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Parton
About: Parton is a research topic. Over the lifetime, 13484 publications have been published within this topic receiving 368877 citations.
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TL;DR: In this article, it is shown how to extend previous work on calculating correlations within a jet to the case of parton collisions, taking into account the complete helicity amplitudes for the scattering of the partons and the possibility of initial-as well as final-state bremsstrahlung.
127 citations
TL;DR: In this paper, the general form of the transverse momentum dependent correlator entering various hard scattering processes is derived and two new time-reversal odd parton distributions appear at the twist-3 level.
126 citations
TL;DR: In this paper, localized energy clusters (jets) with transverse energy between 5 and 13 GeV are observed semi-inclusively in proton-antiproton interactions with √s = 630GeV which also contain a final state proton with more than 90% of the beam proton's momentum.
126 citations
TL;DR: In this paper, the authors study production of two pairs of jets in %hard hadron-hadron collisions in view of extracting contribution of double hard interactions of three and four partons.
Abstract: We study production of two pairs of jets in %hard hadron--hadron collisions in view of extracting contribution of {\em double hard interactions} of three and four partons ($3\to4$, $4\to4$). Such interactions, in spite of being power suppressed at the level of the total cross section, become comparable with the standard hard collisions of two partons, $2\to4$, in the {\em back-to-back kinematics} when the transverse momentum imbalances of two pairing jets are relatively small.
We express differential and total cross sections for two-dijet production in double parton collisions through the generalized two-parton distributions, $_2$GPDs \cite{BDFS1}, that contain large-distance two-parton correlations of non-perturbative origin as well as small-distance correlations due to parton evolution. We find that these large- and small-distance correlations participate in different manner in 4-jet production, and treat them in the leading logarithmic approximation of pQCD that resums collinear logarithms in all orders.
A special emphasis is given to $3\to4$ double hard interaction processes that occur as an interplay between large- and short-distance parton correlations and were not taken into consideration by approaches inspired by the parton model picture. We demonstrate that the $3\to4$ mechanism, being of the same order in $\as$ as the $4\to4$ process, turns out to be {\em geometrically enhanced} compared to the latter and should contribute significantly to 4-jet production.
The framework developed here takes into systematic consideration perturbative $Q^2$ evolution of $_2$GPDs. It can be used as a basis for future analysis of NLO corrections to multi-parton interactions (MPI) at LHC and Tevatron colliders, in particular for improving evaluation of QCD backgrounds to new physics searches.
126 citations
TL;DR: In this article, the neutrino energy range 30-200 GeV was investigated and the results were in agreement with the expectations of the quark parton model and QCD.
Abstract: We present results on charged current inclusive neutrino and antineutrino scattering in the neutrino energy range 30–200 GeV. The results include a) total cross-sections; b)y distributions; c) structure functions; and d) scaling violations observed in the structure functions. The results, as well as their comparison with the results of electron and muon inclusive scattering, are in agreement with the expectations of the quark parton model and QCD.
126 citations