Angular correlations in pA collisions from CGC: multiplicity and mean transverse momentum dependence of $$$$v_2$$$$

Journal Article · 05 July 2021 · European Physical Journal. C, Particles and Fields

DOI: https://doi.org/10.1140/epjc/s10052-021-09373-5 · OSTI ID:1805292

Altinoluk, Tolga; Armesto, Néstor; Kovner, Alex; Lublinsky, Michael; Skokov, Vladimir V.

Abstract Within the dense-dilute Color Glass Condensate approach, and using the Golec–Biernat–Wuesthoff model for the dipole scattering amplitude, we calculate $$$$v_2^2$$$$ $v_2^2$ as well as the correlations between $$$$v_2^2$$$$ $v_2^2$ and both the total multiplicity and the mean transverse momentum of produced particles. We find that the correlations are generally very small consistent with the observations. We note an interesting sharp change in the value of $$$$v^2_2$$$$ $v_2^2$ as well as of its correlations as a function of the width of the transverse momentum bin. This crossover is associated with the change from Bose enhancement dominance of the correlation for narrow bin to HBT dominated correlations for larger bin width.

• Research Organization: North Carolina State Univ., Raleigh, NC (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: SC0020081
• OSTI ID: 1805292
• Journal Information: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 7 Vol. 81; ISSN 1434-6044
• Publisher: Springer Science + Business MediaCopyright Statement
• Country of Publication: Germany
• Language: English