Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

Measurements of anisotropic flow coefficients (vn) and their cross-correlations using two- and multiparticle cumulant methods are reported in collisions of pp at √ s = 13 TeV, p–Pb at √sNN = 5.02 TeV, Xe–Xe at √sNN = 5.44 TeV, and Pb–Pb at √sNN = 5.02 TeV recorded with the ALICE detector. The multiplicity dependence of vn is studied in a very wide range from 20 to 3000 particles produced in the mid-rapidity region |η| < 0.8 for the transverse momentum range 0.2 < pT < 3.0 GeV/c. An ordering of the coefficients v2 > v3 > v4 is found in pp and p–Pb collisions, similar to that seen in large colli ...Daha fazlası

Makale 2019 4 Görüntülenme

(Anti) Hypertriton lifetime measurement in Pb–Pb collisions at sNN = 5.02 TeV via two-body decay

KARASU UYSAL, Ayben | ALICE Collaboration

Pb–Pb collisions at √sNN = 5.02 TeV collected by the ALICE experiment at the LHC. The (anti-)hypertriton has been reconstructed via its charged two-body mesonic decay channel and the lifetime has been determined from an exponential fit to the dN/d(ct) spectrum. The measured value, τ = 242+34 (stat.) ± −38 17 (syst.) ps, is compatible with representative theoretical predictions, thus contributing to the solution of the longstanding hypertriton lifetime puzzle.

Makale 2019 2 Görüntülenme

Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Angular correlations between heavy-flavor decay electrons and charged particles at midrapidity pffiffiffiffiffiffiffi (jηj < 0.8) are measured in p-Pb collisions at sNN 1⁄4 5.02 TeV. The analysis is carried out for the 0%–20% (high) and 60%–100% (low) multiplicity ranges. The jet contribution in the correlation distribution from high-multiplicity events is removed by subtracting the distribution from low-multiplicity events. An azimuthal modulation remains after removing the jet contribution, similar to previous observations in two-particle angular correlation measurements for light-flavor had ...Daha fazlası

Makale 2019 4 Görüntülenme

Dielectron and heavy-quark production in inelastic and high-multiplicity proton–proton collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The measurement of dielectron production is presented as a function of invariant mass and transverse momentum (pT) at midrapidity (|ye|

Makale 2019 2 Görüntülenme

Measurement of dielectron production in central Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The first measurement of dielectron (e+e−) production in central (0–10%) Pb–Pb collisions at √sNN = 2.76TeV at the LHC is presented. The dielectron invariant-mass spectrum is compared to the expected contributions from hadron decays in the invariant-mass range 0 < mee < 3.5 GeV/c2. The ratio of data and the cocktail of hadronic contributions without vacuum ρ0 is measured in the invariant-mass range 0.15 < mee < 0.7 GeV/c2, where an excess of dielectrons is observed in other experiments, and its value is 1.40 ± 0.28 (stat.) ± 0.08 (syst.) ± 0.27 (cocktail). The dielectron spectrum measured in t ...Daha fazlası

Makale 2019 3 Görüntülenme

Multiplicity dependence of light (anti-)nuclei production in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The measurement of the deuteron and anti-deuteron production in the rapidity range −1 < y < 0 as a function of transverse momentum and event multiplicity in p–Pb collisions at √sNN = 5.02 TeV is presented. (Anti-)deuterons are identified via their specific energy loss dE/dx and via their time-of- flight. Their production in p–Pb collisions is compared to pp and Pb–Pb collisions and is discussed within the context of thermal and coalescence models. The ratio of integrated yields of deuterons to protons (d/p) shows a significant increase as a function of the charged-particle multiplicity of the ...Daha fazlası

Makale 2019 2 Görüntülenme

Charged-particle production as a function of multiplicity and transverse spherocity in pp collisions at √s = 5.02 and 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present a study of the inclusive charged- particle transverse momentum ( pT ) spectra as a function of charged-particle multiplicity density at mid-pseudorapidity, d Nch /dη, in pp collisions at √s = 5.02 and 13 TeV covering the kinematic range |η| < 0.8 and 0.15 < pT < 20 GeV/c. The results are presented for events with at least one charged particle in |η| < 1 (INEL > 0). The pT spectra are reported for two multiplicity estimators covering different pseudo- rapidity regions. The pT spectra normalized to that for INEL> 0 show little energy dependence. Moreover, the high-pT yields of charged ...Daha fazlası

