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Filtreler
Filtreler
Bulunan: 225 Adet 0.002 sn
Yayın Dili : eng ✕Yazar/lar : ALICE Collaboration ✕
Koleksiyon [3]
İlgili Araştırmacılar [1]
Ambargo Durumu [1]
Tam Metin [1]
Yayın Türü [1]
Yazar/lar [2]
Atıf Dizini [3]
Konu Başlıkları [20]
Yayıncı [10]
Yayın Tarihi [10]
Yayın Dili [1]
Erişime Açık

Υ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Inclusive Υ(1S) and Υ(2S) production have been measured in Pb–Pb collisions at the centre-of-mass energy per nucleon–nucleon pair √sNN = 5.02 TeV, using the ALICE detector at the CERN LHC. The Υ mesons are reconstructed in the centre-of-mass rapidity interval 2.5 < y < 4 and in the transverse- momentum range pT < 15 GeV/c, via their decays to muon pairs. In this Letter, we present results on the inclusive Υ(1S) nuclear modification factor RAA as a function of collision centrality, transverse momentum and rapidity. The Υ(1S) and Υ(2S) RAA, integrated over the centrality range 0–90%, are 0.37± 0 ...Daha fazlası

Makale 2019 9 Görüntülenme
Erişime Açık

φ meson production at forward rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

φ meson measurements provide insight into strangeness production, which is one of the key observables for the hot medium formed in high-energy heavy-ion colli- sions. ALICE measured φ production through its decay in muon pairs in Pb–Pb collisions at √sNN = 2.76 TeV in the intermediate transverse momentum range 2 < pT < 5 GeV/c and in the rapidity interval 2.5 < y < 4. The φ yield was measured as a function of the transverse momen- tum and collision centrality. The nuclear modification factor was obtained as a function of the average number of par- ticipating nucleons. Results were compared wit ...Daha fazlası

Makale 2018 8 Görüntülenme
Erişime Açık

Measurement of beauty and charm production in pp collisions at √s = 5.02 TeV via non-prompt and prompt D mesons

KARASU UYSAL, Ayben | ALICE Collaboration

The pT-differential production cross sections of prompt and non-prompt (produced in beauty-hadron decays) D mesons were measured by the ALICE experiment at midrapidity (|y|

Makale 2021 3 Görüntülenme
Erişime Açık

Inclusive heavy-flavour production at central and forward rapidity in Xe–Xe collisions at √sNN = 5.44 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The first measurements of the production of muons and electrons from heavy-flavour hadron decays in Xe–Xe collisions at √sNN = 5.44 TeV, using the ALICE detector at the LHC, are reported. The measurement of the nuclear modification factor RAA is performed as a function of transverse momentum pT in several centrality classes at forward rapidity (2.5 < y < 4) and midrapidity (|y| < 0.8) for muons and electrons from heavy-flavour hadron decays, respectively. A suppression by a factor up to about 2.5 compared to the binary-scaled pp reference is observed in central collisions at both central and f ...Daha fazlası

Makale 2021 6 Görüntülenme
Erişime Açık

Production of pions, kaons, (anti-)protons and φ mesons in Xe–Xe collisions at √sNN = 5.44 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The first measurement of the production of pions, kaons, (anti-)protons and ϕ mesons at midrapidity in Xe-Xe collisions at sNN‾‾‾‾√=5.44 TeV is presented. Transverse momentum (pT) spectra and pT-integrated yields are extracted in several centrality intervals bridging from p-Pb to mid-central Pb-Pb collisions in terms of final-state multiplicity. The study of Xe-Xe and Pb-Pb collisions allows systems at similar charged-particle multiplicities but with different initial geometrical eccentricities to be investigated. A detailed comparison of the spectral shapes in the two systems reveals an oppos ...Daha fazlası

Makale 2021 2 Görüntülenme
Erişime Açık

Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at sNN = 2.76 and 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Systematic studies of charge-dependent two- and three-particle correlations in Pb-Pb collisions at √ sNN = 2.76 and 5.02 TeV used to probe the Chiral Magnetic Effect (CME) are presented. These measurements are performed for charged particles in the pseudorapidity (η) and transverse momentum (pT) ranges |η| < 0.8 and 0.2 < pT < 5 GeV/c. A significant charge-dependent signal that becomes more pronounced for peripheral collisions is reported for the CME-sensitive correlators γ1,1 = hcos(ϕα + ϕβ − 2Ψ2)i and γ1,−3 = hcos(ϕα − 3ϕβ + 2Ψ2)i. The results are used to estimate the contribution of backgro ...Daha fazlası

Makale 2020 4 Görüntülenme
Erişime Açık

Long- and short-range correlations and their event-scale dependence in high-multiplicity pp collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Two-particle angular correlations are measured in high-multiplicity proton-proton collisions at s√=13 TeV by the ALICE Collaboration. The yields of particle pairs at short-(Δη ∼ 0) and long-range (1.6

Makale 2021 9 Görüntülenme
Erişime Açık

Charged-particle multiplicity fluctuations in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract Measurements of event-by-event fluctuations of charged-particle multiplicities in Pb–Pb collisions at √sNN = 2.76 TeV using the ALICE detector at the CERN Large Hadron Collider (LHC) are presented in the pseudo- rapidity range |η| < 0.8 and transverse momentum 0.2 < pT < 2.0 GeV/c. The amplitude of the fluctuations is expressed in terms of the variance normalized by the mean of the multiplicity distribution. The η and pT dependences of the fluctuations and their evolution with respect to collision centrality are investigated. The multiplicity fluctuations tend to decrease from periphe ...Daha fazlası

Makale 2021 6 Görüntülenme
Erişime Açık

Υ production and nuclear modification at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of Υ mesons in Pb-Pb collisions at a centre-of-mass energy per nucleon pair sNN‾‾‾‾√ = 5 TeV is measured with the muon spectrometer of the ALICE detector at the LHC. The yields as well as the nuclear modification factors are determined in the forward rapidity region 2.5

Makale 2021 4 Görüntülenme
Erişime Açık

Multiharmonic Correlations of Different Flow Amplitudes in Pb-Pb Collisions at √ s NN = 2.76     TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The event-by-event correlations between three flow amplitudes are measured for the first time in Pb-Pb collisions, using higher-order symmetric cumulants. We find that different three-harmonic correlations develop during the collective evolution of the medium when compared to correlations that exist in the initial state. These new results cannot be interpreted in terms of previous lower-order flow measurements since contributions from two-harmonic correlations are explicitly removed in the new observables. A comparison to Monte Carlo simulations provides new and independent constraints for the ...Daha fazlası

Makale 2021 8 Görüntülenme
Erişime Açık

Jet fragmentation transverse momentum distributions in pp and p-Pb collisions at √s, √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Jet fragmentation transverse momentum (jT) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at sNN = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-kT algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The jT values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured jT distributions are compared with a variety of parton-shower models. Herwig and Pythi ...Daha fazlası

Makale 2021 8 Görüntülenme
Erişime Açık

Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Midrapidity production of π±, K±, and (p)p measured by the ALICE experiment at the CERN Large Hadron Collider,inPb-Pbandinelasticppcollisionsat√sNN =5.02TeV,ispresented.Theinvariantyieldsaremeasured over a wide transverse momentum (pT) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a function of the collision centrality, in the range 0–90%. The comparison of the pT-integrated particle ratios, i.e., proton-to-pion (p/π) and kaon-to-pion (K/π) ratios, with similar measurements in Pb-Pb collisions at √sNN = 2.76 TeV show no significant energy depende ...Daha fazlası

Makale 2020 2 Görüntülenme
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