Erişime Açık

Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at √ sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

In this paper, the first femtoscopic analysis of pion–kaon correlations at the LHC is reported. The analysis was performed on the Pb–Pb collision data at √sNN = 2.76 TeV recorded with the ALICE detector. The non-identical particle correlations probe the spatio-temporal separation between sources of different particle species as well as the average source size of the emitting system. The sizes of the pion and kaon sources increase with centrality, and pions are emitted closer to the centre of the system and/or later than kaons. This is naturally expected in a system with strong radial flow and ...Daha fazlası

Makale 2020 9 Görüntülenme

Erişime Açık

Unveiling the strong interaction among hadrons at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

One of the key challenges for nuclear physics today is to understand from frst principles the efective interaction between hadrons with diferent quark content. First successes have been achieved using techniques that solve the dynamics of quarks and gluons on discrete space-time lattices1,2 . Experimentally, the dynamics of the strong interaction have been studied by scattering hadrons of each other. Such scattering experiments are difcult or impossible for unstable hadrons3–6 and so high-quality measurements exist only for hadrons containing up and down quarks7 . Here we demonstrate that meas ...Daha fazlası

Diğer 2020 5 Görüntülenme

Erişime Açık

Underlying event properties in pp collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at midrapidity (|η| < 0.8) in pp collisions at √s = 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum (pleading) in the event. Charged-particle number-densities T and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatte ...Daha fazlası

Diğer 2020 9 Görüntülenme

Erişime Açık

K∗(892)0 and φ(1020) production at midrapidity in pp collisions at √s = 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of K∗(892)0 and φ(1020) in pp collisions at √s = 8 TeV was measured by using Run 1 data collected by the ALICE collaboration at the CERN Large Hadron Collider (LHC). The pT-differential yields d2N/dyd pT in the range 0 < pT < 20 GeV/c for K∗0 and 0.4 < pT < 16 GeV/c for φ have been measured at midrapidity, |y| < 0.5. Moreover, improved measurements of the K∗0 (892) and φ(1020) at √s = 7 TeV are presented. The collision energy dependence of pT distributions, pT-integrated yields, and particle ratios in inelastic pp collisions are examined. The results are also compared with diffe ...Daha fazlası

Diğer 2020 11 Görüntülenme

Erişime Açık

Multiplicity dependence of K*(892)0 and φ(1020) production in pp collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The striking similarities that have been observed between high-multiplicity proton-proton (pp) collisions and heavy-ion collisions can be explored through multiplicity-differential measurements of identified hadrons in pp collisions. With these measurements, it is possible to study mechanisms such as collective flow that determine the shapes of hadron transverse momentum (pT) spectra, to search for possible modifications of the yields of short-lived hadronic resonances due to scattering effects in an extended hadron-gas phase, and to investigate different explanations provided by phenomenologi ...Daha fazlası

Diğer 2020 8 Görüntülenme

Erişime Açık

Azimuthal correlations of prompt D mesons with charged particles in pp and p–Pb collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in pp collisions at √s = 5.02 TeV and p–Pb collisions at √sNN = 5.02 TeV with the ALICE detector at the LHC is reported. The D0, D+, and D∗+ mesons, together with their charge conjugates, were reconstructed at midrapidity in the transverse momentum interval 3 < pT < 24 GeV/c and correlated with charged particles having pT > 0.3 GeV/c and pseudorapidity |η| < 0.8. The properties of the correlation peaks appearing in the near- and away-side regions (for ϕ ≈ 0 and ϕ ≈ π, respectively) were extracted vi ...Daha fazlası

Diğer 2020 3 Görüntülenme

Measurement of the Low-Energy Antideuteron Inelastic Cross Section

KARASU UYSAL, Ayben | ALICE Collaboration

In this Letter, we report the first measurement of the inelastic cross section for antideuteron-nucleus interactions at low particle momenta, covering a range of 0.3 ≤ p < 4 GeV=c. The measurement is carried out using p-Pb collisions at a center-of-mass energy per nucleon–nucleon pair of ffiffiffiffiffiffiffi sNN p ¼ 5.02 TeV, recorded with the ALICE detector at the CERN LHC and utilizing the detector material as an absorber for antideuterons and antiprotons. The extracted raw primary antiparticle-to-particle ratios are compared to the results from detailed ALICE simulations based on the GEANT ...Daha fazlası

Diğer 2020 13 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

Diğer 2020 4 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

Diğer 2020 2 Görüntülenme

Erişime Açık

Measurement of electrons from heavy-flavour hadron decays as a function of multiplicity in p-Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The multiplicity dependence of electron production from heavy-flavour hadron decays as a function of transverse momentum was measured in p-Pb collisions at √sNN = 5.02 TeV using the ALICE detector at the LHC. The measurement was performed in the centre-of-mass rapidity interval −1.07 < ycms < 0.14 and transverse momentum interval 2 < pT < 16GeV/c. The multiplicity dependence of the production of electrons from heavy-flavour hadron decays was studied by comparing the pT spectra measured for differ- ent multiplicity classes with those measured in pp collisions (QpPb) and in peripheral p-Pb colli ...Daha fazlası

Diğer 2020 5 Görüntülenme

Erişime Açık

Measurement of strange baryon–antibaryon interactions with femtoscopic correlations

KARASU UYSAL, Ayben | ALICE Collaboration

Two-particle correlation functions were measured for pp, panti-p, pLamba, and LambdaAntiLambda pairs in Pb–Pb collisions at √sNN = 2.76 TeV and √sNN = 5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined pantip and pantilambda pairs and, for the first time, for lambdaantilambda pairs. Effective averaged scattering parameters for heavier baryon–antibaryon pairs, not measured directly, are also provided. The results reveal simila ...Daha fazlası

Diğer 2020 8 Görüntülenme

Erişime Açık

Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Experimental results are presented on event-by-event net-proton fluctuation measurements in Pb–Pb collisions at √sNN = 2.76 TeV, recorded by the ALICE detector at the CERN LHC. These measurements have as their ultimate goal an experimental test of Lattice QCD (LQCD) predictions on second and higher order cumulants of net-baryon distributions to search for critical behavior near the QCD phase boundary. Before confronting them with LQCD predictions, account has to be taken of correlations stemming from baryon number conservation as well as fluctuations of participating nucleons. Both effects inf ...Daha fazlası

Diğer 2020 12 Görüntülenme

Detaylı Arama

Filtreler

Koleksiyon [3]

İlgili Araştırmacılar [1]

Ambargo Durumu [1]

Tam Metin [1]

Yayın Türü [2]

Yazar/lar [2]

Atıf Dizini [2]

Konu Başlıkları [1]

Yayıncı [1]

Yayın Tarihi [1]

Yayın Dili [1]

Pion–kaon femtoscopy and the lifetime of the hadronic phase in Pb−Pb collisions at √ sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Unveiling the strong interaction among hadrons at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Underlying event properties in pp collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

K∗(892)0 and φ(1020) production at midrapidity in pp collisions at √s = 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Multiplicity dependence of K*(892)0 and φ(1020) production in pp collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Azimuthal correlations of prompt D mesons with charged particles in pp and p–Pb collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of the Low-Energy Antideuteron Inelastic Cross Section

KARASU UYSAL, Ayben | ALICE Collaboration

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

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

Measurement of electrons from heavy-flavour hadron decays as a function of multiplicity in p-Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of strange baryon–antibaryon interactions with femtoscopic correlations

KARASU UYSAL, Ayben | ALICE Collaboration

Global baryon number conservation encoded in net-proton fluctuations measured in Pb–Pb collisions at sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration