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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We measure the direct CP violation asymmetry, A_CP, in B to X_s gamma and theisospin difference of the asymmetry, Delta A_CP, using 429 fb^-1 of datacollected at Upsilon(4S) resonance with the BaBar detector at the PEP-IIasymmetric-energy e+e- storage rings operating at the SLAC National AcceleratorLaboratory. B mesons are reconstructed from 10 charged B final states and 6neutral B final states. We find A_CP = +(1.7 +- 1.9 +- 1.0)%, which is inagreement with the Standard Model prediction and provides an improvement on theworld average. Moreover, we report the first measurement of the differencebetween A_CP for charged and neutral decay modes, Delta A_CP = +(5.0 +- 3.9 +-1.5)%. Using the value of Delta A_CP, we also provide 68% and 90% confidenceintervals on the imaginary part of the ratio of the Wilson coefficientscorresponding to the chromo-magnetic dipole and the electromagnetic dipoletransitions.

Measurements of Direct CP Asymmetries in B to X_s gamma decays using Sum of Exclusive Decays