Event Patterns Extracted from Transverse Momentum and Rapidity Spectra of Z Bosons and Quarkonium States Produced in pp and Pb-Pb Collisions at LHC

Chen, Ya-Hui; Liu, Fu-Hu; Lacey, Roy A.

doi:10.1155/2016/9876253

Title: Event Patterns Extracted from Transverse Momentum and Rapidity Spectra of $Z$ Bosons and Quarkonium States Produced in pp and Pb-Pb Collisions at LHC

Journal Article · 01 October 2016 · Advances in High Energy Physics

DOI: https://doi.org/10.1155/2016/9876253 · OSTI ID:1362011

^[1];

^[1]; Lacey, Roy A. ^[2]

Shanxi Univ., Taiyuan (China). Inst. of Theoretical Physics
Stony Brook Univ., NY (United States). Dept. of Chemistry. Dept. of Physics

Transverse momentum ( $p_{T}$ ) and rapidity ( $y$ ) spectra of $Z$ bosons and quarkonium states (some charmonium $c \bar{c}$ mesons such as $J / ψ$ and $ψ (2 S)$ and some bottomonium $b \bar{b}$ mesons such as $Υ (1 S)$ , $Υ (2 S)$ , and $Υ (3 S)$ ) produced in proton-proton (pp) and lead-lead (Pb-Pb) collisions at the large hadron collider (LHC) are uniformly described by a hybrid model of two-component Erlang distribution for $p_{T}$ spectrum and two-component Gaussian distribution for $y$ spectrum. The former distribution results from a multisource thermal model, and the latter one results from the revised Landau hydrodynamic model. The modelling results are in agreement with the experimental data measured in pp collisions at center-of-mass energies $\sqrt{s} = 2.76$ and 7 TeV and in Pb-Pb collisions at center-of-mass energy per nucleon pair $\sqrt{s_{N N}} = 2.76$ TeV. Based on the parameter values extracted from $p_{T}$ and $y$ spectra, the event patterns (particle scatter plots) in two-dimensional $p_{T}$ - $y$ space and in three-dimensional velocity space are obtained.

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Research Organization:: Stony Brook Univ., NY (United States); Shanxi Univ., Taiyuan (China)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); National Natural Science Foundation of China (NSFC)

Grant/Contract Number:: FG02-87ER40331; 11575103

OSTI ID:: 1362011

Journal Information:: Advances in High Energy Physics, Vol. 2016; ISSN 1687-7357

Publisher:: HindawiCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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