Precision measurement of the ${\cal B}(Υ(3S)\toτ^+τ^-)/{\cal B}(Υ(3S)\toμ^+μ^-)$ ratio
Creators: name: Lees, J. P.
name: Poireau, V.
name: Tisserand, V.
name: Grauges, E.
name: Palano, A.
name: Eigen, G.
name: Brown, D. N.
name: Kolomensky, Yu. G.
name: Fritsch, M.
name: Koch, H.
name: Schroeder, T.
name: Cheaib, R.
name: Hearty, C.
name: Mattison, T. S.
name: McKenna, J. A.
name: So, R. Y.
name: Blinov, V. E.
name: Buzykaev, A. R.
name: Druzhinin, V. P.
name: Golubev, V. B.
name: Kozyrev, E. A.
name: Kravchenko, E. A.
name: Onuchin, A. P.
name: Serednyakov, S. I.
name: Skovpen, Yu. I.
name: Solodov, E. P.
name: Todyshev, K. Yu.
name: Lankford, A. J.
name: Dey, B.
name: Gary, J. W.
name: Long, O.
name: Eisner, A. M.
name: Lockman, W. S.
name: Vazquez, W. Panduro
name: Chao, D. S.
name: Cheng, C. H.
name: Echenard, B.
name: Flood, K. T.
name: Hitlin, D. G.
name: Kim, J.
name: Li, Y.
name: Lin, D. X.
name: Miyashita, T. S.
name: Ongmongkolkul, P.
name: Oyang, J.
name: Porter, F. C.
name: Röhrken, M.
name: Huard, Z.
name: Meadows, B. T.
name: Pushpawela, B. G.
name: Sokoloff, M. D.
name: Sun, L.
name: Smith, J. G.
name: Wagner, S. R.
name: Bernard, D.
name: Verderi, M.
name: Bettoni, D.
name: Bozzi, C.
name: Calabrese, R.
name: Cibinetto, G.
name: Fioravanti, E.
name: Garzia, I.
name: Luppi, E.
name: Santoro, V.
name: Calcaterra, A.
name: de Sangro, R.
name: Finocchiaro, G.
name: Martellotti, S.
name: Patteri, P.
name: Peruzzi, I. M.
name: Piccolo, M.
name: Rotondo, M.
name: Zallo, A.
name: Passaggio, S.
name: Patrignani, C.
name: Shuve, B. J.
name: Lacker, H. M.
name: Bhuyan, B.
name: Mallik, U.
name: Chen, C.
name: Cochran, J.
name: Prell, S.
name: Gritsan, A. V.
name: Arnaud, N.
name: Davier, M.
name: Diberder, F. Le
name: Lutz, A. M.
name: Wormser, G.
name: Lange, D. J.
name: Wright, D. M.
name: Coleman, J. P.
name: Gabathuler, E.
name: Hutchcroft, D. E.
name: Payne, D. J.
name: Touramanis, C.
name: Bevan, A. J.
name: Di Lodovico, F.
name: Sacco, R.
name: Cowan, G.
name: Banerjee, Sw.
name: Brown, D. N.
name: Davis, C. L.
name: Denig, A. G.
name: Gradl, W.
name: Griessinger, K.
name: Hafner, A.
name: Schubert, K. R.
name: Barlow, R. J.
name: Lafferty, G. D.
name: Cenci, R.
name: Jawahery, A.
name: Roberts, D. A.
name: Cowan, R.
name: Robertson, S. H.
name: Seddon, R. M.
name: Neri, N.
name: Palombo, F.
name: Cremaldi, L.
name: Godang, R.
name: Summers, D. J.
name: Taras, P.
name: De Nardo, G.
name: Sciacca, C.
name: Raven, G.
name: Jessop, C. P.
name: LoSecco, J. M.
name: Honscheid, K.
name: Kass, R.
name: Gaz, A.
name: Margoni, M.
name: Posocco, M.
name: Simi, G.
name: Simonetto, F.
name: Stroili, R.
