Determining the β function of the strong interaction coupling and closing the light gluino window

F. Csikor; Z. Fodor

doi:10.1103/PhysRevLett.78.4335

Determining the β function of the strong interaction coupling and closing the light gluino window

F. Csikor
, Z. Fodor

Research output: Contribution to journal › Article › peer-review

37 Scopus citations

Abstract

We discuss the perturbative running of α_s in a model independent way. Our analysis contains data on the hadronic τ decay and hadronic cross sections in e⁺ e- annihilation between 5 GeV and M_z We determine the color coefficients and the perturbative β function of the strong interaction. The results are in agreement with QCD and rule out the QCD + light gluino scenarios on the 70.8%-93.0% C.L. We combine our method with that of the multijet analysis at LEP. The combined result rules out light gluinos on the 99.76% C.L., provided that nonperturbative effects are not large.

Original language	English (US)
Pages (from-to)	4335-4338
Number of pages	4
Journal	Physical review letters
Volume	78
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.78.4335
State	Published - Jun 9 1997

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.78.4335

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abstract = "We discuss the perturbative running of αs in a model independent way. Our analysis contains data on the hadronic τ decay and hadronic cross sections in e+ e- annihilation between 5 GeV and Mz We determine the color coefficients and the perturbative β function of the strong interaction. The results are in agreement with QCD and rule out the QCD + light gluino scenarios on the 70.8\%-93.0\% C.L. We combine our method with that of the multijet analysis at LEP. The combined result rules out light gluinos on the 99.76\% C.L., provided that nonperturbative effects are not large.",

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N2 - We discuss the perturbative running of αs in a model independent way. Our analysis contains data on the hadronic τ decay and hadronic cross sections in e+ e- annihilation between 5 GeV and Mz We determine the color coefficients and the perturbative β function of the strong interaction. The results are in agreement with QCD and rule out the QCD + light gluino scenarios on the 70.8%-93.0% C.L. We combine our method with that of the multijet analysis at LEP. The combined result rules out light gluinos on the 99.76% C.L., provided that nonperturbative effects are not large.

AB - We discuss the perturbative running of αs in a model independent way. Our analysis contains data on the hadronic τ decay and hadronic cross sections in e+ e- annihilation between 5 GeV and Mz We determine the color coefficients and the perturbative β function of the strong interaction. The results are in agreement with QCD and rule out the QCD + light gluino scenarios on the 70.8%-93.0% C.L. We combine our method with that of the multijet analysis at LEP. The combined result rules out light gluinos on the 99.76% C.L., provided that nonperturbative effects are not large.

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Determining the β function of the strong interaction coupling and closing the light gluino window

Abstract

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