Refine
Year of publication
Document Type
- Preprint (633)
- Article (370)
- Contribution to a Periodical (3)
- Working Paper (2)
Has Fulltext
- yes (1008)
Is part of the Bibliography
- no (1008)
Keywords
- Heavy Ion Experiments (19)
- Hadron-Hadron Scattering (11)
- Hadron-Hadron scattering (experiments) (11)
- Heavy-ion collision (6)
- Collective Flow (4)
- Jets (4)
- LHC (4)
- Quark-Gluon Plasma (4)
- Heavy Ions (3)
- Jets and Jet Substructure (3)
- ALICE experiment (2)
- COVID-19 (2)
- Charm physics (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Germany (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- QCD (2)
- acute myeloid leukemia (2)
- childhood acute myeloid leukemia (2)
- relapse (2)
- salvage therapy (2)
- 3years (1)
- 900 GeV (1)
- ALICE (1)
- ALICE detector (1)
- ALK-rearranged NSCLC (1)
- Active middle ear implants (1)
- Acute kidney injury (1)
- Alcorrín (1)
- Animal model (1)
- Anti-nuclei (1)
- Auditory system (1)
- Autologous stem cell transplantation (1)
- Beauty production (1)
- Bike-Sharing (1)
- Bipolar disorder (1)
- Blood loss (1)
- Bone conduction devices (1)
- Bone tumor (1)
- Boosted Jets (1)
- Bronce Final (1)
- CTLA-4 (1)
- CVD biomarker (1)
- Car-Sharing (1)
- Centrality Class (1)
- Centrality Selection (1)
- Cleanliness level (1)
- Collective Flow, (1)
- Colloids (1)
- Colon capsule endoscopy (1)
- Complementation rate (1)
- Congenital ocular motor apraxia (1)
- Consensus statement (1)
- Couch tracking (1)
- DME (1)
- DNA methylation (1)
- Deutschland (1)
- Diagnostic markers (1)
- EBV (1)
- Early Iron Age (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Elektromobilität (1)
- Elliptic flow (1)
- Endocrine cancer (1)
- Estrecho de Gibraltar (1)
- Extended donor criteria (1)
- Fibre/foam sandwich radiator (1)
- Flottenkonzepte (1)
- Forschung (1)
- Fortifica (1)
- General relativity (1)
- General relativity equations & solutions (1)
- Gimbaled tracking (1)
- Graft function (1)
- Graft survival (1)
- HES (1)
- HNO (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hals-Nasen-Ohren-Heilkunde (1)
- Hard Scattering (1)
- Health policy (1)
- Heavy Ion Experiment (1)
- Heavy Quark Production (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- High-dose chemotherapy (1)
- Hydroxyethyl starch (1)
- ILUVIEN (1)
- IgG4-related disease (1)
- Incomplete colonoscopy (1)
- Indeterminate biliary stricture (1)
- Indigenous Peoples (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- Joubert syndrome (1)
- Krebsforschung (1)
- LTER (1)
- Ladeinfrastruktur (1)
- Late Bronze Age (1)
- Lehre (1)
- Lenalidomide (1)
- Lepton-Nucleon Scattering (experiments) (1)
- Liver transplantation (1)
- Long‐term ecosystem research (1)
- Low volume prep (1)
- MLC tracking (1)
- Marginal grafts (1)
- Minimum Bias (1)
- Mixed hearing loss (1)
- Mobil-Stationen (1)
- Molar tooth sign (1)
- Monte Carlo (1)
- Moviprep (1)
- Multi-Parton Interactions (1)
- Multi-stakeholder approach (1)
- Multi-wire proportional drift chamber (1)
- Multiple myeloma (1)
- Neural network (1)
- Neuroendocrine cancer (1)
- Next-generation sequencing (1)
- Nucleosynthesis in explosive environments (1)
- ORL (1)
- Organ motion (1)
- Organ rinse (1)
- Organ shortage (1)
- Otorhinolaryngology (1)
- PCR (1)
- PD-1 (1)
- PYTHIA (1)
- Particle and Resonance Production (1)
- Pedelecs (1)
- Phoenician Writing (1)
- Phoenicians (1)
- Phospho-soda (1)
- PillCamColon2 (1)
- Polyps (1)
- Primera Edad del Hierro (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Quark Deconfinement (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Quarkonium (1)
- Rabbit (1)
- Radiofrequency ablation (1)
- Rapidity Range (1)
- Rehabilitation (1)
- Relapse (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Research (1)
