Erişime Açık

Measuring K0S K± interactions using pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present the first measurements of femtoscopic correlations between the K0 and K± particles in pp √S collisions at s = 7 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for K0SK− are found to be equal within the experimental uncertainties to those for K0K+. Results of the present study are compared with those S√ from identical-kaon femtoscopic studies also performed with pp collisions at s = 7 TeV by ALICE a ...Daha fazlası

Makale 2018 6 Görüntülenme

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

Measurement of the production of high-pT electrons from heavy-flavour hadron decays in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Electrons from heavy-flavour hadron decays (charm and beauty) were measured with the ALICE detector in Pb–Pb collisions at a centre-of-mass of energy √sNN = 2.76 TeV. The transverse momentum (pT) differential production yields at mid-rapidity were used to calculate the nuclear modification factor RAA in the interval 3 < pT < 18 GeV/c. The RAA shows a strong suppression compared to binary scaling of pp collisions at the same energy (up to a factor of 4) in the 10% most central Pb–Pb collisions. There is a centrality trend of suppression, and a weaker suppression (down to a factor of 2) in semi- ...Daha fazlası

Makale 2017 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

Production of charged pions, kaons and protons at large transverse momenta in pp and Pb–Pb collisions at 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Transverse momentum spectra of π±, K± and p(p ̄) up to pT = 20 GeV/c at mid-rapidity in pp, peripheral (60–80%) and central (0–5%) Pb–Pb collisions at √sNN = 2.76 TeV have been measured using the ALICE detector at the Large Hadron Collider. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT ≈ 3 GeV/c in central Pb–Pb collisions. Below the peak, pT < 3 GeV/c, both ratios are in good agreement with hydrodynamical calculations, suggesting that the peak itself is dominantly the result of radial flow rather than anomalous hadronization processes. For pT > 10 GeV/c partic ...Daha fazlası

Makale 2014 7 Görüntülenme

Erişime Açık

3ΛH and 3Λ¯ production in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of the hypertriton nuclei 3ΛH and 3Λ¯ has been measured for the first time in Pb–Pb collisions at √sNN = 2.76 TeV with the ALICE experiment at LHC. The pT-integrated 3 !H yield in one unity of rapidity, dN/dy × B.R. ! 3 !H→3He,π−" = (3.86 ± 0.77(stat.) ± 0.68(syst.)) × 10−5 in the 0–10% most central collisions, is consistent with the predictions from a statistical thermal model using the same temperature as for the light hadrons. The coalescence parameter B3 shows a dependence on the transverse momentum, similar to the B2 of deuterons and the B3 of 3He nuclei. The ratio of yield ...Daha fazlası

Makale 2016 8 Görüntülenme

Erişime Açık

Measurement of an Excess in the Yield of J/ψ at Very Low pT in Pb–Pb Collisions at sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report on the first measurement of an excess in the yield of J=ψ at very low transverse momentum (pT < 0.3 GeV=c) in peripheral hadronic Pb-Pb collisions at sNN 1⁄4 2.76 TeV, performed by ALICE at the CERN LHC. Remarkably, the measured nuclear modification factor of J=ψ in the rapidity range 2.5 < y < 4 reaches about 7 (2) in the pT range 0–0.3 GeV=c in the 70%–90% (50%–70%) centrality class. The J=ψ production cross section associated with the observed excess is obtained under the hypothesis that coherent photoproduction of J=ψ is the underlying physics mechanism. If confirmed, the observa ...Daha fazlası

Makale 2016 7 Görüntülenme

Erişime Açık

Measurement of the inclusive J/ψ polarization at forward rapidity in pp collisions at √s = 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report on the measurement of the inclusive J/ψ polarization parameters in pp collisions at a center of mass energy √s = 8 TeV with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.23 pb−1. J/ψ resonances are reconstructed in their di-muon decay channel in the rapidity interval 2.5 < y < 4.0 and over the transverse-momentum interval 2 < pT < 15 GeV/c. The three polarization param- eters (λθ , λφ , λθ φ ) are measured as a function of pT both in the helicity and Collins-Soper reference frames. The mea- sured J/ψ polarization ...Daha fazlası

Makale 2018 8 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

Charged jet cross sections and properties in proton-proton collisions at root s=7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The differential charged jet cross sections, jet fragmentation distributions, and jet shapes are measured in pffiffi minimum bias proton-proton collisions at center-of-mass energy s 1⁄4 7 TeV using the ALICE detector at the LHC. Jets are reconstructed from charged particle momenta in the midrapidity region using the sequential recombination kT and anti-kT as well as the SISCone jet finding algorithms with several resolution parameters in the range R 1⁄4 0.2–0.6. Differential jet production cross sections measured with the three jet finders are in agreement in the transverse momentum (p ) inter ...Daha fazlası

Makale 2015 7 Görüntülenme

Erişime Açık

J/ψ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The inclusive J/ψ production has been studied in Pb–Pb and pp collisions at the centre-of-mass energy per nucleon pair √sNN = 5.02 TeV, using the ALICE detector at the CERN LHC. The J/ψ meson is reconstructed, in the centre-of-mass rapidity interval 2.5 < y < 4 and in the transverse-momentum range pT < 12 GeV/c, via its decay to a muon pair. In this Letter, we present results on the inclusive J/ψ cross section in pp collisions at √s = 5.02 TeV and on the nuclear modification factor RAA. The latter is presented as a function of the centrality of the collision and, for central collisions, as a f ...Daha fazlası

Makale 2017 6 Görüntülenme

Detaylı Arama

Filtreler

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 [8]

Yayın Dili [2]

Measuring K0S K± interactions using pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

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

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

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of the production of high-pT electrons from heavy-flavour hadron decays in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

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

KARASU UYSAL, Ayben | ALICE Collaboration

Production of charged pions, kaons and protons at large transverse momenta in pp and Pb–Pb collisions at 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

3ΛH and 3Λ¯ production in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of an Excess in the Yield of J/ψ at Very Low pT in Pb–Pb Collisions at sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of the inclusive J/ψ polarization at forward rapidity in pp collisions at √s = 8 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

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

KARASU UYSAL, Ayben | ALICE Collaboration

Charged jet cross sections and properties in proton-proton collisions at root s=7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

J/ψ suppression at forward rapidity in Pb–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration