@Article{ATLASCollaborationAad_etal2021, author="ATLAS Collaboration (Aad, G. et al and Aparisi Pozo, J. A. and Bailey, A. J. and Cabrera Urban, S. and Cardillo, F. and Castillo, F. L. and Castillo Gimenez, V. and Costa, M. J. and Escobar, C. and Estrada Pastor, O. and Fiorini, L. and Fullana Torregrosa, E. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Gonzalvo Rodriguez, G. R. and Guerrero Rojas, J. G. R. and Higon-Rodriguez, E. and Lacasta, C. and Lozano Bahilo, J. J. and Mamuzic, J. and Marti-Garcia, S. and Martinez Agullo, P. and Miralles Lopez, M. and Mitsou, V. A. and Moreno Llacer, M. and Navarro-Gonzalez, J. and Poveda, J. and Prades Iba{\~{n}}ez, A. and Rodriguez Bosca, S. and Ruiz-Martinez, A. and Sabatini, P. and Salt, J. and Sayago Galvan, I. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valero, A. and Valls Ferrer, J. A. and Villaplana Perez, M. and Vos, M.", title="Two-particle azimuthal correlations in photonuclear ultraperipheral Pb plus Pb collisions at 5.02 TeV with ATLAS", journal="Physical Review C", year="2021", publisher="Amer Physical Soc", volume="104", number="1", pages="014903--31pp", abstract="Two-particle long-range azimuthal correlations are measured in photonuclear collisions using 1.7 nb(-1) of 5.02 TeV Pb+Pb collision data collected by the ATLAS experiment at the CERN Large Hadron Collider. Candidate events are selected using a dedicated high-multiplicity photonuclear event trigger, a combination of information from the zero-degree calorimeters and forward calorimeters, and from pseudorapidity gaps constructed using calorimeter energy clusters and charged-particle tracks. Distributions of event properties are compared between data and Monte Carlo simulations of photonuclear processes. Two-particle correlation functions are formed using charged-particle tracks in the selected events, and a template-fitting method is employed to subtract the nonflow contribution to the correlation. Significant nonzero values of the second-and third-order flow coefficients are observed and presented as a function of charged-particle multiplicity and transverse momentum. The results are compared with flow coefficients obtained in proton-proton and proton-lead collisions in similar multiplicity ranges, and with theoretical expectations. The unique initial conditions present in this measurement provide a new way to probe the origin of the collective signatures previously observed only in hadronic collisions.", optnote="WOS:000672773000006", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4918), last updated on Wed, 11 Aug 2021 12:42:03 +0000", issn="2469-9985", doi="10.1103/PhysRevC.104.014903", opturl="https://arxiv.org/abs/2101.10771", opturl="https://doi.org/10.1103/PhysRevC.104.014903", language="English" }