Spinor helicity methods in high-energy factorization: efficient momentum-space calculations in the Color Glass Condensate formalism

Abstract

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 classical color field (shock wave) from which the produced partons scatter multiple times. We reported our result for the final expression for the production cross section and studied the azimuthal angular correlations of the produced partons in [1]. Here we provide the full details of the calculation of the production cross section using the spinor helicity methods.

26 pages, 24 figures

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Cited by in corpus (12)

• Deep inelastic scattering in the dipole picture at next-to-leading order
• QCD evolution based evidence for the onset of gluon saturation in exclusive photo-production of vector mesons
• NLO impact factor for inclusive photon$+$dijet production in $e+A$ DIS at small $x$
• Rapidity loss, spin and angular asymmetries in scattering of a quark from color field of a proton (nucleus)
• One-Loop Corrections to Dihadron Production in DIS at Small $x$
• Single Inclusive Hadron Production in DIS at Small $x$: Next to Leading Order Corrections
• Dihadron production in DIS at NLO: the real corrections
• Dihadron Production in DIS at Small $x$ at Next to Leading Order: Transverse Photons
• The Color Glass Condensate formalism, Balitsky-JIMWLK evolution and Lipatov's high energy effective action
• Dijet impact factor in DIS at next-to-leading order in the Color Glass Condensate
• Photoproduction of ${\eta }_c\gamma$ pairs in CGC framework
• Coherent energy loss effects in dihadron azimuthal angular correlations in Deep Inelastic Scattering at small $x$