English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We present a preliminary measurement of CP-violation parameters in the decayB0->K+K-Ks, using approximately 465 million BBbar events collected by the BABARdetector at SLAC. Reconstructing the neutral kaon as Ks->pi+pi- or Ks->pi0pi0,we analyze the Dalitz plot distribution and measure fractions to intermediatestates. We extract CP parameters from the asymmetries in amplitudes and phasesbetween B0 and B0bar decays across the Dalitz plot. From a fit to the wholeDalitz plot, we measure beta_eff = 0.44 +/- 0.07 +/- 0.02, A_CP = 0.03 +/- 0.07+/- 0.02, where the first uncertainties are statistical and the second ones aresystematic. For decays to phiKs, we measure beta_eff = 0.13 +/- 0.13 +/- 0.02,A_CP = 0.14 +/- 0.19 +/- 0.02. For decays to f0Ks, we measure beta_eff = 0.15+/- 0.13 +/- 0.03, A_CP = 0.01 +/- 0.26 +/- 0.07. From a fit to the region ofthe Dalitz plot with m_{K+K-}>1.1 GeV/c^2, we measure beta_eff = 0.52 +/- 0.08+/- 0.03, A_CP = 0.05 +/- 0.09 +/- 0.04.

Measurement of CP-Violating Asymmetries in the B0->K+K-Ks Dalitz Plot