Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at root s(NN)=5.02 TeV

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F20%3A00524518" target="_blank" >RIV/61389005:_____/20:00524518 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/20:00524518 RIV/68407700:21340/20:00342806

Result on the web

<a href="https://doi.org/10.1103/PhysRevC.101.044907" target="_blank" >https://doi.org/10.1103/PhysRevC.101.044907</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.101.044907" target="_blank" >10.1103/PhysRevC.101.044907</a>

Result language

angličtina

Original language name

Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at root s(NN)=5.02 TeV

Original language description

Midrapidity production of pi(+/-), K-+/-, and (<(p))over bar>p measured by the ALICE experiment at the CERN Large Hadron Collider, in Pb-Pb and inelastic pp collisions at root s(NN) = 5.02 TeV, is presented. The invariant yields are measured over a wide transverse momentum (p(T)) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a function of the collision centrality, in the range 0-90%. The comparison of the P-T -integrated particle ratios, i.e., proton-to-pion (p/pi) and kaon-to-pion (K/pi) ratios, with similar measurements in Pb-Pb collisions at root s(NN) = 2.76 TeV show no significant energy dependence. Blast-wave fits of the p(T) spectra indicate that in the most central collisions radial flow is slightly larger at 5.02 TeV with respect to 2.76 TeV. Particle ratios (p/pi, K/pi) as a function of p(T) show pronounced maxima at p(T) approximate to 3 GeV/c in central Pb-Pb collisions. At high p(T) , particle ratios at 5.02 TeV are similar to those measured in pp collisions at the same energy and in Pb-Pb collisions at root sNN = 2.76 TeV. Using the pp reference spectra measured at the same collision energy of 5.02 TeV, the nuclear modification factors for the different particle species are derived. Within uncertainties, the nuclear modification factor is particle species independent for high p(T) and compatible with measurements at root sNN = 2.76 TeV. The results are compared to state-of-the-art model calculations, which are found to describe the observed trends satisfactorily.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10304 - Nuclear physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review C

ISSN

2469-9985

e-ISSN

—

Volume of the periodical

101

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

27

Pages from-to

044907

UT code for WoS article

000529308100001

EID of the result in the Scopus database

2-s2.0-85091926671