Observation of new resonant structures in $γ γ \to ω ϕ$, $ϕ ϕ$ and $ω ω$

Liu, Z. Q.; Shen, C. P.; Yuan, C. Z.; Adachi, I.; Aihara, H.; Iijima, T.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Belous, K.; Bhardwaj, V.; Bhuyan, B.; Bischofberger, M.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M.-C.; Chang, P.; Chen, A.; Chen, P.; Cheon, B. G.; Chistov, R.; Cho, I.-S.; Cho, K.; Choi, S.-K.; Choi, Y.; Dalseno, J.; Doležal, Z.; Doleal, Z.; Drásal, Z.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Gaur, V.; Gabyshev, N.; Garmash, A.; Goh, Y. M.; Haba, J.; Hayasaka, K.; Hayashii, H.; Horii, Y.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y. B.; Hyun, H. J.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwabuchi, M.; Iwasaki, Y.; Iwashita, T.; Julius, T.; Kang, J. H.; Kawasaki, T.; Kiesling, C.; Kim, H. J.; Kim, H. O.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, Y. J.; Ko, B. R.; Koblitz, S.; Kodyš, P.; Kody, P.; Korpar, S.; Križan, P.; Krian, P.; Krokovny, P.; Kumita, T.; Kuzmin, A.; Kwon, Y.-J.; Lange, J. S.; Lee, S.-H.; Li, J.; Li, X. R.; Li, Y.; Libby, J.; Liu, C.; Liventsev, D.; Louvot, R.; Matvienko, D.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Mori, T.; Muramatsu, N.; Mussa, R.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nakazawa, H.; Ng, C.; Nishida, S.; Nishimura, K.; Nitoh, O.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H. K.; Pedlar, T. K.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Ritter, M.; Rohrken, M.; Ryu, S.; Röhrken, M.; Sahoo, H.; Sakai, K.; Sakai, Y.; Sanuki, T.; Sato, Y.; Schneider, O.; Schwanda, C.; Seidl, R.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shibata, T.-A.; Shiu, J.-G.; Shwartz, B.; Sibidanov, A.; Simon, F.; Smerkol, P.; Sohn, Y.-S.; Sokolov, A.; Solovieva, E.; Stanič, S.; Starič, M.; Sumiyoshi, T.; Tatishvili, G.; Teramoto, Y.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Yusa, Y.; Wang, C. H.; Wang, P.; Zhang, C. C.; Wang, X. L.; Watanabe, M.; Zhang, Z. P.; Watanabe, Y.; Zhilich, V.; Williams, K. M.; Won, E.; Zhulanov, V.; Yamashita, Y.; Collaboration, Belle

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American Physical Society, Physical Review Letters, 23(108)

DOI: 10.1103/physrevlett.108.232001

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Observation of new resonant structures in $γ γ \to ω ϕ$, $ϕ ϕ$ and $ω ω$

Journal article published in 2012 by Z. Q. Liu, C. P. Shen, C. Z. Yuan

, I. Adachi, H. Aihara, T. Iijima, D. M. Asner, V. Aulchenko, T. Aushev, A. M. Bakich, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, A. Bondar and other authors.

This paper is made freely available by the publisher.

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Abstract

The processes $γ γ \to ω ϕ$, $ϕ ϕ$, and $ω ω$ are measured using an 870 fb$^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. Production of vector meson pairs is clearly observed and their cross sections are measured for masses that range from threshold to 4.0 GeV. In addition to signals from well established spin zero and spin two charmonium states, there are clear resonant structures below charmonium threshold, which have not been previously observed. We report a spin-parity analysis for the new structures and determine the products of the $\etac$, $χ_{c0}$, and $χ_{c2}$ two-photon decay widths and branching fractions. ; Comment: 7 pages, 3 figures, 1 table, version to appear in Phys. Rev. Lett

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Observation of new resonant structures in $γ γ \to ω ϕ$, $ϕ ϕ$ and $ω ω$

Abstract