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25 April 2024

» pubmed » pmid15698068

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Measurement of the muonic branching fractions of the narrow upsilon resonances
G S Adams ; M Chasse ; M Cravey ; J P Cummings ; I Danko ; J Napolitano ; D Cronin-Hennessy ; C S Park ; W Park ; J B Thayer ; E H Thorndike ; T E Coan ; Y S Gao ; F Liu ; R Stroynowski ; M Artuso ; C Boulahouache ; S Blusk ; J Butt ; E Dambasuren ; O Dorjkhaidav ; N Menaa ; R Mountain ; H Muramatsu ; R Nandakumar ; R Redjimi ; R Sia ; T Skwarnicki ; S Stone ; J C Wang ; K Zhang ; S E Csorna ; G Bonvicini ; D Cinabro ; M Dubrovin ; A Bornheim ; S P Pappas ; A J Weinstein ; R A Briere ; G P Chen ; T Ferguson ; G Tatishvili ; H Vogel ; M E Watkins ; N E Adam ; J P Alexander ; K Berkelman ; D G Cassel ; 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 ; J Pivarski ; D Riley ; J L Rosner ; A Ryd ; A J Sadoff ; H Schwarthoff ; M R Shepherd ; W M Sun ; J G Thayer ; 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 J Thaler ; J Williams ; J Wiss ; K W Edwards ; D Besson ; K Y Gao ; D T Gong ; Y Kubota ; B W Lang ; S Z Li ; R Poling ; A W Scott ; A Smith ; C J Stepaniak ; J Urheim ; Z Metreveli ; K K Seth ; A Tomaradze ; P Zweber ; J Ernst ; A H Mahmood ; K Arms ; K K Gan ; D M Asner ; S A Dytman ; 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 ; ;
Date:	14 Jan 2005
Journal:	Phys Rev Lett, 94 (1), 012001
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.
Source:	PubMed, pmid15698068
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