phi_1 and phi_2 Working Group

Theoretical Issues

• phi_1 from b to ccs

• How large is penguin pollution in Bd -> J/Psi Ks?

• OPE for the up-quark loop (Talk by U. Nierste)

• U-spin analysis (Talk by R. Fleischer)

• New SU(3) relation (Talk by D. Robinson)

• phi_1 from b -> sss

• How large is tree pollution in Bd -> phi Ks, eta' Ks?

• QCD factorization (Talk by S. Jaeger)

• B -> pi K (Fleischer et al., arXiv:0806.2900)

• S_{pi0Ks} and A_{pi0Ks} with the other B->pi K decays, where SU(3) is used to fix the isospin-3/2 amplitude through B^+ -> pi^+ pi^0.

• phi_2

• How large is isospin breaking?

• Lattice attempt for isospin breaking (Talk by C. Sachrajda)

• Time-dependent analysis for radiative decays

• How large are QCD and 1/mb corrections?

• Photon conversion for polarization measurement

Experimental Issues

Workshop Contributions

• Kickoff meeting, June 16-17, workshop @ KEK

• Theory

• Jure Zupan, "Phi_1 & Phi_2 (Alpha & Beta): Theory" (link)

• Experiment

• Luigi Li Gioi, "Phi_1 & Phi_2 (Alpha & Beta): Experiment" (link)

• 1st B2TiP workshop, Oct. 28-31, 2014 @KEK

• phi_1 Theory

• Sebastian Jaeger, "Theory of b -> qqs transitions" (link)

• Martin Jung, “Theory of b -> ccs transitions" (link)

• phi_1 Experiment

• Takeo Higuchi, “phi1 and CPT experiment" (link)

• Luigi Li Gioi, "Expected Belle II performance" (link)

• phi_2 Theory

• Zoltan Ligeti, "Surprises in phi2 (alpha)" (link)

• Guido Martinelli, "Isospin breaking and Lattice” (cancelled)

• phi_2 Experiment

• Pit Vanhoefer, "phi2 Experiment" (link)

• Joint WG2&WG3

• De Fazio, “On the decay modes B->K eta gamma, B->K eta’ gamma" (link)

• Emi Kou, "Exclusive b->s gamma (Theory)" (link)

• WG3 Summary Talk

• Luigi Li Gioi, “WG3 summary" (link)

• 2nd B2TiP workshop, Apr. 27-29, 2015 @Krakow

• phi_1 Theory

• Robert Fleischer, "Theory Errors in the Extraction of beta/phi1" (link)

• Ulrich Nierste, "Uncertainties in the prediction of B mixing observables" (link)

• phi_2 Theory

• Chris Sachrajda, "phi2: Isospin Breaking and QED on the Lattice" (link)

• Experimental talks

• Luigi Li Gioi, “Expected Belle II performances in Time Dependent analysis" (link)

• Marc Grabalosa Gandara, "Status and the prospects of the alpha/beta angles measurement at LHCb" (link)

• Veronika Chobanova, "Measurement of phi_1 in b→ sqq Transitions at Belle II" (link)

• Joint WG2&WG3

• Dean Robinson, "Probing photon polarization in B->K* gamma with conversion" (link)

• Roman Zwicky, "Overview of B->V gamma and some phenomenology" (link)

• WG3 Summary Talks

• Luigi Li Gioi / Satoshi Mishima, “WG3 summary" (link)

• 3rd B2TiP workshop, Oct. 28-29, 2015 @KEK

• phi_1 Theory

• Dean Robinson, “Towards precise determination of the CKM phase beta=phi1" (link)

• Experimental talks

• Fernando Abudinen, "Performance of the Belle II analysis software in Time Dependent Analysis" (link)

• Alessandro Gaz, "Sensitivity study on B to phi K^0" (link)

• Joint WG2&WG3

• Fady Bishara, “B->K* gamma with converted photons" (link)

• Hiroyuki Ishida, “Search for new physics via photon polarization of b to s gamma" (link)

• WG3 Summary

• Jure Zupan, “WG3 summary" (link)