Systematic study of nuclear effects in p plus Al, p plus Au, d + Au, and He-3 + Au collisions at root S-NN=200 GeV using pi(0) production
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10445581" target="_blank" >RIV/00216208:11320/22:10445581 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/22:00361152
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=y5SyoSoXFM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=y5SyoSoXFM</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.105.064902" target="_blank" >10.1103/PhysRevC.105.064902</a>
Alternative languages
Result language
angličtina
Original language name
Systematic study of nuclear effects in p plus Al, p plus Au, d + Au, and He-3 + Au collisions at root S-NN=200 GeV using pi(0) production
Original language description
The PHENIX Collaboration presents a systematic study of inclusive pi(0) production from p + p, p + Al, p + Au, d + Au, and He-3 + Au collisions at root S-NN = 200 GeV. Measurements were performed with different centrality selections as well as the total inelastic, 0-100%, selection for all collision systems. For 0-100% collisions, the nuclear-modification factors, R-xA, are consistent with unity for P-T above 8 GeV/c, but exhibit an enhancement in peripheral collisions and a suppression in central collisions. The enhancement and suppression characteristics are similar for all systems for the same centrality class. It is shown that for high-p(T)-pi(0) production, the nucleons in the d and He-3 interact mostly independently with the Au nucleus and that the counterintuitive centrality dependence is likely due to a physical correlation between multiplicity and the presence of a hard scattering process. These observations disfavor models where parton energy loss has a significant contribution to nuclear modifications in small systems. Nuclear modifications at lower p(T) resemble the Cronin effect-an increase followed by a peak in central or inelastic collisions and a plateau in peripheral collisions. The peak height has a characteristic ordering by system size as p + Au > d + Au > He-3 + Au > p + Al. For collisions with Au ions, current calculations based on initial-state cold nuclear matter effects result in the opposite order, suggesting the presence of other contributions to nuclear modifications, in particular at lower p(T).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review C
ISSN
2469-9985
e-ISSN
2469-9993
Volume of the periodical
105
Issue of the periodical within the volume
6
Country of publishing house
US - UNITED STATES
Number of pages
19
Pages from-to
064902
UT code for WoS article
000813270700001
EID of the result in the Scopus database
2-s2.0-85132354628