measurements – Part II Christos Leonidopoulos Columbia/DØ -“Snowmass Studies” July 2, 2001 limiting theoretical & experimental errors expected sensitivity from CDF, D0, BTeV, ATLAS, CMS, LHCb prospects for error improvement SM vs. other model predictions
July 2, 2001Christos Leonidopoulos Phenomenology: SM predictions Accuracy limited by lattice data for operator product /QCD heavy product expansion quenched lattice QCD QCD-NLO
July 2, 2001Christos Leonidopoulos Existing measurements Assuming Without external constraints (expected within ±1%) PDG2001 LEP B-Oscillation Group (CDF-RunI not included) Phenomenology
July 2, 2001Christos Leonidopoulos Phenomenology: beyond the SM SM : CP violation in B S mixing small New physics: large CP violation; affects only ΔΓ S CPV phase in mixing (φ SM ~ 0) determine CPV phase
July 2, 2001Christos Leonidopoulos Experimental methods untagged data samples: sensitivity ~ flavor specific: sensitivity ~ CP eigenstates : sensitivity ~ CP eigenstate + (50%-even, 50%-odd)
July 2, 2001Christos Leonidopoulos …Experimental methods CP eigenstate + (50%-even, 50%-odd) - admixture of CP-even and CP-odd states - the ΔΓ S error depends on the admixture CDF-RunI: (73 ± 19) % CP-even easy trigger!
July 2, 2001Christos Leonidopoulos Expected sensitivity: CDF-RunII ModeSensitivityComments 100% even 73% even 50% even — CDF-RunI: (73 ± 19) % even Notes: SM gives an upper limit of ~20% for ΔΓ S /Γ S To claim a discovery, we need projected #’s RunI to RunII (MC: optimistic)
July 2, 2001Christos Leonidopoulos Expected sensitivity: BTeV Notes: SM gives an upper limit of ~20% for ΔΓ S /Γ S To claim a discovery, we need Remember:
July 2, 2001Christos Leonidopoulos Expected sensitivity: LHC Notes: SM gives an upper limit of ~20% for ΔΓ S /Γ S To claim a discovery, we need Remember: ATLAS, CMS, LHCb:
July 2, 2001Christos Leonidopoulos Phenomenology: prospects Alexander Lenz (Regensburg)
July 2, 2001Christos Leonidopoulos …Phenomenology: prospects Alexander Lenz (Regensburg)
July 2, 2001Christos Leonidopoulos History on ΔΓ S Isard Dunietz (Fermilab)
July 2, 2001Christos Leonidopoulos …History on ΔΓ S Isard Dunietz (Fermilab)
July 2, 2001Christos Leonidopoulos Possible scenarios Matin Martin (Oxford)
July 2, 2001Christos Leonidopoulos Expected sensitivities: References hep-ph/