Measurement of the Ratio of Branching Fractions B ( B c + → J / ψ τ + ν τ ) / B ( B c + → J / ψ μ + ν μ )

A measurement is reported of the ratio of branching fractions R(J/ψ)=B(B_{c}^{+}→J/ψτ^{+}ν_{τ})/B(B_{c}^{+}→J/ψμ^{+}ν_{μ}), where the τ^{+} lepton is identified in the decay mode τ^{+}→μ^{+}ν_{μ}ν[over ¯]_{τ}. This analysis uses a sample of proton-proton collision data corresponding to 3.0  fb^{-1}...

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Bibliographic Details

Published in:	Physical review letters 2018-03, Vol.120 (12), p.121801, Article 121801
Main Authors:	Akar, S., Amerio, S., Babuschkin, I., Bachmann, S., Baesso, C., Barsuk, S., Barter, W., Bay, A., Bel, L. J., Belous, K., Ben-Haim, E., Berninghoff, D., Betancourt, C., Blanc, F., Bocci, V., Bondar, A., Bossu, F., Bursche, A., Cattaneo, M., Cheung, S. F., Ciezarek, G., Comerma-Montells, A., Coombs, G., Corti, G., Eisenhardt, S., Eklund, L., Ely, S., Falabella, A., Fazzini, D., Fini, R. A., Frank, M., Gallas Torreira, A., Gallorini, S., Gandini, P., Gersabeck, E., Govorkova, E., Grabowski, J. P., Guz, Yu, Heß, M., Hu, W., Huard, Z. C., Hulsbergen, W., Idzik, M., Kandybei, S., Karodia, S., Khairullin, E., Klimaszewski, K., Klimkovich, T., Kolpin, M., Koppenburg, P., Krokovny, P., Lacarrere, D., Lanfranchi, G., Li, T., Lionetto, F., Macko, V., Maguire, K., Mancinelli, G., Marconi, U., Massafferri, A., McNab, A., Merli, A., Morgunova, O., Moron, J., Müller, K., Nandi, A., Neubert, S., Nikitin, N., Ossowska, A., Pikies, M., Pisani, F., Piucci, A., Plo Casasus, M., Polci, F., Prisciandaro, J., Reichert, S., Ricciardi, S., Rinnert, K., Rodrigues, A. B., Ruiz Vidal, J., Santamarina Rios, C., Sarti, A., Schellenberg, M., Schmelling, M., Shevchenko, V., Silva Coutinho, R., Simone, S., Smith, E., Smith, J., Stefko, P., Stemmle, S., Szumlak, T., Tayduganov, A., Tomassetti, L., Vacca, C., Vieira, D., Volkov, V., Waldi, R., Yuan, X., Zheng, Y.
Format:	Article
Language:	English
Subjects:	Decay Large Hadron Collider Leptons Luminosity Particle collisions Standard deviation
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