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Yuan, D. Cinabro, D. Dutta, D. Epifanov, D. H. Kah, D. Liventsev, D. M. Asner, D. Matvienko, D. Santel, D. Semmler, D. Y. Kim, E. Kato, E. Nakano, E. Nedelkovska, E. Panzenb\\\"ock, E. Solovieva, E. Won, F. Simon, G. B. Mohanty, G. Bonvicini, G. Pakhlova, G. Schnell, G. Tatishvili, G. Varner, H. Aihara, H. Farhat, H. Hayashii, H. J. Hyun, H. Kichimi, H. K. Park, H. Miyata, H. Park, H. Sahoo, I. Adachi, J. B. Kim, J. Brodzicka, J. B. Singh, J. Dalseno, J. E. Fast, J.-G. Shiu, J. Haba, J. H. Kang, J. H. Kim, J. Klucar, J. Li, J. S. Lange, J. Yamaoka, K. Chilikin, K. Cho, K. Dutta, K. E. Varvell, K. Inami, K. Kinoshita, K. Miyabayashi, K. Sakai, K. Senyo, K. Tanida, K. T. Kim, K. Trabelsi, L. E. Piilonen, L. Santelj, M. Bischofberger, M. Bra\\v{c}ko, M. Danilov, M. E. Sevior, M. J. Kim, M. Nakao, M. Nayak, M. N. Wagner, M. Petri\\v{c}, M. Ritter, M. R\\\"ohrken, M. Shapkin, M. Stari\\v{c}, M. Steder, M. Sumihama, M. Uchida, M. Watanabe, M.-Z. Wang, N. Gabyshev, N. K. Nisar, O. Nitoh, O. Schneider, O. Seon, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Lukin, P. Pakhlov, P. Smerkol, P. Urquijo, P. Vanhoefer, P. Wang, R. Chistov, R. Gillard, R. Itoh, R. Kumar, R. Mizuk, R. Mussa, R. Pestotnik, R. Seidl, S. Eidelman, S. E. Vahsen, S. Ganguly, S.-H. Lee, S.-K. Choi, S. Korpar, S. L. Olsen, S. Nishida, S. Ogawa, S. Okuno, S. Sandilya, S. Uehara, S. Yashchenko, T.-A. Shibata, T. Aushev, T. Aziz, T. E. Browder, T. Ferber, T. Hara, T. Iijima, T. Iwashita, T. Julius, T. Kawasaki, T. K. Pedlar, T. Kumita, T. Saito, T. Sanuki, T. Sumiyoshi, T. Tsuboyama, T. Uglov, U. Tamponi, V. Aulchenko, V. Chekelian, V. Chobanova, V. Gaur, V. Savinov, V. Zhilich, V. Zhulanov, W.-S. Hou, Y. B. Hsiung, Y. Choi, Y. Horii, Y. Hoshi, Y. J. Kim, Y.-J. Kwon, Y. Li, Y. M. Goh, Y. Sakai, Y. Sato, Y.-S. Sohn, Y. Teramoto, Y. Unno, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yook, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang, Z. Q. Liu","submitted_at":"2013-04-15T03:43:01Z","abstract_excerpt":"We report measurements of $B \\to \\chi_{c1} \\gamma K$ and $\\chi_{c2} \\gamma K$ decays using $772 \\times 10^{6}$ $B\\bar{B}$ events collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. Evidence of a new resonance in the $\\chi_{c1} \\gamma$ final state is found with a statistical significance of $3.8 \\sigma$. This state has a mass of $3823.1 \\pm 1.8 {(stat)} \\pm 0.7 {(syst)}$ MeV/$c^2$, a value that is consistent with theoretical expectations for the previously unseen $1^3 D_2$ $c\\bar{c}$ meson. 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Bala, A. Bondar, A. Bozek, A. Chen, A. Drutskoy, A. Frey, A. Ishikawa, A. Kuzmin, A. M. Bakich, A. Moll, A. Rostomyan, A. Sokolov, A. Vinokurova, A. Zupanc, B. Bhuyan, B. D. Yabsley, Belle Collaboration: V. Bhardwaj, B. G. Cheon, B. Golob, B. R. Ko, B. Shwartz, C. C. Zhang, C. H. Wang, C. Kiesling, C. Liu, C. P. Shen, C. Schwanda, C. Van Hulse, C. Z. Yuan, D. Cinabro, D. Dutta, D. Epifanov, D. H. Kah, D. Liventsev, D. M. Asner, D. Matvienko, D. Santel, D. Semmler, D. Y. Kim, E. Kato, E. Nakano, E. Nedelkovska, E. Panzenb\\\"ock, E. Solovieva, E. Won, F. Simon, G. B. Mohanty, G. Bonvicini, G. Pakhlova, G. Schnell, G. Tatishvili, G. Varner, H. Aihara, H. Farhat, H. Hayashii, H. J. Hyun, H. Kichimi, H. K. Park, H. Miyata, H. Park, H. Sahoo, I. Adachi, J. B. Kim, J. Brodzicka, J. B. Singh, J. Dalseno, J. E. Fast, J.-G. Shiu, J. Haba, J. H. Kang, J. H. Kim, J. Klucar, J. Li, J. S. Lange, J. Yamaoka, K. Chilikin, K. Cho, K. Dutta, K. E. Varvell, K. Inami, K. Kinoshita, K. Miyabayashi, K. 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Savinov, V. Zhilich, V. Zhulanov, W.-S. Hou, Y. B. Hsiung, Y. Choi, Y. Horii, Y. Hoshi, Y. J. Kim, Y.-J. Kwon, Y. Li, Y. M. Goh, Y. Sakai, Y. Sato, Y.-S. Sohn, Y. Teramoto, Y. Unno, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yook, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang, Z. Q. Liu","submitted_at":"2013-04-15T03:43:01Z","abstract_excerpt":"We report measurements of $B \\to \\chi_{c1} \\gamma K$ and $\\chi_{c2} \\gamma K$ decays using $772 \\times 10^{6}$ $B\\bar{B}$ events collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. Evidence of a new resonance in the $\\chi_{c1} \\gamma$ final state is found with a statistical significance of $3.8 \\sigma$. This state has a mass of $3823.1 \\pm 1.8 {(stat)} \\pm 0.7 {(syst)}$ MeV/$c^2$, a value that is consistent with theoretical expectations for the previously unseen $1^3 D_2$ $c\\bar{c}$ meson. 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