194 citations · 3.1k across the 104 of their papers we have counts for
35 papers · 1 filter
A functional RG approach for the BFKL Pomeron
J. Bartels, C. Contreras, G. P. Vacca
In this paper we encode the perturbative BFKL leading logarithmic resummation, relevant for the Regge limit behavior of QCD scattering amplitudes, in the IR-regulated effective act…
Vacuum energy, Standard Model physics and the Diphoton Excess at the LHC
Alexander Y. Kamenshchik, Alexei A. Starobinsky, Alessandro Tronconi +2
The conditions for the cancellation of one loop contributions to vacuum energy (both U.V. divergent and finite) coming from the known (Standard Model) fields and the field associat…
NLO Corrections to the kernel of the BKP-equations
J. Bartels, V. S. Fadin, L. N. Lipatov +1
We present results for the NLO kernel of the BKP equations for composite states of three reggeized gluons in the Odderon channel, both in QCD and in N=4 SYM. The NLO kernel consist…
PT Symmetry and Renormalization in a Pomeron Model
G. P. Vacca
A novel perturbative analysis for the 2+1 local supercritical field theory of pomerons is developed. It is based on the PT symmetry of the model which allows to study a similar Ham…
Inclusive One Jet Production With Multiple Interactions in the Regge Limit of pQCD
G. P. Vacca
DIS on a two nucleon system in the regge limit is considered. In this framework a review is given of a pQCD approach for the computation of the corrections to the inclusive one jet…
PT Symmetry and Hermithean Hamiltonian in the Local Supercritical Pomeron Model
M. A. Braun, G. P. Vacca
The local reggeon field theory is studied perturbatively taking advantage of the PT symmetry in the Hamiltonian formulation. In the lowest non trivial order we show that the pomero…
Inclusive 1-jet Production Cross Section at Small x in QCD: Multiple Interactions
J. Bartels, M. Salvadore, G. P. Vacca
We study corrections due to two Pomeron exchanges to the inclusive 1-jet production cross section in the Regge limit of perturbative QCD for a finite number of colors. By consideri…
12th International Conference on Elastic and Diffractive Scattering (Blois Workshop) - Forward Physics and QCD
J. Bartels, K. Borras, M. Diehl +118
Proceedings of the 12th International Conference on Elastic and Diffractive Scattering (Blois Workshop) - Forward Physics and QCD
Multiple interactions and AGK rules in pQCD
J. Bartels, M. Salvadore, G. P. Vacca
We review some aspects of multiple interactions in High Energy QCD; we discuss in particular AGK rules and present some results concerning multiple interactions in the context of j…
On the 'toy model" in the Reggeon field theory
M. A. Braun, G. P. Vacca
The Reggeon field theory with zero transverse dimensions is studied in the Hamiltonian formulation for both sub-and supercritical pomeron. Mathematical aspects of the model, in par…
Representations of the LL BFKL Kernel and the Bootstrap
G. P. Vacca
Different forms of the BFKL kernel both in coordinate and momentum representations may appear as a result of different gauge choices and/or inner scalar products of the color singl…
Deformed Spectral Representation of the BFKL Kernel and the Bootstrap for Gluon Reggeization
J. bartels, L. N. Lipatov, M. Salvadore +1
We investigate the space of functions in which the BFKL kernel acts. For the amplitudes which describe the scattering of colorless projectiles it is convenient to define, in transv…
AGK Cutting Rules and Multiple Scattering in Hadronic Collisions
J. Bartels, M. Salvadore, G. P. Vacca
We discuss the AGK rules for the exchange of an arbitrary number of reggeized gluons in perturbative QCD in the high energy limit. Results include the cancellation of corrections t…
Small x evolution: BFKL vs Dipole Picture
G. P. Vacca
The relation between the two approaches is discussed both in the linear and nonlinear regimes. It is connected to the gauge invariance and Moebius symmetry in LL perturbative QCD.…
Pomeron Vertices in Perturbative QCD in Diffractive Scattering
J. Bartels, M. Braun, G. P. Vacca
We analyse the momentum space triple Pomeron vertex in perturbative QCD. In addition to the standard form of this vertex which is used in the context of total cross-sections at hig…
Small x QCD
G. P. Vacca
A review of some theoretical aspects of small x QCD physics is given, with a particular emphasis to the relation between the BFKL and the colour dipole approaches. The nonlinear ev…
QCD Corrections to Electroweak Vector Boson Scattering at Small Scattering Angles
Krisztian Peters, Gian Paolo Vacca
We investigate the role of a certain class of QCD corrections to electroweak vector boson scattering at small scattering angles and large energies. These are present since, from th…
The Process gamma* + p -> eta_c + X: A Test for the Perturbative QCD Odderon
J. Bartels, M. A. Braun, G. P. Vacca
The rates of inclusive photo- and electroproduction of the eta_c meson: gamma* + p -> eta_c + X are calculated in the triple Regge region, integrated over the diffractive mass X. F…
Jet Vertex in the Next-to-Leading log(s) Approximation
G. P. Vacca
The next-to-leading corrections to the jet vertex which is relevant for the Mueller-Navelet jets production in hadronic collisions and for the forward jet cross section in lepton-h…
Jets at high energies, factorization and jet vertex in NL ln(s)
G. P. Vacca
The next-to-leading corrections to the jet vertex which is relevant for the Mueller-Navelet jets production in hadronic collisions and for the forward jet cross section in lepton-h…
On the Triple Pomeron Vertex in Perturbative QCD
J. Bartels, M. G. Ryskin, G. P. Vacca
We estimate the size of the triple Pomeron vertex in perturbative QCD and compare with the phenomenological value extracted from Regge fits to experimental data. For simplicity, th…
The NLO Jet Vertex for Mueller-Navelet and Forward Jets: the Gluon Part
J. Bartels, D. Colferai, G. P. Vacca
In this paper we complete our calculation of the NLO jet vertex which is part of the cross section formulae for the production of Mueller Navelet jets at hadron hadron colliders an…
The NLO Jet Vertex for Mueller-Navelet and Forward Jets: the Quark Part
J. Bartels, D. Colferai, G. P. Vacca
We calculate the next-to-leading corrections to the jet vertex which is relevant for the Mueller-Navelet-jets production in p-pbar collisions and for the forward jet cross section…
Perturbative QCD Odderon and Diffractive eta_c Production
G. P. Vacca
The Odderon state in perturbative QCD is briefly reviewed. Recent calculations devoted to estimate the diffrative eta_c production at high energies from the leading known Odderon s…