Precision Dijet Acoplanarity Tomography of the Chromo Structure of Perfect QCD Fluids
Journal Article
·
· Nuclear Physics. A
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); MTA Wigner Research Center for Physics, Budapest (Hungary); Columbia Univ., New York, NY (United States). Pupin Lab.; Central China Normal University, Wuhan (China)
- MTA Wigner Research Center for Physics, Budapest (Hungary)
- Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter; Central China Normal Univ., Wuhan (China). Institute of Particle Physics
- Indiana Univ., Bloomington, IN (United States). Center for Exploration of Energy and Matter
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Central China Normal University, Wuhan (China)
Dijet acoplanarity is dominated by vacuum (Sudakov) pQCD radiation even in Pb+Pb collisions, but future higher precision measurements of the tails of the acoplanarity distributions can help to resolve separately the medium opacity, χ=L/λ and the color screening scale μ2 from the path averaged BDMS saturation scale Q$$^2_s$$[χ,μ]=∫dL$$\hat{q}$$(E,T(L))∝μ2L/λ that is already well constrained by nuclear modification factor data on RAA(pT). We compare Gaussian (BDMS) and non-Gaussian (GLV) models of medium broadening of vacuum (Sudakov) induced acoplanarity distributions in A+A. With few percent accuracy on the ratio of A+A to p+p distributions, experiments can easily identify non-Gaussian Landau and Rutherford tails due to multiple collisions. However, we find that sub-percent precision will be required to constrain χ and μ separately from Qs.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); National Science Foundation of China (NSFC); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1616079
- Alternate ID(s):
- OSTI ID: 22889119
- Journal Information:
- Nuclear Physics. A, Journal Name: Nuclear Physics. A Journal Issue: C Vol. 982; ISSN 0375-9474
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
| Jet acoplanarity via hadron+jet measurements in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with ALICE | preprint | January 2020 |
Acoplanarity of a Lepton Pair to Probe the Electromagnetic Property of Quark Matter
|
journal | April 2019 |
| Acoplanarity of Lepton Pair to Probe the Electromagnetic Property of Quark Matter | text | January 2018 |
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