Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/14027
Title: Azimuthal Correlations within Exclusive Dijets with Large Momentum Transfer in Photon-Lead Collisions
Authors: Tumasyan, A.
Adam, W.
Bergauer, T.
Dragicevic, M.
Del, Valle, A.E.
Frühwirth, R.
Jeitler, M.
Keywords: Colliding beam accelerators
Heavy ions
Momentum
Momentum transfer
Polarization
Rutherford backscattering spectroscopy
Azimuthal correlations
Gluon polarization
Heavy-ion collisions
Higher energy photons
Large momentum transfers
Lead collisions
Measurements of
Spatial geometry
Spatial polarization
Transverse momenta
Photons
Issue Date: 2023
Publisher: American Physical Society
Abstract: The structure of nucleons is multidimensional and depends on the transverse momenta, spatial geometry, and polarization of the constituent partons. Such a structure can be studied using high-energy photons produced in ultraperipheral heavy-ion collisions. The first measurement of the azimuthal angular correlations of exclusively produced events with two jets in photon-lead interactions at large momentum transfer is presented, a process that is considered to be sensitive to the underlying nuclear gluon polarization. This study uses a data sample of ultraperipheral lead-lead collisions at s NN = 5.02 TeV , corresponding to an integrated luminosity of 0.38 nb - 1 , collected with the CMS experiment at the LHC. The measured second harmonic of the correlation between the sum and difference of the two jet transverse momentum vectors is found to be positive, and rising, as the dijet transverse momentum increases. A well-tuned model that has been successful at describing a wide range of proton scattering data from the HERA experiments fails to describe the observed correlations, suggesting the presence of gluon polarization effects. © 2023 CERN, for the CMS Collaboration.
URI: https://doi.org/10.1103/PhysRevLett.131.051901
https://hdl.handle.net/11147/14027
ISSN: 0031-9007
Appears in Collections:PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

Show full item record



CORE Recommender

SCOPUSTM   
Citations

3
checked on Feb 17, 2024

Page view(s)

14
checked on Feb 23, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.