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Abstract
The differential yields of charged particles having pseudorapidity within |η| < 1
are measured using xenon-xenon (XeXe) collisions at √sNN = 5.44 TeV. The data, corresponding to an integrated luminosity of 3.42 µb
−1
, were collected in 2017 by the CMS
experiment at the LHC. The yields are reported as functions of collision centrality and
transverse momentum, pT, from 0.5 to 100 GeV. A previously reported pT spectrum from
proton-proton collisions at √
s = 5.02 TeV is used for comparison after correcting for the
difference in center-of-mass energy. The nuclear modification factors using this reference,
R∗
AA, are constructed and compared to previous measurements and theoretical predictions.
In head-on collisions, the R∗
AA has a value of 0.17 in the pT range of 6–8 GeV, but increases
to approximately 0.7 at 100 GeV. Above ≈6 GeV, the XeXe data show a notably smaller
suppression than previous results for lead-lead (PbPb) collisions at √sNN = 5.02 TeV when
compared at the same centrality (i.e., the same fraction of total cross section). However,
the XeXe suppression is slightly greater than that for PbPb in events having a similar
number of participating nucleons.
are measured using xenon-xenon (XeXe) collisions at √sNN = 5.44 TeV. The data, corresponding to an integrated luminosity of 3.42 µb
−1
, were collected in 2017 by the CMS
experiment at the LHC. The yields are reported as functions of collision centrality and
transverse momentum, pT, from 0.5 to 100 GeV. A previously reported pT spectrum from
proton-proton collisions at √
s = 5.02 TeV is used for comparison after correcting for the
difference in center-of-mass energy. The nuclear modification factors using this reference,
R∗
AA, are constructed and compared to previous measurements and theoretical predictions.
In head-on collisions, the R∗
AA has a value of 0.17 in the pT range of 6–8 GeV, but increases
to approximately 0.7 at 100 GeV. Above ≈6 GeV, the XeXe data show a notably smaller
suppression than previous results for lead-lead (PbPb) collisions at √sNN = 5.02 TeV when
compared at the same centrality (i.e., the same fraction of total cross section). However,
the XeXe suppression is slightly greater than that for PbPb in events having a similar
number of participating nucleons.
| Datum van beschikbaarheid | 23 jan 2019 |
|---|---|
| Uitgever | HEPData |
Format
- Format
-
-
iBOF/23/074: Ontsluiten van de charm-Higgs koppeling bij de LHC
D'Hondt, J., Lowette, S., Van Mechelen, P. & Dobur, D.
1/01/23 → 31/12/26
Project: Fundamenteel
-
FWOIRI13: Het CMS experiment bij de Large Hadron Collider in CERN
1/01/23 → 31/12/26
Project: Fundamenteel
Onderzoekersoutput
- 1 Article
-
Charged-particle nuclear modification factors in XeXe collisions at 푠NN‾‾‾‾√=5.44 TeV
CMS Collaboration, Abu Zeid, S., Blekman, F., D'Hondt, J., De Bruyn, I. H., Deroover, K., Lowette, S., Moortgat, S., Moreels, L., Python, Q., Skovpen, K., Tavernier, S., Van Doninck, W., Van Mulders, P., Van Parijs, I. M., De Clercq, J., Lontkovskyi, D., Flouris, G. & Marchesini, I., 22 okt 2018, In: The Journal of high energy physics. 2018, 10, 41 blz., 138.Onderzoeksoutput: Article › peer review
Open Access23 Citaten (Scopus)