Speakers
Description
We constrain the non-perturbative initial condition to the next-to-leading order (NLO) Balitsky-Kovchegov (BK) equation by comparing NLO DIS calculations to both the HERA total inclusive cross section and the charm quark production datasets. This global approach is done through our well-tested Bayesian framework, used in previous analysis [1] as well. The cross sections are calculated by convoluting the NLO DIS hard factors with the NLO BK equation, improved by resumming contributions enhanced by large single and double transverse logarithms. The Bayesian framework extracts the posterior distributions of the parameters that define the initial condition. We obtain an excellent description of the precise small-$x$ reduced cross section data. The resulting posterior distributions provide a rigorous way to propagate uncertainties of the initial dipole amplitude, necessary to all NLO calculations in the color glass condensate framework.
| Speaker confirmation | Yes |
|---|