Uehara, S.Aushev, T.Bakich, A. M.Belous, K.Bhardwaj, V.Bischofberger, M.Bračko, M.Browder, T. E.Chang, P.Chen, A.Chen, P.Cheon, B. G.Chiang, C.-C.Cho, I.-S.Choi, S.-K.Choi, Y.Dalseno, J.Drutskoy, A.Eidelman, S.Epifanov, D.Feindt, M.Gabyshev, N.Ha, H.Haba, J.Hayasaka, K.Hayashii, H.Hoshi, Y.Hou, W.-S.Hsiung, Y. B.Hyun, H. J.Inami, K.Itoh, R.Iwabuchi, M.Iwasaki, M.Iwasaki, Y.Joshi, N. J.Kang, J. H.Kawasaki, T.Kiesling, C.Kim, H. J.Kim, J. H.Kim, Y. I.Kim, Y. J.Ko, B. R.Kodyš, P.Korpar, S.Križan, P.Krokovny, P.Kumita, T.Kuzmin, A.Kwon, Y.-J.Kyeong, S.-H.Lange, J. S.Lee, M. J.Lee, S.-H.Li, J.Liu, C.Liu, Y.Liventsev, D.Louvot, R.Matyja, A.Mconie, S.Miyabayashi, K.Miyata, H.Miyazaki, Y.Mizuk, R.Mussa, R.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Pakhlov, P.Pakhlova, G.Park, C. W.Park, H.Park, H. K.Pestotnik, R.Petrič, M.Piilonen, L. E.Röhrken, M.Ryu, S.Sahoo, H.Sakai, Y.Schneider, O.Schwanda, C.Sevior, M. E.Shapkin, M.Shen, C. P.Shiu, J.-G.Shwartz, B.Singh, J. B.Smerkol, P.Solovieva, E.Starič, M.Teramoto, Y.Trabelsi, K.Unno, Y.Uno, S.Urquijo, P.Varner, G.Vervink, K.Wang, C. H.Wang, P.Watanabe, Y.Wedd, R.Won, E.Yabsley, B. D.Yamashita, Y.Yuan, C. Z.Zhang, C. C.Zivko, T.Zyukova, O.2010-11-052010-11-052010-11-05201010.1103/PhysRevLett.104.092001https://infoscience.epfl.ch/handle/20.500.14299/57007WOS:000275252500011We report the results of a search for a charmoniumlike state produced in the process gamma gamma -> omega J/psi in the 3.9-4.2 GeV = c(2) mass region. We observe a significant enhancement, which is well described by a resonant shape with mass M = (3915 +/- 3 +/- 2_ MeV/c(2) and total width Gamma = (17 +/- 10 +/- 3) MeV. This enhancement may be related to one or more of the three charmoniumlike states so far reported in the 3.90-3.95 GeV= c(2) mass region.Belletext::journal::journal article::research article