- Research infrastructure (1)
- Residency (1)
- Resolution Parameter (1)
- Retro-IDEAL (1)
- Robotic tracking (1)
- SARS-CoV-2 (1)
- SARS-CoV‑2 pandemic (1)
- SARS-CoV‑2-Pandemie (1)
- Second-line treatment (1)
- Single electrons (1)
- Site networks (1)
- Specialist training (1)
- Steroid (1)
- Strait of Gibraltar (1)
- Surgery (1)
- Systematic Uncertainty (1)
- TP53 mutation status (1)
- TR (1)
- Tacrolimus (1)
- Teaching (1)
- Technical data (1)
- Time Projection Chamber (1)
- Tracking (1)
- Transient & explosive astronomical phenomena (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Trauma (1)
- Trigger (1)
- Tumor therapy (1)
- Umweltbilanz (1)
- University hospitals (1)
- Universitätskliniken (1)
- VX-2 (1)
- Vector Boson Production (1)
- Volume therapy (1)
- Weiterbildung (1)
- Xenon-based gas mixture (1)
- adolescents’ health (1)
- advanced melanoma (1)
- allocation (1)
- bile duct stenosis (1)
- biliary stricture (1)
- biofilm (1)
- child (1)
- cholangiocarcinoma (1)
- complete response (1)
- dE/dx (1)
- dental implant (1)
- discontinuation (1)
- disease progression (1)
- ectosomes (1)
- electrolytic cleaning (1)
- endoscopic retrograde cholangiopancreatography (1)
- endoscopy (1)
- eosinophilic cholangitis (1)
- escritura fenicia (1)
- exosomes (1)
- extracellular vesicles (1)
- fenicios (1)
- fortificación, (1)
- fourth (1)
- graft (1)
- guidelines (1)
- heavy ion experiments (1)
- immune checkpoint blockade (1)
- immunohistochemistry (1)
- indígenas (1)
- infection (1)
- kidney (1)
- kidney transplantation (1)
- liver metastasis (1)
- liver transplantation (1)
- loss (1)
- microdosing (1)
- microparticles (1)
- microsatellite instability (1)
- microvesicles (1)
- minimal information requirements (1)
- multidrug resistance (1)
- multisite cooperation (1)
- neutralizing antibodies (1)
- nocardia (1)
- nocardiosis (1)
- paediatric nephrology (1)
- pediatric (1)
- pediatric patients (1)
- periimplantitis (1)
- perio-prosthetic joint infection (1)
- personalized oncology (1)
- pp collisions (1)
- primary sclerosing cholangitis (1)
- pulmonary nocardiosis (1)
- quark gluon plasma (1)
- re-transplantation (1)
- recurrent cholangitis (1)
- repeated (1)
- reproducibility (1)
- research consortium (1)
- rigor (1)
- risk factor progression (1)
- risk factors (1)
- second-line immunotherapy (1)
- sequential ALK-inhibitor therapy (1)
- short-course antibiotic therapy (1)
- spike protein (1)
- standardization (1)
- survival (1)
- targeted therapy (1)
- third (1)
- transfer (1)
- transition (1)
- translational cancer research (1)
- treatment resistance (1)
- uveal melanoma (1)
- variants of concern (1)
Institute
- Physik (957)
- Frankfurt Institute for Advanced Studies (FIAS) (886)
- Informatik (855)
- Medizin (36)
- Informatik und Mathematik (3)
- Präsidium (3)
- Geographie (2)
- Geowissenschaften (2)
- Hochschulrechenzentrum (2)
- Biowissenschaften (1)
Multiplicity dependence of inclusive J/ψ production at midrapidity in pp collisions at √s = 13 TeV
(2020)
Measurements of the inclusive J/ψ yield as a function of charged-particle pseudorapidity density dNch/dη in pp collisions at √s = 13 TeV with ALICE at the LHC are reported. The J/ψ meson yield is measured at midrapidity (|y| < 0.9) in the dielectron channel, for events selected based on the charged-particle multiplicity at midrapidity (|η| < 1) and at forward rapidity (−3.7 < η < −1.7 and 2.8 < η < 5.1); both observables are normalized to their corresponding averages in minimum bias events. The increase of the normalized J/ψ yield with normalized dNch/dη is significantly stronger than linear and dependent on the transverse momentum. The data are compared to theoretical predictions, which describe the observed trends well, albeit not always quantitatively.
