Observation of the Hadronic transitions chi(b1,2)(2P)-->omegaUpsilon(1S).

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,E Dambasuren,O Dorjkhaidav, R Mountain,H Muramatsu,R Nandakumar,T Skwarnicki, S Stone,J C Wang,A H Mahmood,S E Csorna,G Bonvicini,D Cinabro,M Dubrovin,A Bornheim, E Lipeles,S P Pappas,A Shapiro, W M Sun,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, V Boisvert,D G Cassel,J E Duboscq,K M Ecklund,R Ehrlich, R S Galik, L Gibbons,B Gittelman,S W Gray,D L Hartill, B K Heltsley,L Hsu,C D Jones,J Kandaswamy,D L Kreinick,V E Kuznetsov,A Magerkurth,H Mahlke-Krüger,T O Meyer,N B Mistry,J R Patterson,T K Pedlar,D Peterson,J Pivarski,S J Richichi,D Riley,A J Sadoff,H Schwarthoff,M R Shepherd,J G Thayer,D Urner,T Wilksen,A Warburton, M Weinberger,S B Athar,P Avery,L Breva-Newell,V Potlia,H Stoeck,J Yelton,B I Eisenstein,G D Gollin,I Karliner,N Lowrey,C Plager,C Sedlack,M Selen,J J Thaler,J Williams,K W Edwards,D Besson,K Y Gao,D T Gong,Y Kubota, 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, K Arms,E Eckhart,K K Gan,C Gwon, H Severini,P Skubic,S A Dytman,J A Mueller,S Nam, V Savinov,G S Huang,D H Miller, V Pavlunin,B Sanghi,E I Shibata, I P J Shipsey,I Danko,

Physical review letters（2004）

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摘要

The CLEO Collaboration has made the first observations of hadronic transitions among bottomonium (bbmacr;) states other than the dipion transitions among Upsilon(nS) states. In our study of Upsilon(3S) decays, we find a significant signal for Upsilon(3S)-->gammaomegaUpsilon(1S) that is consistent with radiative decays Upsilon(3S)-->gammachi(b1,2)(2P), followed by chi(b1,2)(2P)-->omegaUpsilon(1S). The branching ratios we obtain are B[chi(b1)(2P)-->omegaUpsilon(1S)]=(1.63(+0.35+0.16)(-0.31-0.15))% and B[chi(b2)(2P)-->omegaUpsilon(1S)]=(1.10(+0.32+0.11)(-0.28-0.10))%, in which the first error is statistical and the second is systematic.

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