| 日時: |
2005-04-26 16:00 - 17:00 |
| 場所: |
4号館3F輪講室345 |
| 会議名: |
Ds0+(2317) - D0(2308) mass difference as evidence for tetraquarks |
| 連絡先: |
物理セミナー世話人 |
| 講演者: |
Dr. Veljko Dmitrasinovic (Vinca Institute, Belgrade, Serbia/ 阪大RCNP) |
| 講演言語: |
英語 |
| URL: |
http://seminar.kek.jp/physics |
| アブストラクト: |
I argue that the anomalously small mass difference between
the $D_{s0}^{+}(2317)$ and the recently observed $D_{0}(2308)$
(Belle) state is the first ``smoking gun" experimental evidence of
their tetraquark ($cq({?bar q}{?bar q})$) structure. The recently
reported $D_{sJ}^{+}$(2632) (SELEX) state fits into
the low-lying non-exotic tetraquark spectrum, as predicted by
the 't Hooft's instanton-induced effective quark interaction.
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