Long-range rapidity correlations between mean transverse momenta in the model with string fusion

被引：4

作者：

Vechernin, Vladimir ^{[1
]}

机构：

[1] St Petersburg State Univ, St Petersburg, Russia

来源：

19TH INTERNATIONAL SEMINAR ON HIGH ENERGY PHYSICS (QUARKS-2016) | 2016年 / 125卷

关键词：

FORWARD-BACKWARD CORRELATIONS; COLLISIONS; MULTIPLICITIES; DISTRIBUTIONS;

D O I：

10.1051/epjconf/201612504022

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The long-range correlation between mean-event transverse momenta, being robust against the volume fluctuations and the details of the centrality determination, enables to obtain the signatures of string fusion at the initial stage of hadronic interaction in relativistic heavy ion collisions. The dependence of the correlation strength between mean-event transverse momenta on the collision centrality and initial energy is analyzed in a simple model with quark-gluon string fusion on the transverse lattice. It is shown that above RHIC energy the dependence reveals the decline of the correlation coefficient for most central collisions, reflecting the attenuation of color field fluctuations due to the string fusion at large string density. It is also found that contrary to the correlation between transverse momenta of single particles the strength of the correlation between mean-event transverse momenta of particles in two separated rapidity intervals is not decreasing with the total number of produced strings, remaining significant even in the case of Pb-Pb collisions, in which the total number of strings can reach several thousand.

引用

页数：8

共 26 条

[1] ALICE:: Physics Performance Report, Volume II [J].

Alessandro, B. ;

Antinori, F. ;

Belikov, J. A. ;

Blume, C. ;

Dainese, A. ;

Foka, P. ;

Giubellino, P. ;

Hippolyte, B. ;

Kuhn, C. ;

Martinez, G. ;

Monteno, M. ;

Morsch, A. ;

Nayak, T. K. ;

Nystrand, J. ;

Noriega, M. Lopez ;

Paic, G. ;

Pluta, J. ;

Ramello, L. ;

Revol, J-P ;

Safarik, K. ;

Schukraft, J. ;

Schutz, Y. ;

Scomparin, E. ;

Snellings, R. ;

Baillie, O. Villalobos ;

Vercellin, E. ;

Cortese, P. ;

Dellacasa, G. ;

Ramello, L. ;

Sitta, M. ;

Ahmad, N. ;

Ahmad, S. ;

Ahmad, T. ;

Bari, W. ;

Irfan, M. ;

Zafar, M. ;

Botje, M. ;

Kuijer, P. G. ;

Snellings, R. ;

Belogianni, A. ;

Christakoglou, P. ;

Ganoti, P. ;

Petridis, A. ;

Roukoutakis, F. ;

Spyropoulou-Stassinaki, M. ;

Vassiliou, M. ;

Bruno, G. E. ;

Cali, I. A. ;

Caselle, M. ;

De Cataldo, G. .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2006, 32 (10) :1295-2040

[2] LONG AND SHORT-RANGE CORRELATIONS - A SIGNATURE OF STRING FUSION [J].

AMELIN, NS ;

ARMESTO, N ;

BRAUN, MA ;

FERREIRO, EG ;

PAJARES, C .

PHYSICAL REVIEW LETTERS, 1994, 73 (21) :2813-2816

[3] CONVERSION OF COLOR FIELD INTO QQBAR MATTER IN THE CENTRAL REGION OF HIGH-ENERGY HEAVY-ION COLLISIONS [J].

BIALAS, A ;

CZYZ, W .

NUCLEAR PHYSICS B, 1986, 267 (01) :242-252

[4] COLOR ROPE MODEL FOR EXTREME RELATIVISTIC HEAVY-ION COLLISIONS [J].

BIRO, TS ;

NIELSEN, HB ;

KNOLL, J .

NUCLEAR PHYSICS B, 1984, 245 (03) :449-468

[5] A PROBABILISTIC MODEL OF INTERACTING STRINGS [J].

BRAUN, M ;

PAJARES, C .

NUCLEAR PHYSICS B, 1993, 390 (02) :542-558

[6] Ridge from strings [J].

Braun, M. A. ;

Pajares, C. ;

Vechernin, V. V. .

EUROPEAN PHYSICAL JOURNAL A, 2015, 51 (04) :1-11

[7] Anisotropic flows from colour strings: Monte Carlo simulations [J].

Braun, M. A. ;

Pajares, C. ;

Vechernin, V. V. .

NUCLEAR PHYSICS A, 2013, 906 :14-27

[8] Elliptic flow from colour strings [J].

Braun, M. A. ;

Pajares, C. .

EUROPEAN PHYSICAL JOURNAL C, 2011, 71 (02)

[9] Transverse momentum distributions and their forward-backward correlations in the percolating color string approach [J].

Braun, MA ;

Pajares, C .

PHYSICAL REVIEW LETTERS, 2000, 85 (23) :4864-4867

[10] PARTICLE-PRODUCTION IN NUCLEAR COLLISIONS AND STRING INTERACTIONS [J].

BRAUN, MA ;

PAJARES, C .

PHYSICS LETTERS B, 1992, 287 (1-3) :154-158

← 1 2 3 →