1. First observation of B̄→D(*) ρ′-, ρ′-→ωπ
- Author
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Alexander, J. P., Bebek, C., Berger, B. E., Berkelman, K., Blanc, F., Boisvert, V., Cassel, D. G., Drell, P. S., Duboscq, J. E., Ecklund, K. M., Ehrlich, R., Gaidarev, P., Gibbons, L., Gittelman, B., Gray, S. W., Hartill, D. L., Heltsley, B. K., Hsu, L., Jones, C. D., Kandaswamy, J., Kreinick, D. L., Lohner, M., Magerkurth, A., Meyer, T. O., Mistry, N. B., Nordberg, E., Palmer, M., Patterson, J. R., Peterson, D., Riley, D., Romano, A., Schwarthoff, H., Thayer, J. G., Urner, D., Valant-Spaight, B., Viehhauser, G., Warburton, A., Avery, P., Prescott, C., Rubiera, A. I., Stoeck, H., Yelton, J., Brandenburg, G., Ershov, A., Kim, D. Y. -J, Wilson, R., Bergfeld, T., Eisenstein, B. I., Ernst, J., Gladding, G. E., Gollin, G. D., Hans, R. M., Johnson, E., Karliner, I., Marsh, M. A., Plager, C., Sedlack, C., Selen, M., Thaler, J. J., Williams, J., Edwards, K. W., Sadoff, A. J., Ammar, R., Alice Bean, Besson, D., Zhao, X., Anderson, S., Frolov, V. V., Kubota, Y., Lee, S. J., Poling, R., Smith, A., Stepaniak, C. J., Urheim, J., Ahmed, S., Alam, M. S., Athar, S. B., Jian, L., Ling, L., Saleem, M., Timm, S., Wappler, F., Anastassov, A., Eckhart, E., Gan, K. K., Gwon, C., Hart, T., Honscheid, K., Hufnagel, D., Kagan, H., Kass, R., Pedlar, T. K., Thayer, J. B., Toerne, E., Zoeller, M. M., Richichi, S. J., Severini, H., Skubic, P., Undrus, A., Savinov, V., Chen, S., Hinson, J. W., Lee, J., Miller, D. H., Shibata, E. I., Shipsey, I. P. J., Pavlunin, V., Cronin-Hennessy, D., Lyon, A. L., Thorndike, E. H., Coan, T. E., Fadeyev, V., Gao, Y. S., Maravin, Y., Narsky, I., Stroynowski, R., Ye, J., Wlodek, T., Artuso, M., Benslama, K., Boulahouache, C., Bukin, K., Dambasuren, E., Majumder, G., Mountain, R., Skwarnicki, T., Stone, S., Wang, J. C., Wolf, A., Kopp, S., Kostin, M., Mahmood, A. H., Csorna, S. E., Danko, I., Mclean, K. W., Xu, Z., Godang, R., Bonvicini, G., Cinabro, D., Dubrovin, M., Mcgee, S., Zhou, G. J., Bornheim, A., Lipeles, E., Pappas, S. P., Shapiro, A., Sun, W. M., Weinstein, A. J., Jaffe, D. E., Mahapatra, R., Masek, G., Paar, H. P., Asner, D. M., Eppich, A., Hill, T. S., Morrison, R. J., Briere, R. A., Chen, G. P., Ferguson, T., and Vogel, H.
- Abstract
We report on the observation of B̄→D*π+π-π-π 0 decays. The branching ratios for D*+ and D*0 are (1.72±0.14±0.24)% and (1.80±0.24±0.27)%, respectively. Each final state has a a D*ωπ- component, with branching ratios (0.29±0.03±0.04)% and (0.45±0.10±0.07)% for the D*+ and D*0 modes, respectively. We also observe B̄→Dωπ- decays. The branching ratios for D+ and D0 are (0.28±0.05±0.04)% and (0.41±0.07±0.06)%, respectively. A spin parity analysis of the ωπ- system in the Dωπ- final state shows a preference for a wide 1- resonance. A fit to the ωπ- mass spectrum finds a central mass of (1349 ±25-5+10) MeV and width of (547±86-45+46) MeV. We identify this object as the ρ(1450) or the ρ′. ©2001 The American Physical Society.
- Published
- 2001