| Title | Measurements of isospin asymmetry and difference of direct CP asymmetries in inclusive B -> X-s gamma decays |
| Authors | Watanuki, S. Ishikawa, A. Adachi, I Aihara, H. Al Said, S. Asner, D. M. Aushev, T. Ayad, R. Babu, V Badhrees, I Bakich, A. M. Bansal, V Behera, P. Beleno, C. Berger, M. Bhardwaj, V Bhuyan, B. Bilka, T. Biswal, J. Bobrov, A. Bonvicini, G. Bozek, A. Bracko, M. Browder, T. E. Cao, L. Cervenkov, D. Chang, P. Cheon, B. G. Chilikin, K. Cho, K. Choi, Y. Choudhury, S. Cinabro, D. Cunliffe, S. Di Carlo, S. Dingfelder, J. Dong, T., V Eidelman, S. Epifanov, D. Fast, J. E. Ferber, T. Frey, A. Fulsom, B. G. Gaur, V Gabyshev, N. Garmash, A. Gelb, M. Giri, A. Goldenzweig, P. Guan, Y. Guido, E. Haba, J. Hayasaka, K. Hayashii, H. Hou, W-S Iijima, T. Inami, K. Inguglia, G. Itoh, R. Iwasaki, M. Iwasaki, Y. Jacobs, W. W. Jaegle, I Jeon, H. B. Jia, S. Jin, Y. Joo, K. K. Julius, T. Karyan, G. Kawasaki, T. Kiesling, C. Kim, D. Y. Kim, J. B. Kim, S. H. Kinoshita, K. Kodys, P. Korpar, S. Kotchetkov, D. Krizan, P. Kroeger, R. Krokovny, P. Kuhr, T. Kumar, R. Kuzmin, A. Kwon, Y-J Lee, I. S. Lee, S. C. Li, L. K. Li, Y. B. Li Gioi, L. Libby, J. Liventsev, D. Lubej, M. Luo, T. Masuda, M. Matsuda, T. Merola, M. Miyabayashi, K. Miyata, H. Mizuk, R. Mohanty, G. B. Mori, T. Nakao, M. Nanut, T. Nath, K. J. Niiyama, M. Nishida, S. Nishimura, K. Ogawa, K. Ogawa, S. Okuno, S. Ono, H. Ostrowicz, W. Pakhlov, P. Pakhlova, G. Pal, B. Park, H. Paul, S. Pedlar, T. K. Pestotnik, R. Piilonen, L. E. Prencipe, E. Ritter, M. Rostomyan, A. Russo, G. Sakai, Y. Sandilya, S. Santelj, L. Savinov, V Schneider, O. Schnell, G. Schueler, J. Schwanda, C. Schwartz, A. J. Seino, Y. Senyo, K. Seon, O. Shebalin, V Shibata, T-A Shiu, J-G Shwartz, B. Sokolov, A. Solovieva, E. Stanic, S. Staric, M. Sumiyoshi, T. Sutcliffe, W. Takizawa, M. Tanida, K. Taniguchi, N. Tenchini, F. Uchida, M. Uglov, T. Unno, Y. Uno, S. Vahsen, S. E. Van Hulse, C. Van Tonder, R. Varner, G. Varvell, K. E. Vossen, A. Wang, B. Wang, C. H. Wang, M-Z Wang, P. Watanabe, M. Widmann, E. Won, E. Ye, H. Yin, J. H. Yusa, Y. Zakharov, S. Zhang, Z. P. Zhilich, V Zhukova, V Zhulanov, V Zupanc, A. |
| Affiliation | Univ Basque Country, UPV EHU, Bilbao 48080, Spain Beihang Univ, Beijing 100191, Peoples R China Univ Bonn, D-53115 Bonn, Germany Brookhaven Natl Lab, Upton, NY 11973 USA SB RAS, Budker Inst Nucl Phys, Novosibirsk 630090, Russia Charles Univ Prague, Fac Math & Phys, CR-12116 Prague, Czech Republic Chonnam Natl Univ, Kwangju 660701, South Korea Univ Cincinnati, Cincinnati, OH 45221 USA DESY, D-22607 Hamburg, Germany Duke Univ, Durham, NC 27708 USA Univ Florida, Gainesville, FL 32611 USA Fudan Univ, Key Lab Nucl Phys & Ionbeam Applicat MOE, Shanghai 200443, Peoples R China Fudan Univ, Inst Modern Phys, Shanghai 200443, Peoples R China Georg August Univ Gottingen, Phys Inst 2, D-37073 Gottingen, Germany Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan Hanyang Univ, Seoul 133791, South Korea Univ Hawaii, Honolulu, HI 96822 USA High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan High Energy Accelerator Res Org KEK, KEK Theory Ctr, J PARC Branch, Tsukuba, Ibaraki 3050801, Japan Forschungszentrum Julich, D-52425 Julich, Germany Basque Fdn Sci, IKERBASQUE, Bilbao 48013, Spain Indian Inst Sci Educ & Res Mohali, Mohali 140306, India Indian Inst Technol, Gauhati 781039, Assam, India Indian Inst Technol, Hyderabad 502285, Telangana, India Indian Inst Technol, Madras 600036, Chennai, India Indiana Univ, Bloomington, IN 47408 USA Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China Inst High Energy Phys, A-1050 Vienna, Austria Inst High Energy Phys, Protvino 142281, Russia INFN, Sez Napoli, I-80126 Naples, Italy INFN, Sez Torino, I-10125 Turin, Italy Japan Atom Energy Agcy, Adv Sci Res Ctr, Naka, Ibaraki 3191195, Japan JStefan Inst, Ljubljana 1000, Slovenia Kanagawa