determination of the strong coupling constant using available experimental data

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DETERMINATION OF THE STRONG COUPLING CONSTANT USING AVAILABLE EXPERIMENTAL DATA S.Atashbar Tehrani and Ali N. Khorramian Semnan University and School of Particles and Accelerators Institute for studies in theoretical Physics and Mathemastics (IPM)

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Determination of the strong coupling constant using available experimental data . S.Atashbar Tehrani and Ali N. Khorramian Semnan University and School of Particles and Accelerators Institute for studies in theoretical Physics and Mathemastics (IPM) . - PowerPoint PPT Presentation

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Page 1: Determination of the strong coupling constant using available experimental data

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

(IPM)

Page 2: Determination of the strong coupling constant using available experimental data

• 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

Page 3: Determination of the strong coupling constant using available experimental data

Motivation

Beijing,, Sep. 21-26, 2009

Page 4: Determination of the strong coupling constant using available experimental data

Motivation

Beijing,, Sep. 21-26, 2009

Page 5: Determination of the strong coupling constant using available experimental data

Energy dependence of running coupling

Beijing,, Sep. 21-26, 2009

Page 6: Determination of the strong coupling constant using available experimental data

Energy dependence of running coupling

Beijing,, Sep. 21-26, 2009

Page 7: Determination of the strong coupling constant using available experimental data

Beijing,, Sep. 21-26, 2009

Energy dependence of running coupling

Page 8: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 9: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 10: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 11: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 12: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 13: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 14: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 15: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 16: Determination of the strong coupling constant using available experimental data

QCD Analysis of non-singlet Structure Function

Beijing,, Sep. 21-26, 2009

Page 17: Determination of the strong coupling constant using available experimental data

QCD Fit Results

Beijing,, Sep. 21-26, 2009

Page 18: Determination of the strong coupling constant using available experimental data

QCD Fit Results

Beijing,, Sep. 21-26, 2009

Page 19: Determination of the strong coupling constant using available experimental data

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

Beijing,, Sep. 21-26, 2009

Page 20: Determination of the strong coupling constant using available experimental data

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

Beijing,, Sep. 21-26, 2009

Page 21: Determination of the strong coupling constant using available experimental data

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

Beijing,, Sep. 21-26, 2009

Page 22: Determination of the strong coupling constant using available experimental data

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

Beijing,, Sep. 21-26, 2009

Page 23: Determination of the strong coupling constant using available experimental data

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

Beijing,, Sep. 21-26, 2009

Page 24: Determination of the strong coupling constant using available experimental data

Conclusion

Beijing,, Sep. 21-26, 2009

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