Neutral pion and eta meson production in p-Pb 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_____%2F18%3A00492459" target="_blank" >RIV/61389005:_____/18:00492459 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/18:00492459 RIV/68407700:21340/18:00328507

Result on the web

<a href="http://dx.doi.org/10.1140/epjc/s10052-018-6013-8" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-018-6013-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-018-6013-8" target="_blank" >10.1140/epjc/s10052-018-6013-8</a>

Result language

angličtina

Original language name

Neutral pion and eta meson production in p-Pb collisions at root S-NN=5.02 TeV

Original language description

Neutral pion and eta meson invariant differential yields were measured in non-single diffractive p-Pb collisions at root S-NN = 5.02 TeV with the ALICE experiment at the CERN LHC. The analysis combines results from three complementary photon measurements, utilizing the PHOS and EMCal calorimeters and the Photon Conversion Method. The invariant differential yields of pi(0) and eta meson inclusive production are measured near mid-rapidity in a broad transverse momentum range of 0.3 < p(T) < 20 GeV/c and 0.7 < p(T) < 20 GeV/c, respectively. The measured eta/pi(0) ratio increases with p(T) and saturates for p(T) > 4 GeV/c at 0.483 +/- 0.015(stat) +/- 0.015(sys). A deviation from m(T) scaling is observed for p(T) < 2 GeV/c. The measured eta/pi(0) ratio is consistent with previous measurements from proton-nucleus and pp collisions over the full pi range. The measured eta/pi(0) ratio at high p(T) also agrees within uncertainties with measurements from nucleus nucleus collisions. The pi(0) and eta yields in p-Pb relative to the scaled pp interpolated reference, R-pPb, are presented for 0.3 < p(T) < 20 GeV/c and 0.7 < p(T) < 20 GeV/c, respectively. The results are compared with theoretical model calculations. The values of R-pPb are consistent with unity for transverse momenta above 2 GeV/c. These results support the interpretation that the suppressed yield of neutral mesons measured in Pb-Pb collisions at LHC energies is due to parton energy loss in the hot QCD medium.

Czech name

—

Czech description

—

Type

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

CEP classification

—

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

2018

Confidentiality

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

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

—

Volume of the periodical

78

Issue of the periodical within the volume

8

Country of publishing house

US - UNITED STATES

Number of pages

25

Pages from-to

—

UT code for WoS article

000440762000001

EID of the result in the Scopus database

2-s2.0-85051224642