Non-global logarithms at finite Nc beyond leading order
arXiv:1501.00475 · doi:10.1007/JHEP03(2015)094
Abstract
We analytically compute non-global logarithms at finite Nc fully up to 4 loops and partially at 5 loops, for the hemisphere mass distribution in e+e- to di-jets to leading logarithmic accuracy. Our method of calculation relies solely on integrating the eikonal squared-amplitudes for the emission of soft energy-ordered real-virtual gluons over the appropriate phase space. We show that the series of non-global logarithms in the said distribution exhibits a pattern of exponentiation thus confirming - by means of brute force - previous findings. In the large-Nc limit, our results coincide with those recently reported in literature. A comparison of our proposed exponential form with all-orders numerical solutions is performed and the phenomenological impact of the finite-Nc corrections is discussed.
31 pages, 5 figure, uses jheppub.sty, minor corrections to previous version and added some references
References in corpus (16)
- PYTHIA 6.4 Physics and Manual
- Event generation with SHERPA 1.1
- Herwig++ Physics and Manual
- Jet substructure as a new Higgs search channel at the LHC
- Top-tagging: A Method for Identifying Boosted Hadronic Tops
- Jet substructure as a new Higgs search channel at the LHC
- Boosted objects: a probe of beyond the Standard Model physics
- Strategies to Identify Boosted Tops
- C-parameter Distribution at NLL including Power Corrections
- Multivariate discrimination and the Higgs + W/Z search
- On QCD resummation with kt clustering
- W-jet Tagging: Optimizing the Identification of Boosted Hadronically-Decaying W Bosons
- ColorMath - A package for color summed calculations in SU(Nc)
- Non-global Logarithms at 3 Loops, 4 Loops, 5 Loops and Beyond
- Non-Global Logarithms in Filtered Jet Algorithms
- Hemisphere Soft Function at O(alpha_s^2) for Dijet Production in e+e- Annihilation
Cited by in corpus (6)
- The Analytic Structure of Non-Global Logarithms: Convergence of the Dressed Gluon Expansion
- Factorization for the light-jet mass and hemisphere soft function
- The Asymptotic Form of Non-Global Logarithms, Black Disc Saturation, and Gluonic Deserts
- Transverse Vetoes with Rapidity Cutoff in SCET
- Removing phase-space restrictions in factorized cross sections
- Eikonal gluon radiation at finite-Nc beyond 2 loops