We compare the distortion effects of three popular final-state hadronization schemes. We show how hadronization modifies the initial-state gluon correlations in high energy p + A collisions. The three models considered are (1) LPH: local parton-hadron duality, (2) CPR: collinear parton-hadron resonance independent fragmentation, and (3) LUND: color string hadronization. The strong initial-state azimuthal asymmetries are generated using the GLVB model for non-abelian gluon bremsstrahlung, assuming a saturation scale Q(sat) = 2 GeV. Long-range elliptic and triangular harmonics for the final hadron pairs are compared based on the three hadronization schemes. Our analysis shows that the process of hadronization causes major distortions of the partonic azimuthal harmonics for transverse momenta at least up to Pr = 3 GeV. In particular, they appear to be greatly reduced for pr < 1 divided by 2 GeV. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
Hadronization scheme dependence of long-range azimuthal harmonics in high energy p plus A reactions / Esposito, A; Gyulassy, M. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 747:(2015), pp. 433-440. [10.1016/j.physletb.2015.06.037]
Hadronization scheme dependence of long-range azimuthal harmonics in high energy p plus A reactions
Esposito A;
2015
Abstract
We compare the distortion effects of three popular final-state hadronization schemes. We show how hadronization modifies the initial-state gluon correlations in high energy p + A collisions. The three models considered are (1) LPH: local parton-hadron duality, (2) CPR: collinear parton-hadron resonance independent fragmentation, and (3) LUND: color string hadronization. The strong initial-state azimuthal asymmetries are generated using the GLVB model for non-abelian gluon bremsstrahlung, assuming a saturation scale Q(sat) = 2 GeV. Long-range elliptic and triangular harmonics for the final hadron pairs are compared based on the three hadronization schemes. Our analysis shows that the process of hadronization causes major distortions of the partonic azimuthal harmonics for transverse momenta at least up to Pr = 3 GeV. In particular, they appear to be greatly reduced for pr < 1 divided by 2 GeV. (C) 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY licenseI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
