Double parton scattering at high energies

Abstract

We discuss a few examples of rich newly developing field of double parton scattering. We start our presentation from production of two pairs of charm quark-antiquark and argue that it is the golden reaction to study the double parton scattering effects. In addition to the DPS we consider briefly also mechanism of single parton scattering and show that it gives much smaller contribution to the $c\bar{c}c\bar{c}$ final state. Next we discuss a perturbative parton-splitting mechanism which should be included in addition to the conventional DPS mechanism. We show that the presence of this mechanism unavoidably leads to collision energy and other kinematical variables dependence of so-called ${\sigma }_{eff}$ parameter being extracted from different experiments. Next we briefly discuss production of four jets. We concentrate on estimation of the contribution of DPS for jets remote in rapidity. Understanding of this contribution is very important in the context of searches for BFKL effects known under the the name Mueller-Navelet jets. We discuss the situation in a more general context. Finally we briefly mention about DPS effects in production of $W^{+}{W}^{-}$. Outlook closes the presentation.

23 pages, 21 figures, 1 table, a short review talk at EPHIPHANY2015, conference on Future High Energy Colliders

References in corpus (5)

• Second order QCD corrections to jet production at hadron colliders: the all-gluon contribution
• Azimuthal decorrelation of Mueller-Navelet jets at the Tevatron and the LHC
• Jet-jet and hadron-jet correlations in hadro- and electro-production
• Searching for and exploring double-parton scattering effects in four-jet production at the LHC
• Evaluations of Derivatives of Jacobi Theta Functions in the origin

Cited by in corpus (5)

• Measurement of the prompt $J/\psi$ pair production cross-section in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Correlations in Double Parton Distributions: Perturbative and Non-Perturbative effects
• Tetraquark Production in Double Parton Scattering
• Double parton scattering: a study of the effective cross section within a Light-Front quark model
• A short review of some double-parton scattering processes