A5105771242- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Particle Detector Development and Performance
- Nuclear reactor physics and engineering
- Radar Systems and Signal Processing
- Advanced SAR Imaging Techniques
- Antenna Design and Optimization
- Network Time Synchronization Technologies
- Pulsars and Gravitational Waves Research
- Vehicular Ad Hoc Networks (VANETs)
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Microwave Imaging and Scattering Analysis
- Stochastic processes and statistical mechanics
- Wireless Body Area Networks
- Electromagnetic Compatibility and Measurements
- Soil Moisture and Remote Sensing
- Ultra-Wideband Communications Technology
Excellence Cluster Universe
2015-2024
Technical University of Munich
2014-2024
Institut für Technische und Angewandte Physik (Germany)
2023
A. Alikhanyan National Laboratory
2015-2018
At sufficiently high temperature and energy density, nuclear matter undergoes a transition to phase in which quarks gluons are not confined: the Quark-Gluon Plasma (QGP) [1]. Such an extreme state of strongly-interacting QCD (Quantum Chromo-Dynamics) is produced laboratory with high-energy collisions heavy nuclei, where enhanced production strange hadrons observed [2-6]. Strangeness enhancement, originally proposed as signature QGP formation [7], more pronounced for multi-strange baryons....
The pseudorapidity density of charged particles ($\mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta$) at mid-rapidity in Pb-Pb collisions has been measured a center-of-mass energy per nucleon pair $\sqrt{s_{\rm NN}}$ = 5.02 TeV. It increases with centrality and reaches value $1943 \pm 54$ $|\eta|<0.5$ for the 5% most central collisions. A rise $\mathrm{d}N_\mathrm{ch}/\mathrm{d}\eta$ as function is observed, steeper than that observed proton-proton following trend established by measurements lower...
We report the measurements of correlations between event-by-event fluctuations amplitudes anisotropic flow harmonics in nucleus-nucleus collisions, obtained for first time using a new analysis method based on multiparticle cumulants mixed harmonics. This novel is robust against systematic biases originating from nonflow effects and by construction any dependence symmetry planes eliminated. demonstrate that exhibit better sensitivity to medium properties than individual The are performed...
The multi-strange baryon yields in PbPb collisions have been shown to exhibit an enhancement relative pp reactions. In this work, Ξ and Ω production rates measured with the ALICE experiment as a function of transverse momentum, pT, pPb at centre-of-mass energy sNN=5.02 TeV. results cover kinematic ranges 0.6 GeV/c<pT<7.2 GeV/c 0.8 GeV/c<pT<5 GeV/c, for respectively, common rapidity interval −0.5<yCMS<0. Multi-strange baryons identified by reconstructing their weak decays into charged...
The production of prompt charmed mesons D0, D+ and D∗+, their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at centre-of-mass energy per nucleon pair, $$ \sqrt{s_{\mathrm{NN}}} , 2.76 TeV. yields for rapidity |y| < 0.5 are presented as a function transverse momentum, p T, interval 1–36 GeV/c centrality class 0–10% 1–16 30–50%. nuclear modification factor R AA computed using proton-proton reference \sqrt{s}=2.76 TeV, based on measurements \sqrt{s}=7 TeV theoretical...
The pseudorapidity ($η$) and transverse-momentum ($p_{\rm T}$) distributions of charged particles produced in proton-proton collisions are measured at the centre-of-mass energy $\sqrt{s}$ = 13 TeV. distribution $|η|
The azimuthal anisotropy coefficient ${v}_{2}$ of prompt ${D}^{0}$, ${D}^{+}$, ${D}^{*+}$, and ${D}_{s}^{+}$ mesons was measured in midcentral (30%--50% centrality class) Pb-Pb collisions at a center-of-mass energy per nucleon pair $\sqrt{{s}_{NN}}=5.02\text{ }\text{ }\mathrm{TeV}$, with the ALICE detector LHC. $D$ were reconstructed via their hadronic decays midrapidity, $|y|<0.8$, transverse momentum interval $1<{p}_{T}<24\text{ }\mathrm{GeV}/c$. $D$-meson has similar values as that...
