Refine
Year of publication
Document Type
- Article (464)
- Preprint (256)
- Conference Proceeding (2)
- Working Paper (2)
Has Fulltext
- yes (724)
Is part of the Bibliography
- no (724) (remove)
Keywords
- BESIII (17)
- e +-e − Experiments (13)
- Branching fraction (9)
- LHC (9)
- Particle and Resonance Production (7)
- Quarkonium (7)
- Spectroscopy (6)
- Hadronic decays (5)
- Heavy-ion collisions (5)
- ALICE experiment (4)
- Branching fractions (4)
- Charm Physics (4)
- Exotics (4)
- Lepton colliders (4)
- ALICE (3)
- Charmed mesons (3)
- Charmonium (3)
- Diffraction (3)
- Elastic scattering (3)
- Electroweak interaction (3)
- Experimental nuclear physics (3)
- Experimental particle physics (3)
- Initial state radiation (3)
- Polarization (3)
- e+-e− Experiments (3)
- pp collisions (3)
- Beam Energy Scan (2)
- Beauty production (2)
- Bhabha (2)
- Charm physics (2)
- Chiral Magnetic Effect (2)
- Collectivity (2)
- Correlation (2)
- Cross section (2)
- Electroweak Interaction (2)
- Elliptic flow (2)
- Genetics (2)
- Hadronic cross section (2)
- Hyperons (2)
- Jets (2)
- Leptonic, semileptonic & radiative decays (2)
- Muon anomaly (2)
- Particle decays (2)
- Pb–Pb collisions (2)
- Pion form factor (2)
- Proton (2)
- QCD (2)
- Quark-Gluon Plasma (2)
- RHIC (2)
- Relativistic heavy-ion collisions (2)
- STAR (2)
- Shear viscosity (2)
- Single electrons (2)
- exosomes (2)
- 900 GeV (1)
- ALICE detector (1)
- Absenteeism (1)
- Absolute branching fraction (1)
- Angular distribution (1)
- Animal flight (1)
- Annihilation (1)
- Anti-kaon–nucleon physics (1)
- Anti-nuclei (1)
- Antibodies (1)
- Appendectomy (1)
- Appendicitis (1)
- Athena SWAN (1)
- Autonomic nervous system (1)
- B-slope (1)
- BESIII detector (1)
- Baryonic resonances (1)
- Beam energy scan (1)
- Biodiversity (1)
- Bipolar disorder (1)
- Bird flight (1)
- Born cross section (1)
- Born cross section measurement (1)
- COVID-19 (1)
- CP violation (1)
- CVD biomarker (1)
- Call for action (1)
- Canonical suppression (1)
- Canopy height model (1)
- Carbene Transfer (1)
- Cardiac function (1)
- Caribbean Basin (1)
- Cats (1)
- Charge fluctuations (1)
- Charged-particle multiplicity (1)
- Charm quark spatial diffusion coefficient (1)
- Charmonia (1)
- Charmonium (-like) (1)
- Chickens (1)
- Chiral magnetic effect (1)
- Circadian (1)
- Coalescence (1)
- Cold nuclear matter effects (1)
- Comparison with QCD (1)
- Complicated appendicitis (1)
- Covariance matrix (1)
- Critical point (1)
- Cross section measurements (1)
- D meson (1)
- D0 and D+ mesons (1)
- DNA barcodes (1)
- Dalitz decay (1)
- Dark photon (1)
- Dark sector (1)
- Data sharing (1)
- Dermis (1)
- Deuteron production (1)
- Di-hadron correlations (1)
- Distributed software development (1)
- D⁰ meson (1)
- Effective form factor (1)
- Electrical instability (1)
- Electroencephalography – EEG (1)
- Electromagnetic amplitude (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Electron-pion identification (1)
- Embryos (1)
- Entomology (1)
- Enzyme-linked immunoassays (1)
- Extracellular vesicles (1)
- FOS: Physical sciences (1)
- Feathers (1)
- Femtoscopy (1)
- Fibre/foam sandwich radiator (1)
- Fibroblast growth factor (1)
- Flavor changing neutral currents (1)
- Flavor symmetries (1)
- Flavour Physics (1)
- Flow (1)
- Form factors (1)
- Forward physics (1)
- Freezeout (1)
- Functional magnetic resonance imaging (1)
- Gender (1)
- Geometrical modelling (1)
- Geometrisches Modellieren (1)
- Green fluorescent protein (1)
- Groomed jet radius (1)
- HBT (1)
- Hadron production (1)
- Hadron-Hadron Scattering (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-Hadron scattering (experiments) (1)
- Hadron-hadron interactions (1)
- Hadronization (1)
- Hadrons (1)
- Health research (1)
- Heavy Ion Experiment (1)
- Heavy Ion Experiments (1)
- Heavy Ions (1)
- Heavy Quark Production (1)
- Heavy flavor production (1)
- Heavy flavour production (1)
- Heavy ion collisions (1)
- Heavy ion storage ring (1)
- Heavy-Ion Collision (1)
- Heavy-flavor decay electron (1)
