Working Group 2 of Win2005: Weak decays, CP violation and CKM

Conveners: Patricia Ball (Durham), Christoph Paus (MIT)

Abstract

Since its first observation in 1964 CP violation has fascinated particle physicists. The phenomenon has far reaching consequences for example it is a necessary component in the baryogenesis of our universe. The CKM matrix describes CP violation in the weak sector of the Standard Model. Until the end of the millenium our knowledge of the CKM matrix, responsible for the description of CP violation in the weak sector of the Standard Model, was rather limited. For example large CP violation was predicted for the system of neutral B meson but had not been experimentally observed. By now a chain of precise measurement has rectified this situation and we are now in an era of precision CKM physics. So far none of the measurements disagrees largely with the Standard Model, although there are some interesting indications and there are new opportunities to come. Meanwhile theory predictions have become much more precise and new techniques are been developed to extract the interesting quantities with much reduced uncertainties.

In Working Group 2 of the workshop we want to review the present situation and discuss new opportunities and their implementation with the main focus on results and opportunities in B physics, but there are exciting results from Kaon and Charm physics included as well.

Tuesday 7th June

Session 1 -- Kaon Physics - 90' (9:00 - 10:30)

Kaon Physics Theory Overview - Martin Gorbahn, Durham (pdf) - 20+5
Summary Talk on Rare Kaon Decays - Milind Diwan, BNL (pdf) - 25+5
Summary Talk on CP Violation with Kaons (NA48,KTeV) - Patricia Cenci, Perugia (pdf) - 25+5

Session 2 -- Charm Physics - 90' (11:00 -12:30)

First Results and Prospects in Charm Physics from CLEOC - Anders Ryd, Cornell (pdf) - 25+5
Charm Physics at the B Factories - Fabio Ferrarotto, Rome1 (pdf) - 25+5
CANCELLED -- Charm Physics at CDF - XX (CDF speaker) - 20+5

Session 3 -- Mixing and Lifetimes - 90' (14:00 - 16:00)

Theory Overview of B Lifetimes and Mixing - Federico Mescia, Rome (pdf) 30'+10'
Summary of B Mixing and Lifetimes from the B Factories - Eugenio Paoloni, Pisa (pdf) - 20'+5'
CANCELLED -- B Lifetimes from CDF - Colin Gay, Yale - 20'+5'

Session 4 -- Mixing and Lifetimes - 90' (16:30 - 16:00)

B Lifetimes from D0 - Claus Buszello, Cavendish Laboratory (pdf) - 20'+5'
B0/Bs Mixing from D0 - Chris Barnes, Imperial College (pdf, ppt) - 25'+7'
B0/Bs Mixing from CDF - Christoph Paus, MIT (pdf) - 25'+7'

Wednesday 8th June

Session 5 -- Decays and Spectroscopy - 90' (9:00 - 10:30)

Theory Overview Rare Decays - Martin Gorbahn, Durham (pdf) - 20+5
b->sll, b-> s gamma and other rare B Decays from Belle - Tom Ziegler, Princeton (pdf, ppt) - 20'+5'
Rare Decays at the Hadron Collider (CDF + D0 results) - Frank Lehner, Zuerich (pdf) - 20'+5'
Joined with last talk: Recent Results in Bc Physics (CDF and D0 results) - Frank Lehner, Zuerich (D0 speaker) - 15'+5'

Session 6 -- Decays and Spectroscopy - 90' (11:00 - 12:30)

Electroweak Penguins and Leptonic Decays from BaBar - Francesco Fabozzi, Naples (pdf) - 20'+5'
Recent Bs and LambdaB Decays (CDF + D0 results) - Rick Tesarek, FNAL (pdf) - 20'+5'
Hardronic Physics at the B factories: DsJ, X(3872), Pentaquark Searches, etc - Gianluigi Cibinetto, Ferrara (pdf) - 20'+5'
Recent Results on Pentaquarks and X(3872) from Hadron Colliders - Rick Tesarek, FNAL (pdf) - 15'+5'

Session 7 -- CP Violation - 90' (14:00 - 15:30)

Theory: B -> pipi, New Physics in B-> pi K and Rare K and B Decays - Felix Schwab, Munich (pdf) - 20'+5'
Measurements of the Angle beta both ccbar Ks and Penguin Modes (BaBar + Belle results) - Emanuele Di Marco, Roma1 (pdf) - 25'+5'
Measurements of the Angle alpha: rhorho, rho pi (BaBar + Belle results) - Georges Vasseur, Saclay (pdf, ppt) - 25'+5'

Session 8 -- CP Violation - 90' (16:00 - 17:30)

CPV in pi pi and Measurements of gamma and 2beta+gamma - Maria Rozanska, Krakow (pdf) - 30'+10'
Hadronic Decays of B Mesons: B -> Vector Vector, etc. (BaBar + Belle results) - Diego Monorchio, Naples (pdf, ppt) - 20'+5'
Charmless B Decays from Hadron Colliders - Mauro Donega, Geneva (CDF speaker) - 20'+5' (pdf, ppt) - 20'+5'

Friday 10th June

Session 9 -- Semileptonic B Decays - 90' (9:00 - 10:30)

Theory Overview of Semileptonic Decays - Icarus Bigi, Notre Dame (pdf, ppt) - 20'+5'
Semileptonic B Decays at BaBar - Jan Erik Sundermann, TU Dresden (pdf) - 30'+5'
Semileptonic B Decays at Belle - Isamu Nakamura, KEK (pdf) - 30'+5'

Session 10 -- Future Results - 90' (11:00 - 12:30)

Theory Surprise Speaker: Electric Dipole Moments - David Wark (pdf, ppt) - 15'+5'
Outlook from CDF/D0 - TBA (pdf) - 20'+5'
SuperB - Shoji Uno, KEK (pdf, ppt) - 20'+5'
B Physics with LHCb - Johan Blouw, MPI Heidelberg (pdf) - 20'+5'