Transverse Momentum Resummation for Z boson Plus Jet Production at the LHC

Peng Sun,Feng Yuan,Bin Yan,C.-P Yan

doi:10.1051/epjconf/202023502003

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We study the transverse momentum resummation effects for the Z boson plus jet associated production at the LHC within the transverse momentum dependent (TMD) factorization formalism. The large logarithm ln (Q2/q⊥2) with Q ≫ q⊥ has been resumed to Next-to-Leading Logarithm (NLL) accuracy. We compare our numerical results to the CMS data by reweighting method. It shows that our prediction agree with the data very well.

Highlights

Study the Z boson and jet associated production at the Large Hadron Collider (LHC) is important for us to test the standard model (SM) and search the possible new physics effects
The next-to-next-to-leading order (NNLO) QCD correction has been finished in Refs. [1,2,3] and it shows that the theoretical uncertainties could be reduced to percent-level
In order to compare our theoretical prediction to data, we apply a reweighting procedure to estimate the effect from imposing kinematic cuts on the leptons from Z boson decay

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Introduction

Study the Z boson and jet associated production at the Large Hadron Collider (LHC) is important for us to test the standard model (SM) and search the possible new physics effects. In order to give a robust prediction and compare it to the experimental data, the higher order QCD correction is necessary. The next-to-next-to-leading order (NNLO) QCD correction has been finished in Refs. For the observables which are sensitive to the soft and collinear radiations (e.g. the total transverse momentum of Z boson and leading jet system), we should use the resummation technique to improve the theoretical prediction, not by the fixed-order calculation. We use the transverse momentum dependent (TMD) factorization formalism to discuss the kinematical distributions of Z boson plus one jet [4]. A similar work based on the soft-collinear effective theory can be found in Ref. A similar work based on the soft-collinear effective theory can be found in Ref. [5]

TMD resummation

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