Author
Tumasyan, A., Işıldak, Bora
Publication Date
2023-08-04
Publication Place
-
American Physical Society
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0031-9007
Record ID
533c6ca3-4c48-475f-856c-787531942b6a
Library Location
Natural and Mathematical Sciences
Date
2023-08-04
Notes
BMBWF
and FWF (Austria); FNRS and FWO (Belgium); CNPq,
CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES
and BNSF (Bulgaria); CERN; CAS, MoST, and NSFC
(China); MINCIENCIAS (Colombia); MSES and CSF
(Croatia); RIF (Cyprus); SENESCYT (Ecuador); MoER,
ERC PUT and ERDF (Estonia); Academy of Finland, MEC,
and HIP (Finland); CEA and CNRS/IN2P3 (France);
BMBF, DFG, and HGF (Germany); GSRI (Greece);
NKFIH (Hungary); DAE and DST (India); IPM (Iran);
SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of
Korea); MES (Latvia); LAS (Lithuania); MOE and UM
(Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP,
and UASLP-FAI (Mexico); MOS (Montenegro); MBIE
(New Zealand); PAEC (Pakistan); MES and NSC (Poland);
FCT (Portugal); MESTD (Serbia); MCIN/AEI and PCTI
(Spain); MOSTR (Sri Lanka); Swiss Funding Agencies
(Switzerland); MST (Taipei); MHESI and NSTDA
(Thailand); TUBITAK and TENMAK (Turkey); NASU
(Ukraine); STFC (United Kingdom); DOE and NSF (U.S.).
Sample Text
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.
DOI
10.1103/PhysRevLett.131.051901
Cilt
131
