Measurement of the cross-section ratio [sigma][psi](2S)/[sigma]J/[psi](1S) in deep inelastic exclusive ep scattering at HERA
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 cen...
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| Main Authors: | , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 June 2016
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| In: |
Nuclear physics. B, Particle physics
Year: 2016, Volume: 909, Pages: 934-953$t |
| ISSN: | 1873-1562 |
| DOI: | 10.1016/j.nuclphysb.2016.06.010 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.nuclphysb.2016.06.010 Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0550321316301523 
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| Author Notes: | ZEUS Collaboration* |
| Summary: | 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 J/ψ(1S)π+π− 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 Q2,W and t. The results are compared to predictions of QCD-inspired models of exclusive vector-meson production. |
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| Item Description: | *ZEUS Collaboration: H. Abramowicz, M. Lisovyi [und 144 weitere Personen] Im Titel sind "sigma" und "psi" als griechische Buchstaben dargestellt Im Titel sind die Formulierungen "psi(2S)" und "J/psi(1S)" tiefgestellt Gesehen am 20.07.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1873-1562 |
| DOI: | 10.1016/j.nuclphysb.2016.06.010 |