He Q, Muramatsu H, Park C S, Park W, Thorndike E H, Coan T E, Gao Y S, Liu F, Artuso M, Boulahouache C, Blusk S, Butt J, Dambasuren E, Dorjkhaidav O, Li J, Menaa N, Mountain R, Nandakumar R, Randrianarivony K, Redjimi R, Sia R, Skwarnicki T, Stone S, Wang J C, Zhang K, Csorna S E, Bonvicini G, Cinabro D, Dubrovin M, Briere R A, Chen G P, Chen J, Ferguson T, Tatishvili G, Vogel H, Watkins M E, Rosner J L, Adam N E, Alexander J P, Berkelman K, Cassel D G, Crede V, Duboscq J E, Ecklund K M, Ehrlich R, Fields L, Gibbons L, Gittelman B, Gray R, Gray S W, Hartill D L, Heltsley B K, Hertz D, Hsu L, Jones C D, Kandaswamy J, Kreinick D L, Kuznetsov V E, Mahlke-Krüger H, Meyer T O, Onyisi P U E, Patterson J R, Peterson D, Phillips E A, Pivarski J, Riley D, Ryd A, Sadoff A J, Schwarthoff H, Shi X, Shepherd M R, Stroiney S, Sun W M, Urner D, Weaver K M, Wilksen T, Weinberger M, Athar S B, Avery P, Breva-Newell L, Patel R, Potlia V, Stoeck H, Yelton J, Rubin P, Cawlfield C, Eisenstein B I, Gollin G D, Karliner I, Kim D, Lowrey N, Naik P, Sedlack C, Selen M, Williams J, Wiss J, Edwards K W, Besson D, Pedlar T K, Cronin-Hennessy D, Gao K Y, Gong D T, Hietala J, Kubota Y, Klein T, Lang B W, Li S Z, Poling R, Scott A W, Smith A, Dobbs S, Metreveli Z, Seth K K, Tomaradze A, Zweber P, Ernst J, Mahmood A H, Severini H, Asner D M, Dytman S A, Love W, Mehrabyan S, Mueller J A, Savinov V, Li Z, Lopez A, Mendez H, Ramirez J, Huang G S, Miller D H, Pavlunin V, Sanghi B, Shipsey I P J, Adams G S, Chasse M, Cravey M, Cummings J P, Danko I, Napolitano J
University of Rochester, Rochester, New York 14627, USA.
Phys Rev Lett. 2005 Sep 16;95(12):121801. doi: 10.1103/PhysRevLett.95.121801. Epub 2005 Sep 14.
Using 55.8 pb(-1) of e+e- collisions recorded at the psi(3770) resonance with the CLEO-c detector at CESR, we determine absolute hadronic branching fractions of charged and neutral D mesons using a double tag technique. Among measurements for three D0 and six D+ modes, we obtain reference branching fractions B(D0-->K-pi+)=(3.91+/-0.08+/-0.09)% and B(D+-->K-pi+pi+)=(9.5+/-0.2+/-0.3)%, where the uncertainties are statistical and systematic, respectively. Final state radiation is included in these branching fractions by allowing for additional, unobserved, photons in the final state. Using a determination of the integrated luminosity, we also extract the cross sections sigma(e+e- -->D0D0)=(3.60+/-0.07(+0.07)(-0.05)) nb and sigma(e+e- -->D+D-)=(2.79+/-0.07(+0.10)(-0.04)) nb.
利用在CESR的CLEO - c探测器上，于ψ(3770)共振处记录的55.8 pb⁻¹的正负电子对撞数据，我们采用双标记技术确定了带电和中性D介子的绝对强子分支比。在对三个D⁰和六个D⁺模式的测量中，我们得到参考分支比B(D⁰→K⁻π⁺) = (3.91±0.08±0.09)%和B(D⁺→K⁻π⁺π⁺) = (9.5±0.2±0.3)%，其中不确定性分别为统计不确定性和系统不确定性。通过考虑末态中额外的、未观测到的光子，末态辐射包含在这些分支比中。利用对积分亮度的测定，我们还提取出截面σ(e⁺e⁻→D⁰D⁰) = (3.60±0.07(⁺0.07)(⁻0.05)) nb和σ(e⁺e⁻→D⁺D⁻) = (2.79±0.07(⁺0.10)(⁻0.04)) nb。
