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27 April 2024

» pubmed » pmid11019275

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Measurements of the mass, total width, and two-photon partial width of the eta(c) meson
G Brandenburg ; A Ershov ; Y S Gao ; D Y Kim ; R Wilson ; T E Browder ; Y Li ; J L Rodriguez ; H Yamamoto ; T Bergfeld ; B I Eisenstein ; J Ernst ; G E Gladding ; G D Gollin ; R M Hans ; E Johnson ; I Karliner ; M A Marsh ; M Palmer ; C Plager ; C Sedlack ; M Selen ; J J Thaler ; J Williams ; K W Edwards ; R Janicek ; P M Patel ; A J Sadoff ; R Ammar ; A Bean ; D Besson ; R Davis ; N Kwak ; X Zhao ; S Anderson ; V V Frolov ; Y Kubota ; S J Lee ; R Mahapatra ; J J O’Neill ; R Poling ; T Riehle ; A Smith ; C J Stepaniak ; J Urheim ; S Ahmed ; M S Alam ; S B Athar ; L Jian ; L Ling ; M Saleem ; S Timm ; F Wappler ; A Anastassov ; J E Duboscq ; E Eckhart ; K K Gan ; C Gwon ; T Hart ; K Honscheid ; D Hufnagel ; H Kagan ; R Kass ; T K Pedlar ; H Schwarthoff ; J B Thayer ; E von Toerne ; M M Zoeller ; S J Richichi ; H Severini ; P Skubic ; A Undrus ; S Chen ; J Fast ; J W Hinson ; J Lee ; D H Miller ; E I Shibata ; I P Shipsey ; V Pavlunin ; D Cronin-Hennessy ; A L Lyon ; E H Thorndike ; C P Jessop ; H Marsiske ; M L Perl ; V Savinov ; D Ugolini ; X Zhou ; T E Coan ; V Fadeyev ; Y Maravin ; I Narsky ; R Stroynowski ; J Ye ; T Wlodek ; M Artuso ; R Ayad ; C Boulahouache ; K Bukin ; E Dambasuren ; S Karamov ; G Majumder ; G C Moneti ; R Mountain ; S Schuh ; T Skwarnicki ; S Stone ; G Viehhauser ; J C Wang ; A Wolf ; J Wu ; S Kopp ; A H Mahmood ; S E Csorna ; I Danko ; K W McLean ; S Márka ; Z Xu ; R Godang ; K Kinoshita ; I C Lai ; S Schrenk ; G Bonvicini ; D Cinabro ; S McGee ; L P Perera ; G J Zhou ; E Lipeles ; S P Pappas ; M Schmidtler ; A Shapiro ; W M Sun ; A J Weinstein ; F Würthwein ; D E Jaffe ; G Masek ; H P Paar ; E M Potter ; S Prell ; V Sharma ; D M Asner ; A Eppich ; T S Hill ; R J Morrison ; R A Briere ; T Ferguson ; H Vogel ; B H Behrens ; W T Ford ; A Gritsan ; J Roy ; J G Smith ; J P Alexander ; R Baker ; C Bebek ; B E Berger ; K Berkelman ; F Blanc ; V Boisvert ; D G Cassel ; M Dickson ; P S Drell ; K M Ecklund ; R Ehrlich ; A D Fol ; P Gaidarev ; R S Galik ; L Gibbons ; B Gittelman ; S W Gray ; D L Hartill ; B K Heltsley ; P I Hopman ; C D Jones ; D L Kreinick ; M Lohner ; A Magerkurth ; T O Meyer ; N B Mistry ; E Nordberg ; J R Patterson ; D Peterson ; D Riley ; J G Thayer ; P G Thies ; D Urner ; B Valant-Spaight ; A Warburton ; P Avery ; C Prescott ; A I Rubiera ; J Yelton ; J Zheng ; ;
Date:	9 Oct 2000
Journal:	Phys Rev Lett, 85 (15), 3095-9
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.
Source:	PubMed, pmid11019275
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