Search for Charged Lepton Flavor Violation in Narrow Y Decays

Lees, J. P. and Cheng, C. H. and Doll, D. A. and Echenard, B. and Hitlin, D. G. and Ongmongkolkul, P. and Porter, F. C. and Rakitin, A. Y. (2010) Search for Charged Lepton Flavor Violation in Narrow Y Decays. Physical Review Letters, 104 (15). Art. No. 151802. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20100608-091646489

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Abstract

Charged-lepton flavor-violating processes are unobservable in the standard model, but they are predicted to be enhanced in several extensions to the standard model, including supersymmetry and models with leptoquarks or compositeness. We present a search for such processes in a sample of 99×10^6Υ(2S) decays and 117×10^6Υ(3S) decays collected with the BABAR detector. We place upper limits on the branching fractions B(Υ(nS)→e^±τ^∓) and B(Υ(nS)→μ^±τ^∓) (n=2,3) at the 10^(-6) level and use these results to place lower limits of order 1 TeV on the mass scale of charged-lepton flavor-violating effective operators

Item Type:

Article

Related URLs:

URL	URL Type	Description
http://dx.doi.org/10.1103/PhysRevLett.104.151802	DOI	UNSPECIFIED
http://link.aps.org/doi/10.1103/PhysRevLett.104.151802	Publisher	UNSPECIFIED

Additional Information:

© 2010 The American Physical Society. Received 20 January 2010; published 16 April 2010. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (U.S.A.), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), and STFC (United Kingdom). Individuals have received support from the Marie Curie EIF (European Union) and the A. P. Sloan Foundation.

Funders:

Funding Agency	Grant Number
Department of Energy	UNSPECIFIED
NSF	UNSPECIFIED
Natural Sciences and Engineering Research Council (Canada)	UNSPECIFIED
Commissariat à l'Énergie Atomique (French Atomic Energy Commission)	UNSPECIFIED
Centre National de la Recherche Scientifique (National Center for Scientific Research, France)	UNSPECIFIED
Institut National de Physique Nucléaire et Physique des Particules (France)	UNSPECIFIED
Bundesministerium für Bildung und Forschung (German: Federal Ministry of Education and Research; Bonn, Germany)	UNSPECIFIED
Deutsche Forschungsgemeinschaft (German Research Council)	UNSPECIFIED
Istituto Nazionale di Fisica Nucleare, Italy	UNSPECIFIED
Foundation for Fundamental Research on Matter (The Netherlands)	UNSPECIFIED
Research Council of Norway	UNSPECIFIED
Ministry of Education and Science of the Russian Federation	UNSPECIFIED
Ministerio de Educación y Ciencia (Spain: Ministry for Education and Science)	UNSPECIFIED
Science and Technology Facilities Council (UK)	UNSPECIFIED
Marie Curie EIF (European Union)	UNSPECIFIED
A. P. Sloan Foundation	UNSPECIFIED

Classification Code:

PACS: 13.20.Gd, 11.30.Hv, 14.40.Nd

Record Number:

CaltechAUTHORS:20100608-091646489

Persistent URL:

http://resolver.caltech.edu/CaltechAUTHORS:20100608-091646489

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No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

18602

Collection:

CaltechAUTHORS

Deposited By:

Ruth Sustaita

Deposited On:

08 Jun 2010 17:03

Last Modified:

20 Sep 2016 22:30

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