Observation of D1 (2420)+ and D2∗(2460)+

Bergfeld, T. et al. (1994) Observation of D1 (2420)+ and D2∗(2460)+. Physics Letters B, 340(3), pp. 194-204. (doi: 10.1016/0370-2693(94)01348-9)

Abstract

Using the CLEO II detector at CESR, we have observed two charmed states, where the higher mass state decays to D0π+ and to , while the lower mass state decays to , but not to D0π+. The masses and widths were measured to be 2425±2±2 MeV/c2 and 26−7−4+8+4 MeV/c2 for the lower mass state, and 2463±3±3 MeV/c2 and 27−8−5+11+5 MeV/c2 for the higher mass state. Properties of these states, including their decay angular distributions and spin-parity assignments have been studied. The results of this analysis support the identification of these states as the charged , respectively. The isospin mass splittings between these states and their neutral partners have also been measured. This is the first full reconstruction of any decay mode of the D1 (2420)+ and the first observation of the decay of D~ (2460) + to D*°~ -+.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Britton, Professor David
• Authors: Bergfeld, T., Eisenstein, B.I., Gollin, G., Ong, B., Palmer, M., Selen, M., Thaler, J.J., Edwards, K.W., Ogg, M., Bellerive, A., Britton, D. I., Hyatt, E.R.F., MacFarlane, D.B., Patel, P.M., Spaan, B., Sadoff, A.J., 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.K., Patton, S., Poling, R., Savinov, V., Schrenk, S., Wang, R., Alam, M.S., Kim, I.J., Ling, Z., Mahmood, A.H., O'Neill, J.J., Severini, H., Sun, C.R., Wappler, F., Crawford, G., Daubenmier, C.M., Fulton, R., Fujino, D., Gan, K.K., Honscheid, K., Kagan, H., Kass, R., Lee, J., Malchow, R., Sung, M., White, C., Zoeller, M.M., Butler, F., Fu, X., Nemati, B., Ross, W.R., Skubic, P., Wood, M., Bishai, M., Fast, J., Gerndt, E., Hinson, J.W., McIlwain, R.L., Miao, T., Miller, D.H., Modesitt, M., Payne, D., Shibata, E.I., Shipsey, I.P.J., Wang, P.N., Battle, M., Ernst, J., Gibbons, L., Kwon, Y., Roberts, S., Thorndike, E.H., Wang, C.H., 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.C., Mountain, R., Muheim, F., Mukhin, Y., Playfer, S., Rozen, Y., Stone, S., Xing, X., Zhu, G., Bartelt, J., Csorna, S.E., Egyed, Z., Jain, V., Gibaut, D., Kinoshita, K., Pomianowski, P., Barish, B., Chadha, M., Chan, S., Cowen, D.F., Eigen, G., Miller, J.S., O'Grady, C., Urheim, J., Weinstein, A.J., Athanas, M., Brower, W., Masek, G., Paar, H.P., Gronberg, J., Kutschke, R., Menary, S., Morrison, R.J., Nakanishi, S., Nelson, H.N., Nelson, T.K., Qiao, C., Richman, J.D., Ryd, A., Sperka, D., Tajima, H., Witherell, M.S., Balest, R., Cho, K., Ford, W.T., Johnson, D.R., Lingel, K., Lohner, M., Rankin, P., Smith, J.G., Alexander, J.P., Bebek, C., Berkelman, K., Bloom, K., Browder, T.E., Cassel, D.G., Cho, H.A., Coffman, D.M., Crowcroft, D.S., Drell, P.S., Dumas, D.J., Ehrlich, R., Gaidarev, P., Garcia-Sciveres, M., Geiser, B., Gittelman, B., Gray, S.W., Hartill, D.L., Heltsley, B.K., Henderson, S., Jones, C.D., Jones, S.L., Kandaswamy, J., Katayama, N., Kim, P.C., Kreinick, D.L., Ludwig, G.S., Masui, J., Mevissen, J., Mistry, N.B., Ng, C.R., Nordberg, E., Patterson, J.R., 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., and Yamamoto, H.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physics Letters B
• Publisher: Elsevier BV
• ISSN: 0370-2693
• ISSN (Online): 1873-2445