A study of the reaction e+e-- → μ+μ-γISR at LEP and search for new physics at annihilation energies near 80 ... View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

1997-12

AUTHORS

DELPHI Collaboration

ABSTRACT

A study of the channel e+e- → μ+μγISR, where γISR is an initial state radiation photon, is presented using data collected by the DELPHI experiment from 1991 to 1994. The total cross-section at effective annihilation energies (√s') below the Z0 peak is obtained by using the events with relatively hard initial state radiative photon(s) (Eγ > 1 GeV). The differential cross-section as a function of the muon polar production angle is also determined in order to extract the forward-backward asymmetries for the reaction e+e- → μ+μ- at energies √s' between 20 and 87 GeV. The ratio of the helicity cross-sections , where the two subscripts stand for the helicities of the incoming e- and outgoing μ- respectively, is extracted from the differential cross-sections in order to test the Standard Model and to look for new physics near 80 GeV. No deviations from the Standard Model were found. More... »

PAGES

581-592

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s002880050504

DOI

http://dx.doi.org/10.1007/s002880050504

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1036742525


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