name: Akar, S.
name: Ben-Haim, E.
name: Bomben, M.
name: Bonneaud, G. R.
name: Calderini, G.
name: Chauveau, J.
name: Marchiori, G.
name: Ocariz, J.
name: Biasini, M.
name: Manoni, E.
name: Rossi, A.
name: Batignani, G.
name: Bettarini, S.
name: Carpinelli, M.
name: Casarosa, G.
name: Chrzaszcz, M.
name: Forti, F.
name: Giorgi, M. A.
name: Lusiani, A.
name: Oberhof, B.
name: Paoloni, E.
name: Rama, M.
name: Rizzo, G.
name: Walsh, J. J.
name: Zani, L.
name: Smith, A. J. S.
name: Anulli, F.
name: Faccini, R.
name: Ferrarotto, F.
name: Ferroni, F.
name: Pilloni, A.
name: Piredda, G.
name: Bünger, C.
name: Dittrich, S.
name: Grünberg, O.
name: Heß, M.
name: Leddig, T.
name: Voß, C.
name: Waldi, R.
name: Adye, T.
name: Wilson, F. F.
name: Emery, S.
name: Vasseur, G.
name: Aston, D.
name: Cartaro, C.
name: Convery, M. R.
name: Dorfan, J.
name: Dunwoodie, W.
name: Ebert, M.
name: Field, R. C.
name: Fulsom, B. G.
name: Graham, M. T.
name: Hast, C.
name: Innes, W. R.
name: Kim, P.
name: Leith, D. W. G. S.
name: Luitz, S.
name: MacFarlane, D. B.
name: Muller, D. R.
name: Neal, H.
name: Ratcliff, B. N.
name: Roodman, A.
name: Sullivan, M. K.
name: Va'vra, J.
name: Wisniewski, W. J.
name: Purohit, M. V.
name: Wilson, J. R.
name: Randle-Conde, A.
name: Sekula, S. J.
name: Ahmed, H.
name: Bellis, M.
name: Burchat, P. R.
name: Puccio, E. M. T.
name: Alam, M. S.
name: Ernst, J. A.
name: Gorodeisky, R.
name: Guttman, N.
name: Peimer, D. R.
name: Soffer, A.
name: Spanier, S. M.
name: Ritchie, J. L.
name: Schwitters, R. F.
name: Izen, J. M.
name: Lou, X. C.
name: Bianchi, F.
name: De Mori, F.
name: Filippi, A.
name: Gamba, D.
name: Lanceri, L.
name: Vitale, L.
name: Martinez-Vidal, F.
name: Oyanguren, A.
name: Albert, J.
name: Beaulieu, A.
name: Bernlochner, F. U.
name: King, G. J.
name: Kowalewski, R.
name: Lueck, T.
name: Nugent, I. M.
name: Roney, J. M.
name: Sibidanov, A.
name: Sobie, R. J.
name: Tasneem, N.
name: Gershon, T. J.
name: Harrison, P. F.
name: Latham, T. E.
name: Prepost, R.
name: Wu, S. L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We report on a precision measurement of the ratio ${\cal R}_{τμ}^{Υ(3S)} = {\cal B}(Υ(3S)\toτ^+τ^-)/{\cal B}(Υ(3S)\toμ^+μ^-)$ using data collected with the BaBar detector at the SLAC PEP-II $e^+e^-$ collider. The measurement is based on a 28 fb$^{-1}$ data sample collected at a center-of-mass energy of 10.355 GeV corresponding to a sample of 122 million $Υ(3S)$ mesons. The ratio is measured to be ${\cal R}_{τμ}^{Υ(3S)} = 0.966 \pm 0.008_\mathrm{stat} \pm 0.014_\mathrm{syst}$ and is in agreement with the Standard Model prediction of 0.9948 within 2 standard deviations. The uncertainty in ${\cal R}_{τμ}^{Υ(3S)}$ is almost an order of magnitude smaller than the only previous measurement.
description: 8 pages, 4 figures, 3 tables