Results 1 to 10 of about 1,274 (116)

Transverse-momentum resummation for boson plus jet production at hadron colliders [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We consider the associated production of a vector or Higgs boson with a jet in hadronic collisions. When the transverse momentum $$q_T$$ q T of the boson-jet system is much smaller than its invariant mass Q, the QCD perturbative expansion is affected by ...
Luca Buonocore   +3 more
doaj   +2 more sources

Parton distributions with small-x resummation: evidence for BFKL dynamics in HERA data [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We present a determination of the parton distribution functions of the proton in which NLO and NNLO fixed-order calculations are supplemented by NLLx small-x resummation. Deep-inelastic structure functions are computed consistently at $$\hbox {NLO+NLL}x$$
Richard D. Ball   +5 more
doaj   +2 more sources

Impact of low-x resummation on QCD analysis of HERA data [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low x and low $$Q^2$$ Q2 .
xFitter Developers’ team   +15 more
doaj   +2 more sources

Momentum-space resummation for transverse observables and the Higgs p ⊥ at N3LL+NNLO

open access: yesJournal of High Energy Physics, 2018
We present an approach to the momentum-space resummation of global, recursively infrared and collinear safe observables that can vanish away from the Sudakov region.
Wojciech Bizoń   +4 more
doaj   +3 more sources

Soft Anomalous Dimensions and Resummation in QCD

open access: yesUniverse, 2020
I discuss and review soft anomalous dimensions in QCD that describe soft-gluon threshold resummation for a wide range of hard-scattering processes. The factorization properties of the cross section in moment space and renormalization-group evolution are ...
Nikolaos Kidonakis
doaj   +1 more source

Resummation of threshold logarithms in deeply-virtual Compton scattering

open access: yesJournal of High Energy Physics, 2023
I derive an all-order resummation formula for the logarithmically enhanced contributions proportional to α s n x ± ξ $$ \frac{\alpha_s^n}{x\pm \xi } $$ log ξ ± x 2 ξ k $$ {\left(\frac{\xi \pm x}{2\xi}\right)}^k $$ in the quark coefficient function of ...
J. Schoenleber
doaj   +1 more source

Critical exponents of the O(N)-symmetric $$\phi ^4$$ ϕ 4 model from the $$\varepsilon ^7$$ ε 7 hypergeometric-Meijer resummation

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We extract the $$\varepsilon $$ ε -expansion from the recently obtained seven-loop g-expansion for the renormalization group functions of the O(N)-symmetric model.
Abouzeid M. Shalaby
doaj   +1 more source

NNLL resummation of Sudakov shoulder logarithms in the heavy jet mass distribution

open access: yesJournal of High Energy Physics, 2023
The heavy jet mass event shape has large perturbative logarithms near the leading order kinematic threshold at ρ = 1 3 $$ \rho =\frac{1}{3} $$ . Catani and Webber named these logarithms Sudakov shoulders and resummed them at double-logarithmic level.
Arindam Bhattacharya   +4 more
doaj   +1 more source

QCD resummation in hard diffractive dijet production at the electron-ion collider

open access: yesPhysics Letters B, 2020
Diffractive dijet production at the electron-ion collider (EIC) has been proposed to study the gluon Wigner distribution at small-x. We investigate the soft gluon radiation associated with the final state jets and an all order resummation formula is ...
Yoshitaka Hatta   +3 more
doaj   +1 more source

A numerical formulation of resummation in effective field theory

open access: yesJournal of High Energy Physics, 2019
In this article we show how the resummation of infrared and collinear logarithms within Soft-Collinear Effective Theory (SCET) can be formulated in a way that makes it suitable for a Monte-Carlo implementation.
Christian W. Bauer, Pier Francesco Monni
doaj   +1 more source

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