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

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 · Sat Oct 01 00:00:00 EDT 2016 · Advances in High Energy Physics

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

^[1]; ^[2]; Lacey, Roy A. ^[3]

Shanxi Univ., Taiyuan (China). Inst. of Theoretical Physics; Institute ofTheoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, China
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.

View Accepted Manuscript (DOE)

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

Sponsoring Organization:: National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: FG02-87ER40331

OSTI ID:: 1362011

Alternate ID(s):: OSTI ID: 22566412

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

Publisher:: HindawiCopyright Statement

Country of Publication:: United States

Language:: English

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