dc.contributor.author | ALICE Collaboration | |
dc.date.accessioned | 2018-11-06T12:57:06Z | |
dc.date.available | 2018-11-06T12:57:06Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | ALICE Collaboration. (2018). Neutral pion and η meson production at midrapidity in Pb-Pb collisions at √sNN = 2.76 TeV. <i>Physical Review C</i>, <i>98</i>(4), Article 044901. <a href="https://doi.org/10.1103/PhysRevC.98.044901" target="_blank">https://doi.org/10.1103/PhysRevC.98.044901</a> | |
dc.identifier.other | CONVID_28696540 | |
dc.identifier.other | TUTKAID_79366 | |
dc.identifier.uri | https://jyx.jyu.fi/handle/123456789/60126 | |
dc.description.abstract | Neutral pion and
η
meson production in the transverse momentum range 1
<
p
T
<
20
GeV
/
c
have been measured at midrapidity by the ALICE experiment at the Large Hadron Collider (LHC) in central and semicentral Pb-Pb collisions at
√
s
NN
= 2.76 TeV. These results were obtained using the photon conversion method as well as the Photon Spectrometer (PHOS) and Electromagnetic Calorimeter detectors. The results extend the upper
p
T
reach of the previous ALICE
π
0
measurements from 12 to 20
GeV
/
c
and present the first measurement of
η
meson production in heavy-ion collisions at the LHC. The
η
/
π
0
ratio is similar for the two centralities and reaches at high
p
T
a plateau value of 0.457
±
0
.
013
stat
±
0
.
018
syst
. A suppression of similar magnitude for
π
0
and
η
meson production is observed in Pb-Pb collisions with respect to their production in
p
p
collisions scaled by the number of binary nucleon-nucleon collisions. We discuss the results in terms of Next to Leading Order (NLO) pQCD predictions and hydrodynamic models. The measurements show a stronger suppression than observed at lower center-of-mass energies in the
p
T
range 6
<
p
T
<
10
GeV
/
c
. For
p
T
<
3
GeV
/
c
, hadronization models describe the
π
0
results while for the
η
some tension is observed. | fi |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | |
dc.publisher | American Physical Society | |
dc.relation.ispartofseries | Physical Review C | |
dc.rights | CC BY 4.0 | |
dc.subject.other | pions | |
dc.subject.other | eta mesons | |
dc.subject.other | heavy ion collisions | |
dc.title | Neutral pion and η meson production at midrapidity in Pb-Pb collisions at √sNN = 2.76 TeV | |
dc.type | article | |
dc.identifier.urn | URN:NBN:fi:jyu-201810314579 | |
dc.contributor.laitos | Fysiikan laitos | fi |
dc.contributor.laitos | Department of Physics | en |
dc.type.uri | http://purl.org/eprint/type/JournalArticle | |
dc.date.updated | 2018-10-31T13:15:08Z | |
dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | |
dc.description.reviewstatus | peerReviewed | |
dc.relation.issn | 2469-9985 | |
dc.relation.numberinseries | 4 | |
dc.relation.volume | 98 | |
dc.type.version | publishedVersion | |
dc.rights.copyright | © 2018 CERN, for the ALICE Collaboration | |
dc.rights.accesslevel | openAccess | fi |
dc.subject.yso | hiukkasfysiikka | |
dc.format.content | fulltext | |
jyx.subject.uri | http://www.yso.fi/onto/yso/p15576 | |
dc.rights.url | https://creativecommons.org/licenses/by/4.0/ | |
dc.relation.doi | 10.1103/PhysRevC.98.044901 | |
dc.type.okm | A1 | |