Accès ouvert déclaré
2016
preprint
Lepton-Flavor-Dependent Angular Analysis of $B\to K^\ast \ell^+\ell^-$
Belle Collaboration, S. Wehle, C. Niebuhr, S. Yashchenko, I Adachi, H Aihara, S. Al Said, D. M. Asner, V M Aulchenko, T. Aushev, R Ayad, T. Aziz, V. Babu, A. M. Bakich, V. Bansal, E. Barberio, W. Bartel, P. Behera, B. Bhuyan, J. Biswal, A. Bobrov, A E Bondar, G Bonvicini, A. Bozek, M Bračko, T. E. Browder, D. Červenkov, P. Chang, V. Chekelian, A. Chen, B. G. Cheon, K Chilikin, R. Chistov, K. Cho, Y. Choi, D. Cinabro, N. Dash, J Dingfelder, Z. Drásal, D Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T Ferber, B. G. Fulsom, V Gaur, N. Gabyshev, A. Garmash, R. Gillard, P. Goldenzweig, B. Golob, O. Grzymkowska, E. Guido, J. Haba, T. Hara, K Hayasaka, H Hayashii, M. T. Hedges, W.-S. Hou, Hsu Cf, T Iijima, K Inami, G. Inguglia, A Ishikawa, R Itoh, Y. Iwasaki, W W Jacobs, I. Jaegle, H. B. Jeon, Y. Jin, D. Joffe, K. K. Joo, T. Julius, A. B. Kaliyar, K. H. Kang, G Karyan, P. Katrenko, T. Kawasaki, H. Kichimi, C Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, K. T. Kim, M. J. Kim, S. H. Kim, K Kinoshita, L. Koch, P Kodyš, S. Korpar, D. Kotchetkov, P Križan, P. Krokovny, T Kuhr, R. Kulasiri, T. Kumita, A Kuzmin, Y. Kwon, J. S. Lange, C. H. Li, L. Li, Y. Li, L. Li Gioi, J Libby, M. Lubej, T. Luo, M Masuda, T Matsuda, K. Miyabayashi, H Miyake, R Mizuk, G. B. Mohanty, T. Mori, R Mussa, E. Nakano, M Nakao, T Nanut, K. J. Nath, Z Natkaniec, M Akshatha Nayak, N. K. Nisar, S Nishida, S Ogawa, H Ono, Y Onuki, G Pakhlova, B. Pal, C. -S. Park, H. Park, H. Park, S. Paul, L. Pesántez, L. E. Piilonen, C. Pulvermacher, J. Rauch, M. Ritter, A Rostomyan, Y Sakai, S Sandilya, L Santelj, T. Sanuki, Y. Sato, V Savinov, T. Schlüter, O. Schneider, G Schnell, C. Schwanda, A. J. Schwartz, Y Seino, K Senyo, O. Seon, I. S. Seong, M. E. Sevior, C-K Shen, T. -A. Shibata, J. -G. Shiu, B. Shwartz, F Simon, R. Sinha, E Solovieva, M Starič, J.F. Strube, K. Sumisawa, T Sumiyoshi, M Takizawa, U Tamponi, F. Tenchini, T. Tsuboyama, M Uchida, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, S. E. Vahsen, C. Van Hulse, G. Varner, K. E. Varvell, V Vorobyev, A. Vossen, E. Waheed, M.-Z. Wang, P. Wang, P. Wang, M. Watanabe, Y. Watanabe, E Widmann, K. M. Williams, E. Won, H. Yamamoto, Y. Yamashita, H. Ye, Y. Yook, CS Yuan, Y Yusa, Z. P. Zhang, V. Zhilich, V. Zhukova, V. Zhulanov, M. Ziegler, A. Zupanc
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Le résumé fourni par la source
We present a measurement of angular observables and a test of lepton flavor universality in the $B\to K^\ast \ell^+\ell^-$ decay, where $\ell$ is either $e$ or $\mu$. The analysis is performed on a data sample corresponding to an integrated luminosity of $711~\mathrm{fb}^{-1}$ containing $772\times 10^{6}$ $B\bar B$ pairs, collected at the $\Upsilon(4S)$ resonance with the Belle detector at the asymmetric-energy $e^+e^-$ collider KEKB. The result is consistent with Standard Model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of $2.6\sigma$. NUMERICAL VALUES HAVE BEEN DIGITISED FROM THE PAPER.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Particle physics theoretical and experimental studiesComputational Physics and Python ApplicationsParticle Accelerators and Free-Electron Lasers