Univ, Yokohama, Kanagawa 2218686, Japan Karlsruher Inst Technol, Inst Expt Teilchenphys, D-76131 Karlsruhe, Germany King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia King Abdulaziz Univ, Fac Sci, Dept Phys, Jeddah 21589, Saudi Arabia Kitasato Univ, Tokyo 1080072, Japan Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea Korea Univ, Seoul 136713, South Korea Kyoto Univ, Kyoto 6068502, Japan Kyungpook Natl Univ, Daegu 702701, South Korea Univ Paris Saclay, Univ Paris Sud, LAL, CNRS,IN2P3, Orsay, France Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany Luther Coll, Decorah, IA 52101 USA Univ Maribor, Maribor 2000, Slovenia Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia Univ Mississippi, University, MS 38677 USA Univ Miyazaki, Miyazaki 8892192, Japan Moscow Phys Engn Inst, Moscow 115409, Russia Moscow Inst Phys & Technol, Moscow 141700, Russia Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648602, Japan Nagoya Univ, Kobayashi Maskawa Inst, Nagoya, Aichi 4648602, Japan Univ Napoli Federico II, I-80055 Naples, Italy Nara Womens Univ, Nara 6308506, Japan Natl United Univ, Miaoli 36003, Taiwan Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland Nippon Dent Univ, Niigata 9518580, Japan Niigata Univ, Niigata 9502181, Japan Univ Nova Gorica, Nova Gorica 5000, Slovenia Novosibirsk State Univ, Novosibirsk 630090, Russia Osaka City Univ, Osaka 5588585, Japan Pacific Northwest Natl Lab, Richland, WA 99352 USA Peking Univ, Beijing 100871, Peoples R China Univ Pittsburgh, Pittsburgh, PA 15260 USA Punjab Agr Univ, Ludhiana 141004, Punjab, India RIKEN, Theoret Res Div, Nishina Ctr, Saitama 3510198, Japan Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China Showa Pharmaceut Univ, Tokyo 1948543, Japan Soongsil Univ, Seoul 156743, South Korea Stefan Meyer Inst Subat Phys, A-1090 Vienna, Austria Sungkyunkwan Univ, Suwon 440746, South Korea Univ Sydney, Sch Phys, Sydney, NSW 2006, Australia Univ Tabuk, Fac Sci, Dept Phys, Tabuk 71451, Saudi Arabia Tata Inst Fundamental Res, Mumbai 400005, India Tech Univ Munich, Dept Phys, D-85748 Garching, Germany Toho Univ, Funabashi, Chiba 2748510, Japan Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan Univ Tokyo, Earthquake Res Inst, Tokyo 1130032, Japan Univ Tokyo, Dept Phys, Tokyo 1130033, Japan Tokyo Inst Technol, Tokyo 1528550, Japan Tokyo Metropolitan Univ, Tokyo 1920397, Japan Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA Wayne State Univ, Detroit, MI 48202 USA Yamagata Univ, Yamagata 9908560, Japan Yonsei Univ, Seoul 120749, South Korea |
| Issue Date | 2019 |
| Publisher | PHYSICAL REVIEW D |
| Abstract | We report measurements of isospin asymmetry Delta(0-) and difference of direct CP asymmetries Delta A(CP) between charged and neutral B -> X-s gamma decays. This analysis is based on the data sample containing 772 x 10(6)B (B) over bar pairs that was collected with the Belle detector at the KEKB energy-asymmetric ethornecollider. Using a sum-of-exclusive technique with invariant X-s mass up to 2.8 GeV= c2, we obtain Delta(0-) = [0.48 +/- 1.49(stat) +/- 0.97(syst) +/- 1.15(f(+-)/f(00))]% and Delta A(CP) = [+3.69 +/- 2.65(stat) +/- 0.76(syst)]%, where the last uncertainty for.0-is due to the uncertainty on the production ratio of B+B- to B-0(B) over bar (0) in.o4Sthorn decays. The measured value of Delta(0-) is consistent with zero, allowing us to constrain the resolved photon contribution in the B -> X-s gamma, and improve the branching fraction prediction. The result for Delta A(CP) is consistent with the prediction of the SM. We also measure the direct CP asymmetries for charged and neutral B -> X-s gamma decays. All the measurements are the most precise to date. |
| URI | http://hdl.handle.net/20.500.11897/550593 |
| ISSN | 2470-0010 |
| DOI | 10.1103/PhysRevD.99.032012 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 待认领 |
