Refine
Year of publication
Document Type
- Preprint (656)
- Article (510)
- Part of Periodical (21)
- Book (1)
- Conference Proceeding (1)
- Working Paper (1)
Language
- English (1190) (remove)
Has Fulltext
- yes (1190)
Is part of the Bibliography
- no (1190)
Keywords
- Heavy Ion Experiments (20)
- Hadron-Hadron Scattering (11)
- Hadron-Hadron scattering (experiments) (11)
- LHC (9)
- Heavy-ion collision (6)
- ALICE experiment (4)
- Collective Flow (4)
- Jets (4)
- Quark-Gluon Plasma (4)
- ALICE (3)
- Heavy Ions (3)
- Jets and Jet Substructure (3)
- pp collisions (3)
- Beauty production (2)
- Charm physics (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Heavy Quark Production (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- Pb–Pb collisions (2)
- QCD (2)
- Quarkonium (2)
- RHIC (2)
- Single electrons (2)
- Suicide (2)
- 900 GeV (1)
- ALICE detector (1)
- ALL (1)
- AML (1)
- Abdominal infections (1)
- Acute calcolous cholecystitis (1)
- Advanced biliary tract cancer (1)
- Animal flight (1)
- Anti-nuclei (1)
- Antibiotic (1)
- BTC (1)
- Biliary tree stones (1)
- Biological (1)
- Biomarker (1)
- Bipolar disorder (1)
- Bird flight (1)
- Boosted Jets (1)
- Breast cancer (1)
- COVID-19 (1)
- CTLA-4 (1)
- CVID (1)
- Caccoleptus (Bicaccoleptus) kacka, Nearctic region (1)
- Canopy height model (1)
- Centrality Class (1)
- Centrality Selection (1)
- Charged-particle multiplicity (1)
- Charmonia (1)
- Chickens (1)
- Cholecystectomy (1)
- Circadian (1)
- Closure (1)
- Cold nuclear matter effects (1)
- Collective Flow, (1)
- Collectivity (1)
- Combined immune checkpoint blockade (1)
- Comparison with QCD (1)
- Correlation (1)
- Data sharing (1)
- Dermis (1)
- Di-hadron correlations (1)
- Diagnosis (1)
- Diffraction (1)
- Digital (1)
- Digital breast tomosynthesis (DBT) (1)
- Digital mammography (1)
- Elastic scattering (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Elliptic flow (1)
- Embryos (1)
- Endoscopic ultrasound (1)
- Equity (1)
- European Society for Immunodeficiencies (ESID) (1)
- Feathers (1)
- Femtoscopy (1)
- Fibre/foam sandwich radiator (1)
- Fibroblast growth factor (1)
- Fistula (1)
- Flow (1)
- GWAS (1)
- Gallbladder percutaneous drainage (1)
- German PID-NET registry (1)
- Green fluorescent protein (1)
- Groomed jet radius (1)
- Guadeloupe Archipelago (1)
- Guidelines (1)
- HBT (1)
- Hadron production (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hand-foot syndrome (1)
- Hard Scattering (1)
- Heavy Ion Experiment (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Heavy-ion (1)
- Heavy-ion collisions (1)
- Hif1α (1)
- IgG substitution therapy (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Interference fragmentation function (1)
- Intra-abdominal infection (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Ipilimumab (1)
- J/ψ suppression (1)
- Jet Physics (1)
- Jet Substructure (1)
- Jet substructure (1)
- Laparostomy (1)
- Lifestyle (1)
- MLL (1)
- Macrotomini (1)
- Magnetic resonance (1)
- Material budget (1)
- Mesh (1)
- Mid-rapidity (1)
- Minimum Bias (1)
- Monitoring (1)
- Monte Carlo (1)
- Multi-Parton Interactions (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Multiple parton interactions (1)
- Neural network (1)
- Nivolumab (1)
- Non-trauma (1)
- Nonflow (1)
- Nuclear modification factor (1)
- Nutrition (1)
- Open abdomen (1)
- PD-1 (1)
- PDGFRβ (1)
- PID prevalence (1)
- PYTHIA (1)
- Pancreatitis (1)
- Pandemic (1)
- Particle and Resonance Production (1)
- Patient safety (1)
- Pb–Pb (1)
- Peritonitis (1)
- Polarization (1)
- Population-based screening (1)
- Poverty (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Proton-proton collisions (1)
- Proton–proton (1)
- Psychiatry (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Rapidity Range (1)
- Re-exploration (1)
- Recall rate (1)
- Reintervention (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Resolution Parameter (1)
- Rhaphipodini (1)
- STAR (1)
- Seasonal variation (1)
