Kuo, C.C.Abe, K.Adachi, I.Aihara, H.Asano, Y.Aulchenko, V.Aushev, T.Bahinipati, S.Bakich, A.M.Bay, A.Bedny, I.Bitenc, U.Bizjak, I.Blyth, S.Bondar, A.Bozek, A.Bračko, M.Chang, M.-C.Chang, P.Chen, A.Chen, W.T.Cheon, B.G.Chistov, R.Choi, Y.Chuvikov, A.Cole, S.Dalseno, J.Danilov, M.Dash, M.Drutskoy, A.Eidelman, S.Enari, Y.Fratina, S.Gabyshev, N.Gershon, T.Go, A.Gokhroo, G.Gorišek, A.Haba, J.Hayasaka, K.Hayashii, H.Hazumi, M.Hokuue, T.Hoshi, Y.Hou, S.Hou, W.-S.Iijima, T.Imoto, A.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, M.Kang, J.H.Kang, J.S.Kapusta, P.Kawai, H.Kawasaki, T.Khan, H.R.Kichimi, H.Kim, H.J.Kim, S.M.Krokovny, P.Kulasiri, R.Kumar, S.Kuzmin, A.Kwon, Y.-J.Leder, G.Lesiak, T.Lin, S.-W.Liventsev, D.MacNaughton, J.Majumder, G.Mandl, F.Matsumoto, T.Matyja, A.Mitaroff, W.Miyake, H.Mizuk, R.Moloney, G.R.Mori, T.Nagasaka, Y.Nakano, E.Nakao, M.Nakazawa, H.Natkaniec, Z.Nishida, S.Nitoh, O.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S.L.Ostrowicz, W.Palka, H.Park, H.Peak, L.S.Pestotnik, R.Piilonen, L.E.Poluektov, A.Sagawa, H.2010-11-052010-11-052010-11-05200510.1016/j.physletb.2005.06.0362-s2.0-22544455958https://infoscience.epfl.ch/handle/20.500.14299/56882WOS:000231105400006A high precision study of the process γγ→pp̄ has been performed using a data sample of 89 fb-1 collected with the Belle detector at the KEKB e+e- collider. The cross section of pp̄ production has been measured at two-photon center-of-mass (c.m.) energies between 2.025 and 4.0 GeV and in the c.m. angular range of |cosθ*|<0.6. Production of γγ→ηc→pp̄ is observed and the product of the two-photon width of the ηc and its branching ratio to pp̄ is determined. © 2005 Elsevier B.V. All rights reserved.text::conference output::conference proceedings::conference paper