Observation of (3S)⁺^- and Tests of Lepton Universality in Decays

Abstract

References (17)

Citing Articles

Download: PDF (320 kB) or Buy this Article (US$25) (Use Article Pack)

D. Besson,¹ T. K. Pedlar,² D. Cronin-Hennessy,³ K. Y. Gao,³ D. T. Gong,³ J. Hietala,³ Y. Kubota,³ T. Klein,³ B. W. Lang,³ R. Poling,³ A. W. Scott,³ A. Smith,³ P. Zweber,³ S. Dobbs,⁴ Z. Metreveli,⁴ K. K. Seth,⁴ A. Tomaradze,⁴ J. Ernst,⁵ H. Severini,⁶ S. A. Dytman,⁷ W. Love,⁷ V. Savinov,⁷ O. Aquines,⁸ Z. Li,⁸ A. Lopez,⁸ S. Mehrabyan,⁸ H. Mendez,⁸ J. Ramirez,⁸ G. S. Huang,⁹ D. H. Miller,⁹ V. Pavlunin,⁹ B. Sanghi,⁹ I. P. J. Shipsey,⁹ B. Xin,⁹ G. S. Adams,¹⁰ M. Anderson,¹⁰ J. P. Cummings,¹⁰ I. Danko,¹⁰ J. Napolitano,¹⁰ Q. He,¹¹ J. Insler,¹¹ H. Muramatsu,¹¹ C. S. Park,¹¹ E. H. Thorndike,¹¹ F. Yang,¹¹ T. E. Coan,¹² Y. S. Gao,¹² F. Liu,¹² M. Artuso,¹³ S. Blusk,¹³ J. Butt,¹³ N. Horwitz,¹³ J. Li,¹³ N. Menaa,¹³ R. Mountain,¹³ S. Nisar,¹³ K. Randrianarivony,¹³ R. Redjimi,¹³ R. Sia,¹³ T. Skwarnicki,¹³ S. Stone,¹³ J. C. Wang,¹³ K. Zhang,¹³ S. E. Csorna,¹⁴ G. Bonvicini,¹⁵ D. Cinabro,¹⁵ M. Dubrovin,¹⁵ A. Lincoln,¹⁵ D. M. Asner,¹⁶ K. W. Edwards,¹⁶ R. A. Briere,¹⁷ I. Brock,¹⁷ J. Chen,¹⁷ T. Ferguson,¹⁷ G. Tatishvili,¹⁷ H. Vogel,¹⁷ M. E. Watkins,¹⁷ J. L. Rosner,¹⁸ N. E. Adam,¹⁹ J. P. Alexander,¹⁹ K. Berkelman,¹⁹ D. G. Cassel,¹⁹ J. E. Duboscq,¹⁹ K. M. Ecklund,¹⁹ R. Ehrlich,¹⁹ L. Fields,¹⁹ R. S. Galik,¹⁹ L. Gibbons,¹⁹ R. Gray,¹⁹ S. W. Gray,¹⁹ D. L. Hartill,¹⁹ B. K. Heltsley,¹⁹ D. Hertz,¹⁹ C. D. Jones,¹⁹ J. Kandaswamy,¹⁹ D. L. Kreinick,¹⁹ V. E. Kuznetsov,¹⁹ H. Mahlke-Krüger,¹⁹ T. O. Meyer,¹⁹ P. U. E. Onyisi,¹⁹ J. R. Patterson,¹⁹ D. Peterson,¹⁹ J. Pivarski,¹⁹ D. Riley,¹⁹ A. Ryd,¹⁹ A. J. Sadoff,¹⁹ H. Schwarthoff,¹⁹ X. Shi,¹⁹ S. Stroiney,¹⁹ W. M. Sun,¹⁹ T. Wilksen,¹⁹ M. Weinberger,¹⁹ S. B. Athar,²⁰ R. Patel,²⁰ V. Potlia,²⁰ J. Yelton,²⁰ P. Rubin,²¹ C. Cawlfield,²² B. I. Eisenstein,²² I. Karliner,²² D. Kim,²² N. Lowrey,²² P. Naik,²² C. Sedlack,²² M. Selen,²² E. J. White,²² J. Wiss,²² and M. R. Shepherd²³

(CLEO Collaboration)

¹University of Kansas, Lawrence, Kansas 66045, USA
²Luther College, Decorah, Iowa 52101, USA
³University of Minnesota, Minneapolis, Minnesota 55455, USA
⁴Northwestern University, Evanston, Illinois 60208, USA
⁵State University of New York at Albany, Albany, New York 12222, USA
⁶University of Oklahoma, Norman, Oklahoma 73019, USA
⁷University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
⁸University of Puerto Rico, Mayaguez, Puerto Rico 00681
⁹Purdue University, West Lafayette, Indiana 47907, USA
¹⁰Rensselaer Polytechnic Institute, Troy, New York 12180, USA
¹¹University of Rochester, Rochester, New York 14627, USA
¹²Southern Methodist University, Dallas, Texas 75275, USA
¹³Syracuse University, Syracuse, New York 13244, USA
¹⁴Vanderbilt University, Nashville, Tennessee 37235, USA
¹⁵Wayne State University, Detroit, Michigan 48202, USA
¹⁶Carleton University, Ottawa, Ontario, Canada K1S 5B6
¹⁷Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
¹⁸Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
¹⁹Cornell University, Ithaca, New York 14853
²⁰University of Florida, Gainesville, Florida 32611, USA
²¹George Mason University, Fairfax, Virginia 22030, USA
²²University of Illinois, Urbana-Champaign, Illinois 61801, USA
²³Indiana University, Bloomington, Indiana 47405, USA

Received 12 July 2006; published 29 January 2007

Usingdata collected with the CLEO III detector at the CESRe⁺e^- collider, we report on a first observation of thedecay Upsilon (3S) --> tau ⁺ tau ^-, and precisely measure the ratio of branching fractionsof Upsilon (nS), n=1, 2, 3, to tau ⁺ tau ^- and µ⁺µ^- finalstates, finding agreement with expectations from lepton universality. We deriveabsolute branching fractions for these decays, and also set alimit on the influence of a low mass CP-odd Higgsboson in the decay of the Upsilon (1S).

URL:	http://link.aps.org/doi/10.1103/PhysRevLett.98.052002
DOI:	10.1103/PhysRevLett.98.052002
PACS:	13.25.Gv; 14.40.Gx; 14.80.Cp 13.25.Gv Hadronic decays of J/, , and other quarkonia 14.40.Gx Mesons with S=C=B=0, mass > 2.5 GeV (including quarkonia) 14.80.Cp Non-standard-model Higgs bosons YEAR: 2007