Centrality dependence of dihadron correlations and azimuthal anisotropyharmonics in PbPb collisions at root s NN 2 76 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | European Physical Journal C (Q4) | ||
| Dergi ISSN | 1434-6044 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI | ||
| Makale Dili | İngilizce | Basım Tarihi | 05-2012 |
| Cilt / Sayı / Sayfa | 72 / 5 / 1–26 | DOI | 10.1140/epjc/s10052-012-2012-3 |
| UAK Araştırma Alanları |
Yüksek Enerji ve Parçacık Fiziği
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| Özet |
| Measurements from the CMS experiment at the LHC of dihadron correlations for charged particles produced in PbPb collisions at a nucleon-nucleon centre-of-mass energy of 2.76 TeV are presented. The results are reported as a function of the particle transverse momenta (p (T)) and collision centrality over a broad range in relative pseudorapidity (Delta eta) and the full range of relative azimuthal angle (Delta phi). The observed two-dimensional correlation structure in Delta eta and Delta phi is characterised by a narrow peak at (Delta eta, Delta phi) approximate to (0, 0) from jet-like correlations and a long-range structure that persists up to at least vertical bar Delta eta vertical bar= 4. An enhancement of the magnitude of the short-range jet peak is observed with increasing centrality, especially for particles of p (T) around 1-2 GeV/c. The long-range azimuthal dihadron correlations are extensively studied using a Fourier decomposition analysis. The extracted Fourier coefficients are found to factorise into a product of single-particle azimuthal anisotropies up to p (T) approximate to 3-3.5 GeV/c for at least one particle from each pair, except for the second-order harmonics in the most central PbPb events. Various orders of the single-particle azimuthal anisotropy harmonics are extracted for associated particle p (T) of 1-3 GeV/c, as a function of the trigger particle p (T) up to 20 GeV/c and over the full centrality range. |
| Anahtar Kelimeler |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Scopus | 245 |
| Google Scholar | 2 |