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Light (anti-)nuclei production and elliptic flow at the LHC with ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

Results on the production of stable light nuclei, including deuterons, He-3, He-4 and the corresponding anti-nuclei, in Pb-Pb collisions at root s(NN) = 2.76 TeV and root s(NN) = 5.02 TeV are presented and compared with theoretical predictions and with the results in small systems to provide insight into the production mechanisms of (anti-)nuclei at colliders. The experimental results are presented giving a critical view of their comparison to the expectations from coalescence and hydrodynamic models that aim at describing both the p(T)-spectra and the elliptic flow.

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Spin alignment measurements using vector mesons with ALICE detector at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

http://hdl.handle.net/20.500.12498/4457

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Electroweak boson measurements in p-Pb and Pb-Pb collisions at √sNN = 5.02 TeV with ALICE at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

The ALICE collaboration has measured the electroweak boson production at forward rapidity in Pb-Pb and p-Pb collisions at root S-NN = 5.02 TeV. Final results on the Z(0) boson production in Pb-Pb collisions are presented as a function of centrality and rapidity. Calculations based on free parton distribution functions overestimate the measurement up to 3 sigma. In addition, final results on W-+/- and Z(0) bosons production in p-Pb collisions at the same energy will be presented and discussed.

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Technical Design Report for the Upgrade of the ALICE Inner Tracking System

KARASU UYSAL, Ayben | ALICE Collaboration

ALICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. A key element of the ALICE upgrade is the construction of a new, ultra-light, high-resolution Inner Tracking System (ITS) based on monolithic CMOS pixel detectors. T ...Daha fazlası

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Upgrade of the ALICE central barrel tracking detectors: ITS and TPC

KARASU UYSAL, Ayben | ALICE Collaboration

The ALICE Collaboration will undertake a major upgrade of the detector apparatus during the second LHC Long Shutdown LS2 (2019–2020) in view of the Runs 3 and 4 (2021–2029). The objective of the upgrade is two-fold: i) an improvement of the tracking precision and efficiency, in particular in the low-momentum range; ii) an improvement of the readout capabilities of the experiment, in order to fully exploit the luminosity for heavy ions envisaged after LS2. The first goal will be achieved by replacing the Inner Tracking System with a new tracker, composed of seven layers of silicon pixel detecto ...Daha fazlası

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Muon physics at forward rapidity with the ALICE detector upgrade

KARASU UYSAL, Ayben | ALICE Collaboration

ALICE is the experiment specifically designed to study the Quark-Gluon Plasma (QGP) in heavy-ion collisions at the CERN LHC. The ALICE detector will be upgraded during the Long Shutdown 2, planned for 2019-2020, in order to cope with the maximum interaction rate of 50 kHz of Pb-Pb collisions foreseen for Runs 3 and 4. The ambitious programme of high-precision measurements, expected for muon physics after 2020, requires an upgrade of the front-end and readout electronics of the existing Muon Spectrometer. This concerns the Cathode Pad Chambers (CPC) used for tracking and the Resistive Plate Cha ...Daha fazlası

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Upgrade of the ALICE Experiment Letter Of Intent

KARASU UYSAL, Ayben | ALICE Collaboration

ALICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. These plans are presented in the ALICE Upgrade Letter of Intent, submitted to the LHCC (LHC experiments Committee) in September 2012. In order to fully exploit the p ...Daha fazlası

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Multiplicity and transverse momentum evolution of charge-dependent correlations in pp, p–Pb, and Pb–Pb collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

We report on two-particle charge-dependent correlations in pp, p-Pb, and Pb-Pb collisions as a function of the pseudorapidity and azimuthal angle difference, Δη and Δφ respectively. These correlations are studied using the balance function that probes the charge creation time and the development of collectivity in the produced system. The dependence of the balance function on the event multiplicity as well as on the trigger and associated particle transverse momentum (pT) in pp, p-Pb, and Pb-Pb collisions at sNN−−−√=7, 5.02, and 2.76 TeV, respectively, are presented. In the low transverse mome ...Daha fazlası

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Measurement of prompt D0, D+, D∗+, and D+s production in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The measurement of the production of prompt D0, D+, D∗+, and D+s mesons in proton–lead (p–Pb) collisions at the centre-of-mass energy per nucleon pair of √sNN = 5.02 TeV, with an integrated luminosity of 292 ± 11 μb−1, are reported. Differential pro- duction cross sections are measured at mid-rapidity (−0.96 < ycms < 0.04) as a function of transverse momentum (pT) in the intervals 0 < pT < 36 GeV/c for D0, 1 < pT < 36 GeV/c for D+ and D∗+, and 2 < pT < 24GeV/c for D+s mesons. For each species, the nuclear modification factor RpPb is calculated as a function of pT using a proton-proton (pp) ref ...Daha fazlası

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Λ+c production in pp collisions at √s = 7 TeV and in p-Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The pT-differential production cross section of prompt Λ+c charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at √s = 7 TeV and in p-Pb collisions at √sNN = 5.02 TeV at midrapidity. The Λ+c and Λ–c were reconstructed in the hadronic decay modes Λ+c → pK−π+, Λ+c → pK0S and in the semileptonic channel Λ+c → e+νeΛ (and charge conjugates). The measured values of the Λ+c /D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously ...Daha fazlası

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Differential studies of inclusive J/ψ and ψ(2S) production at forward rapidity in Pb-Pb collisions at √sNN =2.76TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of J/ψ and ψ(2S) was studied with the ALICE detector in Pb-Pb collisions at the LHC. The measurement was performed at forward rapidity (2.5 < y < 4) down to zero transverse momentum (pt) in the dimuon decay channel. Inclusive J/ψ yields were extracted in different centrality classes and the centrality dependence of the average pt is presented. The J/ψ suppression, quantified with the nuclear modification factor (RAA), was measured as a function of centrality, transverse momentum and rapidity. Comparisons with similar measurements at lower collision energy and theoretical models ...Daha fazlası

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Production of muons from heavy-flavour hadron decays in pp collisions at √s = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Production cross sections of muons from semi-leptonic decays of charm and beauty hadrons were measured at forward rapidity (2.5 < y < 4) in proton-proton (pp) collisions at a centre-of-mass energy s = 5.02 TeV with the ALICE detector at the CERN LHC. The results were obtained in an extended transverse momentum interval, 2 < pT < 20 GeV/c, and with an improved precision compared to previous measurements performed in the same rapidity interval at centre-of-mass energies The pT- and y-differential production cross sections as well as the pT-differential production cross section ratios between dif ...Daha fazlası

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