| 日時: |
2003-07-29 16:00 - 17:00 |
| 場所: |
4号舘345室 |
| 会議名: |
物理セミナー「Time-Reversal Non-Invariance in the Neutral Kaon System」 [英語] |
| 連絡先: |
takeshi.komatsubara |
| 講演者: |
Danilo Zavrtanik (Nova Gorica Polytechnic, Slovenia) |
| 講演言語: |
英語 |
| URL: |
http://seminar.kek.jp/physics/ |
| アブストラクト: |
The arrow of time is one of the great mysteries in elementary particle physics. While it is well defined and experimentaly confirmed in the
macrocosm, there was no experimental evidence for time-reversal violation
in the subatomic world. The CPLEAR experiment at CERN has tested the
T-reversal invariance with high precision. An assymetry between the rates (bar)K^0 -> K^0 and K^0 -> (bar)K^0 was observed leading to the first experimental observation of T violation in the microcosm. Within the
experimental accuracy the amount of T violation was found to be equal to
CP violation and is in agreement with CPT invariance. Our observation
suggests that the arrow of time in the microcosm points towards the disappearance of anti-matter in the Universe.
|