We report on the first measurement of an excess in yield $J/\ensuremath{\psi}$ at very low transverse momentum (${p}_{T}<0.3\text{ }\text{ }\mathrm{GeV}/c$) peripheral hadronic Pb-Pb collisions $\sqrt{{s}_{\mathrm{NN}}}=2.76\text{ }\mathrm{TeV}$, performed by ALICE CERN LHC. Remarkably, measured nuclear modification factor rapidity range $2.5<y<4$ reaches about 7 (2) ${p}_{T}$ $0--0.3\text{ }\mathrm{GeV}/c$ 70%--90% (50%--70%) centrality class. The production cross section associated with...
A detailed study of pseudorapidity densities and multiplicity distributions primary charged particles produced in proton–proton collisions, at $$\sqrt{s} =$$ 0.9, 2.36, 2.76, 7 8 TeV, the range $$|\eta |<2$$ , was carried out using ALICE detector. Measurements were obtained for three event classes: inelastic, non-single diffractive events with least one particle interval |<1$$ . The use an improved track-counting algorithm combined ALICE's measurements processes allows a higher precision...
We report measurements of the production prompt D$^0$, D$^+$, D$^{*+}$ and D$^+_{\rm s}$ mesons in Pb-Pb collisions at centre-of-mass energy per nucleon-nucleon pair $\sqrt{s_{\rm NN}}=5.02$ TeV, centrality classes 0-10%, 30-50% 60-80%. The D-meson yields are measured mid-rapidity ($|y|<0.5$) as a function transverse momentum ($p_{\rm T}$). $p_{\rm T}$ intervals covered central are: $1<p_{\rm T}<50$ Gev/$c$ for $2<p_{\rm GeV/$c$ $3<p_{\rm D$^{*+}$, $4<p_{\rm T}<16$ mesons. nuclear...
The production of K $$^{*}$$ (892) $$^{0}$$ and $$\phi $$ (1020) mesons has been measured in p–Pb collisions at $$\sqrt{s_{{\text {NN}}}}$$ $$=$$ 5.02 TeV. $$^{*0}$$ are reconstructed via their decay into charged hadrons with the ALICE detector rapidity range $$-0.5 <y <0$$ . transverse momentum spectra, as a function multiplicity, have p $$_{\mathrm {T}}$$ from 0 to 15 GeV/c for 0.3 21 Integrated yields, mean momenta particle ratios reported compared results pp $$\sqrt{s}$$ 7 TeV Pb–Pb 2.76...
We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02TeV centrality classes measured by ALICE. The measurement covers a wide range from −3.5 to 5, which is sufficient for reliable estimates of total number charged particles produced collisions. For most central (0–5%) we find 21400±1300, while peripheral (80–90%) 230±38. This corresponds an increase (27±4)% over results sNN=2.76TeV previously reported energy dependence heavy-ion found obey modified power-law...
Employing the Bonn–Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of reaction p(3.5GeV)+p→pK+Λ. This might contain information about kaonic cluster "ppK−" (with quantum numbers JP=0− and total isospin I=1/2) via its decay into pΛ. Due to interference effects in our coherent description data, a hypothetical K‾NN (or, specifically "ppK−") signal need not necessarily show up as pronounced feature (e.g. peak) an invariant mass spectrum like Our PWA includes variety...
A bstract The p T -differential production cross section of prompt Λ c + charmed baryons was measured with the ALICE detector at Large Hadron Collider (LHC) in pp collisions $$ \sqrt{s}=7 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>7</mml:mn> </mml:math> TeV and p-Pb \sqrt{s_{\mathrm{NN}}}=5.02 <mml:msub> <mml:mrow> <mml:mi>N</mml:mi> </mml:mrow> </mml:msub> <mml:mn>5.02</mml:mn> midrapidity....
We present an analysis of proton number fluctuations in $\sqrt{s_{NN}}$ = 2.4 GeV Au+Au collisions measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI. With help extensive detector simulations done IQMD transport model events including nuclear clusters, various nuisance effects influencing observed cumulants have been investigated. Acceptance and efficiency corrections applied as a function fine grained rapidity transverse momentum bins, well considering local track...
