Séminaire LAL - "CP violation across multiple generations of families and experiments"

par Jonas Rademaker (Bristol University)

mardi 28 mai 2013, 11:00 → 12:00 Europe/Paris

Salle 101 (LAL)

Flavour physics is highly sensitive to physics beyond the Standard Model, especially through the effects of loop diagrams. Comparing these measurements to the Standard Model values can reveal New Physics. In many cases, the New-Physics sensitive measurements are much more precise than our knowledge of the expected Standard Model values. So we might be staring New Physics in the face without realising it. We find ourselves in the paradoxical situation that one of the best ways to increase the New Physics sensitivity of flavour physics is to measure Standard Model benchmark values in processes unlikely to be affected by New Physics. A key parameter is the CP violating phase gamma. In this seminar we present methods and first results for a theoretically and experimentally clean measurement of gamma. We focus especially on Dalitz analyses and their 5-dimensional, four-body generalisations, and on the crucial input from quantum-correlated D meson pairs at the charm threshold. We also present experimentally closely related results on CP violation in D mesons, which are sensitive to very different New Physics scenarios.

Poster Sem_20130528.pdf

Transparents LAL_SeminarFlavourRademacker.pdf