Differential two-particle number and momentum correlations with the AMPT, UrQMD, and EPOS models in Pb-Pb collisions at √sNN= 2.76 TeV
(2021) In Physical Review C 104.- Abstract
- We report studies of charge-independent (CI) and charge-dependent (CD)two-particle differential number correlation functions, R2 (Δη,Δ℘), and transverse momentum correlation functions, P2 (Δη,Δ℘) of charged particles produced in Pb-Pb collisions at the LHC centre-of-mass energy √sNN= 2.76 TeV with the UrQMD, AMPT and EPOS models. Model predictions for R2 and P2 correlation functions are presented for inclusive charged hadrons (h±) in selected transverse momentum ranges and with full azimuthal coverage in the pseudorapidity range |η|<1.0. We compare these predictions for the strength, shape, and particularly the width of the... (More)
- We report studies of charge-independent (CI) and charge-dependent (CD)two-particle differential number correlation functions, R2 (Δη,Δ℘), and transverse momentum correlation functions, P2 (Δη,Δ℘) of charged particles produced in Pb-Pb collisions at the LHC centre-of-mass energy √sNN= 2.76 TeV with the UrQMD, AMPT and EPOS models. Model predictions for R2 and P2 correlation functions are presented for inclusive charged hadrons (h±) in selected transverse momentum ranges and with full azimuthal coverage in the pseudorapidity range |η|<1.0. We compare these predictions for the strength, shape, and particularly the width of the correlation functions with recent measurements of these observables by the ALICE collaboration. Our analysis indicate that comparative studies of R2 and P2 correlation functions provide valuable insight towards the understanding of particle production in Pb-Pb collisions. We find, in particular, that these models have quantitatively different predictions for these three observables but none reproduce the measured correlation functions reported by the ALICE collaboration. Accounting for quantum number conservation in models, particularly charge conservation, is mandatory to reproduce the detailed measurements of number and transverse momentum correlation function. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/065968bf-7fdb-49d3-90b5-43b647a80f1b
- author
- Basu, Sumit LU ; Gonzalez, Victor ; Pan, Jinjin ; Knospe, Anders ; Marin, Ana ; Markert, Christina and Pruneau, Claude
- organization
- publishing date
- 2021-12-08
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C
- volume
- 104
- article number
- 064902
- pages
- 14 pages
- publisher
- American Physical Society
- external identifiers
-
- scopus:85121149966
- ISSN
- 2469-9985
- DOI
- 10.1103/PhysRevC.104.064902
- language
- English
- LU publication?
- yes
- id
- 065968bf-7fdb-49d3-90b5-43b647a80f1b
- alternative location
- https://arxiv.org/pdf/2001.07167.pdf
- date added to LUP
- 2021-04-12 16:03:47
- date last changed
- 2023-04-02 20:59:09
@article{065968bf-7fdb-49d3-90b5-43b647a80f1b, abstract = {{We report studies of charge-independent (CI) and charge-dependent (CD)two-particle differential number correlation functions, <i>R</i><sub>2</sub> (Δη,Δ℘), and transverse momentum correlation functions, <i>P</i><sub>2</sub> (Δη,Δ℘) of charged particles produced in Pb-Pb collisions at the LHC centre-of-mass energy <sub>√</sub><i>s</i><sub>NN</sub>= 2.76 TeV with the UrQMD, AMPT and EPOS models. Model predictions for <i>R</i><sub>2</sub> and <i>P</i><sub>2</sub> correlation functions are presented for inclusive charged hadrons (<i>h</i>±) in selected transverse momentum ranges and with full azimuthal coverage in the pseudorapidity range |<i>η</i>|<1.0. We compare these predictions for the strength, shape, and particularly the width of the correlation functions with recent measurements of these observables by the ALICE collaboration. Our analysis indicate that comparative studies of <i>R</i><sub>2</sub> and <i>P</i><sub>2</sub> correlation functions provide valuable insight towards the understanding of particle production in Pb-Pb collisions. We find, in particular, that these models have quantitatively different predictions for these three observables but none reproduce the measured correlation functions reported by the ALICE collaboration. Accounting for quantum number conservation in models, particularly charge conservation, is mandatory to reproduce the detailed measurements of number and transverse momentum correlation function.}}, author = {{Basu, Sumit and Gonzalez, Victor and Pan, Jinjin and Knospe, Anders and Marin, Ana and Markert, Christina and Pruneau, Claude}}, issn = {{2469-9985}}, language = {{eng}}, month = {{12}}, publisher = {{American Physical Society}}, series = {{Physical Review C}}, title = {{Differential two-particle number and momentum correlations with the AMPT, UrQMD, and EPOS models in Pb-Pb collisions at √<i>s</i><sub>NN</sub>= 2.76 TeV}}, url = {{http://dx.doi.org/10.1103/PhysRevC.104.064902}}, doi = {{10.1103/PhysRevC.104.064902}}, volume = {{104}}, year = {{2021}}, }