252 citations · 2.2k across the 45 of their papers we have counts for
35 papers · 1 filter
Electroweak Evolution Equations and Isospin Conservation
Paolo Ciafaloni, Giampaolo Co', Dimitri Colferai +1
In processes taking place at energies much higher than the weak scale, electroweak corrections can be taken into account by using electroweak evolution equations, that are analogou…
Renormalization group improved photon impact factors and the high energy virtual photon scattering
Dimitri Colferai, Wanchen Li, Anna M. Stasto
We perform the renormalization group improved collinear resummation of the photon-gluon impact factors. We construct the resummed cross section for virtual photon-photon ()…
First computation of Mueller Tang processes using the full NLL BFKL approach
Dimitri Colferai, Federico Deganutti, Timothy G Raben +1
We present the full next-to-leading order (NLO) prediction for the jet-gap-jet cross section at the LHC within the BFKL approach. We implement, for the first time, the NLO impact f…
Soft gluon-quark-antiquark emission in QCD hard scattering
Stefano Catani, Leandro Cieri, Dimitri Colferai +1
We consider the radiation of a soft gluon () and a soft quark-antiquark () pair in QCD hard scattering. In the soft limit the scattering amplitude has a singular beha…
Triple (and quadruple) soft-gluon radiation in QCD hard scattering
Dimitri Colferai
We consider the radiation of three soft gluons in a generic process for multiparton hard scattering in QCD. In the soft limit the corresponding scattering amplitude has a singular…
Proceedings of the Low- 2021 International Workshop
L. Alcerro, G. K. Krintiras, C. Royon +24
The purpose of the Low- Workshop series is to stimulate discussions between experimentalists and theorists in diffractive hadronic physics, QCD dynamics at low , parton satur…
Is BFKL factorization valid for Mueller-Tang jets?
Dimitri Colferai
The perturbative QCD description of high-energy hadroproduction of two hard jets separated by a large rapidity gap void of emission (also called Mueller-Tang jets) is based on a fa…
Triple (and quadruple) soft-gluon radiation in QCD hard scattering
Stefano Catani, Dimitri Colferai, Alessandro Torrini
We consider the radiation of three soft gluons in a generic process for multiparton hard scattering in QCD. In the soft limit the corresponding scattering amplitude has a singular…
Improved theoretical description of Mueller-Navelet jets at LHC
Dimitri Colferai, Federico Deganutti, Alessandro Niccoli
We present a method for improving the phenomenological description of Mueller-Navelet jets at LHC, which is based on matching the BFKL resummation with fixed order calculations. We…
The NLO jet vertex in the small-cone approximation for kt and cone algorithms
Dimitri Colferai, Alessandro Niccoli
We determine the jet vertex for Mueller-Navelet jets and forward jets in the small-cone approximation for two particular choices of jet algoritms: the kt algorithm and the cone alg…
Mueller Navelet jets at LHC - complete NLL BFKL calculation
D. Colferai, F. Schwennsen, L. Szymanowski +1
We calculate cross section and azimuthal decorrellation of Mueller Navelet jets at the LHC in the complete next-lo-leading order BFKL framework, i.e. including next-to-leading corr…
Proceedings of the workshop: HERA and the LHC workshop series on the implications of HERA for LHC physics
H. Jung, A. De Roeck, Z. J. Ajaltouni +265
2nd workshop on the implications of HERA for LHC physics. Working groups: Parton Density Functions Multi-jet final states and energy flows Heavy quarks (charm and beauty) Diffracti…
Parton Distributions
M. Dittmar, S. Forte, A. Glazov +37
We provide an assessment of the state of the art in various issues related to experimental measurements, phenomenological methods and theoretical results relevant for the determina…
A solvable model for small-x physics in D > 4 dimensions
Dimitri Colferai
I present a simplified model for the gluon Green's function governing high-energy QCD dynamics, in arbitrary space-time dimensions. The BFKL integral equation (either with or witho…
A matrix formulation for small-x singlet evolution
M. Ciafaloni, D. Colferai, G. P. Salam +1
We propose a matrix evolution equation in (x,kt)-space for flavour singlet, unintegrated quark and gluon densities, which generalizes DGLAP and BFKL equations in the relevant limit…
HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings - Part A
S. Alekhin, G. Altarelli, N. Amapane +191
The HERA electron--proton collider has collected 100 pb of data since its start-up in 1992, and recently moved into a high-luminosity operation mode, with upgraded detectors…
Minimal Subtraction vs. Physical Factorisation Schemes in Small-x QCD
M. Ciafaloni, D. Colferai, G. P. Salam +1
We investigate the relationship of ``physical'' parton densities defined by kt-factorisation, to those in the minimal subtraction scheme, by comparing their small-x behaviour. We f…
HERA and the LHC - A workshop on the implications of HERA for LHC physics: Proceedings - Part B
S. Alekhin, G. Altarelli, N. Amapane +191
The HERA electron--proton collider has collected 100 pb of data since its start-up in 1992, and recently moved into a high-luminosity operation mode, with upgraded detectors…
Parton Distributions: Summary Report
M. Dittmar, S. Forte, A. Glazov +39
We provide an assessment of the impact of parton distributions on the determination of LHC processes, and of the accuracy with which parton distributions (PDFs) can be extracted fr…
Dimensional Regularisation and Factorisation Schemes in the BFKL Equation at Subleading Leve
M. Ciafaloni, D. Colferai
We study the anomalous dimensions and coefficient functions generated by the BFKL equation in 4+2 epsilon dimensions, by investigating both running coupling effects, and the inclus…
The gluon splitting function at moderately small x
Marcello Ciafaloni, Dimitri Colferai, Gavin P. Salam +1
It is widely believed that at small x, the BFKL resummed gluon splitting function should grow as a power of 1/x. But in several recent calculations it has been found to decrease fo…
Parton Distributions
R. S. Thorne
I discuss our current understanding of parton distributions. I begin with the underlying theoretical framework, and the way in which different data sets constrain different partons…
Renormalisation group improved small-x Green's function
M. Ciafaloni, D. Colferai, G. P. Salam +1
We investigate the basic features of the gluon density predicted by a renormalisation group improved small-x equation which incorporates both the gluon splitting function at leadin…
Extending QCD perturbation theory to higher energies
M. Ciafaloni, D. Colferai, G. P. Salam +1
On the basis of the results of a new renormalisation group improved small-x resummation scheme, we argue that the range of validity of perturbative calculations is considerably ext…