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. 2005 Jun 17;94(23):232002.
doi: 10.1103/PhysRevLett.94.232002. Epub 2005 Jun 17.

Branching fractions for psi(2S)-to-J/psi transitions

N E Adam  1 , J P Alexander, K Berkelman, D G Cassel, V Crede, J E Duboscq, K M Ecklund, R Ehrlich, L Fields, R S Galik, L Gibbons, B Gittelman, R Gray, S W Gray, D L Hartill, B K Heltsley, D Hertz, L Hsu, C D Jones, J Kandaswamy, D L Kreinick, V E Kuznetsov, H Mahlke-Krüger, T O Meyer, P U E Onyisi, J R Patterson, D Peterson, E A Phillips, J Pivarski, D Riley, A Ryd, A J Sadoff, H Schwarthoff, M R Shepherd, S Stroiney, W M Sun, D Urner, T Wilksen, M Weinberger, S B Athar, P Avery, L Breva-Newell, R Patel, V Potlia, H Stoeck, J Yelton, P Rubin, C Cawlfield, B I Eisenstein, G D Gollin, I Karliner, D Kim, N Lowrey, P Naik, C Sedlack, M Selen, J Williams, J Wiss, K W Edwards, D Besson, T K Pedlar, D Cronin-Hennessy, K Y Gao, D T Gong, Y Kubota, T Klein, B W Lang, S Z Li, R Poling, A W Scott, A Smith, S Dobbs, Z Metreveli, K K Seth, A Tomaradze, P Zweber, J Ernst, A H Mahmood, H Severini, D M Asner, S A Dytman, W Love, S Mehrabyan, J A Mueller, V Savinov, Z Li, A Lopez, H Mendez, J Ramirez, G S Huang, D H Miller, V Pavlunin, B Sanghi, E I Shibata, I P J Shipsey, G S Adams, M Chasse, M Cravey, J P Cummings, I Danko, J Napolitano, Q He, H Muramatsu, C S Park, W Park, E H Thorndike, T E Coan, Y S Gao, F Liu, M Artuso, C Boulahouache, S Blusk, J Butt, E Dambasuren, O Dorjkhaidav, J Li, N Menaa, R Mountain, R Nandakumar, R Redjimi, R Sia, T Skwarnicki, S Stone, J C Wang, K Zhang, S E Csorna, G Bonvicini, D Cinabro, M Dubrovin, R A Briere, G P Chen, J Chen, T Ferguson, G Tatishvili, H Vogel, M E Watkins, J L Rosner; CLEO Collaboration
Affiliations

Branching fractions for psi(2S)-to-J/psi transitions

N E Adam et al. Phys Rev Lett. .

Abstract

We describe new measurements of the inclusive and exclusive branching fractions for psi(2S) transitions to J/psi using e(+)e(-) collision data collected with the CLEO detector operating at CESR. All branching fractions and ratios of branching fractions reported here represent either the most precise measurements to date or the first direct measurements. Indirectly and in combination with other CLEO measurements, we determine B(chi(cJ) --> gamma(J/psi)) and B[psi(2S) --> light hadrons].

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