## Measurement of the exclusive Υ production cross-section in pp collisions at \$ \sqrts=7 \$ TeV and 8 TeVстатья

Статья опубликована в высокорейтинговом журнале

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Дата последнего поиска статьи во внешних источниках: 18 марта 2016 г.
• Авторы:
• Журнал: Journal of High Energy Physics
• Том: 9
• Год издания: 2015
• Издательство: Institute of Physics Publishing
• Местоположение издательства: United Kingdom
• Первая страница: 084
• DOI: 10.1007/JHEP09(2015)084
• Аннотация: 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 7TeV and 8TeV. The measured Υ(1S) and Υ(2S) production cross-sections are σ(pp→pΥ(1S)p)σ(pp→pΥ(2S)p)==9.0±2.1±1.7 pb and1.3±0.8±0.3 pb, where the first uncertainties are statistical and the second are systematic. The Υ(1S) cross-section 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.
• Добавил в систему: Бережной Александр Викторович

### Работа с статьей

 [1] Measurement of the exclusive Υ production cross-section in pp collisions at =7 tev and 8 tev / C. LHCb, А. В. Бережной, А. К. Лефлат et al. // Journal of High Energy Physics. — 2015. — Vol. 9. — P. 084. 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