Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV - INSPIRE

DataBETA

Nuclear modification of $\Upsilon$ states in pPb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV

CMS

Collaboration

Feb 23, 2022

40 pages

Published in:

Phys.Lett.B 835 (2022) 137397

Published: Aug 28, 2022

e-Print:

2202.11807 [hep-ex]

DOI:

10.1016/j.physletb.2022.137397 (publication)

Report number:

CMS-HIN-18-005,
CERN-EP-2020-181

Experiments:

CERN-LHC-CMS

View in:

reference search38 citations

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Abstract: (Elsevier B.V.)

Production cross sections of Image 1, Image 2, and Image 3 states decaying into Image 4 in proton-lead (

p Pb

) collisions are reported using data collected by the CMS experiment at

\sqrt{s_{_{NN}}} = 5.02 TeV

. A comparison is made with corresponding cross sections obtained with

p p

data measured at the same collision energy and scaled by the Pb nucleus mass number. The nuclear modification factor for Image 1 is found to be Image 5. Similar results for the excited states indicate a sequential suppression pattern, such that Image 6. The suppression of all states is much less pronounced in

p Pb

than in PbPb collisions, and independent of transverse momentum Image 7 and center-of-mass rapidity Image 8 of the individual Image 9 state in the studied range Image 10 and Image 11. Models that incorporate final-state effects of bottomonia in pPb collisions are in better agreement with the data than those which only assume initial-state modifications.

Note:

Replaced with the published version. Added the journal reference. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIN-18-005 (CMS Public Pages)

CMS
Bottomonium
Quarkonium suppression
Quark-gluon plasma
Heavy ion collisions
p nucleus: interaction
lead
nucleus: mass number
suppression
Upsilon(9460): leptonic decay

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