A model-independent Dalitz plot analysis of with () decays and constraints on the CKM angle γ
. (2012) A model-independent Dalitz plot analysis of with () decays and constraints on the CKM angle γ. Physics Letters B, Vol.718 (No.1). pp. 43-55. ISSN 0370-2693 Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.physletb.2012.10.020
A binned Dalitz plot analysis of B ±→DK ± decays, with D→KS0π+π- and D→KS0K+K-, is performed to measure the CP-violating observables x ± and y ± which are sensitive to the CKM angle γ. The analysis exploits 1.0 fb -1 of data collected by the LHCb experiment. The study makes no model-based assumption on the variation of the strong phase of the D decay amplitude over the Dalitz plot, but uses measurements of this quantity from CLEO-c as input. The values of the parameters are found to be x -=(0.0±4.3±1.5±0.6)×10 -2, y -=(2.7±5.2±0.8±2.3)×10 -2, x +=(-10.3±4.5±1.8±1.4)×10 -2 and y +=(-0.9±3.7±0.8±3.0)×10 -2. The first, second, and third uncertainties are the statistical, the experimental systematic, and the error associated with the precision of the strong-phase parameters measured at CLEO-c, respectively. These results correspond to γ=(44-38+43)°, with a second solution at γ→γ+180°, and r B=0.07±0.04, where r B is the ratio between the suppressed and favoured B decay amplitudes. © 2012 CERN.
|Item Type:||Journal Article|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Physics Letters B|
|Publisher:||Elsevier Science BV|
|Date:||15 November 2012|
|Page Range:||pp. 43-55|
|Access rights to Published version:||Restricted or Subscription Access|
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