100. et al.(CMS Collab.) J
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
Dergi Adı High Energy Phys
Makale Dili – Basım Tarihi 01-2011
Cilt / Sayı / Sayfa 1110 / 7 / 132–0 DOI –
Makale Linki https://scholar.google.com/scholar?cluster=13942853955904767946&hl=en&oi=scholarr
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
First measurements of dihadron correlations for charged particles are presented for central PbPb collisions at a nucleon-nucleon center-of-mass energy of 2.76 TeV over a broad range in relative pseudorapidity (∆ η) and the full range of relative azimuthal angle (∆ φ). The data were collected with the CMS detector, at the LHC. A broadening of the away-side (∆ φ≈ π) azimuthal correlation is observed at all∆ η, as compared to the measurements in pp collisions. Furthermore, long-range dihadron correlations in∆ η are observed for particles with similar φ values. This phenomenon, also known as the “ridge”, persists up to at least|∆ η|= 4. For particles with transverse momenta (pT) of 2-4 GeV/c, the ridge is found to be most prominent when these particles are correlated with particles of pT= 2-6 GeV/c, and to be much reduced when paired with particles of pT= 10-12 GeV/c.
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