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/

Zendy Open

Presents the pdf analysis as premium feature

PDF Analysis

Insights

Presents the summarisation as premium feature

Summarisation

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

We propose a new method to extract the CKM phase angle \gamma (\equiv \phi_3)from the isospin analysis in B \to K \pi decays. Unlike previously proposedmethods, we do not employ flavor SU(3) symmetry, so that this method is freefrom the hadronic uncertainty coming from the SU(3) breaking effect. Neither weadopt any Dalitz-plot analysis, which may involve multiple strong phases andlarge final state interactions. After including small CP violating terms in B^+\to K^0 \pi^+ and color-suppressed electroweak penguin contribution in B^0 \toK^+ \pi^-, whose values are estimated from the QCD factorization, we obtain\gamma = ({70}^{+5 +1 +2}_{-14 -1 -3})^\circ \textrm{or} {106^\circ}< \gamma <{180^\circ}. The first error is due to the experimental errors mainly caused bymixing-induced CP asymmetry S_{{K_s} \pi^0}. The second and third errors comefrom the theoretical uncertainty for two above-mentioned small contributions,respectively. Since we utilize only the isospin relations in B \to K \pidecays, this method will work well, regardless of possible new physics effectsunless the isospin relations do not hold.

Extracting the CKM phase angle \gamma(\equiv \phi_3) from isospin analysis in B\to K \pi decays