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First observation of the decay ≡c+→≡0e+νe and an estimate of the ≡c+c0 lifetime ratio

Alexander, J. et al. (1995) First observation of the decay ≡c+→≡0e+νe and an estimate of the ≡c+c0 lifetime ratio. Physical Review Letters, 74 (16). pp. 3113-3117. ISSN 0031-9007 (doi:10.1103/PhysRevLett.74.3113)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevLett.74.3113

Abstract

Using the CLEO II detector at the Cornell Electron Storage Ring we have observed the decay modes ≡c+→≡0e+νe and ≡c0→ ≡-e+Ve by the detection of a ≡-positron pair of appropriate invariant mass. We find B(≡c+→≡0e+νe)σ(e+e-→≡c+X) = 1.55±0.33±0.25 pb, B(≡c0→≡-e+νe)σ(e+e-→≡c0X) = 0.63±0.12±0.10 pb, B(≡c+→≡-π+π+)/B(≡c+→≡0e+νe) = 0.44±0.11-0.06+0.11, and B(≡c0→≡-π+)/B(≡c0→≡-e+νe) = 0.32±0.10-0.03+0.05. Assuming the ≡c+ and ≡c0 are equally produced in e+e- annihilation events at 10 GeV, the lifetime ratio of ≡c+/≡c0 is measured to be 2.46±0.70-0.23+0.33.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Britton, Prof David
Authors: Alexander, J., Bebek, C., Berkelman, K., Bloom, K., Browder, T., Cassel, D., Cho, H., Coffman, D., Crowcroft, D., Drell, P., Dumas, D., Ehrlich, R., Gaidarev, P., Garcia-Sciveres, M., Geiser, B., Gittelman, B., Gray, S., Hartill, D., Heltsley, B., Henderson, S., Jones, C., Jones, S., Kandaswamy, J., Katayama, N., Kim, P., Kreinick, D., Ludwig, G., Masui, J., Mevissen, J., Mistry, N., Ng, C., Nordberg, E., Patterson, J., Peterson, D., Riley, D., Salman, S., Sapper, M., Würthwein, F., Avery, P., Freyberger, A., Rodriguez, J., Yang, S., Yelton, J., Cinabro, D., Liu, T., Saulnier, M., Wilson, R., Yamamoto, H., Bergfeld, T., Eisenstein, B., Gollin, G., Ong, B., Palmer, M., Selen, M., Thaler, J., Edwards, K., Ogg, M., Bellerive, A., Britton, D., Hyatt, E., MacFarlane, D., Patel, P., Spaan, B., Sadoff, A., Ammar, R., Baringer, P., Bean, A., Besson, D., Coppage, D., Copty, N., Davis, R., Hancock, N., Kelly, M., Kotov, S., Kravchenko, I., Kwak, N., Lam, H., Kubota, Y., Lattery, M., Momayezi, M., Nelson, J., Patton, S., Poling, R., Savinov, V., Schrenk, S., Wang, R., Alam, M., Kim, I., Ling, Z., Mahmood, A., O'Neill, J., Severini, H., Sun, C., Wappler, F., Crawford, G., Daubenmier, C., Fulton, R., Fujino, D., Gan, K., Honscheid, K., Kagan, H., Kass, R., Lee, J., Malchow, R., Skovpen, Y., Sung, M., White, C., Zoeller, M., Butler, F., Fu, X., Nemati, B., Ross, W., Skubic, P., Wood, M., Bishai, M., Fast, J., Gerndt, E., McIlwain, R., Miao, T., Miller, D., Modesitt, M., Payne, D., Shibata, E., Shipsey, I., Wang, P., Battle, M., Ernst, J., Gibbons, L., Kwon, Y., Roberts, S., Thorndike, E., Wang, C., Dominick, J., Lambrecht, M., Sanghera, S., Shelkov, V., Skwarnicki, T., Stroynowski, R., Volobouev, I., Wei, G., Zadorozhny, P., Artuso, M., Gao, M., Goldberg, M., He, D., Horwitz, N., Moneti, G., Mountain, R., Muheim, F., Mukhin, Y., Playfer, S., Rozen, Y., Stone, S., Xing, X., Zhu, G., Bartelt, J., Csorna, S., Egyed, Z., Jain, V., Gibaut, D., Kinoshita, K., Pomianowski, P., Barish, B., Chadha, M., Chan, S., Cowen, D., Eigen, G., Miller, J., O'Grady, C., Urheim, J., Weinstein, A., Athanas, M., Brower, W., Masek, G., Paar, H., Gronberg, J., Kutschke, R., Menary, S., Morrison, R., Nakanishi, S., Nelson, H., Nelson, T., Qiao, C., Richman, J., Ryd, A., Tajima, H., Sperka, D., Witherell, M., Balest, R., Cho, K., Ford, W., Johnson, D., Lingel, K., Lohner, M., Rankin, P., and Smith, J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review Letters
ISSN:0031-9007
ISSN (Online):1079-7114

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