@article{bce5cd89e7454c3e8f18b656c6326bed,
title = "Two-particle azimuthal correlations as a probe of collective behaviour in deep inelastic ep scattering at HERA",
abstract = "Two-particle azimuthal correlations have been measured in neutral current deep inelastic ep scattering with virtuality Q2> 5 GeV2 at a centre-of-mass energy s = 318 GeV recorded with the ZEUS detector at HERA. The correlations of charged particles have been measured in the range of laboratory pseudorapidity −1.5 < η < 2.0 and transverse momentum 0.1 < pT< 5.0 GeV and event multiplicities Nch up to six times larger than the average 〈Nch〉 ≈ 5. The two-particle correlations have been measured in terms of the angular observables cn{2} = 〈〈cosnΔφ〉〉, where n is between 1 and 4 and ∆φ is the relative azimuthal angle between the two particles. Comparisons with available models of deep inelastic scattering, which are tuned to reproduce inclusive particle production, suggest that the measured two-particle correlations are dominated by contributions from multijet production. The correlations observed here do not indicate the kind of collective behaviour recently observed at the highest RHIC and LHC energies in high-multiplicity hadronic collisions.",
keywords = "Collective flow, Lepton-Nucleon Scattering (experiments), Particle correlations and fluctuations, Quark gluon plasma",
author = "{The ZEUS collaboration} and I. Abt and L. Adamczyk and R. Aggarwal and V. Aushev and O. Behnke and U. Behrens and A. Bertolin and I. Bloch and I. Brock and Brook, {N. H.} and R. Brugnera and A. Bruni and Bussey, {P. J.} and A. Caldwell and M. Capua and Catterall, {C. D.} and J. Chwastowski and J. Ciborowski and R. Ciesielski and Cooper-Sarkar, {A. M.} and M. Corradi and Dementiev, {R. K.} and S. Dusini and J. Ferrando and S. Floerchinger and B. Foster and E. Gallo and D. Gangadharan and A. Garfagnini and A. Geiser and Gladilin, {L. K.} and Golubkov, {Yu A.} and G. Grzelak and C. Gwenlan and D. Hochman and Jomhari, {N. Z.} and I. Kadenko and S. Kananov and U. Karshon and P. Kaur and R. Klanner and U. Klein and Korzhavina, {I. A.} and N. Kovalchuk and H. Kowalski and O. Kuprash and M. Kuze and Levchenko, {B. B.} and A. Levy and B. L{\"o}hr",
note = "Publisher Copyright: {\textcopyright} 2020, The Author(s).",
year = "2020",
month = apr,
day = "1",
doi = "10.1007/JHEP04(2020)070",
language = "אנגלית",
volume = "2020",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "4",
}