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  • Measurement of the branchin...
    Sato, Y.; Adamczyk, K.; Atmacan, H.; Ayad, R.; Babu, V.; Badhrees, I.; Bakich, A. M.; Bansal, V.; Behera, P.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bozek, A.; Bračko, M.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K.; Chobanova, V.; Choi, Y.; Doležal, Z.; Eidelman, S.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Goldenzweig, P.; Golob, B.; Greenwald, D.; Hara, T.; Hayasaka, K.; Hirose, S.; Horiguchi, T.; Itoh, R.; Iwasaki, Y.; Jaegle, I.; Jeon, H. B.; Julius, T.; Kang, K. H.; Kawasaki, T.; Kim, D. Y.; Kim, M. J.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Krokovny, P.; Li, L.; Li Gioi, L.; Libby, J.; Matvienko, D.; Mizuk, R.; Mohanty, G. B.; Moon, H. K.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Negishi, K.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Okuno, S.; Pal, B.; Park, C. -S.; Paul, S.; Pestotnik, R.; Purohit, M. V.; Rauch, J.; Sakai, Y.; Schlüter, T.; Schneider, O.; Schnell, G.; Seino, Y.; Shebalin, V.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Simon, F.; Stanič, S.; Starič, M.; Takizawa, M.; Tamponi, U.; Tenchini, F.; Trabelsi, K.; Vorobyev, V.; Wang, C. H.; Wang, M. -Z.; Wang, P.; Watanabe, Y.; Williams, K. M.; Won, E.; Yelton, J.; Yook, Y.; Yuan, C. Z.; Yusa, Y.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

    Physical review. D, 10/2016, Letnik: 94, Številka: 7
    Journal Article

    We report a measurement of the ratio R(D*) = B($\bar{B}$0→ D*+τ-$\bar{v}$τ )/B($\bar{B}$0→D*+ℓ-$\bar{v}$ℓ), where ℓ denotes an electron or a muon. The results are based on a data sample containing 772 × 106 B$\bar{B}$ pairs recorded at the (4S) resonance with the Belle detector at the KEKB e+e- collider. We select a sample of B0 $\bar{B}$0pairs by reconstructing both B mesons in semileptonic decays to D*∓ℓ±. We measure R(D*) = 0.302±0.030(stat) ±0.011(syst), which is within 1.6σ of the Standard Model theoretical expectation, where the standard deviation σ includes systematic uncertainties. We use this measurement to constrain several scenarios of new physics in a model-independent approach.