| DATE: |
2005-11-14 13:30 - |
| PLACE: |
Kenkyu Honkan Rm. 321 |
| TITLE: |
Nuclear shadowing and diffraction |
| CONTACT: |
Tango |
| SPEAKER: |
Prof. Mark Strikman (Pennsylvania State University) |
| LANGUAGE: |
English |
| ABSTRACT: |
The Gribov theory of nuclear shadowing is reviewed and extended using
Collins factorization theorem to calculate leading twist shadowing for
parton densities. Connection between the space time picture of the
leading twist scattering in the nucleus rest frame and in the fast
frame is explained. It is also argued that the shadowing at the fixed
target energies is dominated by the interaction with two nucleons
and is likely to contain a significant higher twist contributions.
Extensions of the theory for the calculation of the hard coherent
diffractive processes off nuclei is also described.
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