Makale 2019 20 Görüntülenme

Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN = 5.44 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

In this Letter, the ALICE Collaboration presents the first measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntot, in Xe–Xe collisions at a centre-of-mass √ ch energy per nucleon–nucleon pair of sNN = 5.44 TeV. The measurements are performed as a function of collision centrality over a wide pseudorapidity range of −3.5 < η < 5. The values of dNch/dη at mid-rapidity and Ntot for central collisions, normalised to the number of nucleons participating in the ch √ collision (Npart) as a function of sNN follow the trends established in previ ...Daha fazlası

Makale 2019 10 Görüntülenme

Measurement of D0, D+, D∗+ and D+ production in pp collisions s = 5.02 TeV with ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

The measurements of the production of prompt D0 , D+ , D∗+ , and D+s mesons in proton–proton (pp) col- lisions at √s = 5.02 TeV with the ALICE detector at the Large Hadron Collider (LHC) are reported. D mesons were reconstructed at mid-rapidity (|y| < 0.5) via their hadronic decay channels D0 → K−π+, D+ → K−π+π+, D∗+ → D0π+ → K−π+π+, D+s → φπ+ → K+K−π+, and their charge conjugates. The production cross sections were measured in the transverse momentum interval 0 < pT < 36GeV/cforD0,1 < pT < 36GeV/cforD+ and D∗+, and in 2 < pT < 24 GeV/c for D+s mesons. Thanks to the higher integrated luminosit ...Daha fazlası

Makale 2019 3 Görüntülenme

Relative particle yield fluctuations in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

First results on K/π, p/π and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in Pb–Pb collisions at √sNN = 2.76 TeV . The observable νdyn , which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of rela- tive particle yields and also provides insight into the corre- lation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distri- butions in case of ...Daha fazlası

Makale 2019 5 Görüntülenme

Charged jet cross section and fragmentation in proton-proton collisions pffiffi at s=7TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Azimuthally-differential femtoscopic measurements, being sensitive to spatio-temporal characteristics of the source as well as to the collective velocity fields at freeze out, provide very important information on the nature and dynamics of the system evolution. While the HBT radii oscillations relative to the second harmonic event plane measured recently reflect mostly the spatial geometry of the source, model studies have shown that the HBT radii oscillations relative to the third harmonic event plane are predominantly defined by the velocity fields. In this Letter, we present the first resu ...Daha fazlası

Makale 2019 4 Görüntülenme

Measurement of Upsilon(1S) Elliptic Flow at Forward Rapidity in Pb-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The first measurement of the Υð1SÞ elliptic flow coefficient (v2) is performed at forward rapidity (2.5 < y < 4) in Pb–Pb collisions at sNN 1⁄4 5.02 TeV with the ALICE detector at the LHC. The results are obtained with the scalar product method and are reported as a function of transverse momentum (pT ) up to 15 GeV=c in the 5%–60% centrality interval. The measured Upsilon is consistent with 0 and with the small positive values predicted by transport models within uncertainties. The v2 coefficient in 2 < pT < 15 GeV=c is lower than that of inclusive J=ψ mesons in the same pT interval by 2.6 st ...Daha fazlası

Makale 2019 9 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 [1]

Yayın Dili [1]

Investigations of Anisotropic Flow Using Multiparticle Azimuthal Correlations in pp, p-Pb, Xe-Xe, and Pb-Pb Collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

(Anti) Hypertriton lifetime measurement in Pb–Pb collisions at sNN = 5.02 TeV via two-body decay

KARASU UYSAL, Ayben | ALICE Collaboration

Azimuthal Anisotropy of Heavy-Flavor Decay Electrons in p-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Dielectron and heavy-quark production in inelastic and high-multiplicity proton–proton collisions at √s = 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of dielectron production in central Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Multiplicity dependence of light (anti-)nuclei production in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Charged-particle production as a function of multiplicity and transverse spherocity in pp collisions at √s = 5.02 and 13 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN = 5.44 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of D0, D+, D∗+ and D+ production in pp collisions s = 5.02 TeV with ALICE

KARASU UYSAL, Ayben | ALICE Collaboration

Relative particle yield fluctuations in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Charged jet cross section and fragmentation in proton-proton collisions pffiffi at s=7TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Measurement of Upsilon(1S) Elliptic Flow at Forward Rapidity in Pb-Pb Collisions at sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration