{"paper":{"title":"Study of $\\pi^0$ pair production in single-tag two-photon collisions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Abdesselam, A. Bobrov, A. Bozek, A. Chen, A. Garmash, A. Ishikawa, A. Kuzmin, A. M. Bakich, A. Moll, A. Rostomyan, A. Sokolov, A. Vinokurova, A. Vossen, A. Zupanc, B. Bhuyan, B. G. Cheon, B. G. Fulsom, B. Golob, B. Pal, B. R. Ko, B. Shwartz, C. C. Zhang, C. H. Wang, C. Li, C. P. Shen, C. Schwanda, C. Van Hulse, C. W. Park, D. Cinabro, D. Dutta, D. Epifanov, D. H. Lee, D. Joffe, D. Liventsev, D. M. Asner, D. Matvienko, D. \\v{C}ervenkov, D. Y. Kim, E. Barberio, E. Kato, E. Nakano, E. Ribe\\v{z}l, E. Solovieva, E. Won, F. Simon, G. B. Mohanty, G. Bonvicini, G. Pakhlova, G. Schnell, G. Varner, H. Aihara, H. Atmacan, H. Farhat, H. Hayashii, H. K. Moon, H. Miyata, H. Nakazawa, H. Park, H. Ye, I. Adachi, I. Badhrees, I. Jaegle, I. S. Lee, J. Biswal, J. B. Kim, J. Dalseno, J. Dingfelder, J. E. Fast, J. -G. Shiu, J. Haba, J. H. Kim, J. Libby, J. Rauch, J. S. Lange, J. Yamaoka, K. Chilikin, K. Cho, K. Hayasaka, K. H. Kang, K. Inami, K. K. Joo, K. Miyabayashi, K. M. Williams, K. Senyo, K. Tanida, K. T. Kim, L. E. Piilonen, L. Li, L. Santelj, 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. Stari\\v{c}, M. Sumihama, M. -Z. Wang, N. Dash, N. Gabyshev, N. K. Nisar, O. Schneider, O. Seon, P. Behera, P. Goldenzweig, P. Kri\\v{z}an, P. Krokovny, P. Lukin, P. Pakhlov, P. Vanhoefer, P. Wang, R. Chistov, R. Gillard, R. Glattauer, R. Itoh, R. Mizuk, R. Mussa, R. Pestotnik, S. Al Said, S. Eidelman, S. H. Kim, S. -K. Choi, S. Korpar, S. Mohanty, S. Nishida, S. Ogawa, S. Sandilya, S. Uehara, S. Uno, S. Yashchenko, T. -A. Shibata, T. Aushev, T. E. Browder, T. Ferber, The Belle Collaboration: M. Masuda, T. Iijima, T. Julius, T. Kawasaki, T. K. Pedlar, T. Kumita, T. Mori, T. Nanut, T. Sanuki, T. Sumiyoshi, T. Uglov, U. Tamponi, V. Aulchenko, V. Babu, V. Chekelian, V. Chobanova, V. Gaur, V. Savinov, V. Shebalin, V. Vorobyev, V. Zhilich, V. Zhulanov, W. -S. Hou, X. H. He, Y. Choi, Y. Iwasaki, Y. J. Kim, Y. -J. Kwon, Y. Li, Y. M. Goh, Y. Sato, Y. Seino, Y. -S. Sohn, Y. Teramoto, Y. Unno, Y. Watanabe, Y. Yamashita, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. Natkaniec, Z. P. Zhang","submitted_at":"2015-08-27T09:10:20Z","abstract_excerpt":"We report a measurement of the differential cross section of $\\pi^0$ pair production in single-tag two-photon collisions, $\\gamma^* \\gamma \\to \\pi^0 \\pi^0$, in $e^+ e^-$ scattering. The cross section is measured for $Q^2$ up to 30 GeV$^2$, where $Q^2$ is the negative of the invariant mass squared of the tagged photon, in the kinematic range 0.5 GeV < W < 2.1 GeV and $|\\cos \\theta^*|$ < 1.0 for the total energy and pion scattering angle, respectively, in the $\\gamma^* \\gamma$ center-of-mass system. The results are based on a data sample of 759 fb$^{-1}$ collected with the Belle detector at the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.06757","kind":"arxiv","version":2},"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"}