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Bulunan: 28 Adet 0.000 sn
Yazar/lar : KARASU UYSAL, Ayben ✕Yayıncı : ELSEVIER SCIENCE BV ✕
Koleksiyon [3]
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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

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

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

Measurements of anisotropic flow and flow fluctuations in Xe–Xe and Pb–Pb collisions with ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

Anisotropic flow is a key observable to characterise the system created in heavy-ion collisions, as it is sensitive to the system's initial state, transport properties, the equation of state and freeze-out conditions. In these proceedings we present the anisotropic flow coefficients of inclusive charged particles in Pb-Pb collisions at root s(NN) = 2.76 and 5.02 TeV, and in Xe-Xe collisions at root s(NN) = 5.44 TeV. The results are reported for a wide range of particle transverse momentum within the pseudo-rapidity range vertical bar eta vertical bar < 0.8 at different collision centralities. ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 5 Görüntülenme
Erişime Açık

Energy dependence of φ(1020) production at mid-rapidity in pp collisions with ALICE at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Hadronic resonances are unique tools to investigate the interplay of re-scattering and regeneration effects during the hadronization phase in heavy-ion collisions. Measurements in small collision systems provide a necessary baseline for heavy-ion data, help to tune pQCD inspired event generators and give insight into the search for the onset of collective effects. As the phi meson has a longer lifetime compared to other resonances, it is expected that its production would be much less affected by regeneration and re-scattering processes. We report on measurements of phi meson production in min ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 3 Görüntülenme
Erişime Açık

Real-time data processing in the ALICE High Level Trigger at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

At the Large Hadron Collider at CERN in Geneva, Switzerland, atomic nuclei are collided at ultra-relativistic energies. Many final-state particles are produced in each collision and their properties are measured by the ALICE detector. The detector signals induced by the produced particles are digitized leading to data rates that are in excess of 48 GB/s. The ALICE High Level Trigger (HLT) system pioneered the use of FPGA- and GPU-based algorithms to reconstruct charged-particle trajectories and reduce the data size in real time. The results of the reconstruction of the collision events, availa ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 4 Görüntülenme
Erişime Açık

Open heavy-flavour production and elliptic flow in p-Pb collisions at the LHC with ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

Measurements of open heavy flavour production in p-A collisions allow the investigation of Cold Nuclear Matter effects. In addition, they are an important tool for a complementary investigation of the long-range correlations found in small systems in the light flavour sector. In this work, production measurements of D mesons at mid-rapidity in p-Pb collisions at root S-NN = 5.02 TeV are reported. Production yields are also reported for the heavy-flavour hadron decay electrons at central rapidity at root(SNN) = 5.02 and 8.16 TeV. The elliptic flow (nu(2)) of heavy-flavour hadron decay electrons ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 3 Görüntülenme
Erişime Açık

Non-linear flow modes of identified particles in Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector

KARASU UYSAL, Ayben | ALICE Collaboration

http://hdl.handle.net/20.500.12498/4450

Makale 2019 ELSEVIER SCIENCE BV 8 Görüntülenme
Erişime Açık

Elliptic flow of identified hadrons in small collisional systems measured with ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

Recent observations of long-range multi-particle azimuthal correlations in p-Pb and high multiplicity pp collisions provided new insights into collision dynamics and opened a possibility to study collective effects in these small systems. New measurements of p(T)-differential elliptic flow (v(2)) coefficient for inclusive charged hadrons as well as a variety of identified particle species in p-Pb collisions at root s(NN) = 5.02 TeV are presented. The data was collected by ALICE during the LHC Run 2 data taking. Besides high precision measurements of v(2)(P-T) for pi(+/-), K-+/- and p((p) over ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 9 Görüntülenme
Erişime Açık

Multiplicity dependence of strangeness and hadronic resonance production in pp and p-Pb collisions with ALICE at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

One of the key results of the LHC Run 1 was the observation of an enhanced production of strange particles in high multiplicity pp and p-Pb collisions at,root s(NN) 7 and 5.02 TeV, respectively. The strangeness enhancement is investigated by measuring the evolution with multiplicity of single-strange and multi-strange baryon production relative to non-strange particles. A smooth increase of strange particle yields relative to the non-strange ones with event multiplicity has been observed in such systems. We report the latest results on multiplicity dependence of strange and multi-strange hadro ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 5 Görüntülenme
Erişime Açık

Balance functions of (un)identified hadrons in Pb-Pb, p-Pb, and pp collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

In ultrarelativistic heavy-ion collisions, correlations of particles with opposite quantum numbers provide insight into quark production mechanisms and time scales, collective motion, and re-scattering in the hadronic phase. The longitudinal and azimuthal widths of balance functions for charged kaons and charged pions are used to examine the two-wave quark production model proposed to explain quark-antiquark production within the QGP, which predicts a large increase in up and down quark pairs relative to strange quark pairs around the time of hadronization. Balance functions are also analyzed ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 2 Görüntülenme
Erişime Açık

ALICE measurements of flow coefficients and their correlations in small (pp and p-Pb) and large (Xe-Xe and Pb-Pb) collision systems

KARASU UYSAL, Ayben | ALICE Collaboration

Many observables which are used as a signature of the collective effects in heavy-ion collisions when measured in high multiplicity pp and pA interactions reveal a very similar behaviour. We will present first measurements of different order flow coefficients and their magnitude correlations for data collected by ALICE during the LHC Run 2 operation, which includes pp collisions at root s = 13 TeV, p-Pb at root s(NN)= 5.02 TeV, Xe-Xe at root sNN = 5.44 TeV and Pb-Pb collisions at root s(NN) = 5.02 TeV. Such a broad spectrum of colliding systems with different energies and wide range of multipl ...Daha fazlası

Makale 2019 ELSEVIER SCIENCE BV 3 Görüntülenme
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