Measurement of the prompt J psi and psi 2S polarizations in ppcollisions at root s 7 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2013)
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 01-2013
Kabul Tarihi – Yayınlanma Tarihi 01-12-2013
Cilt / Sayı / Sayfa 727 / 4 / 381–402 DOI 10.1016/j.physletb.2013.10.055
Makale Linki https://www.sciencedirect.com/science/article/pii/S0370269313008629/pdfft?md5=0e32e291f18639adb4c552d30524a62d&pid=1-s2.0-S0370269313008629-main.pdf
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
The polarizations of prompt J/ψ and ψ (2 S) mesons are measured in proton–proton collisions at s= 7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 fb− 1. The prompt J/ψ and ψ (2 S) polarization parameters λ ϑ, λ φ, and λ ϑ φ, as well as the frame-invariant quantity λ˜, are measured from the dimuon decay angular distributions in three different polarization frames. The J/ψ results are obtained in the transverse momentum range 14< p T< 70 GeV, in the rapidity intervals| y|< 0.6 and 0.6<| y|< 1.2. The corresponding ψ (2 S) results cover 14< p T< 50 GeV and include a third rapidity bin, 1.2<| y|< 1.5. No evidence of large polarizations is seen in these kinematic regions, which extend much beyond those previously explored.
Anahtar Kelimeler
CMS | Physics | Quarkonium polarization | Quarkonium production
Science Direct
BM Sürdürülebilir Kalkınma Amaçları
Atıf Sayıları
Web of Science 142
Scopus 136
Google Scholar 552
Measurement of the prompt J psi and psi 2S polarizations in ppcollisions at root s 7 TeV