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Measurement of the muon pair asymmetry ine+e− annihilation at <img src="/fulltext-image.asp?format=htmlnonpaginated&src=W157678U3G71858L_html\10052_2005_Article_BF01648775_TeX2GIFIE1.gif" border="0" alt=" $$\sqrt s
- Source :
- Zeitschrift für Physik C Particles and Fields; March 1983, Vol. 21 Issue: 1-2 p53-57, 5p
- Publication Year :
- 1983
-
Abstract
- The reactione<superscript>+</superscript>e<superscript>−</superscript>→μ<superscript>+</superscript>μ<superscript>−</superscript> has been studied with the PLUTO detector at the c.m. energy of 34.7 GeV, based on an integrated luminosity of 46 pb<superscript>−1</superscript>. The total cross section agrees with QED predictions, and the corresponding lower limits for theΛ<subscript>+</subscript> andΛ<subscript>−</subscript> QED cutoff parameters are 267 and 126 GeV respectively (95% c.l.). A forward-backward asymmetry parameterA=−(13.4±3.1±<1)% is observed, which is in agreement with the standard model, as well as with other PETRA results obtained at the same energy.
Details
- Language :
- English
- ISSN :
- 01709739 and 14315858
- Volume :
- 21
- Issue :
- 1-2
- Database :
- Supplemental Index
- Journal :
- Zeitschrift für Physik C Particles and Fields
- Publication Type :
- Periodical
- Accession number :
- ejs15740858
- Full Text :
- https://doi.org/10.1007/BF01648775