{"paper":{"title":"Measurement of the CP Violation Parameters in B0 -> pi+ pi- Decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Bala, A. Bay, A. Bondar, A. Bozek, A. Chen, A. Drutskoy, A. Frey, A. Ishikawa, A. J. Schwartz, A. Kuzmin, A. M. Bakich, A. Moll, A. Rostomyan, A. Sibidanov, A. Zupanc, B. Bhuyan, B. D. Yabsley, Belle Collaboration: J. Dalseno, B. G. Cheon, B. Golob, B. Kronenbitter, B. R. Ko, B. Shwartz, C. H. Wang, C. Kiesling, C. Liu, C. Ng, C. Niebuhr, C. P. Shen, C. Schwanda, C. Van Hulse, C. W. Park, C. Z. Yuan, D. Cinabro, D. Dutta, D. H. Kah, D. Liventsev, D. M. Asner, D. Matvienko, D. Semmler, D. Y. Kim, E. Kato, E. Nedelkovska, E. Solovieva, E. Won, F. Simon, G. B. Mohanty, G. Bonvicini, G. Pakhlova, G. Schnell, G. Tatishvili, G. Varner, H. Aihara, H. Farhat, H.-G. Moser, H. Hayashii, H. J. Hyun, H. J. Kim, H. Kawai, H. K. Park, H. Miyata, H. Park, H. Sahoo, H. Yamamoto, I. Adachi, J. B. Kim, J. E. Fast, J.-G. Shiu, J. Haba, J. H. Kim, J. Klucar, J. Li, J. Libby, K. Arinstein, K. Chilikin, K. Cho, K. Dutta, K. Hayasaka, K. Kinoshita, K. Miyabayashi, K. M. Williams, K. Prothmann, K. Senyo, K. Sumisawa, K. T. Kim, K. Trabelsi, L. E. Piilonen, L. Li Gioi, L. Santelj, M. Bra\\v{c}ko, M. Danilov, M. E. Sevior, M. Feindt, 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, N. K. Nisar, N. Muramatsu, O. Nitoh, O. Schneider, O. Seon, P. Behera, P. Chen, P. Kody\\v{s}, P. Kri\\v{z}an, P. Krokovny, P. Lukin, P. Pakhlov, P. Urquijo, P. Vanhoefer, P. Wang, R. Chistov, R. Gillard, R. Itoh, R. Mizuk, R. Mussa, R. Pestotnik, 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. Ryu, S. Sandilya, S. Stani\\v{c}, S. Uehara, S. Uno, S. Yashchenko, T.-A. Shibata, T. Aushev, T. E. Browder, T. Ferber, T. Hara, T. Higuchi, T. Iijima, T. Julius, T. Kawasaki, T. K. Pedlar, T. Mori, T. Saito, T. Sanuki, T. Sumiyoshi, T. Tsuboyama, T. Uglov, U. Tamponi, V. Aulchenko, V. Bhardwaj, V. Chekelian, V. Chobanova, V. Gaur, V. Savinov, V. Vorobyev, V. Zhilich, V. Zhulanov, W.-S. Hou, X. L. Wang, Y. Choi, Y. Hoshi, Y. Iwasaki, Y. J. Kim, Y.-J. Kwon, Y. Li, Y. M. Goh, Y. Nagasaka, Y. Sakai, Y.-S. Sohn, Y. Teramoto, Y. Unno, Y. Ushiroda, Y. Watanabe, Y. Yamashita, Y. Yook, Y. Yusa, Z. Dole\\v{z}al, Z. Dr\\'asal, Z. P. Zhang","submitted_at":"2013-02-03T23:45:45Z","abstract_excerpt":"We present a measurement of the time-dependent charge-parity (CP) violation parameters in B0 -> pi+ pi- decays. The results are obtained from the final data sample containing 772 million BBbar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the CP violation parameters Acp = +0.33 +/- 0.06 (stat) +/- 0.03 (syst) and Scp = -0.64 +/- 0.08 (stat) +/- 0.03 (syst), where Acp and Scp represent the direct and mixing-induced CP asymmetry, respectively. Using an isospin analysis including results from other Belle measurements, w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0551","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"}