Measurement of the muonic branching fractions of the narrow upsilon resonances. Academic Article uri icon

abstract

  • The decay branching fractions of the three narrow Upsilon resonances to mu(+)mu(-) have been measured by analyzing about 4.3 fb(-1) e(+)e(-) data collected with the CLEO III detector. The branching fraction B(Upsilon(1S)-->mu(+)mu(-))=(2.49+/-0.02+/-0.07)% is consistent with the current world average, but B(Upsilon(2S)-->mu(+)mu(-))=(2.03+/-0.03+/-0.08)% and B(Upsilon(3S)-->mu(+)mu(-))=(2.39+/-0.07+/-0.10)% are significantly larger than prior results. These new muonic branching fractions imply a narrower total decay width for the Upsilon(2S) and Upsilon(3S) resonances and lower other branching fractions that rely on these decays in their determination.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Adams, G. S., Chasse, M., Cravey, M., Cummings, J. P., Danko, I., Napolitano, J., ... CLEO.

citation count

  • 21

complete list of authors

  • Adams, GS||Chasse, M||Cravey, M||Cummings, JP||Danko, I||Napolitano, J||Cronin-Hennessy, D||Park, CS||Park, W||Thayer, JB||Thorndike, EH||Coan, TE||Gao, YS||Liu, F||Stroynowski, R||Artuso, M||Boulahouache, C||Blusk, S||Butt, J||Dambasuren, E||Dorjkhaidav, O||Menaa, N||Mountain, R||Muramatsu, H||Nandakumar, R||Redjimi, R||Sia, R||Skwarnicki, T||Stone, S||Wang, JC||Zhang, K||Csorna, SE||Bonvicini, G||Cinabro, D||Dubrovin, M||Bornheim, A||Pappas, SP||Weinstein, AJ||Briere, RA||Chen, GP||Ferguson, T||Tatishvili, G||Vogel, H||Watkins, ME||Adam, NE||Alexander, JP||Berkelman, K||Cassel, DG||Duboscq, JE||Ecklund, KM||Ehrlich, R||Fields, L||Galik, RS||Gibbons, L||Gittelman, B||Gray, R||Gray, SW||Hartill, DL||Heltsley, BK||Hertz, D||Hsu, L||Jones, CD||Kandaswamy, J||Kreinick, DL||Kuznetsov, VE||Mahlke-Kr├╝ger, H||Meyer, TO||Onyisi, PUE||Patterson, JR||Peterson, D||Pivarski, J||Riley, D||Rosner, JL||Ryd, A||Sadoff, AJ||Schwarthoff, H||Shepherd, MR||Sun, WM||Thayer, JG||Urner, D||Wilksen, T||Weinberger, M||Athar, SB||Avery, P||Breva-Newell, L||Patel, R||Potlia, V||Stoeck, H||Yelton, J||Rubin, P||Cawlfield, C||Eisenstein, BI||Gollin, GD||Karliner, I||Kim, D||Lowrey, N||Naik, P||Sedlack, C||Selen, M||Thaler, JJ||Williams, J||Wiss, J||Edwards, KW||Besson, D||Gao, KY||Gong, DT||Kubota, Y||Lang, BW||Li, SZ||Poling, R||Scott, AW||Smith, A||Stepaniak, CJ||Urheim, J||Metreveli, Z||Seth, KK||Tomaradze, A||Zweber, P||Ernst, J||Mahmood, AH||Arms, K||Gan, KK||Asner, DM||Dytman, SA||Mehrabyan, S||Mueller, JA||Savinov, V||Li, Z||Lopez, A||Mendez, H||Ramirez, J||Huang, GS||Miller, DH||Pavlunin, V||Sanghi, B||Shibata, EI||Shipsey, IPJ

publication date

  • January 2005