Radiativeϒ(1S)decays
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ID: 268713
1990
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Abstract
We report on a study of exclusive radiative decays of the ϒ(1S) resonance. We have considered decays into final states of the form ϒ→γn(h+h−), with (h+h−) denoting a charged-hadron pair (either π+π−, K+K−, or pp¯), and n denoting the number of such pairs in the event. We measure branching ratios for n=2, 3, and 4, and search for structure in the recoiling hadronic system. For the n=1 case, we present upper limits. No evidence is observed for two-body radiative decays of the ϒ(1S) meson in any of the above channels.
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| Authors | R. Fulton,M. Hempstead,T. Jensen,D. R. Johnson,H. Kagan,R. Kass,F. Morrow,J. Whitmore,W. -Y. Chen,J. Dominick,R. L. McIlwain,D. H. Miller,C. R. Ng,E. I. Shibata,W. -M. Yao,K. Sparks,E. H. Thorndike,M. S. Alam,N. Katayama,I. J. Kim,W. C. Li,X. C. Lou,C. R. Sun,D. Bortoletto,M. Goldberg,N. Horwitz,P. Lubrano,M. D. Mestayer,G. C. Moneti,V. Sharma,I. P. J. Shipsey,T. Skwarnicki,S. E. Csorna,T. Letson,I. C. Brock,T. Ferguson,Helmut Vogel,J. Alexander,Marina Artuso,C. Bebek,J. Byrd,K. Berkelman,E. Blucher,D. G. Cassel,E. Cheu,D. M. Coffman,T. Copie,G. Crawford,J. W. DeWire,P. S. Drell,R. Ehrlich,R. S. Galik,B. Gittelman,S. W. Gray,A. M. Halling,D. L. Hartill,B. K. Heltsley,J. Kandaswamy,Robert Kowalewski,D. L. Kreinick,Y. Kubota,J. D. Lewis,N. B. Mistry,James Mueller,R. Namjoshi,S. Nandi,E. Nordberg,C. O'Grady,D. Peterson,M. Pisharody,D. Riley,M. Sapper,A. Silverman,Sheldon Stone,H. Worden,M. Worris,A. J. Sadoff,P. Avery,D. Besson,L. Garren,J. Yelton,Themistocles Bowcock,K. Kinoshita,F. M. Pipkin,M. Procario,Richard Wilson,J. Wolinski,D. Xiao,P. Baringer,P. Haas,Ha Lam,A. Jawahery,C. H. Park,D. Perticone,Ronald Poling;R. Fulton;M. Hempstead;T. Jensen;D. R. Johnson;H. Kagan;R. Kass;F. Morrow;J. Whitmore;W. -Y. Chen;J. Dominick;R. L. McIlwain;D. H. Miller;C. R. Ng;E. I. Shibata;W. -M. Yao;K. Sparks;E. H. Thorndike;M. S. Alam;N. Katayama;I. J. Kim;W. C. Li;X. C. Lou;C. R. Sun;D. Bortoletto;M. Goldberg;N. Horwitz;P. Lubrano;M. D. Mestayer;G. C. Moneti;V. Sharma;I. P. J. Shipsey;T. Skwarnicki;S. E. Csorna;T. Letson;I. C. Brock;T. Ferguson;Helmut Vogel;J. Alexander;Marina Artuso;C. Bebek;J. Byrd;K. Berkelman;E. Blucher;D. G. Cassel;E. Cheu;D. M. Coffman;T. Copie;G. Crawford;J. W. DeWire;P. S. Drell;R. Ehrlich;R. S. Galik;B. Gittelman;S. W. Gray;A. M. Halling;D. L. Hartill;B. K. Heltsley;J. Kandaswamy;Robert Kowalewski;D. L. Kreinick;Y. Kubota;J. D. Lewis;N. B. Mistry;James Mueller;R. Namjoshi;S. Nandi;E. Nordberg;C. O'Grady;D. Peterson;M. Pisharody;D. Riley;M. Sapper;A. Silverman;Sheldon Stone;H. Worden;M. Worris;A. J. Sadoff;P. Avery;D. Besson;L. Garren;J. Yelton;Themistocles Bowcock;K. Kinoshita;F. M. Pipkin;M. Procario;Richard Wilson;J. Wolinski;D. Xiao;P. Baringer;P. Haas;Ha Lam;A. Jawahery;C. H. Park;D. Perticone;Ronald Poling; |
| Journal | physical review d |
| Year | 1990 |
| DOI |
10.1103/physrevd.41.1401
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| URL | |
| Keywords |
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