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Title: PHENIX measurements of open and hidden heavy flavor in p+p , p+Al, and p/d/ 3 He+Au collisions across a wide range of rapidity

Abstract

Despite intense theoretical and experimental investigation, the physical mechanisms governing the suppression of bound quark-antiquark states in nuclear collisions are not yet fully understood. While color screening in a plasma phase is expected to play a role, there are numerous other possible suppression mechanisms that do not require deconfinement, as well as effects on the heavy quark initial state in the nucleus which can also play a role. To study these effects, the PHENIX collaboration has used the flexibility of the RHIC accelerator complex to observe the evolution of open heavy flavor and quarkonia dynamics as both the projectile and target nuclei size are varied. Open heavy flavor in small collision systems can serve as the baseline for interpreting quarkonia production in the nuclear environment, and comparisons of the ψ(2S) with the ψ(1S) show that in rapidity regions with relatively high hadron density, the larger 2S state is preferentially more suppressed than the more tightly bound ψ(1S). This suggests that late-stage mechanisms may be at least partially responsible for quarkonia suppression in nuclear collisions. In this talk, we will present results on excited-state quarkonia in p+p, p+Al, and p/d/ 3He+Au collisions and open heavy flavor in small systems, and discussmore » how these measurements impact our understanding of heavy quark behavior in the quark-gluon plasma.« less

Authors:
ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); et al.
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Nuclear Physics (NP) (SC-26)
Contributing Org.:
[PHENIX Collaboration]
OSTI Identifier:
1530794
Report Number(s):
[LA-UR-18-26113]
[Journal ID: ISSN 0375-9474]
Grant/Contract Number:  
[89233218CNA000001]
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Physics. A
Additional Journal Information:
[ Journal Volume: 967; Journal Issue: C; Conference: The 26th International Conference on Ultra-relativistic Nucleus-Nucleus Collisions: Quark Matter 2017 (Quark Matter 2017) ; 2017-02-05 - 2017-02-11 ; Chicago, Illinois, United States]; Journal ID: ISSN 0375-9474
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Atomic; Nuclear and Particle Physics; high-energy nuclear physics

Citation Formats

Da Silva, Cesar Luis. PHENIX measurements of open and hidden heavy flavor in p+p , p+Al, and p/d/3 He+Au collisions across a wide range of rapidity. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysa.2017.04.024.
Da Silva, Cesar Luis. PHENIX measurements of open and hidden heavy flavor in p+p , p+Al, and p/d/3 He+Au collisions across a wide range of rapidity. United States. doi:10.1016/j.nuclphysa.2017.04.024.
Da Silva, Cesar Luis. Mon . "PHENIX measurements of open and hidden heavy flavor in p+p , p+Al, and p/d/3 He+Au collisions across a wide range of rapidity". United States. doi:10.1016/j.nuclphysa.2017.04.024. https://www.osti.gov/servlets/purl/1530794.
@article{osti_1530794,
title = {PHENIX measurements of open and hidden heavy flavor in p+p , p+Al, and p/d/3 He+Au collisions across a wide range of rapidity},
author = {Da Silva, Cesar Luis},
abstractNote = {Despite intense theoretical and experimental investigation, the physical mechanisms governing the suppression of bound quark-antiquark states in nuclear collisions are not yet fully understood. While color screening in a plasma phase is expected to play a role, there are numerous other possible suppression mechanisms that do not require deconfinement, as well as effects on the heavy quark initial state in the nucleus which can also play a role. To study these effects, the PHENIX collaboration has used the flexibility of the RHIC accelerator complex to observe the evolution of open heavy flavor and quarkonia dynamics as both the projectile and target nuclei size are varied. Open heavy flavor in small collision systems can serve as the baseline for interpreting quarkonia production in the nuclear environment, and comparisons of the ψ(2S) with the ψ(1S) show that in rapidity regions with relatively high hadron density, the larger 2S state is preferentially more suppressed than the more tightly bound ψ(1S). This suggests that late-stage mechanisms may be at least partially responsible for quarkonia suppression in nuclear collisions. In this talk, we will present results on excited-state quarkonia in p+p, p+Al, and p/d/3He+Au collisions and open heavy flavor in small systems, and discuss how these measurements impact our understanding of heavy quark behavior in the quark-gluon plasma.},
doi = {10.1016/j.nuclphysa.2017.04.024},
journal = {Nuclear Physics. A},
number = [C],
volume = [967],
place = {United States},
year = {2017},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Figure 1 Figure 1: Dimuon mass spectra and fits from p+p, p+Al, p+Au, and 3He+Au collisions at $\sqrt{^SNN}$ = 200 GeV.

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.