WG4 Experimental summary Emi Kou (LPT, Orsay) Marco Ciuchini (INFN) Timothy John Gershon (Warwick) Hirokazu Ishino (TITech) WG4 experiment summary

Many talks from experiments! a, f2 A. Bevan, A. Somov, C.C. Wang, G. Cavoto, F. Palombo beff, f1eff J. Smith, K. Hara, Y. Chao, E. Di Marco, J. Libby g, f3 E. Barrachini, P. Krokovny, G. Punzi, J. Nardulli Other Mode J. Biesiada, K.F. Chen, G. Vasseur, G. Hou WG4 experiment summary

1000/fb !! KEKB for Belle PEP-II for BaBar As of July 24, 2006 KEKB + PEP-II KEKB for Belle PEP-II for BaBar WG4 experiment summary

WG4 summary of experiments

Isopin triangle WG4 experiment summary

B→pp Adrian Bevan Mixing CPV established by both experiments Direct CPV: 5.5s by Belle, no DCPV by BaBar, need more data! HFAG2006 BaBar has increased p0 efficiency: WG4 experiment summary

B→rr Alexandre Somov [BaBar hep-ex/0612021] submitted to PRL HFAG2006 WG4 experiment summary

Gianluca Cavoto (BaBar) Chin-Chi Wang (Belle) Gianluca Cavoto (BaBar) B→rp time-dependent Dalitz plot analysis involves cos(2f2) 27 parameter fit: one of the most complicate analyses! WG4 experiment summary

Gianluca Cavoto (BaBar) Chin-Chi Wang (Belle) Gianluca Cavoto (BaBar) B→rp WG4 experiment summary

Gianluca Cavoto (BaBar) Chin-Chi Wang (Belle) Gianluca Cavoto (BaBar) B→rp Dalitz+isospin Evidence of Direct CPV! WG4 experiment summary

f2 constraints degrees WG4 experiment summary

first tCPV measurements B→a1p Fernando Palombo first tCPV measurements additional constraints on a (f2) in near future! WG4 experiment summary

WG4 experiment summary

B→h'K0 and SU(3) Jim Smith WG4 experiment summary

b→s Ks vertexing Yuan Chao WG4 experiment summary

b→s quasi-two-body decays Kohji Hara B0r0KS B0fK0 B0wKS B0f0KS WG4 experiment summary

B0→KKK0 Dalitz tCPV Emmanuele Di Marco WG4 experiment summary

B0→KKK0 Dalitz tCPV Emmanuele Di Marco WG4 experiment summary

Chua, talk at FPCP06, hep-ph/0605301 b→s tCPV measurements Chua, talk at FPCP06, hep-ph/0605301 WG4 experiment summary

Sensitivity studies with maximum likelihood fit to toy MC BS→ff @LHCb Jim Libby Assume a single new physics CP violating phase NP such that: Sensitivity studies with maximum likelihood fit to toy MC Large CP asymmetry unambiguous signature of New Physics input 2 fb-1 sensitivity to NP is 0.10 WG4 experiment summary

WG4 experiment summary

Elisabetta Barrachini B→Kp Elisabetta Barrachini WG4 experiment summary

B→Khh Pavel Krokovny B+ -> K+pi+pi- Belle PRD71 092003 (2005) hep-ex/0412066 B+ -> K+pi+pi- BaBar PRD72 072003 (2005) hep-ex/0507004 B0 -> K+pi-pi0 BaBar hep-ex/0408073 B0 -> K+pi-pi0 Belle PRB 599 148 (2004) hep-ex/0406075 B0 -> Kspi+pi- Belle hep-ex/0509047 WG4 experiment summary

B→hh' @ Tevatron Giovanni Punzi Many results comparable with the B-factories, and interesting results on Bs! WG4 experiment summary

Fit results corresponding to L=2fb-1 (secondary fake solution appears) B→hh' @ LHCb Jacopo Nardulli CP sensitivities are then estimated with an extended unbinned maximum likelihood fit to the toy MC sample Fit results corresponding to L=2fb-1 Bd+- BsK+K- (C) 0.043 (0.07*) 0.042 (S) 0.037 (0.09*) 0.044 BdK+- Bs+K- (ACP) 0.003 (0.015*) 0.02 (for L=2fb-1) Extraction of  performed using UTfit bayesian approach and software tools in 3 different scenarios (in this exercise =65o is assumed) (1) Perfect U-spin symmetry d=d’ -  = ’ (2) Weaker assumption: perfect U-spin symmetry just for d, d’ d=d’ - no constraint on , ’ (3) Even weaker: given U-spin breaking for d, d’ d’/d =[0.8, 1.2] no constraint on , ’ Perfect U-spin : Sensitivity ~ 4o Scenario (2) & (3) : Sensitivity ~ 7°-10° (secondary fake solution appears) *From current world average But sensitivity depends on the actual values of C and S… WG4 experiment summary

WG4 experiment summary

Observation of B0→K0K0 and B+→K0K+ B0→KSKS and other b→d Jed Biesiada No signal B0→K+K− Observation of B0→K0K0 and B+→K0K+ 2.5 First measurement WG4 experiment summary

B0→fK* polarization Kai-Feng Chen BaBar 89M, PRL 91, 171802 (2003): Fit fL only, find ~ 0.5 ! Belle 86M, PRL 91, 201801 (2003): angular fit in transversity basis WG4 experiment summary

B0→rK* and other VV polarization Georges Vasseur WG4 experiment summary

B0→VV and baryon George W.S. Hou WG4 experiment summary

VV polarization WG4 experiment summary

Summary Much progress in charmless B decays f2 (a) isospin (pp, rr) + Dalitz plot (rp) time-dependent analyses new a1p tCPV analysis f1eff (beff) sin(2f1eff) values smaller than sin(2f1) New analysis in B→KKK0 using Dalitz plot by BaBar f3 (g) B→hh, B→Khh other modes tCPV in b→d, B→VV Many fruitful results from both B-factories and Hadron experiments. WG4 experiment summary