglov, T.
- Unno, Y.
- Uno, S.
- Urquijo, P.
- Usov, Y.
- Van Tonder, R.
- Varner, G.
- Varvell, K. E.
- Vorobyev, V.
- Waheed, E.
- Wang, B.
- Wang, C. H.
- Wang, M. -Z.
- Wang, P.
- Watanuki, S.
- Widmann, E.
- Won, E.
- Yamamoto, H.
- Yang, S. B.
- Ye, H.
- Yin, J. H.
- Yusa, Y.
- Zhang, Z. P.
- Zhilich, V.
- Zhukova, V.
- Zhulanov, V.
DOIAbstract
Using data samples of 89.5 fb(-1), 711.0 fb(-1), and 121.4 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider at center-of-mass energies 10.52, 10.58, and 10.867 GeV, respectively, we study the exclusive reactions e(+)e(-) -> gamma chi(cJ) (J = 0, 1, 2) and e(+)e(-) -> gamma chi(c). A significant gamma chi(c1) signal is observed for the first time at root s = 10.58 GeV with a significance of 5.1 sigma including systematic uncertainties. No significant excesses for gamma chi(c0), gamma chi(c2), and gamma chi(c) final states are found, and we set 90% credibility level upper limits on the Born cross sections (sigma(B)) at 10.52 GeV, 10.58 GeV, and 10.867 GeV. Together with cross sections measured by BESIII...
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