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

The form factors for the $K_{\ell 3}$ semileptonic decay are computed toorder $O(p^4)$ in generalized chiral perturbation theory. The main differencewith the standard $O(p^4)$ expressions consists in contributions quadratic inquark masses, which are described by a single divergence-free low-energyconstant, $A_3$. A new simultaneous analysis is presented for the CKM matrixelement $V_{us}$, the ratio $F_K/F_{\pi}$, $K_{\ell 3}$ decay rates and thescalar form factor slope $\lambda_0$. This framework easily accommodates theprecise value for $V_{ud}$ deduced from superallowed nuclear $\beta$-decays

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Contributions of order<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>O</mml:mi><mml:mo>(</mml:mo><mml:mi>m</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">quark</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msubsup></mml:mrow><mml:mo>)</mml:mo></mml:math>to<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>K</mml:mi></mml:mrow><mml:mrow><…

Contributions of orderO(mquark2)toK<…