Test of Lepton-Flavor Universality in B→K∗ℓ+ℓ− Decays at Belle

We present a measurement of R_{K^{*}}, the branching fraction ratio B(B→K^{*}μ^{+}μ^{-})/B(B→K^{*}e^{+}e^{-}), for both charged and neutral B mesons. The ratio for the charged case R_{K^{*+}} is the first measurement ever performed. In addition, we report absolute branching fractions for the individ...

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Bibliographic Details

Published in:	Physical review letters 2021-04, Vol.126 (16), p.161801, Article 161801
Main Authors:	Adachi, I., Asner, D. M., Atmacan, H., Aushev, T., Babu, V., Behera, P., Berger, M., Bhardwaj, V., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Chang, M.-C., Chen, A., Cheon, B. G., Chilikin, K., Choi, Y., Cunliffe, S., De Nardo, G., Dubey, S., Eidelman, S., Epifanov, D., Garmash, A., Guan, Y., Haba, J., Hartbrich, O., Higuchi, T., Hou, W.-S., Hsu, C.-L., Iijima, T., Inguglia, G., Itoh, R., Iwasaki, M., Iwasaki, Y., Joffe, D., Kahn, J., Kaliyar, A. B., Kim, D. Y., Kim, K. T., Kinoshita, K., Komarov, I., Korpar, S., Krokovny, P., Kuhr, T., Kumar, R., Kumara, K., Kuzmin, A., Liptak, Z., Liventsev, D., Luo, T., MacNaughton, J., Masuda, M., McNeil, J. T., Metzner, F., Mohanty, G. B., Moon, T. J., Nakao, M., Nayak, M., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Pakhlova, G., Popov, V., Prencipe, E., Resmi, P. K., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwartz, A. J., Senyo, K., Shapkin, M., Shiu, J.-G., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uno, S., Ushiroda, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vorobyev, V., Wang, X. L., Xu, X., Ye, H., Yin, J. H., Yuan, C. Z., Zhilich, V., Zhukova, V., Zhulanov, V.
Format:	Article
Language:	English
Subjects:	Flavor (particle physics) Leptons Mesons Standard model (particle physics)
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