Search for the rare leptonic decay B--->tau-nutau

Search for the rare leptonic decay B--->tau-nutau

We present a search for the decay B(-)--> tau(-)nu(tau) in a sample of 88.9 x 10(6) BB pairs recorded with the BABAR detector at the Stanford Linear Accelerator Center B factory. One of the two B mesons from the Gamma(4S) is reconstructed in a hadronic or a semileptonic final state, and the decay...

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Veröffentlicht in:Physical review letters 2005-07, Vol.95 (4), p.041804
Hauptverfasser: Aubert, B, Barate, R, Boutigny, D, Couderc, F, Gaillard, J-M, Hicheur, A, Karyotakis, Y, Lees, J P, Tisserand, V, Zghiche, A, Palano, A, Pompili, A, Chen, J C, Qi, N D, Rong, G, Wang, P, Zhu, Y S, Eigen, G, Ofte, I, Stugu, B, Abrams, G S, Borgland, A W, Breon, A B, Brown, D N, Button-Shafer, J, Cahn, R N, Charles, E, Day, C T, Gill, M S, Gritsan, A V, Groysman, Y, Jacobsen, R G, Kadel, R W, Kadyk, J, Kerth, L T, Kolomensky, Yu G, Kukartsev, G, Lynch, G, Mir, L M, Oddone, P J, Orimoto, T J, Pripstein, M, Roe, N A, Ronan, M T, Shelkov, V G, Wenzel, W A, Barrett, M, Ford, K E, Harrison, T J, Hart, A J, Hawkes, C M, Morgan, S E, Watson, A T, Fritsch, M, Goetzen, K, Held, T, Koch, H, Lewandowski, B, Pelizaeus, M, Steinke, M, Boyd, J T, Chevalier, N, Cottingham, W N, Kelly, M P, Latham, T E, Wilson, F F, Cuhadar-Donszelmann, T, Hearty, C, Knecht, N S, Mattison, T S, McKenna, J A, Thiessen, D, Khan, A, Kyberd, P, Teodorescu, L, Blinov, A E, Blinov, V E, Druzhinin, V P, Golubev, V B, Ivanchenko, V N, Kravchenko, E A, Onuchin, A P, Serednyakov, S I, Skovpen, Yu I, Solodov, E P, Yushkov, A N, Best, D, Bruinsma, M, Chao, M, Eschrich, I, Kirkby, D, Lankford, A J, Mandelkern, M, Mommsen, R K, Roethel, W, Stoker, D P, Buchanan, C, Hartfiel, B L, Foulkes, S D, Gary, J W
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Sprache:eng
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Zusammenfassung:We present a search for the decay B(-)--> tau(-)nu(tau) in a sample of 88.9 x 10(6) BB pairs recorded with the BABAR detector at the Stanford Linear Accelerator Center B factory. One of the two B mesons from the Gamma(4S) is reconstructed in a hadronic or a semileptonic final state, and the decay products of the other B in the event are analyzed for consistency with a B(-) --> tau(-)nu(tau) decay. We find no evidence of a signal and set an upper limit on the branching fraction of B(B(-) --> tau(-) nu(tau)) < 4.2 x 10(-4) at the 90% confidence level.
ISSN:0031-9007