Study of high momentum $\eta^\prime$ production in $B \to \eta^\prime X_s

Study of high momentum $\eta^\prime$ production in $B \to \eta^\prime X_s

We measure the branching fraction for the charmless semi-inclusive process B -> eta' X_s, where the eta' meson has a momentum in the range 2.0 to 2.7 GeV/c in the Upsilon(4S) center-of-mass frame and X_s represents a system comprising a kaon and zero to four pions. We find B(B -> eta...

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Veröffentlicht in:Physical review letters 2004, Vol.93
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., Le Clerc, C., Levi, M.E., Lynch, G., Mir, L.M., Oddone, P.J., Orimoto, T.J., Pripstein, M., Roe, N.A., Ronan, M.T., Shelkov, V.G., Telnov, A.V., Wenzel, W.A., Ford, K., Harrison, T.J., Hawkes, C.M., Morgan, S.E., Watson, A.T., Watson, N.K., Fritsch, M., Goetzen, K., Held, T., Koch, H., Lewandowski, B., Pelizaeus, M., Peters, K., Schmücker, H., Steinke, M., Boyd, J.T., Chevalier, N., Cottingham, W.N., Kelly, M.P., Latham, T.E., Mackay, C., Wilson, F.F., Abe, K., Çuhadar-Dönszelmann, T., Hearty, C., Mattison, T.S., Mckenna, J.A., Thiessen, D., Kyberd, P., Mckemey, A.K., Teodorescu, L., Blinov, V.E., Bukin, A.D., 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.A., Mommsen, R.K., Röthel, W., Stoker, D.P.
Format: Artikel
Sprache:eng
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High Energy Physics - Experiment
Physics
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Zusammenfassung:We measure the branching fraction for the charmless semi-inclusive process B -> eta' X_s, where the eta' meson has a momentum in the range 2.0 to 2.7 GeV/c in the Upsilon(4S) center-of-mass frame and X_s represents a system comprising a kaon and zero to four pions. We find B(B -> eta' X_s)=(3.9+/-0.8(stat)+/-0.5(syst)+/-0.8(model)).10^{-4}. We also obtain the X_s mass distribution and find that it tends to favor models predicting high masses.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.93.061801