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Measurement of the exclusive Υ production cross-section in pp collisions at s=7 TeV and 8 TeV
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LHCb collaboration (Including: Blake, Thomas, Craik, Daniel, Crocombe, Andrew, Dossett, D., Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, Mathad, Abhijit , O'Hanlon, Daniel P., Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte and Whitehead, M. (Mark)). (2015) Measurement of the exclusive Υ production cross-section in pp collisions at s=7 TeV and 8 TeV. Journal of High Energy Physics, 2015 (9). 84. doi:10.1007/jhep09(2015)084 ISSN 1029-8479.
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Official URL: https://doi.org/10.1007/jhep09(2015)084
Abstract
A study is presented of central exclusive production of Υ(nS) states, where the Υ(nS) resonances decay to the μ+μ− final state, using pp collision data recorded by the LHCb experiment. The cross-section is measured in the rapidity range 2 < y(Υ) < 4.5 where the muons are reconstructed in the pseudorapidity range 2 < η(μ±) < 4.5. The data sample corresponds to an integrated luminosity of 2.9 fb−1 and was collected at centre-of-mass energies of 7 TeV and 8 TeV. The measured Υ(1S) and Υ(2S) production cross-sections are σpp→pΥ1Sp=9.0±2.1±1.7pbandσpp→pΥ2Sp=1.3±0.8±0.3pb, where the first uncertainties are statistical and the second are systematic. The Υ(1S) crosssection is also measured as a function of rapidity and is found to be in good agreement with Standard Model predictions. An upper limit is set at 3.4 pb at the 95% confidence level for the exclusive Υ(3S) production cross-section, including possible contamination from χb(3P ) → Υ(3S)γ decays.
Item Type: | Journal Article | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
SWORD Depositor: | Library Publications Router | ||||
Journal or Publication Title: | Journal of High Energy Physics | ||||
Publisher: | Springer Berlin Heidelberg | ||||
ISSN: | 1029-8479 | ||||
Official Date: | 14 September 2015 | ||||
Dates: |
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Volume: | 2015 | ||||
Number: | 9 | ||||
Article Number: | 84 | ||||
DOI: | 10.1007/jhep09(2015)084 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Date of first compliant deposit: | 14 September 2018 | ||||
Date of first compliant Open Access: | 14 September 2018 |
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