Central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at √ s =13 TeV

Central exclusive production of J/ψ and ψ(2S) mesons in pp collisions at √ s =13 TeV

Detalhes bibliográficos
Parent link:Journal of High Energy Physics
№ 10.— 2018.— [167, 26 p.]
Corporate Authors: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР)
Outros Autores: Aaij R. Roel, Adeva B. Bernardo, Adinolfi M. Marco, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich, Vagner A. R. Aleksandr Rudolfovich
Resumo:Title screen
Measurements are reported of the central exclusive production of J/ψ and ψ(2S) mesons in ppcollisions 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 beσJ/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.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.
Publicado em: 2018
Assuntos:
электронный ресурс
труды учёных ТПУ
физика
адронное взаимодействие
рассеяние
Acesso em linha:http://earchive.tpu.ru/handle/11683/57782
https://doi.org/10.1007/JHEP10(2018)167
Formato: Recurso Electrónico Capítulo de Livro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=658839

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