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Summary of the Paris workshop on charmless 3 body B decays. Thank you all who came or wanted to come to the workshop. http://lpnhe-babar.in2p3.fr/3BodyCharmlessWS/. Workshop on Charmless hadronic rare Decays, BABAR Collab. Meeting. What happened. Why charmless 3Body B decays ? Where we are
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Summary of the Paris workshop on charmless 3 body B decays Thank you all who came or wanted to come to the workshop http://lpnhe-babar.in2p3.fr/3BodyCharmlessWS/ Workshop on Charmless hadronic rare Decays, BABAR Collab. Meeting
What happened • Why charmless 3Body B decays ? • Where we are • What we want • Example of a full DP analysis • Experimental issues • Theoretical approaches • Discussion • Prospects and outlook 1st session intended for (under)graduates Gautier Hamel de Monchenault: Forty Years of Heavy Flavor Physics Geraldine Servant: CP Violation in Neutrinos, Astro-particles,Cosmology and Beyond the Standard Model Luis Oliver: The Present Context of B Physics and Three-Body Decays
Example of a full DP analysis Jin Wei Wu
Sébastien Descôtes-Genon Tim Gershon’s summary talk
E791 vs LASS. Watson’s theorem Antimo Palano’s second talk Brian Meadow’s fit in E791 Milind Purohit’s talk
Theoretical approaches • Bruno El-Bennich on meson-meson scatteringà la FKLL • Scalar meson form factors by Ulf Meissner • Charming penguins by Maurizio Pierini • Bernard Pire on 2-meson Generalized Distribution Amplitudes QCD inspired effective theories are operative for Q2B. Ideas are coming to deal with 3-Body decays as explained by • Martin Benecke (Heavy Quark Expansion) • Iain Stewart (SCET), who also gave the LPNHE seminar
Items for discussion • Extrapolation from low energy to B mass • Model-independent effective theories: from Q2B to 3B • Charming Penguins • BBNS vs BPRS • Outside the pi,K realm • Presentation of results • Experimental issues • GPDA • Isobar vs. K-matrix vs ... • - Kpi, pipi, KK scattering • - Universal parametrisation? 2 • Baryonic decays • - eta, eta' ... • transportation from system to system? • cutting out parts of the DP? • - Why are 3pi and 3K so different? • - Ambiguities in phase shifts? 5 7 - Control samples - Reconstruction issues: - mass constraints, efficiencies, mis-reco - Background issues - continuum vs B-related - B-fact vs LHCb - case for super-B(elle) - Likelihood fit issues - GOF - ambiguities, mirror solutions, stability... 1 • Comparison? Discrepancies? • Solution? 4 • Graphical tools: 3d-animations, sPlots, other? • - Level of details in publications 6
Prospects and Outlook • Arnaud Robert’s talk on LHCb. • Summary talk by Tim Gershon Closing remarks: • Writeups welcome (high demand for some talks) • Should this workshop recur?