Erişime Açık

Energy dependence of forward-rapidity J/ψ and ψ(2S) production in pp collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract We present results on transverse momentum (pt) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momen- tum square of inclusive J/ψ and ψ(2S) at forward rapid- ity (2.5 < y < 4) as well as ψ(2S)-to-J/ψ cross section ratios. These quantities are measured in pp collisions at cen- ter of mass energies √s = 5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A com- prehensive comparison to inclusive charmonium cross sec- tions measured at √s = 2.76, 7 ...Daha fazlası

Diğer 2017 8 Görüntülenme

Erişime Açık

J/ψ Elliptic Flow in Pb-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report a precise measurement of the J=ψ elliptic flow in Pb-Pb collisions at sNN 1⁄4 5.02 TeV with the ALICE detector at the LHC. The J=ψ mesons are reconstructed at midrapidity (jyj < 0.9) in the dielectron decay channel and at forward rapidity (2.5 < y < 4.0) in the dimuon channel, both down to zero transverse momentum. At forward rapidity, the elliptic flow v2 of the J=ψ is studied as a function of the transverse momentum and centrality. A positive v2 is observed in the transverse momentum range 2 < pT < 8 GeV=c in the three centrality classes studied and confirms with higher statistics ...Daha fazlası

Diğer 2017 4 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

Erişime Açık

K∗(892)0 and φ(1020) meson production at high transverse momentum in pp and Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of K∗(892)0 and φ(1020) mesons in proton-proton (pp) and lead-lead (Pb-Pb) collisions at √sNN = 2.76 TeV has been analyzed using a high luminosity data sample accumulated in 2011 with the ALICE detector at the Large Hadron Collider (LHC). Transverse momentum (pT) spectra have been measured for K∗(892)0 and φ(1020) mesons via their hadronic decay channels for pT up to 20 GeV/c. The measurements in pp collisions have been compared to model calculations and used to determine the nuclear modification factor and particle ratios. The K∗(892)0/K ratio exhibits significant reduction fro ...Daha fazlası

Diğer 2017 4 Görüntülenme

Erişime Açık

Kaon femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present the results of three-dimensional femtoscopic analyses for charged and neutral kaons recorded by ALICEinPb-Pbcollisionsat√sNN =2.76TeV.Femtoscopyisusedtomeasurethespace-timecharacteristicsof particle production from the effects of quantum statistics and final-state interactions in two-particle correlations. Kaon femtoscopy is an important supplement to that of pions because it allows one to distinguish between different model scenarios working equally well for pions. In particular, we compare the measured three-dimensional kaon radii with a purely hydrodynamical calculation and a mod ...Daha fazlası

Makale 2017 3 Görüntülenme

Erişime Açık

Linear and non-linear flow mode in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

he second and the third order anisotropic flow, V2 and V3, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε2 and ε3, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, Vn (n > 3), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. In this Letter we investigate the linear and non-linear modes in higher order anisotropic flow Vn for n = 4, 5, 6 with the ALICE detector at the Large Hadr ...Daha fazlası

Makale 2017 5 Görüntülenme

Erişime Açık

Enhanced production of multi-strange hadrons in high-multiplicity proton–proton collisions

KARASU UYSAL, Ayben | ALICE Collaboration

At sufficiently high temperature and energy density, nuclear matter undergoes a transition to a phase in which quarks and gluons are not confined: the quark–gluon plasma (QGP)1. Such an exotic state of strongly interacting quantum chro- modynamics matter is produced in the laboratory in heavy nuclei high-energy collisions, where an enhanced production of strange hadrons is observed2–6. Strangeness enhancement, originally proposed as a signature of QGP formation in nuc- lear collisions7 , is more pronounced for multi-strange baryons. Several effects typical of heavy-ion phenomenology have been ...Daha fazlası

Makale 2017 2 Görüntülenme

Erişime Açık

Production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV was studied for 2 < pT < 16 GeV/c with the ALICE detector at the CERN LHC. The measurement was performed at forward (p-going direction) and backward (Pb-going direction) rapidity, in the ranges of rapidity in the centre-of-mass system (cms) 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, respectively. The production cross sections and nuclear modification factors are presented as a function of transverse momentum (pT). At forward rapidity, the nuclear modification factor is compatible with unity while a ...Daha fazlası

Makale 2017 7 Görüntülenme

Erişime Açık

Evolution of the longitudinal and azimuthal structure of the near-side jet peak inPb-Pb collisions at √sNN =2.76TeV

KARASU UYSAL, Ayben | ALICE Collaboration

https://hdl.handle.net/20.500.12498/625

Makale 2017 5 Görüntülenme

Erişime Açık

Production of π0 and η mesons up to high transverse momentum in pp collisions at 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The invariant differential cross sections for inclu- sive π0 and η mesons at midrapidity were measured in pp collisions at √s = 2.76 TeV for transverse momenta 0.4

Makale 2017 4 Görüntülenme

Erişime Açık

φ-Meson production at forward rapidity in p–Pb collisions at √sNN = 5.02 TeV and in pp collisions at √s = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The first study of φ-meson production in p–Pb collisions at forward and backward rapidity, at a nucleon– nucleon centre-of-mass energy √sNN = 5.02 TeV, has been performed with the ALICE apparatus at the LHC. The φ-mesons have been identified in the dimuon decay channel in the transverse momentum (pT) range 1 < pT < 7 GeV/c, both in the p-going (2.03 < y < 3.53) and the Pb-going (−4.46 < y < −2.96) directions — where y stands for the rapidity in the nucleon–nucleon centre-of-mass — the integrated luminosity amounting to 5.01 ± 0.19 nb−1 and 5.81 ± 0.20 nb−1, respectively, for the two data sam- ...Daha fazlası

Makale 2017 4 Görüntülenme

Erişime Açık

Azimuthally differential pion femtoscopy in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present the first azimuthally differential measurements of the pion source size relative to the second harmonic event plane in Pb-Pb collisions at a center-of-mass energy per nucleon-nucleon pair of sNN 1⁄4 2.76 TeV. The measurements have been performed in the centrality range 0%–50% and for pion pair transverse momenta 0.2 < kT < 0.7 GeV=c. We find that the Rside and Rout radii, which characterize the pion source size in the directions perpendicular and parallel to the pion transverse momentum, oscillate out of phase, similar to what was observed at the Relativistic Heavy Ion Collider. The ...Daha fazlası

Makale 2017 2 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 [20]

Yayın Tarihi [1]

Yayın Dili [1]

Energy dependence of forward-rapidity J/ψ and ψ(2S) production in pp collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

J/ψ Elliptic Flow in Pb-Pb Collisions at sNN = 5.02 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

K∗(892)0 and φ(1020) meson production at high transverse momentum in pp and Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Kaon femtoscopy in Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Linear and non-linear flow mode in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Enhanced production of multi-strange hadrons in high-multiplicity proton–proton collisions

KARASU UYSAL, Ayben | ALICE Collaboration

Production of muons from heavy-flavour hadron decays in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Evolution of the longitudinal and azimuthal structure of the near-side jet peak inPb-Pb collisions at √sNN =2.76TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Production of π0 and η mesons up to high transverse momentum in pp collisions at 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

φ-Meson production at forward rapidity in p–Pb collisions at √sNN = 5.02 TeV and in pp collisions at √s = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Azimuthally differential pion femtoscopy in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration