The landscape of flavour physics - Rencontres de Moriond

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Tensions within unitarity triangle inputs Measurements feeding into unitarity triangle (UT) are not as perfectly consistent as they appear at first sight. For example >2σ tensions exist when comparing sin2β measured, with that predicted from other measurements eg. here B→τν and ∆m d Must appreciate that UT at present precision can mask 10-20% new physics effects Improved precision required! • angle measurements, especially γ (LHCb) • leptonic decays such as B→τν (Super-B) • improvements from the lattice 14/3/10 The Landscape of Flavour Physics Guy Wilkinson, Moriond QCD 2010 8
B→Kπ CP asymmetry paradox Naïve expectation is that direct CP asymmetry in B + →K + π - same as B 0 →K + π 0 But nature says otherwise: What is explanation? • Accident arising from large colour suppressed tree amplitude? [Gronau and Rosner, PRD 74 (2006) 057503] • Clear sign of new physics, eg. hint of 4 th generation [Arhib et al. PRD 80 (2009) 076005] How to progress? Need measurements in other channels: • Better knowledge of asymmetry in B 0 →K 0 π 0 to test robust sum rules (Super-B) • Complementary measurements in B→ρK, K*π (LHCb) 14/3/10 [Gronau, PLB 627 (2005) 82] The Landscape of Flavour Physics Guy Wilkinson, Moriond QCD 2010 9
Page 1 and 2: The landscape of flavour physics Th
Page 3 and 4: Flavour Physics is Important Many o
Page 5 and 6: Other flavour observables Most othe
Page 7: Something in the distance: oasis or
Page 11 and 12: Search for CPV in B s →J/ψΦ Mix
Page 13 and 14: Flavour experiments: (recent) past
Page 15 and 16: LHCb preliminary LHCb tracking & ca
Page 17 and 18: CPV in B s →J/ψΦ If nature agre
Page 19 and 20: The golden mode: B s→µµ B physi
Page 21 and 22: Charm mixing and CPV at LHCb Mixing
Page 23 and 24: The 3 rd generation experiments: 20

The landscape of flavour physics - Rencontres de Moriond

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