Two-particle correlation functions were measured for pp, p, p, and pairs in Pb–Pb collisions at √sNN = 2.76 TeV and √sNN = 5.02 TeV recorded by the ALICE detector. From a simultaneous fit to all obtained correlation functions, real and imaginary components of the scattering lengths, as well as the effective ranges, were extracted for combined p and p pairs and, for the first time, for pairs. Effective averaged scattering parameters for heavier baryon–antibaryon pairs, not measured directly, are also provided. The results reveal similarly strong interaction between measured baryon–antibaryon pairs, suggesting that they all annihilate in the same manner at the same pair relative momentum k∗. Moreover, the reported significant non-zero imaginary part and negative real part of the scattering length provide motivation for future baryon–antibaryon bound state searches.
We present the first measurements of femtoscopic correlations between the K0 S and K± particles in pp collisions at √s = 7 TeV measured by the ALICE experiment. The observed femtoscopic correlations are consistent with final-state interactions proceeding solely via the a0(980) resonance. The extracted kaon source radius and correlation strength parameters for K0 SK− are found to be equal within the experimental uncertainties to those for K0 SK+. Results of the present study are compared with those from identical-kaon femtoscopic studies also performed with pp collisions at √s = 7 TeV by ALICE andwith a K0 SK± measurement in Pb–Pb collisions at √sNN = 2.76 TeV. Combined with the Pb–Pb results, our pp analysis is found to be compatible with th e interpretation of the a0(980) having a tetraquark structure instead of that of a diquark.
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 results on azimuthally-differential pion femtoscopy relative to the third harmonic event plane as a function of the pion pair transverse momentum kT for different collision centralities in Pb–Pb collisions at √sNN = 2.76 TeV. 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 in phase relative to the third harmonic event plane, similar to the results from 3+1D hydrodynamical calculations. The observed radii oscillations unambiguously signal a collective expansion and anisotropy in the velocity fields. A comparison of the measured radii scillations with the Blast-Wave model calculations indicate that the initial state triangularity is washedout at freeze out.
The 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 Hadron Collider. The measurements are done for particles in the pseudorapidity range |η| < 0.8 and the transverse momentum range 0.2 < pT < 5.0 GeV/c as a function of collision centrality. The results are compared with theoretical calculations and provide important constraints on the initial conditions, including initial spatial geometry and its fluctuations, as well as the ratio of the shear viscosity to entropy density of the produced system.
The first measurements of anisotropic flow coefficients vn for mid-rapidity charged particles in Xe–Xe collisions at √sNN = 5.44 TeV are presented. Comparing these measurements to those from Pb–Pb collisions at √sNN = 5.02 TeV, v2 is found to be suppressed for mid-central collisions at the same centrality, and enhanced for central collisions. The values of v3 are generally larger in Xe–Xe than in Pb–Pb at a given centrality. These observations are consistent with expectations from hydrodynamic predictions. When both v2 and v3 are divided by their corresponding eccentricities for a variety of initial state models, they generally scale with transverse density when comparing Xe–Xe and Pb–Pb, with some deviations observed in central Xe–Xe and Pb–Pb collisions. These results assist in placing strong constraints on both the initial state geometry and medium response for relativistic heavy-ion collisions.
