Aubert, B. and Albert, J. and Chen, E. and Dvoretskii, A. and Hitlin, D. G. and Narsky, I. and Piatenko, T. and Porter, F. C. and Ryd, A. and Samuel, A. (2006) Observation of Υ(4S) Decays to π^+π^-Υ(1S) and π^+π^-Υ(2S). Physical Review Letters, 96 (23). Art. No. 232001. ISSN 0031-9007. doi:10.1103/PhysRevLett.96.232001. https://resolver.caltech.edu/CaltechAUTHORS:20110216-075407426
![[img]](https://authors.library.caltech.edu/style/images/fileicons/application_pdf.png)
|
PDF
- Published Version
See Usage Policy. 554kB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20110216-075407426
Abstract
We present the first measurement of Υ(4S) decays to π^+π^-Υ(1S) and π^+π^-Υ(2S) based on a sample of 230×10^6Υ(4S) mesons collected with the BABAR detector. We measure the product branching fractions B(Υ(4S)→π^+π^-Υ(1S))×B(Υ(1S)→μ^+μ^-)=(2.23±0.25_(stat)±0.27_(syst))×10^(-6) and B(Υ(4S)→π^+π^-Υ(2S))×B(Υ(2S)→μ^+μ^-)=(1.69±0.26_(stat)±0.20_(syst))×10^(-6), from which we derive the partial widths Γ(Υ(4S)→π^+π^-Υ(1S))=(1.8±0.4) keV and Γ(Υ(4S)→π^+π^-Υ(2S))=(2.7±0.8) keV.
| Item Type: | Article | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Related URLs: |
| ||||||||||||||||||||||||||||||||||||||
| ORCID: |
| ||||||||||||||||||||||||||||||||||||||
| Additional Information: | © 2006 The American Physical Society. Received 14 April 2006; published 13 June 2006. 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 (USA), NSERC (Canada), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from CONACyT (Mexico), Marie Curie EIF (European Union), the A. P. Sloan Foundation, the Research Corporation, and the Alexander von Humboldt Foundation | ||||||||||||||||||||||||||||||||||||||
| Funders: |
| ||||||||||||||||||||||||||||||||||||||
| Issue or Number: | 23 | ||||||||||||||||||||||||||||||||||||||
| Classification Code: | PACS: 13.25.Gv, 14.40.Gx | ||||||||||||||||||||||||||||||||||||||
| DOI: | 10.1103/PhysRevLett.96.232001 | ||||||||||||||||||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20110216-075407426 | ||||||||||||||||||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20110216-075407426 | ||||||||||||||||||||||||||||||||||||||
| Official Citation: | Observation of Υ(4S) Decays to π+π-Υ(1S) and π+π-Υ(2S) B. Aubert et al. (BABAR Collaboration) Published 13 June 2006 (7 pages) 232001 | ||||||||||||||||||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||||||||||||||||||
| ID Code: | 22230 | ||||||||||||||||||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||||||||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||||||||||||||||||||||||||||
| Deposited On: | 16 Feb 2011 16:38 | ||||||||||||||||||||||||||||||||||||||
| Last Modified: | 09 Nov 2021 16:03 |
Repository Staff Only: item control page
