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 Plus

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

Zendy Tools

Zendy Open

One of the most important O($\alpha_s^2$) corrections to the $B \to X_s\gamma$ branching ratio originates from interference of contributions from thecurrent-current and photonic dipole operators. Its value has been estimatedusing an interpolation in the charm quark mass between the known results at$m_c=0$ and for $m_c \ll m_b/2$. An explicit calculation for the physical valueof $m_c$ is necessary to remove the associated uncertainty. In the presentwork, we evaluate all the ultraviolet counterterm contributions that arerelevant for this purpose.

NNLO QCD counterterm contributions to $B$ \to $X_s \gamma$ for the physical value of $m_c$