ipm school and conference on lepton and hadron physics
TRANSCRIPT
Physics Department, Semnan University and
Institute for studies in theoretical Physics and Mathematics
An Approach to NNLO QCD Analysis of NonAn Approach to NNLO QCD Analysis of Non--Singlet Structure Singlet Structure FunctionFunction
In collaboration with S. Atashbar Tehrani
IPM School and Conference on Lepton and Hadron PhysicsIPM-LHP06
ALI N. KHORRAMIAN
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The CCFR Home Page
http://www.nevis.columbia.edu/ccfr
Chicago-Columbia-Fermilab-Rochester
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ResultsResults
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0.2 0.4 0.6 0.8 1x
0.2
0.4
0.6
0.8
xqv
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Non-singlet structure function as function of x.
Conclusion
•• PDFsPDFs can not be calculated from theory and are obtained from fits tocan not be calculated from theory and are obtained from fits to data.data.
•• In this work valence quark distributions is derived from xFIn this work valence quark distributions is derived from xF33 data in the NNLO approximation.data in the NNLO approximation.
•• After calculating After calculating partonparton distributions at scale of Q0, valence quark densities and Nondistributions at scale of Q0, valence quark densities and Non--singlet structure singlet structure function are available.function are available.
•• The results of the NonThe results of the Non--singlet structure function in NNLO approximation are in good agrsinglet structure function in NNLO approximation are in good agreement with other eement with other theoretical model and CCFR experimental data.theoretical model and CCFR experimental data.
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