Confidence levels in the large (rhobar,etabar) plane obtained from the global fit.
The constraint from the WA sin2beta/phi1 (from charmoniom modes - see average from HFAG) is overlaid.
Confidence levels in the large (rhobar,etabar) plane obtained from the global fit.
The constraint from the WA sin2beta/phi1 (from charmoniom modes - see average from HFAG) is included in the fit.
Confidence levels in the large (rhobar,etabar) plane obtained from the global fit.
The constraint from the WA sin2beta/phi1 (from all modes - see average from HFAG) is overlaid.
Confidence levels in the large (rhobar,etabar) plane obtained from the global fit.
The constraint from the WA sin2beta/phi1 (from all modes - see average from HFAG) is included in the fit.
Confidence levels in the large (rhobar,etabar) plane obtained from the global fit.
The constraints from sin2beta/phi1 from charmonium modes and from b->s penguin modes are
overlaid - see HFAG.
Confidence levels in the large (rhobar,etabar) plane obtained from the global fit.
The constraints from sin2beta/phi1 from charmonium modes and from B->phiKs are
overlaid - see HFAG.
B->pi+pi- penguin to tree ratio: using as input the measured
Cpp and Spp coefficients (see HFAG) together with the Wolfenstein parameters rhobar and
etabar from the Global CKM fit using standard constraints, one can infer
module and phase of the complex penguin to tree (P/T) ratio in B-> pi+pi-
decays within the Standard Model.
This plot shows the confidence level representation of the P/T phase versus its
module.
Constraining alpha/phi2: using as input the measured Cpp and Spp
coefficients together with the present pipi branching fractions of all charges
and B flavors including the newly discovered pi0pi0 (see
HFAG),
one can perform various numerical analyses aiming at a constraint on alpha/phi2.
The Gronau-London SU(2) analysis (electroweak penguins and
other SU(2)-breaking sources are neglected here).
Assuming SU(3) symmetry, one can identify the module of the penguin occurring in the pi+pi-
amplitude with the Cabibbo-enhanced penguin in Bd decays to K+pi- No
SU(3)-breaking corrections are applied here.
Assuming SU(3) symmetry, one can identify the module of the penguin occurring
in the pi+pi- amplitude with the penguin decay of a B+ to K0pi+.
First order SU(3)-breaking corrections have been applied here.
In contrast to the phenomenological methods above, once can apply
QCD Factorization (BBNS) predicting the complex penguin-to-tree ratio,
to constrain a from the time-dependent CP measurement.
The confidence levels obtained with these methods are shown in the
right hand figure. It is compared to the constraint obtained
from the global CKM fit using the standard constraints (including the HFAG average of sin(2ß).