pi(0) and eta meson production in proton-proton collisions at root s=8 TeV
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F18%3A00489032" target="_blank" >RIV/61389005:_____/18:00489032 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/68378271:_____/18:00489032 RIV/68407700:21340/18:00328325
Výsledek na webu
<a href="http://dx.doi.org/10.1140/epjc/s10052-018-5612-8" target="_blank" >http://dx.doi.org/10.1140/epjc/s10052-018-5612-8</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-018-5612-8" target="_blank" >10.1140/epjc/s10052-018-5612-8</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
pi(0) and eta meson production in proton-proton collisions at root s=8 TeV
Popis výsledku v původním jazyce
An invariant differential cross section measurement of inclusive pi(0) and eta meson production atmid-rapidity in pp collisions at root s = 8 TeV was carried out by the ALICE experiment at the LHC. The spectra of pi(0) and eta mesons were measured in transverse momentum ranges of 0.3 < p(T) < 35 GeV/c and 0.5 < p(T) < 35 GeV/c, respectively. Next-to-leading order perturbative QCD calculations using fragmentation functions DSS14 for the pi(0) and AESSS for the. overestimate the cross sections of both neutral mesons, although such calculations agree with the measured eta/pi(0) ratio within uncertainties. The results were also compared with PYTHIA 8.2 predictions for which the Monash 2013 tune yields the best agreement with the measured neutral meson spectra. The measurements confirm a universal behavior of the eta/pi(0) ratio seen forNA27, PHENIX and ALICE data for pp collisions from root s = 27.5 GeV to root s = 8 TeV within experimental uncertainties. A relation between the pi(0) and eta production cross sections for pp collisions at root s = 8 TeV is given by m(T) scaling for p(T) > 3.5 GeV/c. However, a deviation from this empirical scaling rule is observed for transverse momenta below p(T) < 3.5 GeV/c in the eta/pi(0) ratio with a significance of 6.2 sigma.
Název v anglickém jazyce
pi(0) and eta meson production in proton-proton collisions at root s=8 TeV
Popis výsledku anglicky
An invariant differential cross section measurement of inclusive pi(0) and eta meson production atmid-rapidity in pp collisions at root s = 8 TeV was carried out by the ALICE experiment at the LHC. The spectra of pi(0) and eta mesons were measured in transverse momentum ranges of 0.3 < p(T) < 35 GeV/c and 0.5 < p(T) < 35 GeV/c, respectively. Next-to-leading order perturbative QCD calculations using fragmentation functions DSS14 for the pi(0) and AESSS for the. overestimate the cross sections of both neutral mesons, although such calculations agree with the measured eta/pi(0) ratio within uncertainties. The results were also compared with PYTHIA 8.2 predictions for which the Monash 2013 tune yields the best agreement with the measured neutral meson spectra. The measurements confirm a universal behavior of the eta/pi(0) ratio seen forNA27, PHENIX and ALICE data for pp collisions from root s = 27.5 GeV to root s = 8 TeV within experimental uncertainties. A relation between the pi(0) and eta production cross sections for pp collisions at root s = 8 TeV is given by m(T) scaling for p(T) > 3.5 GeV/c. However, a deviation from this empirical scaling rule is observed for transverse momenta below p(T) < 3.5 GeV/c in the eta/pi(0) ratio with a significance of 6.2 sigma.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10304 - Nuclear physics
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
European Physical Journal C
ISSN
1434-6044
e-ISSN
—
Svazek periodika
78
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
26
Strana od-do
—
Kód UT WoS článku
000428848200002
EID výsledku v databázi Scopus
2-s2.0-85044517372