- Seed beetles (1)
- Shear viscosity (1)
- Single muons (1)
- Social determinants (1)
- SoftDrop (1)
- Solar insolation (1)
- Sorafenib (1)
- Spin alignment (1)
- Spine care (1)
- Splitting function (1)
- Standardization (1)
- Sunlight (1)
- Surgical risk (1)
- Synthetic (1)
- Systematic Uncertainty (1)
- TR (1)
- Technique (1)
- Time Projection Chamber (1)
- Timing (1)
- Tracking (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Transversity (1)
- Trauma (1)
- Trigger (1)
- UAV (1)
- Uveal melanoma (1)
- VEGFR-2 (1)
- VEGFR-3 (1)
- Vascular emergencies (1)
- Vector Boson Production (1)
- Xenon-based gas mixture (1)
- acute leukemia (1)
- alleles (1)
- antiepileptic drugs (1)
- autism spectrum disorder (1)
- autistic disorder (1)
- beetle species (1)
- biogeographic legaciese (1)
- c-kit (1)
- chromosomal translocations (1)
- copy number polymorphism (1)
- dE/dx (1)
- detector (1)
- dexamethasone (1)
- drone (1)
- ectosomes (1)
- exosomes (1)
- experimental results (1)
- extracellular vesicles (1)
- fine spatial resolution remote sensing (1)
- forest classification (1)
- forest functional similarity (1)
- genes (1)
- genetic generalized epilepsy (1)
- genetics (1)
- genome (1)
- genotype (1)
- genotype determination (1)
- glioma microenvironment (1)
- global change (1)
- guidelines (1)
- habitat destruction (1)
- heavy ion experiments (1)
- host plants (1)
- immune checkpoint blockade (1)
- immune infiltration (1)
- kidney function (1)
- lamotrigine (1)
- land use (1)
- levetiracetam (1)
- liver metastasis (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- new species (1)
- p+p collisions (1)
- peritumoral edema (1)
- peritumoral edema zone (1)
- pharmacoresistance (1)
- phenotype (1)
- phylogenetic community distance (1)
- plant height (1)
- primary immunodeficiency (PID) (1)
- prognosis (1)
- quark gluon plasma (1)
- registry for primary immunodeficiency (1)
- reproducibility (1)
- rigor (1)
- single nucleotide polymorphism (1)
- spectra (1)
- standardization (1)
- stroke (1)
- structure-from-motion photogrammetry (1)
- systematics (1)
- taxonomy (1)
- translocation partner genes (1)
- treatment resistance (1)
- tropical forests (1)
- uveal melanoma (1)
- valproic acid (1)
- √sN N = 2.76 TeV (1)
Institute
- Physik (1090)
- Frankfurt Institute for Advanced Studies (FIAS) (944)
- Informatik (909)
- Medizin (28)
- Geowissenschaften (21)
- Extern (4)
- Informatik und Mathematik (3)
- Biodiversität und Klima Forschungszentrum (BiK-F) (2)
- Hochschulrechenzentrum (2)
- Institut für Ökologie, Evolution und Diversität (2)
- Biochemie und Chemie (1)
- Biowissenschaften (1)
- Center for Financial Studies (CFS) (1)
- ELEMENTS (1)
- Geographie (1)
- Georg-Speyer-Haus (1)
- House of Finance (HoF) (1)
- Sustainable Architecture for Finance in Europe (SAFE) (1)
- Wirtschaftswissenschaften (1)
The measurement of the production of deuterons, tritons and 3He and their antiparticles in Pb-Pb collisions at √sNN = 5.02 TeV is presented in this article. The measurements are carried out at midrapidity (y|< 0.5) as a function of collision centrality using the ALICE detector. The pT-integrated yields, the coalescence parameters and the ratios to protons and antiprotons are reported and compared with nucleosynthesis models. The comparison of these results in different collision systems at different center-of-mass collision energies reveals a suppression of nucleus production in small systems. In the Statistical Hadronisation Model framework, this can be explained by a small correlation volume where the baryon number is conserved, as already shown in previous fluctuation analyses. However, a different size of the correlation volume is required to describe the proton yields in the same data sets. The coalescence model can describe this suppression by the fact that the wave functions of the nuclei are large and the fireball size starts to become comparable and even much smaller than the actual nucleus at low multiplicities.