The measurement of the production of charm jets, identified by the presence of a D0 meson in the jet constituents, is presented in proton–proton collisions at centre-of-mass energies of √s = 5.02 and 13 TeV with the ALICE detector at the CERN LHC. The D0 mesons were reconstructed from their hadronic decay D0 → K−π+ and the respective charge conjugate. Jets were reconstructed from D0-meson candidates and charged particles using the anti-kT algorithm, in the jet transverse momentum range 5 < pT,chjet < 50 GeV/c, pseudorapidity |ηjet| < 0.9 − R, and with the jet resolution parameters R = 0.2, 0.4, 0.6. The distribution of the jet momentum fraction carried by a D0 meson along the jet axis (z ch) was measured in the range 0.4 < z ch < 1.0 in four ranges of the jet transverse momentum. Comparisons of results for different collision energies and jet resolution parameters are also presented. The measurements are compared to predictions from Monte Carlo event generators based on leading-order and next-to-leading-order perturbative quantum chromodynamics calculations. A generally good description of the main features of the data is obtained in spite of a few discrepancies at low pT,chjet. Measurements were also done for R = 0.3 at √s = 5.02 and are shown along with their comparisons to theoretical predictions in an appendix to this paper.
An excess of J/ψ yield at very low transverse momentum (pT<0.3 GeV/c), originating from coherent photoproduction, is observed in peripheral and semicentral hadronic Pb–Pb collisions at a center-of-mass energy per nucleon pair of sNN=5.02 TeV. The measurement is performed with the ALICE detector via the dimuon decay channel at forward rapidity (2.5<y<4). The nuclear modification factor at very low pT and the coherent photoproduction cross section are measured as a function of centrality down to the 10% most central collisions. These results extend the previous study at sNN=2.76 TeV, confirming the clear excess over hadronic production in the pT range 0−0.3 GeV/c and the centrality range 70–90%, and establishing an excess with a significance greater than 5σ also in the 50–70% and 30–50% centrality ranges. The results are compared with earlier measurements at sNN=2.76 TeV and with different theoretical predictions aiming at describing how coherent photoproduction occurs in hadronic interactions with nuclear overlap.
An excess of J/ψ yield at very low transverse momentum (pT<0.3 GeV/c), originating from coherent photoproduction, is observed in peripheral and semicentral hadronic Pb−Pb collisions at a center-of-mass energy per nucleon pair of sNN−−−√=5.02 TeV. The measurement is performed with the ALICE detector via the dimuon decay channel at forward rapidity (2.5<y<4). The nuclear modification factor at very low pT and the coherent photoproduction cross section are measured as a function of centrality down to the 10% most central collisions. These results extend the previous study at sNN−−−√=2.76 TeV, confirming the clear excess over hadronic production in the pT range 0−0.3 GeV/c and the centrality range 70−90%, and establishing an excess with a significance greater than 5σ also in the 50−70% and 30−50% centrality ranges. The results are compared with earlier measurements at sNN−−−√=2.76 TeV and with different theoretical predictions aiming at describing how coherent photoproduction occurs in hadronic interactions with nuclear overlap.
Understanding the production mechanism of light (anti)nuclei is one of the key challenges of nuclear physics and has important consequences for astrophysics, since it provides an input for indirect dark-matter searches in space. In this paper, the latest results about the production of light (anti)nuclei in pp collisions at s√=13 TeV are presented, focusing on the comparison with the predictions of coalescence and thermal models. For the first time, the coalescence parameters B2 for deuterons and B3 for helions are compared with parameter-free theoretical predictions that are directly constrained by the femtoscopic measurement of the source radius in the same event class. A fair description of the data with a Gaussian wave function is observed for both deuteron and helion, supporting the coalescence mechanism for the production of light (anti)nuclei in pp collisions. This method paves the way for future investigations of the internal structure of more complex nuclear clusters, including the hypertriton.