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Filtreler
Filtreler
Bulunan: 75 Adet 0.001 sn
Yayın Tarihi : 2016 ✕Atıf Dizini : Scopus ✕
Koleksiyon [7]
İlgili Araştırmacılar [20]
Ambargo Durumu [1]
Tam Metin [2]
Yayın Türü [4]
Yazar/lar [19]
Atıf Dizini [4]
Konu Başlıkları [20]
Yayıncı [20]
Tez Danışmanı [2]
Yayın Tarihi [1]
Yayın Dili [3]
Erişime Açık

D-meson production in p-Pb collisions at √sNN = 5.02 TeV and in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

In the context of the investigation of the quark gluon plasma produced in heavy-ion collisions, hadrons containing heavy (charm or beauty) quarks play a special role for the characterization of the hot and dense medium created in the interaction. The measurement of the production of charm and beauty hadrons in proton– proton collisions, besides providing the necessary reference for the studies in heavy-ion reactions, constitutes an important test of perturbative quantum chromodynamics (pQCD) calculations. Heavy-flavor production in proton–nucleus collisions is sensitive to the various effects ...Daha fazlası

Makale 2016 6 Görüntülenme
Erişime Açık

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb–Pb collisions at √sNN = 2.76 TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient (v2) represents the elliptic flow. The v2 coefficient of inclusive electrons is measured in three centrality classes (0–10%, 10–20% and 20–40%) with the event plane and the scalar product methods in the transverse momentum (pT) intervals 0.5–13GeV/c and 0.5–8GeV/c, respectively. After su ...Daha fazlası

Diğer 2016 3 Görüntülenme
Erişime Açık

Search for weakly decaying

KARASU UYSAL, Ayben | ALICE Collaboration

We present results of a search for two hypothetical strange dibaryon states, i.e. the H-dibaryon and the possible !n bound state. The search is performed with the ALICE detector in central (0–10%) Pb– Pb collisions at √sNN = 2.76 TeV, by invariant mass analysis in the decay modes !n → dπ+ and Hdibaryon → !pπ−. No evidence for these bound states is observed. Upper limits are determined at 99% confidence level for a wide range of lifetimes and for the full range of branching ratios. The results are compared to thermal, coalescence and hybrid UrQMD model expectations, which describe correctly the ...Daha fazlası

Makale 2016 1 Görüntülenme
Erişime Açık

Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The elliptic flow, v2, of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4) is measured in Pb–Pb collisions at √sNN = 2.76 TeV with the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee–Yang zeros methods are used. The dependence of the v2 of muons from heavy-flavour hadron decays on the collision centrality, in the range 0–40%, and on transverse momentum, pT, is studied in the interval 3 < pT < 10 GeV/c. A positive v2 is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10–20% and 20–40% cen ...Daha fazlası

Makale 2016 3 Görüntülenme
Erişime Açık

Centrality dependence of pion freeze-out radii in Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report on the measurement of freeze-out radii for pairs of identical-charge pions measured in Pb-Pb collisions at √sNN = 2.76 TeV as a function of collision centrality and the average transverse momentum of the pair kT. Three-dimensional sizes of the system (femtoscopic radii), as well as direction-averaged one- dimensional radii are extracted. The radii decrease with kT, following a power-law behavior. This is qualitatively consistent with expectations from a collectively expanding system, produced in hydrodynamic calculations. The radii also scale linearly with ⟨dNch/dη⟩1/3. This behavior ...Daha fazlası

Makale 2016 7 Görüntülenme
Erişime Açık

Electrochemical glucose biosensing via new generation DTP type conducting polymers/gold nanoparticles/glucose oxidase modified electrodes

AZAK, Hacer | KURBANOĞLU, Sevinç | YILDIZ, Hüseyin Bekir | ÖZKAN, Sibel Ayşıl

The synthesis of derivatives of dithionepyrrole is a hot subject that has been studied extensively. In this study, a novel approach for constructing different glucose biosensors using conducting polymers of 4-(4H-dithyinol[3,2-b:2′,3′-d]pyroll-4-yl)aniline and 4-(4H-dithyinol[3,2-b:2′,3′-d]pyroll-4-yl)-[1,1′-biphenyl]-4-amine is proposed. After the synthesis and characterizations of the dithionepyrrole type monomers, they were used in glucose biosensing applications. The surface of gold electrode was modified with mercaptoethane sulfonic acid and p-aminothiophenol functionalized gold nanoparti ...Daha fazlası