The second and the third order anisotropic flow, V2 V3, are mostly determined by corresponding initial spatial anisotropy coefficients, ε2 ε3, in density distribution. In addition to their dependence on same coefficient, higher Vn (n>3), can also have a significant contribution from lower which leads mode-coupling effects. this Letter we investigate linear non-linear modes flow for n=4, 5, 6 with ALICE detector at Large Hadron Collider. measurements done particles pseudorapidity range...
We report a precise measurement of the J/ψ elliptic flow in Pb-Pb collisions at sqrt[s_{NN}]=5.02 TeV with ALICE detector LHC. The mesons are reconstructed midrapidity (|y|<0.9) dielectron decay channel and forward rapidity (2.5<y<4.0) dimuon channel, both down to zero transverse momentum. At rapidity, v_{2} is studied as function momentum centrality. A positive observed range 2<p_{T}<8 GeV/c three centrality classes confirms higher statistics our earlier results sqrt[s_{NN}]=2.76...
An invariant differential cross section measurement of inclusive $$\pi ^{0}$$ and $$\eta $$ meson production at mid-rapidity in pp collisions $$\sqrt{s}=8$$ TeV was carried out by the ALICE experiment LHC. The spectra mesons were measured transverse momentum ranges $$0.3<p_{ \text{ T }} <35$$ $$\text{ GeV/c }$$ $$0.5<p_{ , respectively. Next-to-leading order perturbative QCD calculations using fragmentation functions DSS14 for AESSS overestimate sections both neutral mesons, although such...
Flow coefficients $v_{n}$ of the orders $n = 1 - 6$ are measured with High-Acceptance DiElectron Spectrometer (HADES) at GSI for protons, deuterons and tritons as a function centrality, transverse momentum rapidity in Au+Au collisions $\sqrt{s_{NN}} 2.4$ GeV. Combining information from flow all allows to construct first time, collision energies few GeV, multi-differential picture angular emission pattern these particles. It reflects complicated interplay between effect central fireball...
We present a new analysis framework called "Correlation Analysis Tool using the Schr\"odinger equation" (CATS) which computes two-particle femtoscopy correlation function $C(k)$, with $k$ being relative momentum for particle pair. Any local interaction potential and emission source can be used as an input wave is evaluated exactly. In this paper we study on sensitivity of $C(k)$ to different pairs: p-p, p-$\mathrm{\Lambda}$, $\mathrm{K^-}$-p, $\mathrm{K^+}$-p, p-$\mathrm{\Xi}^-$...
We present measurements of the elliptic ($\mathrm{v}_2$), triangular ($\mathrm{v}_3$) and quadrangular ($\mathrm{v}_4$) anisotropic azimuthal flow over a wide range pseudorapidities ($-3.5< η< 5$). The are performed with Pb-Pb collisions at $\sqrt{s_{\text{NN}}} = 2.76$ TeV using ALICE detector Large Hadron Collider (LHC). harmonics obtained two- four-particle correlations from nine different centrality intervals covering central to peripheral collisions. find that shape...
The transverse momentum ($p_{\rm T}$) spectra and elliptic flow coefficient ($v_2$) of deuterons anti-deuterons at mid-rapidity ($|y|<0.5$) are measured with the ALICE detector LHC in Pb-Pb collisions $\sqrt{s_{\rm NN}} = 2.76$ TeV. measurement $p_{\rm T}$ (anti-)deuterons is done up to 8 GeV/$c$ 0-10% centrality class 10-20% 20-40% classes. $v_2$ $0.8 <p_{\rm T} <5$ interval six different intervals (0-5%, 5-10%, 10-20%, 20-30%, 30-40% 40-50%) using scalar product technique. Measured...
We present a measurement of azimuthal correlations between inclusive J/$ψ$ and charged hadrons in p-Pb collisions recorded with the ALICE detector at CERN LHC. The are reconstructed forward (p-going, 2.03 $