Refine
Year of publication
Language
- English (565) (remove)
Has Fulltext
- yes (565)
Is part of the Bibliography
- no (565)
Keywords
- Heavy Ion Experiments (11)
- Hadron-Hadron scattering (experiments) (7)
- Hadron-Hadron Scattering (3)
- Heavy Ions (3)
- Heavy-ion collision (3)
- LHC (3)
- ALICE experiment (2)
- Charm physics (2)
- Pb–Pb collisions (2)
- acute myeloid leukemia (2)
- childhood acute myeloid leukemia (2)
- relapse (2)
- salvage therapy (2)
- ALICE detector (1)
- Anti-nuclei (1)
- BRAF (1)
- Beauty production (1)
- CVID (1)
- Centrality Class (1)
- Centrality Selection (1)
- Electron-pion identification (1)
- Elliptic flow (1)
- European Society for Immunodeficiencies (ESID) (1)
- Fibre/foam sandwich radiator (1)
- German PID-NET registry (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- IgG substitution therapy (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Jets (1)
- LCH (1)
- Langerhans cell histiocytosis (1)
- Minimum Bias (1)
- Monte Carlo (1)
- Multi-wire proportional drift chamber (1)
- Neural network (1)
- PID prevalence (1)
- Particle correlations and fluctuations (1)
- Production Cross Section (1)
- QCD (1)
- Quark gluon plasma (1)
- Rapidity Range (1)
- Relativistic heavy ion physics (1)
- Resolution Parameter (1)
- Single electrons (1)
- Systematic Uncertainty (1)
- TR (1)
- Tetrastigma voinierianum (1)
- Time Projection Chamber (1)
- Tracking (1)
- Transition radiation detector (1)
- Trigger (1)
- Xenon-based gas mixture (1)
- child (1)
- dE/dx (1)
- ectosomes (1)
- exosomes (1)
- extracellular vesicles (1)
- guidelines (1)
- heavy ion experiments (1)
- irrigation (1)
- leaf patch clamp pressure (1)
- liana (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- pediatric (1)
- pediatric patients (1)
- pp collisions (1)
- primary immunodeficiency (PID) (1)
- quark gluon plasma (1)
- registry for primary immunodeficiency (1)
- reproducibility (1)
- rigor (1)
- standardization (1)
- transfer function (1)
- turgor pressure (1)
- turgor pressure probe (1)
- vemurafenib (1)
Institute
- Physik (558)
- Frankfurt Institute for Advanced Studies (FIAS) (514)
- Informatik (495)
- Medizin (5)
- Hochschulrechenzentrum (2)
- Biochemie und Chemie (1)
- Georg-Speyer-Haus (1)
Scattering studies with low-energy kaon-proton femtoscopy in proton–proton collisions at the LHC
(2020)
The study of the strength and behaviour of the antikaon-nucleon (K¯¯¯¯N) interaction constitutes one of the key focuses of the strangeness sector in low-energy Quantum Chromodynamics (QCD). In this letter a unique high-precision measurement of the strong interaction between kaons and protons, close and above the kinematic threshold, is presented. The femtoscopic measurements of the correlation function at low pair-frame relative momentum of (K+ p ⊕ K− p¯¯¯) and (K− p ⊕ K+ p¯¯¯) pairs measured in pp collisions at s√ = 5, 7 and 13 TeV are reported. A structure observed around a relative momentum of 58 MeV/c in the measured correlation function of (K− p ⊕ K+ p¯¯¯) with a significance of 4.4. σ constitutes the first experimental evidence for the opening of the (K¯¯¯¯0n⊕K0n¯¯¯) isospin breaking channel due to the mass difference between charged and neutral kaons. The measured correlation functions have been compared to Jülich and Kyoto models in addition to the Coulomb potential. The high-precision data at low relative momenta presented in this work prove femtoscopy to be a powerful complementary tool to scattering experiments and provide new constraints above the K¯¯¯¯N threshold for low-energy QCD chiral models.
Results on the production of 4He and Image 1 nuclei in Pb–Pb collisions at √sNN=2.76TeV in the rapidity range |y|<1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0–10% central events are found to be dN/dyHe4=(0.8±0.4(stat)±0.3(syst))×10−6 and Image 2, respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (Tchem=156MeV) as for light hadrons. The measured ratio of Image 3 is 1.4±0.8(stat)±0.5(syst).
Transverse momentum (pT ) spectra of charged particles at mid-pseudorapidity in Xe–Xe collisions at √sNN=5.44TeV measured with the ALICE apparatus at the Large Hadron Collider are reported. The kinematic range 0.15<pT<50GeV/c and |η|<0.8 is covered. Results are presented in nine classes of collision centrality in the 0–80% range. For comparison, a pp reference at the collision energy of √s=5.44 TeV is obtained by interpolating between existing pp measurements at √s=5.02 and 7 TeV. The nuclear modification factors in central Xe–Xe collisions and Pb–Pb collisions at a similar center-of-mass energy of √sNN=5.02 TeV, and in addition at 2.76 TeV, at analogous ranges of charged particle multiplicity density 〈dNch/dη〉 show a remarkable similarity at pT>10 GeV/c. The centrality dependence of the ratio of the average transverse momentum 〈pT〉 in Xe–Xe collisions over Pb–Pb collision at √s=5.02 TeV is compared to hydrodynamical model calculations.
The elliptic flow (v2) of (anti-)3He is measured in Pb–Pb collisions at √sNN=5.02TeV in the transverse-momentum (pT) range of 2–6 GeV/c for the centrality classes 0–20%, 20–40%, and 40–60% using the event-plane method. This measurement is compared to that of pions, kaons, and protons at the same center-of-mass energy. A clear mass ordering is observed at low pT, as expected from relativistic hydrodynamics. The violation of the scaling of v2 with the number of constituent quarks at low pT, already observed for identified hadrons and deuterons at LHC energies, is confirmed also for (anti-)3He. The elliptic flow of (anti-)3He is underestimated by the Blast-Wave model and overestimated by a simple coalescence approach based on nucleon scaling. The elliptic flow of (anti-)3He measured in the centrality classes 0–20% and 20–40% is well described by a more sophisticated coalescence model where the phase-space distributions of protons and neutrons are generated using the iEBE-VISHNU hybrid model with AMPT initial conditions.
The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high-transverse momentum trigger hadron in p–Pb collisions at √sNN=5.02 TeV. Jets are reconstructed from charged-particle tracks using the anti-kT algorithm with resolution parameter R=0.2 and 0.4. A data-driven statistical approach is used to correct the uncorrelated background jet yield. Recoil jet distributions are reported for jet transverse momentum 15<pT,jetch<50GeV/c and are compared in various intervals of p–Pb event activity, based on charged-particle multiplicity and zero-degree neutral energy in the forward (Pb-going) direction. The semi-inclusive observable is self-normalized and such comparisons do not require the interpretation of p–Pb event activity in terms of collision geometry, in contrast to inclusive jet observables. These measurements provide new constraints on the magnitude of jet quenching in small systems at the LHC. In p–Pb collisions with high event activity, the average medium-induced out-of-cone energy transport for jets with R=0.4 and 15<pT,jetch<50GeV/c is measured to be less than 0.4 GeV/c at 90% confidence, which is over an order of magnitude smaller than a similar measurement for central Pb–Pb collisions at √sNN=2.76TeV. Comparison is made to theoretical calculations of jet quenching in small systems, and to inclusive jet measurements in p–Pb collisions selected by event activity at the LHC and in d–Au collisions at RHIC.