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Bulunan: 19 Adet 0.000 sn
Yayın Dili : en ✕Yazar/lar : KARASU UYSAL, Ayben ✕
Koleksiyon [3]
İlgili Araştırmacılar [2]
Ambargo Durumu [1]
Tam Metin [2]
Yayın Türü [2]
Yazar/lar [4]
Atıf Dizini [2]
Konu Başlıkları [13]
Yayıncı [7]
Yayın Tarihi [4]
Yayın Dili [1]
Erişime Açık

Dielectron measurements in pp and Pb-Pb colllisions with ALICE at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

The production of low-mass dielectrons is one of the most promising tools for the investigation of chiral symmetry restoration and thermal radiation from the QGP created in heavy-ion collisions. To single out the signal characteristics of the QGP, it is crucial to understand the primordial e+e− pair production in vacuum, i.e. in inelastic proton-proton (pp) collisions. Low-mass dielectrons have been measured with ALICE at the LHC in pp collisions at √s = 7 and 13 TeV, and in Pb–Pb collisions at √sNN = 2.76 TeV. An overview of the results on dielectron production is presented, together with the ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 6 Görüntülenme
Erişime Açık

Exploring the Phase Space of Jet Splittings at ALICE using Grooming and Recursive Techniques

KARASU UYSAL, Ayben | ALICE Collaboration

Hard splittings in the evolution of a hard scattered parton may be modified by the presence of a dense strongly interacting medium. Grooming procedures can be used to isolate such hard components of a jet and allows one to focus on the two subjets resulting from a sufficiently hard partonic splitting. Measurements of the symmetry parameter (z(g)), angular separation (R-g) and number of splittings (n(SD)) of Soft Drop groomed jets are reported as measured with the ALICE Detector in pp and Pb-Pb collisions at root s = 7 TeV and root s(NN) = 2.76 TeV, respectively. The use of recursive splittings ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 3 Görüntülenme
Erişime Açık

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

Makale 2019 3 Görüntülenme
Erişime Açık

Constraining production models with light (anti-)nuclei measurements in small systems with ALICE at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

The production of deuterons and anti-deuterons in pp collisions at root s = 7 and 13 TeV has been studied as a function of charged-particle multiplicity using the ALICE detector at the LHC. The preliminary results are shown here, together with those obtained in heavy-ion collisions. They are presented by focusing the discussion on the comparison with expectations from hadron-coalescence models.

Makale 2019 ELSEVIER SCIENCE BV 4 Görüntülenme
Erişime Açık

Statistical thermal model analysis of particle production at LHC

KARASU UYSAL, Ayben | VARDAR, Necati

A successful description of the particle ratios measured in heavy-ion collisions has been achieved in the framework of thermal models. In such a way, a large number of observables can be reproduced with a small number of parameters, namely the temperature, baryo-chemical potential and a factor measuring the degree of strangeness saturation. The comparison of experimental data at and the model estimations has made possible to define the thermodynamic parameters of strongly interacting matter at chemical freeze-out temperature. The detailed study of hadron and meson production including resonanc ...Daha fazlası

Konferans Bildirisi 2016 Institute of Physics Publishing 5 Görüntülenme
Erişime Açık

Recent resonance results measured with the ALICE detector at the LHC

YALÇIN, Serpil | KARASU UYSAL, Ayben | ALICE Collaboration

Resonances are extremely short lived particles (τ ∼ 10-23 s). Due to their lifetime, they may decay, re-scatter and regenerate between chemical and kinetic freeze-outs. For this reason, they are very significant probes to understand the evolution of the medium and particle production mechanism in heavy ion collisions. Different than other particles, resonance properties such as mass, width and yield can be modified by the medium created in the relativistic collisions. Moreover, comparison of resonances produced in different collisions provide evidences about possible in medium effects and syst ...Daha fazlası

Konferans Bildirisi 2017 American Institute of Physics Inc. 7 Görüntülenme
Erişime Açık

Anomalous evolution of the near-side jet peak shape in Pb–Pb collisions at √ sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

http://hdl.handle.net/20.500.12498/4599

Makale 2017 AMER PHYSICAL SOC 5 Görüntülenme
Erişime Açık

The evolution of the near-side peak in two-particle number and transverse momentum correlations in Pb-Pb collisions from ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

Two-particle number and transverse momentum correlations are powerful tools for studying the medium produced in heavy-ion collisions. Correlations in the angular separation of pairs of hadrons can provide information on the medium transport characteristics. In particular, the transverse momentum correlations are sensitive to momentum currents, and provide information about the system life time, the shear viscosity over entropy density ratio (eta/s) and the system relaxation time (tau(pi)). Furthermore, the interaction of the jets produced in the initial stages of a collision can be studied usi ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 6 Görüntülenme
Erişime Açık

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

Makale 2019 ELSEVIER 6 Görüntülenme
Erişime Açık

Exploring jet profiles in Pb-Pb collisions at 5.02 TeV with the ALICE detector

KARASU UYSAL, Ayben | ALICE Collaboration

In this contribution, we present measurements of inclusive jet production with the ALICE detector in Pb-Pb collisions at root s(NN) = 5.02 TeV. Production cross sections of charged particle jets and fully reconstructed jets are measured with jet resolution parameters R = 0.2 and 0.3. To quantify the medium induced parton energy loss, jet nuclear modification factors (R-AA) are measured by utilizing POWHEG+Pythia8 predictions as reference cross section in pp collisions. We also calculate the ratio of jet production cross sections for jets reconstructed with different cone radii to explore the j ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 3 Görüntülenme
Erişime Açık

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.

Makale 2019 ELSEVIER 7 Görüntülenme
Erişime Açık

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.

Makale 2019 ELSEVIER SCIENCE BV 2 Görüntülenme
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