Refine
Year of publication
Document Type
- Preprint (206)
- Article (173)
- Part of Periodical (3)
Language
- English (382)
Has Fulltext
- yes (382)
Is part of the Bibliography
- no (382)
Keywords
- BESIII (14)
- Branching fraction (9)
- e +-e − Experiments (9)
- Hadronic decays (5)
- Particle and Resonance Production (5)
- new species (5)
- Branching fractions (4)
- Charm physics (4)
- Lepton colliders (4)
- Charm Physics (3)
- Charmed mesons (3)
- Charmonium (3)
- Ctenopelmatinae (3)
- Electroweak interaction (3)
- Hadron-Hadron Scattering (3)
- Heavy Ions (3)
- Initial state radiation (3)
- QCD (3)
- Quarkonium (3)
- Spectroscopy (3)
- key (3)
- taxonomy (3)
- ALICE experiment (2)
- Bhabha (2)
- Cross section (2)
- Electroweak Interaction (2)
- Exotics (2)
- Hadronic cross section (2)
- Key (2)
- LHC (2)
- Leptonic, semileptonic & radiative decays (2)
- Muon anomaly (2)
- Particle decays (2)
- Pion form factor (2)
- e+-e− Experiments (2)
- Alexeter (1)
- Angular distribution (1)
- Annihilation (1)
- BESIII detector (1)
- Beauty production (1)
- Bone and joint mechanics (1)
- Born cross section measurement (1)
- CP violation (1)
- Campodorus (1)
- Centrality Class (1)
- Centrality Selection (1)
- Cerambycidae (1)
- Charmonium (-like) (1)
- Covariance matrix (1)
- Cross section measurements (1)
- Ctenopelma (1)
- D meson (1)
- D0 and D+ mesons (1)
- Dalitz decay (1)
- Dark photon (1)
- Dark sector (1)
- Dolichomitus (1)
- D⁰ meson (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Elliptic flow (1)
- Ephialtini (1)
- Experimental nuclear physics (1)
- Experimental particle physics (1)
- FOS: Physical sciences (1)
- Flavor changing neutral currents (1)
- Flavor symmetries (1)
- Flavour Physics (1)
- Form factors (1)
- Hadrons (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Heavy-ion collision (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Hyperons (1)
- Invariant Mass Distribution (1)
- Invisible decays (1)
- Jets (1)
- Juglans mandshurica (1)
- Lepidoptera (1)
- Linear regression analysis (1)
- Mathematical models (1)
- Menesia flavotecta (1)
- Mesoleiini (1)
- Mesosa myops (1)
- Minimum Bias (1)
- Monte Carlo (1)
- Neutrinos (1)
- Notosemus (1)
- Oedicephalini (1)
- Particle phenomena (1)
- Pb–Pb collisions (1)
- Polarization (1)
- Production Cross Section (1)
- Prognosis (1)
- Proton (1)
- Quantum chromodynamics (1)
- Quark gluon plasma (1)
- R value (1)
- Radiative decay (1)
- Rapidity Range (1)
- Rare decays (1)
- Relativistic heavy ion physics (1)
- Resolution Parameter (1)
- Semi-leptonic decays (1)
- Single electrons (1)
- Statistical data (1)
- Surgeons (1)
- Switzerland (1)
- Systematic Uncertainty (1)
- Techniques Electromagnetic calorimeters (1)
- Time Projection Chamber (1)
- Torque (1)
- Triple quarkonia (1)
- Xoridinae (1)
- Y (4260) (1)
- Y states (1)
- Zeiraphera griseana (1)
- center-of-mass energy (1)
- charmonium-like states (1)
- dimuon (1)
- diphoton (1)
- e+e − annihilation (1)
- e+e− Experiments (1)
- e+e− annihilation (1)
- electron-positron collision (1)
- hadron spectroscopy (1)
- hadronic events (1)
- helicity amplitude analysis (1)
- host (1)
- inclusive J/ψ decays (1)
- luminosity (1)
- number of J/ψ events (1)
- pp collisions (1)
- tetraquark (1)
- trigger efficiency (1)
- Λ+c baryon (1)
- Σ hyperon (1)
Institute
- Physik (375)
- Frankfurt Institute for Advanced Studies (FIAS) (190)
- Informatik (189)
- Hochschulrechenzentrum (1)
- Medizin (1)
Transverse momentum (pT) spectra of pions, kaons, and protons up to pT=20 GeV/c have been measured in Pb-Pb collisions at sNN−−−√=2.76 TeV using the ALICE detector for six different centrality classes covering 0-80%. The proton-to-pion and the kaon-to-pion ratios both show a distinct peak at pT≈3 GeV/c in central Pb-Pb collisions that decreases towards more peripheral collisions. For pT>10 GeV/c, the nuclear modification factor is found to be the same for all three particle species in each centrality interval within systematic uncertainties of 10-20%. This suggests there is no direct interplay between the energy loss in the medium and the particle species composition in the hard core of the quenched jet. For pT<10 GeV/c, the data provide important constraints for models aimed at describing the transition from soft to hard physics.
Direct photon production at mid-rapidity in Pb–Pb collisions at √sNN=2.76 TeV was studied in the transverse momentum range 0.9<pT<14 GeV/c. Photons were detected with the highly segmented electromagnetic calorimeter PHOS and via conversions in the ALICE detector material with the e+e− pair reconstructed in the central tracking system. The results of the two methods were combined and direct photon spectra were measured for the 0–20%, 20–40%, and 40–80% centrality classes. For all three classes, agreement was found with perturbative QCD calculations for pT≳5 GeV/c. Direct photon spectra down to pT≈1 GeV/c could be extracted for the 20–40% and 0–20% centrality classes. The significance of the direct photon signal for 0.9<pT<2.1 GeV/c is 2.6σ for the 0–20% class. The spectrum in this pT range and centrality class can be described by an exponential with an inverse slope parameter of (297±12stat±41syst) MeV. State-of-the-art models for photon production in heavy-ion collisions agree with the data within uncertainties.