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Measurement of two-photon decay width of chi_c2(1P) in gamma gamma to chi_c2(1P) to J/psi gamm at Belleopen access
- Authors
- Seino, Y.; Hayasaka, K.; Uehara, S.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aushev, T.; Ayad, R.; Babu, V.; Bahinipati, S.; Behera, P.; Belous, K.; Bennett, J.; Bessner, M.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Bodrov, D.; Bonvicini, G.; Borah, J.; Bozek, A.; Bracko, M.; Branchini, P.; Browder, T. E.; Budano, A.; Campajola, M.; Cervenkov, D.; Chang, M. -C.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, H. E.; Cho, K.; Cho, S. -J.; Choi, S. -K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Das, S.; De Pietro, G.; Dhamija, R.; Di Capua, F.; Dingfelder, J.; Dolezal, Z.; Dong, T. V.; Epifanov, D.; Ferber, T.; Ferlewicz, D.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Giri, A.; Goldenzweig, P.; Graziani, E.; Hadjivasiliou, C.; Hayashii, H.; Hou, W. -S.; Hsu, C. -L.; Inami, K.; Ipsita, N.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Jacobs, W. W.; Jang, E. -J.; Jia, S.; Jin, Y.; Joo, K. K.; Kakuno, H.; Kang, K. H.; Karyan, G.; Kawasaki, T.; Kiesling, C.; Kim, C. H.; Kim, D. Y.; Kim, K. -H.; Kim, Y. -K.; Kodys, P.; Konno, T.; Korobov, A.; Korpar, S.; Kovalenko, E.; Krizan, P.; Krokovny, P.; Kumar, M.; Kumar, R.; Kumara, K.; Lam, T.; Lange, J. S.; Lee, S. C.; Li, C. H.; Li, J.; Li, L. K.; Li, Y.; Li, Y. B.; Li Gioi, L.; Libby, J.; Lieret, K.; Masuda, M.; Matsuda, T.; Matvienko, D.; Maurya, S. K.; Meier, F.; Merola, M.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Mrvar, M.; Mussa, R.; Nakao, M.; Natkaniec, Z.; Natochii, A.; Nayak, L.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Ono, H.; Onuki, Y.; Oskin, P.; Pakhlov, P.; Pakhlova, G.; Pardi, S.; Park, H.; Park, S. -H.; Patra, S.; Paul, S.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Podobnik, T.; Prencipe, E.; Prim, M. T.; Rout, N.; Russo, G.; Sandilya, S.; Sangal, A.; Santelj, L.; Sanuki, T.; Savinov, V.; Schnell, G.; Schueler, J.; Schwanda, C.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Sharma, C.; Shen, C. P.; Shiu, J. -G.; Singh, J. B.; Sokolov, A.; Solovieva, E.; Staric, M.; Stottler, Z. S.; Strube, J. F.; Sumihama, M.; Sumisawa, K.; Sumiyoshi, T.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, K.; Uno, S.; van Tonder, R.; Varner, G.; Vinokurova, A.; Waheed, E.; Wang, E.; Wang, M. -Z.; Wang, X. L.; Watanabe, M.; Watanuki, S.; Won, E.; Yabsley, B. D.; Yan, W.; Yang, S. B.; Yin, J. H.; Yuan, C. Z.; Yusa, Y.; Zhai, Y.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.; Belle Collaboration
- Issue Date
- Jan-2023
- Publisher
- SPRINGER
- Keywords
- e(+)-e(-) Experiments; Quarkonium
- Citation
- JOURNAL OF HIGH ENERGY PHYSICS, v.2023, no.1
- Journal Title
- JOURNAL OF HIGH ENERGY PHYSICS
- Volume
- 2023
- Number
- 1
- ISSN
- 1029-8479
- Abstract
- We report the measurement of the two-photon decay width of chi c2(1P) in two-photon processes at the Belle experiment. We analyze the process gamma gamma ->chi c2(1P)-> J/psi gamma, J/psi -> l(+)l(-) (l=e or mu) using a data sample of 971 fb(-1) collected with the Belle detector at the KEKB e(+)e(-) collider. In this analysis, the product of the two-photon decay width of chi c2(1P) and the branching fraction is determined to be gamma gamma gamma(chi c2(1P))B(chi c2(1P)-> J/psi gamma)B(J/psi -> l(+)l(-))=14.8 +/- 0.3(stat.) +/- 0.7(syst.) eV, which corresponds to gamma gamma gamma(chi c2(1P)) = 653 +/- 13(stat.) +/- 31(syst.) +/- 17(B.R.) eV, where the third uncertainty is from B(chi c2(1P)-> J/psi gamma) and B(J/psi -> l(+)l(-)).
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Related Researcher
- Kim, D. Y.
- College of Natural Sciences (Department of Physics)