We measure the time-dependent CP asymmetry in B0→KS0π0γ decays for two regions of KS0-π0 invariant mass, m(KS0π0), using the final BABAR data set of 467×10^6 BB̅ pairs collected at the PEP-II e+e- collider at SLAC. We find 339±24 B0→K*0γ candidates and measure SK*γ=-0.03±0.29±0.03 and CK*γ=-0.14±0.16±0.03. In the range 1.1<m(KS0π0)<1.8 GeV/c2 we find 133±20 B0→KS0π0γ candidates and measure SKS0π0γ=-0.78±0.59±0.09 and CKS0π0γ=-0.36±0.33±0.04. The uncertainties are statistical and systematic, respectively.
Measurement of time-dependent CP asymmetry in B0→KS0π0γ decays
GAZ A;SIMI, GABRIELE;MARGONI, MARTINO;SIMONETTO, FRANCO;STROILI, ROBERTO;VOCI, CESARE;
2008
Abstract
We measure the time-dependent CP asymmetry in B0→KS0π0γ decays for two regions of KS0-π0 invariant mass, m(KS0π0), using the final BABAR data set of 467×10^6 BB̅ pairs collected at the PEP-II e+e- collider at SLAC. We find 339±24 B0→K*0γ candidates and measure SK*γ=-0.03±0.29±0.03 and CK*γ=-0.14±0.16±0.03. In the range 1.1File in questo prodotto:
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