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May 6 – 10, 2019
Canada/Pacific timezone

Impacts of QED radiative corrections on R(D) ratios

May 8, 2019, 2:55 PM
Bob Wright, B150

Bob Wright, B150

Contributed Oral CP Violation in Hadrons and Leptons Parallel session 1


Dr Suzanne Klaver (INFN e Laboratori Nazionali di Frascati (IT))


A recent paper (Phys. Rev. Lett. 120, 261804) presented a new evaluation of radiative corrections in the decay channels involved in the ratios $\mathcal{R}(D^+)$ and $\mathcal{R}(D^0)$, which could explain part of the discrepancy between measurements and SM predictions. Using simulated events we quantify the difference between the results in this paper and Photos, which is used to simulate radiative corrections both by LHCb and the B-factories. In addition, we designed a simplified analysis in LHCb to quantify the effect of neglecting radiative corrections on measurements of $\mathcal{R}(D^+)$ and $\mathcal{R}(D^0)$. A paper on this analysis will be submitted to a journal shortly.

Primary author

Dr Suzanne Klaver (INFN e Laboratori Nazionali di Frascati (IT))

Presentation materials