scholarly journals Probing gluon saturation through dihadron correlations at an electron-ion collider

2014 ◽  
Vol 89 (7) ◽  
Author(s):  
L. Zheng ◽  
E. C. Aschenauer ◽  
J. H. Lee ◽  
Bo-Wen Xiao
Keyword(s):  
Dihadron Correlations ◽  
Gluon Saturation

scholarly journals Probing Gluon Saturation through Dihadron Correlations at an Electron-Ion Collider

2014 ◽  
Author(s):  
J. H. Lee ◽  
Liang Zheng ◽  
Elke-Caroline Aschenauer ◽  
Bo-Wen Xiao
Keyword(s):  
Dihadron Correlations ◽  
Gluon Saturation

scholarly journals Saturation effects in SIDIS at very forward rapidities

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
E. Iancu ◽  
A. H. Mueller ◽  
D. N. Triantafyllopoulos ◽  
S. Y. Wei
Keyword(s):  
Inelastic Scattering ◽  
Cross Section ◽  
Cross Sections ◽  
Virtual Photon ◽  
Large Fraction ◽  
Quark Distribution ◽  
High Energy ◽  
Longitudinal Momentum ◽  
Black Disk ◽  
Gluon Saturation

Abstract Using the dipole picture for electron-nucleus deep inelastic scattering at small Bjorken x, we study the effects of gluon saturation in the nuclear target on the cross-section for SIDIS (single inclusive hadron, or jet, production). We argue that the sensitivity of this process to gluon saturation can be enhanced by tagging on a hadron (or jet) which carries a large fraction z ≃ 1 of the longitudinal momentum of the virtual photon. This opens the possibility to study gluon saturation in relatively hard processes, where the virtuality Q2 is (much) larger than the target saturation momentum $$ {Q}_s^2 $$ Q s 2 , but such that z(1 − z)Q2 ≲ $$ {Q}_s^2 $$ Q s 2 . Working in the limit z(1 − z)Q2 ≪ $$ {Q}_s^2 $$ Q s 2 , we predict new phenomena which would signal saturation in the SIDIS cross-section. For sufficiently low transverse momenta k⊥ ≪ Qs of the produced particle, the dominant contribution comes from elastic scattering in the black disk limit, which exposes the unintegrated quark distribution in the virtual photon. For larger momenta k⊥ ≳ Qs, inelastic collisions take the leading role. They explore gluon saturation via multiple scattering, leading to a Gaussian distribution in k⊥ centred around Qs. When z(1 − z)Q2 ≪ Q2, this results in a Cronin peak in the nuclear modification factor (the RpA ratio) at moderate values of x. With decreasing x, this peak is washed out by the high-energy evolution and replaced by nuclear suppression (RpA< 1) up to large momenta k⊥ ≫ Qs. Still for z(1 − z)Q2 ≪ $$ {Q}_s^2 $$ Q s 2 , we also compute SIDIS cross-sections integrated over k⊥. We find that both elastic and inelastic scattering are controlled by the black disk limit, so they yield similar contributions, of zeroth order in the QCD coupling.

scholarly journals Polarized hyperons from pA scattering in the gluon saturation regime

2003 ◽  
Vol 556 (1-2) ◽  
pp. 33-40 ◽  
Author(s):  
Daniël Boer ◽  
Adrian Dumitru
Keyword(s):  
Saturation Regime ◽  
Gluon Saturation

scholarly journals Gluon saturation: Survival probability for leading neutrons in DIS

2012 ◽  
Vol 892 ◽  
pp. 1-20 ◽  
Author(s):  
Eugene Levin ◽  
Sebastian Tapia
Keyword(s):  
Survival Probability ◽  
Gluon Saturation

scholarly journals Taming the BFKL intercept via gluon saturation

2003 ◽  
Vol 715 ◽  
pp. 871c-874c ◽  
Author(s):  
Alexander Kovner ◽  
Urs Achim Wiedemann
Keyword(s):  
Gluon Saturation
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