物理セミナー/Physics seminar
| カテゴリ | |
|---|---|
| 開始 | 2017/09/05（火）16:00 |
| 終了 | 2017/09/05（火）17:00 |
| 会場 | Room 345, Building #4, Tsukuba-campus (MCU 494) |
| 講演タイトル | b->sll decays, Standard Model and New Physics: facts and fantasy |
| 講演者 | Sébastien Descotes-Genon (LPT Orsay, France) |
| 言語 | 英語/English |
| 連絡先 | hideki.miyake@kek.jp (4896) |
| ウェブサイト | https://www2.kek.jp/physics-seminar/ |
| 食堂・売店 | 利用予定なし／0 |
概要
Recent data on b→sℓ+ℓ− transitions (ℓ=e,μ) exhibit a very interesting pattern of deviations from Standard Model expectations. I will recall the current situation of these anomalies in the B→K∗μ+μ− decay, as well as for other outstanding b→sℓ+ℓ− observables, in particular those indicating a violation of lepton-flavour universality (LFU). I will show how a model-independent global fit of b→sℓ+ℓ− observables favours several New Physics scenarios with high significances, with a remarkable degree of consistency between LFU-violating ratios and b→sμ+μ− observables. I will discuss alternative Standard Model explanations for these anomalies critically, relating them to issues in the corresponding theoretical computation. Finally, I will introduce new LFU-violating observables of interest for LHCb and Belle II which are able to shed further light on the cause of these anomalies.
カテゴリ
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国際会議・研究会
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コロキウム
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セミナー
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談話会・交流会