Transcript
Page 1: First Evidence for B  DK ADS Mode

First Evidence for BDK ADS Mode Signal seen with 4.1σ

significance with improvedcontinuum suppression (NB).

Ratio to favored mode:

Asymmetry:

Important information for ϕ3.

PRL 106, 231803 (2011)

RDK and ADK varies in [0.2, 2.5] x 10-2 and [-0.9, 0.9], respectively, depending on ϕ3 and strong phase (assuming rB = 0.1).

continuumSignal

DπBB

Page 2: First Evidence for B  DK ADS Mode

First Evidence for BD*K ADS Mode Continuum suppression with:

Signal seen with 3.5σsignificance for D*Dγ mode.

Ratio to favored mode:

Difference between RDπ0 and RDγ: indication of the effect of the interference term 2rB*rD cos (δB*+δD) cos ϕ3 (opposite sign for RDπ0 and RDγ).

Preliminary

continuumSignalD*π

BBDK/Dπ

SignalD*π

BBDK/Dπ

continuum

Page 3: First Evidence for B  DK ADS Mode

Asymmetries for BD*K ADS Mode Asymmetry:

Indication of opposite signfor ADπ0 and ADγ:consistent with expectation.(Opposite strong phasebetween D*Dπ0 and D*Dγ.)

Combining RDπ0, RDγ, ADπ0, and ADγ: indication of negative cos(δB*+δD)cosϕ3 and positive sin(δB*+δD)sinϕ3. Consistent with BD(*)K Dalitz result.

Preliminary

Page 4: First Evidence for B  DK ADS Mode

Backup slides

Page 5: First Evidence for B  DK ADS Mode

Suppressed BDπ, DKπ

Ratio to favored mode:

SM expectation: RDπ ~ rD2 = 3.3 x 10-3 (HFAG

’10). Asymmetry:

SM expectation: ADπ ~ 0.

PRL 106, 231803 (2011)

DKBB

continuumDπ

Page 6: First Evidence for B  DK ADS Mode

Suppressed BD*π, D*Dπ0/γ, DKπ

Significances are 4.8σ and 4.7σfor π0 and γ modes, respectively.

Ratio to favored mode:

Consistent with the SM:R ~ rD

2 = 3.3 x 10-3 (HFAG ’10).

Preliminary

continuum

D*K

BBDK/Dπ

D*πD*K

BBDK/Dπ

continuumD*π

Page 7: First Evidence for B  DK ADS Mode

Asymmetries for BD*π, D*Dπ0/γ, DKπ

Asymmetry:

Consistent with the SM: A ~ 0.

Preliminary


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