对ψ(2S)的13种新的独特多体强子衰变的观测。

Observation of thirteen new exclusive multibody hadronic decays of the psi(2S).

作者信息

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, 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, Wilksen T, Weaver K M, 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, White E J, 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, Cravey M, Cummings J P, Danko I, Napolitano J, 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, 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

机构信息

Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA.

出版信息

Phys Rev Lett. 2005 Aug 5;95(6):062001. doi: 10.1103/PhysRevLett.95.062001.

DOI:10.1103/PhysRevLett.95.062001

PMID:16090940

Abstract

Using data accumulated with the CLEO detector corresponding to an integrated luminosity of [symbol: see text] = 5.63 pb(-1) on the peak of the psi(2S) [3.08 x 10(6) psi(2S) decays] and 20.70 pb(-1) at square root of[s] = 3.67 GeV, we report first measurements of the branching fractions for the following 13 decay modes of the psi(2S): eta3pi, &eta'3pi, rhoK+K-, K+K-pi+pi-pi0, 2(K+K-), 2(K+K-)pi0, rhopp, pppi+pi-pi0, etapp, ppK+K-, lambdalambdapi+pi-, lambdapK+, and lambdapK+pi+pi-, and more precise measurements of 8 previously measured modes: 2(pi+pi-), rhopi+pi-, 2(pi+pi-)pi0, omegapi+pi-, K+K-pi+pi-, omegaK+K-, phiK+K-, and pppi+pi-. We also report new branching fraction measurements of phipi+pi- and omegapp and upper limits for etapi+pi-, etaK+K-, and phivpp. Results are compared, where possible, with the corresponding J/psi branching ratios to provide new tests of the 12% rule.

摘要

利用CLEO探测器积累的数据，这些数据对应于在ψ(2S)峰值处积分亮度为[符号：见原文]=5.63 pb⁻¹（3.08×10⁶次ψ(2S)衰变）以及在质心能量平方根√s = 3.67 GeV时的20.70 pb⁻¹，我们首次报告了ψ(2S)的以下13种衰变模式的分支比测量结果：η3π、η'3π、ρK⁺K⁻、K⁺K⁻π⁺π⁻π⁰、2(K⁺K⁻)、2(K⁺K⁻)π⁰、ρpp、ppπ⁺π⁻π⁰、ηpp、ppK⁺K⁻、ΛΛπ⁺π⁻、ΛpK⁺以及ΛpK⁺π⁺π⁻，并且对8种先前已测量的模式进行了更精确的测量：2(π⁺π⁻)、ρπ⁺π⁻、2(π⁺π⁻)π⁰、ωπ⁺π⁻、K⁺K⁻π⁺π⁻、ωK⁺K⁻、φK⁺K⁻以及ppπ⁺π⁻。我们还报告了φπ⁺π⁻和ωpp的新分支比测量结果以及ηπ⁺π⁻、ηK⁺K⁻和φνpp的上限。在可能的情况下，将结果与相应的J/ψ分支比进行比较，以对12%规则进行新的检验。