Two-loop soft corrections and resummation of the thrust distribution in the dijet region
By Pier Francesco Monni, Thomas Gehrmann, G. Luisoni. 2011
151 citations recorded by the source corpus.
The thrust distribution in electron-positron annihilation is a classical precision QCD observable. Using renormalization group (RG) evolution in Laplace space, we perform the resummation of logarithmically enhanced corrections in the dijet limit, T → 1 to next-to-next-to-leading logarithmic (NNLL) accuracy. We independently derive the two-loop soft function for the thrust distribution and extract an analytical expression for the NNLL resummation coefficient g3. Our findings confirm earlier NNLL resummation results for the thrust distribution in soft-collinear effective theory. To combine the resummed expressions with the fixed-order results, we derive the log(R)-matching and R-matching of the NNLL approximation to the fixed-order NNLO distribution.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5e1a3dbc64868d0b0236130be176d4d84473201d
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Citations in the corpus
- Predictions for diphoton production at the LHC through NNLO in QCD (2016, background): “The below-cut contribution requires 2-loop soft [60, 61] and beam [62] functions, together with the process-dependent hard function.”
- N-jettiness subtractions for NNLO QCD calculations (2015, background): “For two external partons, κ = qq̄ and κ = gg, the result for the two-loop constant is known analytically [124–126] and does not depend on the whether the partons are incoming or outgoing, i.”