Makale 2016 Elsevier B.V. 6 Görüntülenme
Erişime Açık

Transverse momentum dependence of D-meson production in Pb-Pb collisions at √sNN=2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract: The production of prompt charmed mesons D0, D+ and D∗+, and their an- tiparticles, was measured with the ALICE detector in Pb-Pb collisions at the centre-of-mass energy per nucleon pair, √sNN, of 2.76TeV. The production yields for rapidity |y| < 0.5 are presented as a function of transverse momentum, pT, in the interval 1–36GeV/c for the centrality class 0–10% and in the interval 1–16 GeV/c for the centrality class 30–50%. The nuclear modification factor RAA was computed using a proton-proton reference at √√ s = 2.76 TeV, based on measurements at s = 7 TeV and on theoretical calculat ...Daha fazlası

Makale 2016 3 Görüntülenme
Erişime Açık

Centrality dependence of ψ(2S) suppression in p-Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The inclusive production of the ψ(2S) charmonium state was studied as a function of centrality in p-Pb collisions at the nucleon-nucleon center of mass energy √sNN = 5.02 TeV at the CERN LHC. The measurement was performed with the ALICE detec- tor in the center of mass rapidity ranges −4.46 < ycms < −2.96 and 2.03 < ycms < 3.53, down to zero transverse momentum, by reconstructing the ψ(2S) decay to a muon pair. The ψ(2S) production cross section σψ(2S) is presented as a function of the collision cen- trality, which is estimated through the energy deposited in forward rapidity calorime- ters. T ...Daha fazlası

Makale 2016 2 Görüntülenme
Erişime Açık

Measurement of D-meson production versus multiplicity in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract: The measurement of prompt D-meson production as a function of multiplic- ity in p–Pb collisions at √sNN = 5.02TeV with the ALICE detector at the LHC is re- ported. D0, D+ and D∗+ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range −0.96 < ycms < 0.04 and transverse momentum interval 1 < pT < 24 GeV/c. The multiplicity dependence of D-meson production is examined by either comparing yields in p–Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero-degree energy, with those in pp collisions ...Daha fazlası

Diğer 2016 7 Görüntülenme
Erişime Açık

Direct photon production in Pb-Pb collisions at sNN−−−√ = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Direct photon production at mid-rapidity in Pb-Pb collisions at sNN−−−√=2.76 TeV was studied in the transverse momentum range 0.9

Makale 2016 8 Görüntülenme
Erişime Açık

Genotyping of Staphylococcus Aureus Strains Isolated From Bovine Mastitis in Turkey by Using ERIC-PCR Method.

ARSLAN, Emine | GÜLBAHÇE MUTLU, Elif

Mastitis is an intramammary infection that leads to important economic losses in dairy industry such as increasing the amount of waste milk by affecting the quality and quantity of the milk, removing cows from herd or sending them for slaughter early. Staphylococcus aureus has an important place in the fight against mastitis. In this study, it is aimed to genotyping of the 98 S. aureus isolates that were isolated from bovine mastitis by the polymerase chain reaction of enterobacterial repetitive intergenic consensus (ERIC-PCR). ERIC primers generated DNA products in sizes ranging between ~8000 ...Daha fazlası

Makale 2016 Pakistan Journal of Zoology 6 Görüntülenme
Erişime Açık

Event-shape engineering for inclusive spectra and elliptic flow in Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report on results obtained with the event-shape engineering technique applied to Pb-Pb collisions at sNN = 2.76 TeV. By selecting events in the same centrality interval, but with very different average flow, different initial-state conditions can be studied. We find the effect of the event-shape selection on the elliptic flow coefficient v2 to be almost independent of transverse momentum pT, which is as expected if this effect is attributable to fluctuations in the initial geometry of the system. Charged-hadron, -pion, -kaon, and -proton transverse momentum distributions are found to be har ...Daha fazlası

Diğer 2016 4 Görüntülenme
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