Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/109487
Title: | Measurement of χc1and χc2production with √s = 7 TeV pp collisions at ATLAS | Authors: | Santos, S. P. Amor dos Carvalho, J. Fiolhais, M. C. N. Galhardo, B. Oliveira, M. Veloso, F. Wolters, H. ATLAS Collaboration |
Keywords: | Hadron-Hadron Scattering | Issue Date: | 2014 | Publisher: | Springer Nature | Serial title, monograph or event: | Journal of High Energy Physics | Volume: | 2014 | Issue: | 7 | Abstract: | The prompt and non-prompt production cross-sections for the χc1and χc2charmonium states are measured in pp collisions at √s = 7TeV with the ATLAS detector at the LHC using 4.5 fb−1of integrated luminosity. The χcstates are reconstructed through the radiative decay χc→ J/ψγ (with J/ψ → μ+μ−) where photons are reconstructed from γ → e+e− conversions. The production rate of the χc2state relative to the χc1state is measured for prompt and non-prompt χcas a function of J/ψ transverse momentum. The prompt χccross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χcdecays. The fractions of χc1and χc2produced in b-hadron decays are also measured. | URI: | https://hdl.handle.net/10316/109487 | DOI: | 10.1007/JHEP07(2014)154 | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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Measurement-of-subc1suband-subc2subproduction-with-s--7-TeV-pp-collisions-at-ATLASJournal-of-High-Energy-Physics.pdf | 1.27 MB | Adobe PDF | View/Open |
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