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Bulunan: 214 Adet 0.001 sn
Yayın Türü : Makale ✕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 [9]
Yayın Dili [1]
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

Pseudorapidity and transverse-momentum distributions of charged particles in proton–proton collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The pseudorapidity (η) and transverse-momentum (pT) distributions of charged particles produced in proton–proton collisions are measured at the centre-of-mass energy √s = 13 TeV. The pseudorapidity distribution in |η| < 1.8 is reported for inelastic events and for events with at least one charged particle in |η| < 1. The pseudorapidity density of charged particles produced in the pseudorapidity region |η| < 0.5 is 5.31 ± 0.18 and 6.46 ± 0.19 for the two event classes, respectively. The transverse-momentum distribution of charged particles is measured in the range 0.15 < pT < 20 GeV/c and |η| < ...Daha fazlası

Makale 2016 4 Görüntülenme
Erişime Açık

Measurement of prompt D-meson production in p–Pb collisions at √ sNN = 5 .02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The pT-differential production cross sections of the prompt charmed mesons D0, Dþ, D þ, and Dþs and center-of-mass energy sNN 1⁄4 5.02 TeV with the ALICE detector at the LHC. The nuclear modification factor RpPb, quantifying the D-meson yield in p-Pb collisions relative to the yield in pp collisions scaled by the number of binary nucleon-nucleon collisions, is compatible within the 15%–20% uncertainties with unity in the transverse momentum interval 1 < pT < 24 GeV=c. No significant difference among the RpPb of the four D-meson species is observed. The results are described within uncertaintie ...Daha fazlası

Makale 2014 8 Görüntülenme
Erişime Açık

Transverse momentum dependence of inclusive primary charged-particle production in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The transverse momentum ( pT ) distribution of primary charged particles is measured at midrapidity in minimum-bias p–Pb collisions at √sNN = 5.02 TeV with the ALICE detector at the LHC in the range 0.15 < pT < 50 GeV/c. The spectra are compared to the expectation based on binary collision scaling of particle production in pp colli- sions, leading to a nuclear modification factor consistent with unity for pT larger than 2 GeV/c, with a weak indication of a Cronin-like enhancement for pT around 4 GeV/c. The mea- surement is compared to theoretical calculations and to data in Pb–Pb collisions at ...Daha fazlası

Makale 2014 5 Görüntülenme
Erişime Açık

Centrality, rapidity and transverse momentum dependence of J/ψ suppression in Pb–Pb collisions at sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

he inclusive J/ψ nuclear modification factor (RAA) in Pb–Pb collisions at √sNN = 2.76 TeV has been measured by ALICE as a function of centrality in the e+e− decay channel at mid-rapidity (|y| < 0.8) and as a function of centrality, transverse momentum and rapidity in the μ+μ− decay channel at forward-rapidity (2.5 < y < 4). The J/ψ yields measured in Pb–Pb are suppressed compared to those in pp collisions scaled by the number of binary collisions. The RAA integrated over a centrality range corresponding to 90% of the inelastic Pb–Pb cross section is 0.72 ± 0.06(stat.) ± 0.10(syst.) at mid-rapi ...Daha fazlası

Makale 2014 2 Görüntülenme
Erişime Açık

J/ψ production and nuclear effects in p-Pb collisions at √sNN=5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Inclusive J/ψ production has been studied with the ALICE detector in p-Pb collisions at the nucleon–nucleon center of mass energy √sNN = 5.02TeV at the CERN LHC. The measurement is performed in the center of mass rapidity domains 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum, studying the μ+μ− decay mode. In this paper, the J/ψ production cross section and the nuclear modification factor RpPb for the rapidities under study are presented. While at forward rapidity, corresponding to the proton direction, a suppression of the J/ψ yield with respect to binary-scaled ...Daha fazlası

Makale 2014 2 Görüntülenme
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

Measurement of electrons from semileptonic heavy-flavor hadron decays in p p collisions at √ s = 2.76     TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The pT-differential production cross section of electrons from semileptonic decays of heavy-flavor hadrons has been measured at midrapidity in proton-proton collisions at s 1⁄4 2.76 TeV in the transverse momentum range 0.5 < pT < 12 GeV=c with the ALICE detector at the LHC. The analysis was performed using minimum bias events and events triggered by the electromagnetic calorimeter. Predictions from perturbative QCD calculations agree with the data within the theoretical and experimental uncertainties.

Makale 2015 6 Görüntülenme
Erişime Açık

Production of Σ(1385)± and Ξ(1530)0 in proton-proton collisions at s√= 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of the strange and double-strange baryon resonances (Σ(1385)±, Ξ(1530)0) has been measured at mid-rapidity (|y|

Makale 2015 4 Görüntülenme
Erişime Açık

Measurement of pion, kaon and proton production in proton–proton collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The measurement of primary π ± , K ± , p and p production at mid-rapidity (|y| < 0.5) in proton–proton col- lisions at √s = 7 TeV performed with a large ion collider experiment at the large hadron collider (LHC) is reported. Particle identification is performed using the specific ioni- sation energy-loss and time-of-flight information, the ring- imaging Cherenkov technique and the kink-topology identifi- cation of weak decays of charged kaons. Transverse momen- tum spectra are measured from 0.1 up to 3 GeV/c for pions, from 0.2 up to 6 GeV/c for kaons and from 0.3 up to 6 GeV/c for protons. Th ...Daha fazlası

Makale 2015 9 Görüntülenme
Erişime Açık

Two- and three-pion quantum statistics correlations in Pb-Pb collisions at √ s N N = 2.76 TeV at the CERN Large Hadron Collider

KARASU UYSAL, Ayben | ALICE Collaboration

Correlations induced by quantum statistics are sensitive to the spatiotemporal extent as well as dynamics of particle-emitting sources in heavy-ion collisions. In addition, such correlations can be used to search for the presence of a coherent component of pion production. Two- and three-pion correlations of same and mixed charge are measured at low relative momentum to estimate the coherent fraction of charged pions in Pb-Pb collisions at √sNN = 2.76 TeV at the CERN Large Hadron Collider with ALICE. The genuine three-pion quantum statistics correlation is found to be suppressed relative to th ...Daha fazlası

Makale 2014 7 Görüntülenme
Erişime Açık

Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report the measurement of a new observable of jet quenching in central Pb-Pb collisions at √sNN = 2.76 TeV, based on the semi-inclusive rate of charged jets recoiling from a high transverse momentum (high-pT) charged hadron trigger. Jets are measured using collinear-safe jet reconstruction with infrared cutoff for jet constituents of 0.15 GeV, for jet resolution parameters R = 0.2, 0.4 and 0.5. Underlying event background is corrected at the event-ensemble level, without imposing bias on the jet population. Recoil jet spectra are reported in the range 20 < pch < 100 GeV. Reference distribut ...Daha fazlası

Makale 2015 7 Görüntülenme
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