The measurement of the production of f0(980) in inelastic pp collisions at √s=5.02 TeV is presented. This is the first reported measurement of inclusive f0(980) yield at LHC energies. The production is measured at midrapidity, |y|<0.5, in a wide transverse momentum range, 0<pT<16 GeV/c, by reconstructing the resonance in the f0(980) →π+π− hadronic decay channel using the ALICE detector. The pT-differential yields are compared to those of pions, protons and ϕ mesons as well as to predictions from the HERWIG 7.2 QCD-inspired Monte Carlo event generator and calculations from a coalescence model that uses the AMPT model as an input. The ratio of the pT-integrated yield of f0(980) relative to pions is compared to measurements in e+e− and pp collisions at lower energies and predictions from statistical hadronisation models and HERWIG 7.2. A mild collision energy dependence of the f0(980) to pion production is observed in pp collisions from SPS to LHC energies. All considered models underpredict the pT-integrated 2f0(980)/(π+ +π−) ratio. The prediction from the canonical statistical hadronisation model assuming a zero total strangeness content of f0(980) is consistent with the data within 1.9σ and is the closest to the data. The results provide an essential reference for future measurements of the particle yield and nuclear modification in p–Pb and Pb–Pb collisions, which have been proposed to be instrumental to probe the elusive nature and quark composition of the f0(980) scalar meson.
Hadronic resonances are used to probe the hadron gas produced in the late stage of heavy-ion collisions since they decay on the same timescale, of the order of 1 to 10 fm/c, as the decoupling time of the system. In the hadron gas, (pseudo)elastic scatterings among the products of resonances that decayed before the kinetic freeze-out and regeneration processes counteract each other, the net effect depending on the resonance lifetime, the duration of the hadronic phase, and the hadronic cross sections at play. In this context, the Σ(1385)± particle is of particular interest as models predict that regeneration dominates over rescattering despite its relatively short lifetime of about 5.5 fm/c. The first measurement of the Σ(1385)± resonance production at midrapidity in Pb-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector is presented in this Letter. The resonances are reconstructed via their hadronic decay channel, Λπ, as a function of the transverse momentum (pT) and the collision centrality. The results are discussed in comparison with the measured yield of pions and with expectations from the statistical hadronization model as well as commonly employed event generators, including PYTHIA8/Angantyr and EPOS3 coupled to the UrQMD hadronic cascade afterburner. None of the models can describe the data. For Σ(1385)±, a similar behaviour as K∗(892)0 is observed in data unlike the predictions of EPOS3 with afterburner.
The production of inclusive, prompt and non-prompt J/ψ was studied for the first time at midrapidity (−1.37<ycms<0.43) in p−Pb collisions at √sNN =8.16 TeV with the ALICE detector at the LHC. The inclusive J/ψ mesons were reconstructed in the dielectron decay channel in the transverse momentum (pT) interval 0<pT<14 GeV/c and the prompt and non-prompt contributions were separated on a statistical basis for pT>2 GeV/c. The study of the J/ψ mesons in the dielectron channel used for the first time in ALICE online single-electron triggers from the Transition Radiation Detector, providing a data sample corresponding to an integrated luminosity of 689±13μb−1. The proton−proton reference cross section for inclusive J/ψ was obtained based on interpolations of measured data at different centre-of-mass energies and a universal function describing the pT-differential J/ψ production cross sections. The pT-differential nuclear modification factors RpPb of inclusive, prompt, and non-prompt J/ψ are consistent with unity and described by theoretical models implementing only nuclear shadowing.
The production of inclusive, prompt and non-prompt J/ψ was studied for the first time at midrapidity (−1.37 < ycms < 0.43) in p-Pb collisions at √sNN = 8.16 TeV with the ALICE detector at the LHC. The inclusive J/ψ mesons were reconstructed in the dielectron decay channel in the transverse momentum (pT) interval 0 < pT < 14 GeV/c and the prompt and non-prompt contributions were separated on a statistical basis for pT > 2 GeV/c. The study of the J/ψ mesons in the dielectron channel used for the first time in ALICE online single-electron triggers from the Transition Radiation Detector, providing a data sample corresponding to an integrated luminosity of 689 ± 13 μb−1. The proton-proton reference cross section for inclusive J/ψ was obtained based on interpolations of measured data at different centre-of-mass energies and a universal function describing the pT-differential J/ψ production cross sections. The pT-differential nuclear modification factors RpPb of inclusive, prompt, and non-prompt J/ψ are consistent with unity and described by theoretical models implementing only nuclear shadowing.
