| 日時: |
2005-05-17 11:00 - |
| 場所: |
研究本館2階220号室 |
| 会議名: |
Flavor structure and coupling selection rule from intersecting D-branes |
| 連絡先: |
丹後 |
| 講演者: |
桧垣 徹太郎 氏 (京都大学大学院理学研究科) |
| 講演言語: |
日本語 |
| アブストラクト: |
We study flavor structure and the coupling selection rule in intersecting D-brane configurations. We formulate the selection rule for Yukawa couplings and its extensions to generic n-point couplings. We investigate the possible flavor structure, which can appear from intersecting D-brane configuration, and it is found that their couplings are determined by discrete abelian symmetry. Our studies on the flavor structure and the coupling selection rule show that the minimal matter content of the supersymmetric standard model would have difficulty to derive realistic Yukawa matrices from stringy 3-point couplings at the tree-level. However, extended models have a richer structure, leading to non-trivial mass matrices.
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