Measurement Of The Cp Violating Phase Beta S In B0s J Psi Phi Decays With The Cdf Ii Detector
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Measurement of the CP-Violating Phase Beta_s in B0s -] J/Psi Phi Decays with the CDF II Detector
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Total Pages | : 32 |
Release | : 2012 |
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Download Measurement of the CP-Violating Phase Beta_s in B0s -] J/Psi Phi Decays with the CDF II Detector Book in PDF, Epub and Kindle
We present a measurement of the \CP-violating parameter \betas using approximately 6500 $\BsJpsiPhi$ decays reconstructed with the CDF\, II detector in a sample of $p\bar p$ collisions at $\sqrt{s}=1.96$ TeV corresponding to 5.2 fb${̂-1}$ integrated luminosity produced by the Tevatron Collider at Fermilab. We find the \CP-violating phase to be within the range $\betas \in [0.02, 0.52] \cup [1.08, 1.55]$ at 68% confidence level where the coverage property of the quoted interval is guaranteed using a frequentist statistical analysis. This result is in agreement with the standard model expectation at the level of about one Gaussian standard deviation. We consider the inclusion of a potential $S$-wave contribution to the $\Bs\to J/\psi K+̂K-̂$ final state which is found to be negligible over the mass interval $1.009
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