Measurement of prompt J/ψ pair production in pp collisions at √s = 7 Tev
Yazarlar (1)
| Makale Türü |
Özgün Makale
(ESCI dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of High Energy Physics | ||
| Dergi ISSN | 1126-6708 | ||
| Makale Dili | İngilizce | Basım Tarihi | 09-2014 |
| Cilt / Sayı / Sayfa | 2014 / 9 / 1–35 | DOI | 10.1007/JHEP09(2014)094 |
| Makale Linki | https://link.springer.com/article/10.1007/JHEP09(2014)094 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Production of prompt J/ψ meson pairs in proton-proton collisions at= 7 TeV is measured with the CMS experiment at the LHC in a data sample corresponding to an integrated luminosity of about 4.7 fb− 1. The two J/ψ mesons are fully reconstructed via their decays into μ+ μ− pairs. This observation provides for the first time access to the high-transverse-momentum region of J/ψ pair production where model predictions are not yet established. The total and differential cross sections are measured in a phase space defined by the individual J/ψ transverse momentum (p T J/ψ) and rapidity (| y J/ψ|):| y J/ψ|< 1.2 for p J/ψ T> 6.5 GeV/c; 1.2<| y J/ψ|< 1.43 for a p T threshold that scales linearly with| y J/ψ| from 6.5 to 4.5 GeV/c; and 1.43<| y J/ψ|< 2.2 for p J/ψ T> 4.5 GeV/c. The total cross section, assuming unpolarized prompt J/ψ pair production is 1.49±0.07 (stat)±0.13 (syst) nb. Different assumptions about the J/ψ … |
| Anahtar Kelimeler |
| B physics | Keywords: Hadron-Hadron Scattering |
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| Atıf Sayıları | |
| Web of Science | 59 |
| Scopus | 95 |
| Google Scholar | 158 |
| Google Scholar | 152 |