Study of charmonia in four-meson final states produced in two-photon collisions

We report measurements of charmonia produced in two-photon collisions and decaying to four-meson final states, where the meson is either a charged pion or a charged kaon. The analysis is based on a 395 fb -1 data sample accumulated with the Belle detector at the KEKB electron–positron collider. We o...

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Veröffentlicht in:	The European physical journal. C, Particles and fields Particles and fields, 2008-01, Vol.53 (1), p.1-14
Hauptverfasser:	Adachi, I., Aihara, H., Aushev, T., Bakich, A.M., Belous, K., Bitenc, U., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., Browder, T.E., Chang, P., Chao, Y., Chen, K.-F., Chen, W.T., Cho, I.-S., Choi, Y., Choi, Y.K., Dalseno, J., Drutskoy, A., Eidelman, S., Gabyshev, N., Golob, B., Ha, H., Haba, J., Hayasaka, K., Hazumi, M., Heffernan, D., Hoshi, Y., Hou, W.-S., Iijima, T., Itoh, R., Iwasaki, M., Iwasaki, Y., Kaji, H., Kawai, H., Kawasaki, T., Kim, H.O., Kim, S.K., Kim, Y.J., Korpar, S., Kumar, R., Kuo, C.C., Kuzmin, A., Lee, J.S., Lee, M.J., Lee, S.E., Li, J., Limosani, A., Lin, S.-W., Liventsev, D., Mandl, F., Matsumoto, T., Matyja, A., McOnie, S., Miyake, H., Miyazaki, Y., Nakazawa, H., Natkaniec, Z., Nitoh, O., Ohshima, T., Okuno, S., Olsen, S.L., Ozaki, H., Pakhlov, P., Palka, H., Park, C.W., Park, H., Peak, L.S., Pestotnik, R., Piilonen, L.E., Sahoo, H., Sakai, Y., Schneider, O., Sevior, M.E., Shibuya, H., Shiu, J.-G., Singh, J.B., Somov, A., Soni, N., Stanič, S., Stoeck, H., Tanaka, M., Tian, X.C., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Varner, G., Vervink, K., Villa, S., Vinokurova, A., Wang, P., Won, E., Yabsley, B.D., Yamaguchi, A., Yuan, C.Z., Zhang, C.C., Zhilich, V., Zupanc, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astrophysics and Cosmology Collisions Decay Elementary Particles Hadrons Heavy Ions Kaons Measurement Science and Instrumentation Meson resonance Nuclear Energy Nuclear Physics Photons Physics Physics and Astronomy Pions Quantum Field Theories Quantum Field Theory Quarks Regular Article - Experimental Physics String Theory
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Beschreibung
Zusammenfassung:	We report measurements of charmonia produced in two-photon collisions and decaying to four-meson final states, where the meson is either a charged pion or a charged kaon. The analysis is based on a 395 fb -1 data sample accumulated with the Belle detector at the KEKB electron–positron collider. We observe signals for the three C-even charmonia η c (1S), χ c0 (1P) and χ c2 (1P) in the π + π - π + π - , K + K - π + π - and K + K - K + K - decay modes. No clear signals for η c (2S) production are found in these decay modes. We have also studied resonant structures in charmonium decays to two-body intermediate meson resonances. We report the products of the two-photon decay width and the branching fractions, , for each of the charmonium decay modes.
ISSN:	1434-6044 1434-6052
DOI:	10.1140/epjc/s10052-007-0451-z