Evolution of eccentricities induced by geometrical and quantum fluctuations in proton-nucleus collisions
Abstract
We compute the azimuthal eccentricities arising from initial stage fluctuations in high energy proton-nucleus collisions at proper times τ≥0+. We consider two sources of fluctuations, namely the geometrical structure of the proton and the fluctuation of color fields carried by both proton and nucleus. Describing these effects with Gaussian models allows us to analytically calculate the one- and two-point correlators of energy density, from which the eccentricities are obtained. We compute the proper time evolution of these quantities by approximating the Glasma dynamics in terms of linearized Yang-Mills equations, which we solve by assuming free field propagation and adopting the dilute-dense limit.
Main Authors
Format
Articles
Research article
Published
2023
Series
Subjects
Publication in research information system
Publisher
American Physical Society (APS)
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202306083645Käytä tätä linkitykseen.
Review status
Peer reviewed
ISSN
2470-0010
DOI
https://doi.org/10.1103/PhysRevD.107.094004
Language
English
Published in
Physical Review D
Citation
- Demirci, S., & Guerrero-Rodríguez, P. (2023). Evolution of eccentricities induced by geometrical and quantum fluctuations in proton-nucleus collisions. Physical Review D, 107(9), Article 094004. https://doi.org/10.1103/PhysRevD.107.094004
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Funder(s)
Research Council of Finland
European Commission
European Commission
Funding program(s)
Academy Project, AoF
ERC Advanced Grant
ERC European Research Council, H2020
Akatemiahanke, SA
ERC Advanced Grant
ERC European Research Council, H2020
Additional information about funding
The authors thank Tuomas Lappi for useful discussions. S. D. is supported by the Vilho, Yrjö and Kalle Väisälä Foundation, and the Center of Excellence in Quark Matter of the Academy of Finland, and Project No. 321840. P. G.- R. acknowledges financial support by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme: Grant agreements No. 835105, (YoctoLHC) and No. 681707 (CGCglasmaQGP).
Copyright© Authors 2023. Published by the American Physical Society