Conveners
Small x
- Hannes Jung (CMS (CMS Fachgruppe QCD))
Based on: Phys. Rev. D 104, 054039 (2021) [https://arxiv.org/abs/2105.13915]
The Leding-Logarithmic (LL) gluon Sudakov formfactor is derived from rapidity-ordered BFKL evolution with longitudinal-momentum conservation. This derivation further clarifies the relation between High-Energy and TMD-factorizations and can be extended beyond LL-approximation as well.
With the aim of targeting for clear signals of the stabilization of the high-energy resummation under higher-order corrections and energy-scale variation, we investigate the inclusive semi-hard production of two bottom-flavored hadrons, as well as a single bottom-flavored hadron accompanied by a light jet. Working within the hybrid high-energy and collinear factorization formalism, which...
We calculate single-logarithmic corrections to the small-$x$ flavor-singlet helicity evolution equations derived previously at the double-logarithmic approximation. The new single-logarithmic part of the evolution kernel sums up powers of $\alpha_s\ln(1/x)$, which are an important correction to the dominant powers of $\alpha_s\ln^2(1/x)$ summed up previously by the double-logarithmic kernel at...
We discuss Transverse Momentum Dependent (TMD) gluon distributions within high energy factorization at next-to-leading order in the strong coupling within the framework of Lipatov's high energy effective action. Unlike previous results obtained within high energy factorization, our framework allows to recover the complete anomalous dimension associated with Collins-Soper-Sterman (CSS)...
