Motivation Energy dependence of running coupling QCD Analysis of non-singlet Structure Function Fit...

DETERMINATION OF THE STRONG COUPLING CONSTANT USING AVAILABLE EXPERIMENTAL DATA

S.Atashbar Tehrani and

Ali N. Khorramian

Semnan University and

School of Particles and AcceleratorsInstitute for studies in theoretical Physics and Mathemastics

• Motivation• Energy dependence of running coupling • QCD Analysis of non-singlet Structure Function• Fit Results in unpolarized and polarized cases• Conclusion

DETERMINATION OF THE STRONG COUPLING CONSTANT USING AVAILABLE EXPERIMENTAL DATA

Beijing,, Sep. 21-26, 2009

Motivation

Beijing,, Sep. 21-26, 2009

Motivation

Beijing,, Sep. 21-26, 2009

Energy dependence of running coupling

Beijing,, Sep. 21-26, 2009

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

QCD Fit Results

Beijing,, Sep. 21-26, 2009

QCD Fit Results

Beijing,, Sep. 21-26, 2009

QCD Fit results – world data on non-singlet structure (up to NNLO)

Beijing,, Sep. 21-26, 2009

QCD Fit results – world data on non-singlet structure (up to NNNLO)

Beijing,, Sep. 21-26, 2009

QCD Fit results – world data on polarized structure function(up to NNLO)

Beijing,, Sep. 21-26, 2009

Conclusion

Beijing,, Sep. 21-26, 2009

Motivation Energy dependence of running coupling QCD Analysis of non-singlet Structure Function Fit...

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Transcript of Motivation Energy dependence of running coupling QCD Analysis of non-singlet Structure Function Fit...

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