Femtoscopic correlations of non-identical charged kaons (K+K−) are studied in Pb−Pb collisions at a center-of-mass energy per nucleon−nucleon collision sNN−−−√=2.76 TeV by ALICE at the LHC. One-dimensional K+K− correlation functions are analyzed in three centrality classes and eight intervals of particle-pair transverse momentum. The Lednický and Luboshitz interaction model used in the K+K− analysis includes the final-state Coulomb interactions between kaons and the final-state interaction through a0(980) and f0(980) resonances. The mass of f0(980) and coupling were extracted from the fit to K+K− correlation functions using the femtoscopic technique for the first time. The measured mass and width of the f0(980) resonance are consistent with other published measurements. The height of the ϕ(1020) meson peak present in the K+K− correlation function rapidly decreases with increasing source radius, qualitatively in agreement with an inverse volume dependence. A phenomenological fit to this trend suggests that the ϕ(1020) meson yield is dominated by particles produced directly from the hadronization of the system. The small fraction subsequently produced by FSI could not be precisely quantified with data presented in this paper and will be assessed in future work.
Two-particle transverse momentum differential correlators, recently measured in Pb-Pb collisions at LHC energies, provide an additional tool to gain insights into particle production mechanisms and infer transport properties, such as the ratio of shear viscosity to entropy density, of the medium created in Pb-Pb collisions. The longitudinal long-range correlations and the large azimuthal anisotropy measured at low transverse momenta in small collision systems, namely pp and p-Pb, at LHC energies resemble manifestations of collective behaviour. This suggests that locally equilibrated matter may be produced in these small collision systems, similar to what is observed in Pb-Pb collisions. In this work, the same two-particle transverse momentum differential correlators are exploited in pp and p-Pb collisions at s√=7 TeV and sNN−−−√=5.02 TeV, respectively, to seek evidence for viscous effects. Specifically, the strength and shape of the correlators are studied as a function of the produced particle multiplicity to identify evidence for longitudinal broadening that might reveal the presence of viscous effects in these smaller systems. The measured correlators and their evolution from pp and p-Pb to Pb-Pb collisions are additionally compared to predictions from Monte Carlo event generators, and the potential presence of viscous effects is discussed.
The most precise measurements to date of the 3ΛH lifetime τ and Λ separation energy BΛ are obtained using the data sample of Pb-Pb collisions at √sNN = 5.02 TeV collected by ALICE at the LHC. The 3ΛH is reconstructed via its charged two-body mesonic decay channel (3ΛH → 3He + π− and the charge-conjugate process). The measured values τ = [253 ± 11 (stat) ± 6 (syst)] ps and BΛ = [102 ± 63 (stat) ± 67 (syst)] keV are compatible with predictions from effective field theories and confirm that the 3ΛH structure is consistent with a weakly bound system.
The most precise measurements to date of the 3ΛH lifetime τ and Λ separation energy BΛ are obtained using the data sample of Pb-Pb collisions at √= 5.02 TeV collected by ALICE at the LHC. The 3ΛH is reconsNN structed via its charged two-body mesonic decay channel (3ΛH→ 3He + π− and the charge-conjugate process). The measured values τ=[253±11 (stat.)±6 (syst.)] ps and BΛ=[102±63 (stat.)±67 (syst.)] keV are compatible with predictions from effective field theories and confirm that the 3ΛH structure is consistent with a weakly-bound system.
This letter reports the first measurement of spin alignment, with respect to the helicity axis, for D⁎+ vector mesons and their charge conjugates from charm-quark hadronisation (prompt) and from beauty-meson decays (non-prompt) in hadron collisions. The measurements were performed at midrapidity (|y|<0.8) as a function of transverse momentum (pT) in proton–proton (pp) collisions collected by ALICE at the centre-of-mass energy √s=13TeV. The diagonal spin density matrix element ρ00 of D⁎+ mesons was measured from the angular distribution of the D⁎+→D0(→K−π+)π+ decay products, in the D⁎+ rest frame, with respect to the D⁎+ momentum direction in the pp centre of mass frame. The ρ00 value for prompt D⁎+ mesons is consistent with 1/3, which implies no spin alignment. However, for non-prompt D⁎+ mesons an evidence of ρ00 larger than 1/3 is found. The measured value of the spin density element is ρ00=0.455±0.022(stat.)±0.035(syst.) in the 5<pT<20GeV/c interval, which is consistent with a Pythia 8 Monte Carlo simulation coupled with the EvtGen package, which implements the helicity conservation in the decay of D⁎+ meson from beauty mesons. In non-central heavy-ion collisions, the spin of the D⁎+ mesons may be globally aligned with the direction of the initial angular momentum and magnetic field. Based on the results for pp collisions reported in this letter it is shown that alignment of non-prompt D⁎+ mesons due to the helicity conservation coupled to the collective anisotropic expansion may mimic the signal of global spin alignment in heavy-ion collisions.