Erişime Açık

Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The pseudorapidity density of charged particles, dNch=dη, at midrapidity in Pb-Pb collisions has been measured at a center-of-mass energy per nucleon pair of sNN 1⁄4 5.02 TeV. For the 5% most central collisions, we measure a value of 1943 54. The rise in dNch=dη as a function of sNN is steeper than that observed in proton-proton collisions and follows the trend established by measurements at lower energy. The increase of dNch=dη as a function of the average number of participant nucleons, hNparti, calculated in a Glauber model, is compared with the previous measurement at sNN 1⁄4 2.76 TeV. A c ...Daha fazlası

Makale 2016 7 Görüntülenme

Erişime Açık

Charged-particle multiplicities in proton–proton collisions at √s = 0.9 to 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

A detailed study of pseudorapidity densities and multiplicity distributions of primary charged particles pro- duced in proton–proton collisions, at √s = 0.9, 2.36, 2.76, 7 and 8 TeV, in the pseudorapidity range |η| < 2, was carried out using the ALICE detector. Measurements were obtained for three event classes: inelastic, non-single diffractive and events with at least one charged particle in the pseudorapidity interval |η| < 1. The use of an improved track-counting algo- rithm combined with ALICE’s measurements of diffractive processes allows a higher precision compared to our previ- ous pub ...Daha fazlası

Makale 2017 3 Görüntülenme

Erişime Açık

Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The centrality dependence of the charged-particle pseudorapidity density measured with ALICE in Pb–Pb collisions at √sNN = 2.76 TeV over a broad pseudorapidity range is presented. This Letter extends the previous results reported by ALICE to more peripheral collisions. No strong change of the overall shape of charged-particle pseudorapidity density distributions with centrality is observed, and when normalised to the number of participating nucleons in the collisions, the evolution over pseudorapidity with centrality is likewise small. The broad pseudorapidity range (−3.5 < η < 5) allows preci ...Daha fazlası

Makale 2016 6 Görüntülenme

Erişime Açık

Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √s = 0.9, 7, and 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present the charged-particle multiplicity dis- tributions over a wide pseudorapidity range (−3.4 < η < 5.0) for pp collisions at √s = 0.9, 7, and 8 TeV at the LHC. Results are based on information from the Silicon Pixel Detector and the Forward Multiplicity Detector of ALICE, extending the pseudorapidity coverage of the earlier publi- cations and the high-multiplicity reach. The measurements are compared to results from the CMS experiment and to PYTHIA, PHOJET and EPOS LHC event generators, as well as IP-Glasma calculations.

Makale 2017 4 Görüntülenme

Erişime Açık

First measurement of ksi-0c production in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of the charm-strange baryon Ξ0c is measured for the first time at the LHC via its semileptonic decay into e+Ξ−νe in pp collisions at s√=7 TeV with the ALICE detector. The transverse momentum (pT) differential cross section multiplied by the branching ratio is presented in the interval 1 < pT < 8 GeV/c at mid-rapidity, |y| < 0.5. The transverse momentum dependence of the Ξ0c baryon production relative to the D0 meson production is compared to predictions of event generators with various tunes of the hadronisation mechanism, which are found to underestimate the measured cross-sect ...Daha fazlası

Makale 2018 5 Görüntülenme

Erişime Açık

Freeze-out radii extracted from three-pion cumulants in pp, p–Pb and Pb–Pb collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high-multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three-pion cumulant correlations. We present the f ...Daha fazlası

Makale 2014 3 Görüntülenme

Detaylı Arama

Filtreler

Koleksiyon [3]

Ambargo Durumu [1]

Tam Metin [1]

Yayın Türü [2]

Yazar/lar [2]

Atıf Dizini [2]

Konu Başlıkları [20]

Yayıncı [1]

Yayın Tarihi [8]

Yayın Dili [1]

Centrality Dependence of the Charged-Particle Multiplicity Density at Midrapidity in Pb-Pb Collisions at 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Charged-particle multiplicities in proton–proton collisions at √s = 0.9 to 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Centrality evolution of the charged-particle pseudorapidity density over a broad pseudorapidity range in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Charged-particle multiplicity distributions over a wide pseudorapidity range in proton-proton collisions at √s = 0.9, 7, and 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

First measurement of ksi-0c production in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Freeze-out radii extracted from three-pion cumulants in pp, p–Pb and Pb–Pb collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration