Measurements of the mass, total width, and two-photon partial width of the eta(c) meson. Academic Article uri icon

abstract

  • Using 13.4 fb(-1) of data collected with the CLEO detector at the Cornell Electron Storage Ring, we have observed 300 events for the two-photon production of ground-state pseudoscalar charmonium in the decay eta(c)-->K(0)(S)K-/+pi(+/-). We have measured the eta(c) mass to be [2980.4+/-2.3 (stat)+/-0.6 (syst)] MeV and its full width as [27.0+/-5.8 (stat)+/-1.4 (syst)] MeV. We have determined the two-photon partial width of the eta(c) meson to be [7.6+/-0.8 (stat)+/-0.4 (syst)+/-2.3 (br)] keV, with the last uncertainty associated with the decay branching fraction.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Brandenburg, G., Ershov, A., Gao, Y. S., Kim, D. Y., Wilson, R., Browder, T. E., ... CLEO Collaboration.

citation count

  • 18

complete list of authors

  • Brandenburg, G||Ershov, A||Gao, YS||Kim, DY||Wilson, R||Browder, TE||Li, Y||Rodriguez, JL||Yamamoto, H||Bergfeld, T||Eisenstein, BI||Ernst, J||Gladding, GE||Gollin, GD||Hans, RM||Johnson, E||Karliner, I||Marsh, MA||Palmer, M||Plager, C||Sedlack, C||Selen, M||Thaler, JJ||Williams, J||Edwards, KW||Janicek, R||Patel, PM||Sadoff, AJ||Ammar, R||Bean, A||Besson, D||Davis, R||Kwak, N||Zhao, X||Anderson, S||Frolov, VV||Kubota, Y||Lee, SJ||Mahapatra, R||O'Neill, JJ||Poling, R||Riehle, T||Smith, A||Stepaniak, CJ||Urheim, J||Ahmed, S||Alam, MS||Athar, SB||Jian, L||Ling, L||Saleem, M||Timm, S||Wappler, F||Anastassov, A||Duboscq, JE||Eckhart, E||Gan, KK||Gwon, C||Hart, T||Honscheid, K||Hufnagel, D||Kagan, H||Kass, R||Pedlar, TK||Schwarthoff, H||Thayer, JB||von Toerne, E||Zoeller, MM||Richichi, SJ||Severini, H||Skubic, P||Undrus, A||Chen, S||Fast, J||Hinson, JW||Lee, J||Miller, DH||Shibata, EI||Shipsey, IP||Pavlunin, V||Cronin-Hennessy, D||Lyon, AL||Thorndike, EH||Jessop, CP||Marsiske, H||Perl, ML||Savinov, V||Ugolini, D||Zhou, X||Coan, TE||Fadeyev, V||Maravin, Y||Narsky, I||Stroynowski, R||Ye, J||Wlodek, T||Artuso, M||Ayad, R||Boulahouache, C||Bukin, K||Dambasuren, E||Karamov, S||Majumder, G||Moneti, GC||Mountain, R||Schuh, S||Skwarnicki, T||Stone, S||Viehhauser, G||Wang, JC||Wolf, A||Wu, J||Kopp, S||Mahmood, AH||Csorna, SE||Danko, I||McLean, KW||Márka, S||Xu, Z||Godang, R||Kinoshita, K||Lai, IC||Schrenk, S||Bonvicini, G||Cinabro, D||McGee, S||Perera, LP||Zhou, GJ||Lipeles, E||Pappas, SP||Schmidtler, M||Shapiro, A||Sun, WM||Weinstein, AJ||Würthwein, F||Jaffe, DE||Masek, G||Paar, HP||Potter, EM||Prell, S||Sharma, V||Asner, DM||Eppich, A||Hill, TS||Morrison, RJ||Briere, RA||Ferguson, T||Vogel, H||Behrens, BH||Ford, WT||Gritsan, A||Roy, J||Smith, JG||Alexander, JP||Baker, R||Bebek, C||Berger, BE||Berkelman, K||Blanc, F||Boisvert, V||Cassel, DG||Dickson, M||Drell, PS||Ecklund, KM||Ehrlich, R||Foland, AD||Gaidarev, P||Galik, RS||Gibbons, L||Gittelman, B||Gray, SW||Hartill, DL||Heltsley, BK||Hopman, PI||Jones, CD||Kreinick, DL||Lohner, M||Magerkurth, A||Meyer, TO||Mistry, NB||Nordberg, E||Patterson, JR||Peterson, D||Riley, D||Thayer, JG||Thies, PG||Urner, D||Valant-Spaight, B||Warburton, A||Avery, P||Prescott, C||Rubiera, AI||Yelton, J||Zheng, J

publication date

  • October 2000