scholarly journals Angular correlations and high energy evolution

2011 ◽  
Vol 84 (9) ◽  
Author(s):  
Alex Kovner ◽  
Michael Lublinsky
Keyword(s):  
High Energy ◽  
Energy Evolution ◽  
Angular Correlations

scholarly journals RENORMALIZATION GROUP EVOLUTION OF MULTI-GLUON CORRELATORS IN HIGH ENERGY QCD

2012 ◽  
Vol 20 ◽  
pp. 214-221
Author(s):  
JAMAL JALILIAN-MARIAN
Keyword(s):  
Particle Production ◽  
High Energy ◽  
Forward Rapidity ◽  
Proton Proton ◽  
Proton Collisions ◽  
Angular Correlations ◽  
Energy Proton ◽  
Group Evolution ◽  
Proton Proton Collisions ◽  
Made In

Forward rapidity di-hadron azimuthal angular correlations in high energy proton-nucleus and proton-proton collisions are sensitive to quadrupoles; traceless correlator of 4 Wilson lines whereas single inclusive particle production iNVOLVES only dipoles, traceless correlator of 2 Wilson lines. We discuss the progress made in understanding the energy (rapidity) evolution of the quadrupole as well as its various limits.

scholarly journals More remarks on high energy evolution

2006 ◽  
Vol 767 ◽  
pp. 171-188 ◽  
Author(s):  
A. Kovner ◽  
M. Lublinsky
Keyword(s):  
High Energy ◽  
Energy Evolution

Smallx EVOLUTION OF MULTI-POINT CORRELATORS OF WILSON LINES

2011 ◽  
Vol 04 ◽  
pp. 20-25
Author(s):  
JAMAL JALILIAN-MARIAN
Keyword(s):  
Evolution Equation ◽  
Evolution Equations ◽  
Scattering Amplitude ◽  
High Energy ◽  
Point Function ◽  
Forward Scattering Amplitude ◽  
Angular Correlations ◽  
Small X ◽  
Dipole Scattering ◽  
Inclusive Processes

At high energy (small x) n-point coorelators of Wilson lines appear in calculation of physical observables. The energy dependence of these observables is determined by the solution of the evolution equations these correlators satisfy. The most common correlator is the two-point function, the imaginary part of the forward scattering amplitude of a quark anti-quark dipole scattering on a target. This appears in structure functions in DIS as well as single inclusive hadron production in proton-nucleus collisions. Higher point correlators of Wilson lines appear in less inclusive processes, such as two-hadron angular and rapidity correlations and satisfy the Balitski-JIMWLK evolution equation. Here we derive the evolution equation satisfied by the six point correlator of Wilson lines which appears in di-hadron angular correlations in proton-nucleus collisions at high energy.

scholarly journals A Langevin equation for high-energy evolution with pomeron loops

2005 ◽  
Vol 756 (3-4) ◽  
pp. 419-467 ◽  
Author(s):  
E. Iancu ◽  
D.N. Triantafyllopoulos
Keyword(s):  
Langevin Equation ◽  
High Energy ◽  
Energy Evolution

Correlation study in high energy interaction of muon with Ag and Br nuclei

2018 ◽  
Vol 27 (09) ◽  
pp. 1850077
Author(s):  
M. T. Hussein ◽  
M. T. Ghoneim ◽  
S. M. Othman
Keyword(s):  
Cross Sections ◽  
Particle Production ◽  
Production Cross ◽  
High Energy ◽  
Correlation Study ◽  
Alpha Particles ◽  
Angular Correlations ◽  
Energy Interaction ◽  
Range Correlation ◽  
Total Particle

In this work, we present the study of emissions of light fragments produced in interactions of 160 GeV muons with emulsion nuclei. A total of 820 interactions with emulsion nuclei were collected. Thickness, coordinate and range of each track were measured. Charges of emitted fragments were identified and the corresponding energies were calculated. Multiplicity, total particle production cross-sections and angular distribution of particles (P, He, Li, Be and B) were presented. Forward–backward–angular correlations were measured for the emitted alpha particles. Short and long range correlation among pairs of Alfa particles were observed at specific angular intervals. The experimental data and the results of the angular correlation were used to find the probable mechanism of producing alpha particles and to reveal the dynamic characteristics of the reactions.

scholarly journals Forward particle production in proton-nucleus collisions at next-to-leading order

2018 ◽  
Vol 192 ◽  
pp. 00014
Author(s):  
D.N. Triantafyllopoulos
Keyword(s):  
Cross Section ◽  
Particle Production ◽  
Eikonal Approximation ◽  
High Energy ◽  
Fine Tuning ◽  
Color Glass ◽  
Leading Order ◽  
Energy Evolution ◽  
The Impact ◽  
Correct Size

We consider the next-to-leading order (NLO) calculation of single inclusive particle production at forward rapidities in proton-nucleus collisions and in the framework of the Color Glass Condensate (CGC). We focus on the quark channel and the corrections associated with the impact factor. In the first step of the evolution the kinematics of the emitted gluon is kept exactly (and not in the eikonal approximation), but such a treatment which includes NLO corrections is not explicitly separated from the high energy evolution. Thus, in this newly established “factorization scheme”, there is no “rapidity subtraction”. The latter suffers from fine tuning issues and eventually leads to an unphysical (negative) cross section. On the contrary, our reorganization of the perturbation theory leads by definition to a well-defined cross section and the numerical evaluation of the NLO correction is shown to have the correct size.

scholarly journals Eikonal but not: A complementary view of high energy evolution

2008 ◽  
Vol 659 (1-2) ◽  
pp. 144-148 ◽  
Author(s):  
Tolga Altinoluk ◽  
Alex Kovner ◽  
Javier Peressutti
Keyword(s):  
High Energy ◽  
Energy Evolution
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