Multiparton Interactions with an x-dependent Proton Size
arXiv:1101.5953 · doi:10.1007/JHEP05(2011)009
Abstract
Theoretical arguments, supported by other indirect evidence, suggest that the wave function of high-x partons should be narrower than that of low-x ones. In this article, we present a modification to the variable impact parameter framework of Pythia 8 to model this effect. In particular, a Gaussian hadronic matter profile is introduced, with a width dependent on the x value of the constituent being probed. Results are compared against the default single- and double-Gaussian profiles, as well as an intermediate overlap function.
References in corpus (8)
- PYTHIA 6.4 Physics and Manual
- Event generation with SHERPA 1.1
- Herwig++ Physics and Manual
- Interleaved Parton Showers and Tuning Prospects
- Simulation of multiple partonic interactions in Herwig++
- Soft processes at the LHC, I: Multi-component model
- Fluctuations, Saturation, and Diffractive Excitation in High Energy Collisions
- On the High Energy Behaviour of The Total Cross Section in the QCD Dipole Model
Cited by in corpus (35)
- An Introduction to PYTHIA 8.2
- EPOS LHC : test of collective hadronization with LHC data
- Merging Multi-leg NLO Matrix Elements with Parton Showers
- Elements of a theory for multiparton interactions in QCD
- Measurement of pion, kaon and proton production in proton-proton collisions at TeV
- Multiplicity dependence of the average transverse momentum in pp, p-Pb, and Pb-Pb collisions at the LHC
- Pseudorapidity and transverse-momentum distributions of charged particles in proton-proton collisions at = 13 TeV
- Light-quark and gluon jet discrimination in pp collisions at = 7 TeV with the ATLAS detector
- Constraining MPI models using sigma_effective and recent Tevatron and LHC Underlying Event data
- Logarithmic accuracy of parton showers: a fixed-order study
- A fresh look at double parton scattering
- Glauber modeling of high-energy nuclear collisions at sub-nucleon level
- Progress in the Glauber model at collider energies
- Measurement of the production cross-section as a function of jet multiplicity and jet transverse momentum in 7 TeV proton-proton collisions with the ATLAS detector
- Practical improvements and merging of POWHEG simulations for vector boson production
- Correlations in double parton distributions at small x
- Angular correlations in the double Drell-Yan process
- Positivity bounds on double parton distributions
- Extracting sigma_effective from the CDF gamma+3jets measurement
- Supersymmetry and Generic BSM Models in PYTHIA 8
- A Monte-Carlo Simulation of Double Parton Scattering
- CMS PYTHIA 8 colour reconnection tunes based on underlying-event data
- Improving the description of multiple interactions in Herwig
- Combining single and double parton scatterings in a parton shower
- Sequential recombination algorithm for jet clustering and background subtraction
- Double parton scattering in four-jet production in proton-proton collisions at the LHC
- Evolution and interpolation of double parton distributions using Chebyshev grids
- Measurement of inclusive electrons from open heavy-flavor hadron decays in + collisions at GeV with the STAR detector
- Average Event Properties from LHC to FCC-hh
- Studying minijets and MPI with rapidity correlations
- Comparative Analysis of Jet and Underlying Event Properties Across Various Models as a Function of Charged Particle Multiplicity at 7 TeV
- Four-jet double parton scattering production in proton-nucleus collisions within the PYTHIA8 framework
- On sum rules for double and triple parton distribution functions and Pythia's model of multiple parton interactions
- Quark-Parton Fusion and the Scaling of Hadron Production at the LHC
- Results on identified particle production in pp, p-Pb and Pb-Pb collisions measured with ALICE at the LHC