{"paper":{"title":"Observation of an alternative $\\chi_{c0}(2P)$ candidate in $e^+ e^- \\rightarrow J/\\psi D \\bar{D}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Bobrov, A. Bondar, A. Bozek, A. Chen, A. Garmash, A. Ishikawa, A. Kuzmin, A. M. Bakich, A. Sokolov, A. Vinokurova, A. Vossen, A. Zupanc, B. Bhuyan, Belle Collaboration: K. Chilikin, B. G. Cheon, B. G. Fulsom, B. Pal, C. H. Wang, C. P. Shen, C. Pulvermacher, C. Schwanda, C. Van Hulse, C. Z. Yuan, D. Besson, D. Cinabro, D. Dutta, D. Joffe, D. Kotchetkov, D. Liventsev, D. M. Asner, D. Matvienko, D. \\v{C}ervenkov, D. Y. Kim, E. Barberio, E. Nakano, E. Solovieva, E. Widmann, E. Won, F. Tenchini, G. B. Mohanty, G. Karyan, G. Pakhlova, G. Schnell, G. Varner, H. Aihara, H. B. Jeon, H. Farhat, H. J. Kim, H. K. Moon, H. Miyata, H. Ono, H. Park, H. Sahoo, H. Yamamoto, H. Ye, I. Adachi, I. Badhrees, I. Jaegle, J. Biswal, J. B. Kim, J. E. Fast, J.-G. Shiu, J. Haba, J. Libby, J. S. Lange, K. Cho, K. Hayasaka, K. H. Kang, K. Inami, K. J. Nath, K. Kinoshita, K. K. Joo, K. Miyabayashi, K. Senyo, K. Tanida, K. T. Kim, K. Trabelsi, L. E. Piilonen, L. Li, L. Li Gioi, L. Santelj, M. Bra\\v{c}ko, M. E. Sevior, M. J. Kim, M. Lubej, M. Masuda, M. Nakao, M. Nayak, M. Niiyama, M. Ritter, M. Salehi, M. Stari\\v{c}, M. Takizawa, M. Uchida, M. Watanabe, M.-Z. Wang, N. Dash, N. Gabyshev, N. K. Nisar, O. Schneider, O. Seon, P. Goldenzweig, P. Katrenko, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Pakhlov, P. Wang, R. Ayad, R. Gillard, R. Itoh, R. Kulasiri, R. Mizuk, R. Mussa, R. Pestotnik, S. Al Said, S. Di Carlo, S. Eidelman, S. H. Kim, S. Korpar, S. L. Olsen, S. Nishida, S. Ogawa, S. Okuno, S. Pardi, S. Paul, S. Sandilya, S. Uehara, S. Uno, T.-A. Shibata, T. E. Browder, T. Ferber, T. Hara, T. Julius, T. Kuhr, T. Luo, T. Matsuda, T. Mori, T. Nanut, T. Sanuki, T. Sumiyoshi, T. Uglov, U. Tamponi, V. Aulchenko, V. Babu, V. Bansal, V. Bhardwaj, V. Chekelian, V. Gaur, V. Shebalin, V. Zhilich, V. Zhulanov, W.-S. Hou, W. W. Jacobs, Y. Choi, Y. Iwasaki, Y. Jin, Y. J. Kim, Y.-J. Kwon, Y. Sakai, Y. Seino, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang","submitted_at":"2017-04-06T14:51:00Z","abstract_excerpt":"We perform a full amplitude analysis of the process $e^+ e^- \\rightarrow J/\\psi D \\bar{D}$, where $D$ refers to either $D^0$ or $D^+$. A new charmoniumlike state $X^*(3860)$ that decays to $D \\bar{D}$ is observed with a significance of $6.5\\sigma$. Its mass is ($3862^{+26}_{-32}{}^{+40}_{-13}$) MeV/$c^2$ and width is ($201^{+154}_{-67}{}^{+88}_{-82}$) MeV. The $J^{PC}=0^{++}$ hypothesis is favored over the $2^{++}$ hypothesis at the level of $2.5\\sigma$. The analysis is based on the 980 $\\mathrm{fb}^{-1}$ data sample collected by the Belle detector at the asymmetric-energy $e^+ e^-$ collider K"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01872","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}