Conveners
MPI & Small-x & diffraction
- Christine Overgaard Rasmussen (Lund University)
MPI & Small-x & diffraction
- Christine Overgaard Rasmussen (Lund University)
MPI & Small-x & diffraction
- Christine Overgaard Rasmussen (Lund University)
MPI & Small-x & diffraction
- Radek Zlebcik (Deutsches Elektronen-Synchrotron (DE))
MPI & Small-x & diffraction
- There are no conveners in this block
In this talk we review current developments regarding small-x and diffractive physics from the viewpoint of Monte Carlo Event Generators. Besides highlighting advances in describing diffractive events we also point out where further work is necessary.
Understanding the properties of nuclear matter and its emergence through the underlying partonic structure and dynamics of quarks and gluons requires a new experimental facility in hadronic physics known as the Electron-Ion Collider (EIC). The EIC will address some of the most profound questions concerning the emergence of nuclear properties by precisely imaging gluons and quarks inside...
Production of heavy photons (Drell-Yan), gauge bosons, Higgs bosons, heavy flavors and dijets, which is treated within the QCD parton model as a result of hard parton-parton collision, can be considered as a bremsstrahlung process in the target rest frame. In this talk, I will discuss the recent progress and the basic features of the diffractive channels of these processes in the framework of...
Inclusive single diffractive dissociation (pp->pX) is studied using data collected by the
ATLAS experiment at the LHC. The intact proton is reconstructed and measured in the
ALFA forward spectrometer, while charged particles from the dissociative system (X)
are reconstructed and measured using the ATLAS inner tracking detector and
calorimeters. Differential cross sections are presented as...
We present an update of the Miettinen-Pumplim (MP) model for diffractive excitation for proton-proton ($pp$) and antiproton-proton ($\bar{p}p$) scattering considering recent LHC data. The energy dependence of the total, elastic, and diffractive cross sections are analyzed and compared to data. The implications of the diffractive excitation in proton-nucleus ($pA$) collisions are also discussed...
An overview of recent diffractive and exclusive measurements with CMS is given. Results on jet-gap-jet event topologies are shown, together with central exclusive p-p production. Diffractive dijet production is measured with proton tagging in pp collisions. In addition, recent results on exclusive rho0 and upsilon production in pPb collisions at 5.02 TeV are presented.
In this talk we present results of a new calculation and Monte Carlo implementation of photon-initiated production in LHC proton-proton collisions. This includes a precise, differential evaluation of both inclusive and semi-exclusive channels, that is with and without rapidity gaps in the final state. Details of the underlying formalism as well as phenomenological results will be presented.
The LHC-forward (LHCf) experiment is dedicated to the measurement of the very forward neutral particle production cross section in proton-proton and proton-lead collisions at the Large Hadron Collider at CERN. The experiment employs two independent detectors, named Arm1 and Arm2, which are placed on opposite sides along the beam line approximately 140 meters away from the interaction point of...
Up to now, searches for saturation have concentrated in the the small-x behaviour of QCD. Here we add the transverse dimension to this type of studies. We present a model of hadrons with an energy-dependent structure in the transverse plane made of hot spot, regions of high gluonic density. Using this model and the colour-dipole formalism we compute the diffractive photoproduction of vector...
We present fits to determine parton distribution functions (PDFs) using top-antitop,
inclusive W/Z-boson, as well as W+ and W− boson production measurements in
association with jets from ATLAS, in combination with deep-inelastic scattering data
from HERA. The ATLAS W and Z boson data exhibit sensitivity to the valence quark
distributions and the light quark sea composition, whereas the...
We present results of calculations of cross sections for production of $\eta_c$(1S)
and $\eta_c$(2S) for the LHC for $\sqrt{s}$ = 7, 8, 13 TeV.
The calculations are performed within $k_t$-factorization approach
for different unintegrated gluon distributions from the literature.
Some of UGDFs include saturation effects.
We discuss effect of the transition $g^* g^* \to \eta_c$ form factors...
