Abramowicz, H;
Abt, I;
Adamczykh, L;
Adamus, M;
Antonelli, S;
Aushev, V;
Aushev, Y;
... Zotkin, DS; + view all
(2016)
Measurement of the cross-section ratio sigma(psi(2S))/sigma(J/psi(1S)) in deep inelastic exclusive ep scattering at HERA.
Nuclear Physics B
, 909
pp. 934-953.
10.1016/j.nuclphysb.2016.06.010.
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Abstract
The exclusive deep inelastic electroproduction of ψ(2S) and J/ψ(1S) at an ep centre-of-mass energy of 317 GeV has been studied with the ZEUS detector at HERA in the kinematic range 2<Q2<80 GeV2, 30<W<210 GeV and |t|<1 GeV2, where Q2 is the photon virtuality, W is the photon–proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The data for 2<Q2<5 GeV2 were taken in the HERA I running period and correspond to an integrated luminosity of 114 pb−1. The data for 5<Q2<80 GeV2 are from both HERA I and HERA II periods and correspond to an integrated luminosity of 468 pb−1. The decay modes analysed were μ+μ− and View the MathML source for the ψ(2S) and μ+μ− for the J/ψ(1S). The cross-section ratio σψ(2S)/σJ/ψ(1S) has been measured as a function of View the MathML source and t. The results are compared to predictions of QCD-inspired models of exclusive vector-meson production.
| Type: | Article |
|---|---|
| Title: | Measurement of the cross-section ratio sigma(psi(2S))/sigma(J/psi(1S)) in deep inelastic exclusive ep scattering at HERA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.nuclphysb.2016.06.010 |
| Publisher version: | http://dx.doi.org/10.1016/j.nuclphysb.2016.06.010 |
| Language: | English |
| Additional information: | © 2016 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
| Keywords: | Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, Central Tracking Detector, Zeus Barrel Calorimeter, Vector-mesons, Quantum Electrodynamics, Color Transparency, Infinite-momentum, J/psi Mesons, Design, Electroproduction, Photoproduction |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1521732 |
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