Results 21 to 30 of about 58,635 (189)
Nuclear Physics B, 2017 We use the spinor helicity formalism to calculate the cross section for production of three partons of a given polarization in Deep Inelastic Scattering (DIS) off proton and nucleus targets at small Bjorken x. The target proton or nucleus is treated as a
Alejandro Ayala +3 more
doaj +1 more source
Generalized Parton Distributions [PDF]
26th Annual Hampton University Graduate Studies Program, Jefferson Lab, May 30, 2011, 2000 Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of the usual parton distributions for the case when long-distance information is accumulated in nondiagonal matrix elements of quark and gluon light-cone operators.
openaire +4 more sources
Physical Review B, 2017 Fracton topological phases host fractionalized excitations that are either completely immobile or only mobile along certain lines or planes. We demonstrate how such phases can be understood in terms of two fundamentally different types of parton constructions, in which physical degrees of freedom are decomposed into clusters of "parton" degrees of ...
Hsieh, Timothy H., Halász, Gábor B.
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Triple (and quadruple) soft-gluon radiation in QCD hard scattering
Journal of High Energy Physics, 2020 We consider the radiation of three soft gluons in a generic process for multi- parton hard scattering in QCD. In the soft limit the corresponding scattering amplitude has a singular behaviour that is factorized and controlled by a colorful soft current ...
Stefano Catani +2 more
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Tree-level splitting amplitudes for a gluon into four collinear partons
Journal of High Energy Physics, 2020 We compute in conventional dimensional regularisation the tree-level splitting amplitudes for a gluon parent which splits into four collinear partons. This is part of the universal infrared behaviour of the QCD scattering amplitudes at next-to-next-to ...
Vittorio Del Duca +4 more
doaj +1 more source
Physical Review D, 2016 We report on the possibility of reweighting parton-shower Monte Carlo predictions for scale variations in the parton-shower algorithm. The method is based on a generalization of the Sudakov veto algorithm. We demonstrate the feasibility of this approach using example physical distributions.
Bellm, Johannes +4 more
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Polarized 3 parton production in inclusive DIS at small x
Physics Letters B, 2016 Azimuthal angular correlations between produced hadrons/jets in high energy collisions are a sensitive probe of the dynamics of QCD at small x. Here we derive the triple differential cross section for inclusive production of 3 polarized partons in DIS at
Alejandro Ayala +3 more
doaj +1 more source
Statistical model for pionic partons [PDF]
, 2001 We present a model for the structure of the pion. Based on ideas of a recently developed statistical model of the nucleon, we assume the pion to be a gas of partons. The finite-size corrections (FSC) are incorporated through two parameters.
Altarelli +18 more
core +4 more sources
3 parton production at DIS at small x
EPJ Web of Conferences, 2018 We use the spinor helicity formalism to calculate the cross section for production of three partons of a given polarization in Deep Inelastic Scattering (DIS) off proton and nucleus targets at small Bjorken x. The target proton or nucleus is treated as a
Hentschinski Martin
doaj +1 more source
Lorentz and CPT violation in partons
Journal of High Energy Physics, 2020 A framework is presented for the factorization of high-energy hadronic processes in the presence of Lorentz and CPT violation. The comprehensive effective field theory describing Lorentz and CPT violation, the Standard-Model Extension, is used to ...
V. Alan Kostelecký +3 more
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