| DATE: |
2005-06-27 15:30 - |
| PLACE: |
Kenkyu Honkan Rm. 321 |
| TITLE: |
Recent progress in high energy QCD |
| CONTACT: |
tango |
| SPEAKER: |
Dr. Kazunori Itakura (KEK) |
| LANGUAGE: |
Japanese |
| ABSTRACT: |
I will firstly explain the basic concepts behind the physics of Color Glass Condensate (CGC), which appears as the universal state of hadrons and nuclei in very high-energy scatterings. The CGC is made of high density gluons which have only a small franctions of the total momentum, and is characterized by coherent strong gauge fields. The density is saturated (typically of the order of $1/\alpha_s$), which is induced by recommbination process of two gluons into one (that is relevant when the gluon density is high). Theoretically, the CGC can be described by the weak-coupling technique since the typical transverse momentum of gluons, "saturation momentum", $Q_s$ becomes large enough at high energies. I will also discuss recent progress in phenomenological description of the DIS data at small $x$ and in theoretical description of the Odderon exchange which is odd under the charge conjugation. |
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