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Measurement of the cross-section ratio σ ψ (2 S ) / σ J / ψ (1 S ) in deep inelastic exclusive ep scattering at HERAстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 28 октября 2016 г.
- Авторы: Dementiev R.K., Gladilin L.K., Golubkov Yu A., Korzhavina I.A., Levchenko B.B., Lukina O.Yu, Shcheglova L.M., Zotkin D.S., ZEUS Collaboration
- Журнал: Nuclear Physics B
- Том: 909
- Номер: 1
- Год издания: 2016
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 934
- Последняя страница: 953
- DOI: 10.1016/j.nuclphysb.2016.06.010
- Аннотация: 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.
- Добавил в систему: Лукина Ольга Юрьевна