Central exclusive production of J/[psi] and [psi](2S) mesons in pp collisions at √s=13 TeV
Measurements are reported of the central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at a centre-of-mass energy of 13 TeV. Backgrounds are significantly reduced compared to previous measurements made at lower energies through the use of new forward shower counters. The products of...
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
October 26, 2018
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| In: |
Journal of high energy physics
Year: 2018, Issue: 10 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP10(2018)167 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1007/JHEP10(2018)167 Verlag, Volltext: https://link.springer.com/content/pdf/10.1007%2FJHEP10%282018%29167.pdf 
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| Author Notes: | the LHCb Collaboration |
MARC
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| 245 | 1 | 0 | |a Central exclusive production of J/[psi] and [psi](2S) mesons in pp collisions at √s=13 TeV |c the LHCb Collaboration |
| 246 | 3 | 0 | |a sqrt, ψ |
| 246 | 3 | 3 | |a Central exclusive production of J/psi and psi (2S) mesons in pp collisions at square root s = 13TeV |
| 264 | 1 | |c October 26, 2018 | |
| 300 | |a 27 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
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| 500 | |a Im Titel wird "psi" als griechischer Buchstabe dargestellt | ||
| 500 | |a The LHCb collaboration: R. Aaij, P. d'Argent, S. Bachmann, S. Braun, A. Comerma-Montells, M. De Cian, F. Dordei, S. Esen, C. Färber, D. Gerick, X. Han, S. Hansmann-Menzemer, M. Kecke, B. Khanji, P. Krokovny, B. Leverington, J. Marks, D.S. Mitzel, S. Neubert, M. Neuner, A. Piucci, P. Seyfert, M. Stahl, S. Stemmle, J. van Tilburg, U. Uwer, A. Zhelezov [und weitere] | ||
| 500 | |a Gesehen am 04.06..2019 | ||
| 520 | |a Measurements are reported of the central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at a centre-of-mass energy of 13 TeV. Backgrounds are significantly reduced compared to previous measurements made at lower energies through the use of new forward shower counters. The products of the cross-sections and the branching fractions for the decays to dimuons, where both muons are within the pseudorapidity range 2.0 < η < 4.5, are measured to be σJ/ψ→μ+μ−=435±18±11±17 pbσψ(2S)→μ+μ−=11.1±1.1±0.3±0.4 pb.σJ/ψ→μ+μ−=435±18±11±17 pbσψ(2S)→μ+μ−=11.1±1.1±0.3±0.4 pb. \begin{array}{c}\hfill {\sigma}_{J/\psi \to {\mu}^{+}{\mu}^{-}} = 435 \pm 18 \pm 11 \pm 17\ \mathrm{p}\mathrm{b}\hfill \\ {}\hfill {\sigma}_{\psi (2S)\to {\mu}^{+}{\mu}^{-}} = 11.1 \pm 1.1 \pm 0.3 \pm 0.4\ \mathrm{p}\mathrm{b}.\hfill \end{array} The first uncertainties are statistical, the second are systematic, and the third are due to the luminosity determination. The cross-sections are also measured differentially for meson rapidities between 2.0 and 4.5. Good agreement is observed with theoretical predictions. Photoproduction cross-sections are derived and compared to previous experiments, and a deviation from a pure power-law extrapolation of lower energy data is observed. Open image in new window | ||
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| 650 | 4 | |a Particle and resonance production | |
| 650 | 4 | |a Quarkonium | |
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