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Bulunan: 23 Adet 0.001 sn
Yayın Tarihi : 2019 ✕Konu Başlıkları : ALICE ✕
Koleksiyon [3]
İlgili Araştırmacılar [1]
Ambargo Durumu [1]
Tam Metin [1]
Yayın Türü [1]
Yazar/lar [2]
Atıf Dizini [2]
Konu Başlıkları [20]
Yayıncı [1]
Yayın Tarihi [1]
Yayın Dili [2]
Erişime Açık

Two-particle differential transverse momentum and number density correlations in p-Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV at the CERN Large Hadron Collider

KARASU UYSAL, Ayben | ALICE Collaboration

We present measurements of two-particle differential number correlation functions R2 and transverse momen- tum correlation functions P2, obtained from p-Pb collisions at 5.02 TeV and Pb-Pb collisions at 2.76 TeV. The results are obtained by using charged particles in the pseudorapidity range |η| < 1.0 and transverse momentum range 0.2 < pT < 2.0 GeV/c as a function of pair separation in pseudorapidity, |η|, azimuthal angle φ, and for several charged-particle multiplicity classes. Measurements are carried out for like-sign and unlike-sign charged-particle pairs separately and combined to obtain ...Daha fazlası

Makale 2019 8 Görüntülenme
Erişime Açık

Measurement of the production of charm jets tagged with D0 mesons in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of charm jets in proton-proton collisions at a center-of-mass √ energy of s = 7 TeV was measured with the ALICE detector at the CERN Large Hadron Collider. The measurement is based on a data sample corresponding to a total inte- grated luminosity of 6.23nb−1, collected using a minimum-bias trigger. Charm jets are identified by the presence of a D0 meson among their constituents. The D0 mesons are 0−+0 reconstructed from their hadronic decay D →K π . The D -meson tagged jets are reconstructed using tracks of charged particles (track-based jets) with the anti-kT algo- rithm in the ...Daha fazlası

Makale 2019 5 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

Coherent J/ψ photo production at forward rapidity in ultra-peripheral Pb–Pb collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The ALICE collaboration performed the first rapidity-differential measurement of coherent J/ψ photoproduction in ultra-peripheral Pb-Pb collisions at a center-of-mass energy sNN‾‾‾‾√ = 5.02 TeV. The J/ψ is detected via its dimuon decay in the forward rapidity region (−4.0

Makale 2019 7 Görüntülenme
Erişime Açık

Measurement of jet radial profiles in Pb–Pb collisions at sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The jet radial structure and particle transverse momentum (pT) composition within jets are presented in centrality-selected Pb–Pb collisions at √sNN = 2.76 TeV. Track-based jets, which are also called charged jets, were reconstructed with a resolution parameter of R = 0.3 at midrapidity |ηch jet| < 0.6 for transverse momenta pT, ch jet = 30–120 GeV/c. Jet–hadron correlations in relative azimuth and pseudorapidity space (φ,η) are measured to study the distribution of the associated particles around the jet axis for different pT,assoc-ranges between 1 and 20 GeV/c. The data in Pb–Pb collisions a ...Daha fazlası

Makale 2019 11 Görüntülenme
Erişime Açık

Study of the Λ–Λ interaction with femtoscopy correlations in and p–Pb collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

This work presents new constraints on the existence and the binding energy of a possible Λ-Λ bound state, the H-dibaryon, derived from Λ-Λ femtoscopic measurements by the ALICE collaboration. The results are obtained from a new measurement using the femtoscopy technique in pp collisions at s√=13 TeV and p-Pb collisions at sNN‾‾‾‾√=5.02 TeV, combined with previously published results from p-Pb collisions at s√=7 TeV. The Λ-Λ scattering parameter space, spanned by the inverse scattering length f−10 and the effective range d0, is constrained by comparing the measured Λ-Λ correlation function with ...Daha fazlası

Makale 2019 13 Görüntülenme
Erişime Açık

Measurement of charged jet cross section in pp collisions at 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The cross section of jets reconstructed from charged particles is measured in the transverse momentum range of 5 < pT < 100 GeV=c in pp collisions at the center-of-mass energy of s 1⁄4 5.02 TeV with theALICE detector. The jets are reconstructed using the anti-kT algorithm with resolution parameters R 1⁄4 0.2, 0.3, 0.4, and 0.6 in the pseudorapidity range jηj < 0.9 − R. The charged jet cross sections are compared with the leading-order (LO) and to next-to-leading-order (NLO) perturbative quantum chromodynamics (pQCD) calculations. It is found that the NLO calculations agree better with the meas ...Daha fazlası

Makale 2019 4 Görüntülenme
Erişime Açık

Multiplicity dependence of light-flavor hadron production in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Comprehensive results on the production of unidentified charged particles, π±, K±, K0S, K*(892)0, p, p¯¯¯, ϕ(1020), Λ, Λ¯¯¯¯, Ξ−, Ξ¯¯¯¯+, Ω− and Ω¯¯¯¯+ hadrons in proton-proton (pp) collisions at s√ = 7 TeV at midrapidity (|y|

Makale 2019 3 Görüntülenme
Erişime Açık

Measurement of the inclusive isolated photon production cross section in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production cross section of inclusive iso- lated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at a centre-of-momentum energy of √s = 7 TeV. The measurement is performed with the electromagnetic calorimeter EMCal and the central track- ing detectors, covering a range of |η| < 0.27 in pseudora- pidity and a transverse momentum range of 10 < pTγ < 60 GeV/c. The result extends the pT coverage of previously published results of the ATLAS and CMS experiments at the same collision energy to smaller pT. The measurement is compared to next-to-leading order pert ...Daha fazlası

Makale 2019 16 Görüntülenme
Erişime Açık

Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Measurements of anisotropic flow coefficients (vn) and their cross-correlations using two- and multiparticle cumulant methods are reported in collisions of pp at √ s = 13 TeV, p–Pb at √sNN = 5.02 TeV, Xe–Xe at √sNN = 5.44 TeV, and Pb–Pb at √sNN = 5.02 TeV recorded with the ALICE detector. The multiplicity dependence of vn is studied in a very wide range from 20 to 3000 particles produced in the mid-rapidity region |η| < 0.8 for the transverse momentum range 0.2 < pT < 3.0 GeV/c. An ordering of the coefficients v2 > v3 > v4 is found in pp and p–Pb collisions, similar to that seen in large colli ...Daha fazlası

Makale 2019 4 Görüntülenme
Erişime Açık

(Anti) Hypertriton lifetime measurement in Pb–Pb collisions at sNN = 5.02 TeV via two-body decay

KARASU UYSAL, Ayben | ALICE Collaboration

Pb–Pb collisions at √sNN = 5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ = 242+34 (stat.) ± −38 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle.

Makale 2019 2 Görüntülenme
Erişime Açık

Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity pffiffiffiffiffiffiffi (jηj < 0.8) are measured in p-Pb collisions at sNN 1⁄4 5.02 TeV. The analysis is carried out for the 0%–20% (high) and 60%–100% (low) multiplicity ranges. The jet contribution in the correlation distribution from high-multiplicity events is removed by subtracting the distribution from low-multiplicity events. An azimuthal modulation remains after removing the jet contribution, similar to previous observations in two-particle angular correlation measurements for light-flavor had ...Daha fazlası

Makale 2019 4 Görüntülenme
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