- Heavy-flavour decay muons (1)
- Heavy-flavour production (1)
- Heavy-ion (1)
- Heavy-ion reactions (1)
- High Energy Physics - Experiment (hep-ex) (1)
- Higher moments (1)
- Inclusive branching fraction (1)
- Inclusive spectra (1)
- Intensity interferometry (1)
- Interference fragmentation function (1)
- Invisible decays (1)
- Ionisation energy loss (1)
- J/ψ suppression (1)
- Jet substructure (1)
- Jets and Jet Substructure (1)
- K0S (1)
- Kaonic nuclei (1)
- Kidney neoplasm (1)
- Laparoscopic appendectomy (1)
- Low energy QCD (1)
- Macrophages (1)
- Metal-Metal Multiple Bonds (1)
- Miami blue (1)
- Mid-rapidity (1)
- Minimally invasive surgical procedures (1)
- Molecular biology (1)
- Monoclonal antibodies (1)
- Multi-strange baryons (1)
- Multi-wire proportional drift chamber (1)
- Multiple parton interactions (1)
- NMR spectroscopy (1)
- Nephrectomy (1)
- Net-charge correlations (1)
- Net-charge fluctuations (1)
- Neural network (1)
- Neutrinos (1)
- Non-REM sleep (1)
- Nonflow (1)
- Nuclear modification factor (1)
- Nucleus (1)
- Objectoriented technology (1)
- Objektorientierte Technologie (1)
- Opioids (1)
- Orbital electron capture (1)
- PYTHIA (1)
- Partial wave analysis (1)
- Particle and resonance production (1)
- Particle interactions (1)
- Particle phenomena (1)
- Particle production (1)
- Partikel-Wechselwirkungen (1)
- Path dependency (1)
- Pb–Pb (1)
- Phase (1)
- Phylogenomics (1)
- Population genetics (1)
- Properties of Hadrons (1)
- Proton-proton collisions (1)
- Proton–proton (1)
- Proton–proton collisions (1)
- Psychiatry (1)
- QGP (1)
- Quantum chromodynamics (1)
- Quark Production (1)
- Quark–gluon plasma (1)
- R value (1)
- RNA binding proteins (1)
- Radiative decay (1)
- Rare decays (1)
- Research impact assessment (1)
- Resonances (1)
- Respiratory infections (1)
- Risk stratification (1)
- SARS (1)
- SARS coronavirus (1)
- SARS-CoV-2 (1)
- Science policy (1)
- Seasonal variation (1)
- Semi-leptonic decays (1)
- Simulation (1)
- Single muons (1)
- Single particle decay spectroscopy (1)
- Sleep (1)
- SoftDrop (1)
- Software engineering (1)
- Softwaretechnik (1)
- Solar insolation (1)
- Spin alignment (1)
- Splitting function (1)
- Strangeness (1)
- Strangeness enhancement (1)
- Strong amplitude (1)
- Sudden cardiac death (1)
- Suicide (1)
- Sunlight (1)
- TR (1)
- Techniques Electromagnetic calorimeters (1)
- Thermal model (1)
- Threshold effect (1)
- Tracking (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Transversity (1)
- Trigger (1)
- Triple quarkonia (1)
- Two body weak decay (1)
- UAV (1)
- Uncomplicated appendicitis (1)
- Vector Boson Production (1)
- W-exchange (1)
- West Indies (1)
- Xenon-based gas mixture (1)
- Y (4260) (1)
- Y states (1)
- accessory proteins (1)
- alleles (1)
- autism spectrum disorder (1)
- autistic disorder (1)
- biogeographic legaciese (1)
- biogeography (1)
- branching fractions (1)
- cannabis (1)
- cell-free protein synthesis (1)
- center-of-mass energy (1)
- charmed baryon (1)
- charmonium-like states (1)
- copy number polymorphism (1)
- dE/dx (1)
- decay (1)
- decays (1)
- dimuon (1)
- diphoton (1)
- drone (1)
- e+e − annihilation (1)
- e+e⁻ − Experiments (1)
- e+e− Experiments (1)
- e+e− annihilation (1)
- ectosomes (1)
- electron-positron collision (1)
- extracellular vesicles (1)
- fine spatial resolution remote sensing (1)
- forest classification (1)
- forest functional similarity (1)
- function, sorting (1)
- genes (1)
- genetics (1)
- genome (1)
- genotype (1)
- genotype determination (1)
- global change (1)
- glutamate (1)
- guidelines (1)
- habitat destruction (1)
- hadron spectroscopy (1)
- hadronic events (1)
- heavy-ion collisions (1)
- helicity amplitude analysis (1)
- inclusive J/ψ decays (1)
- intrinsically disordered region (1)
- land use (1)
- luminosity (1)
- mRNA (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- morphology (1)
- non-coding RNA (1)
- nonstructural proteins (1)
- number of J/ψ events (1)
- p+p collisions (1)
- phenotype (1)
- phylogenetic community distance (1)
- plant height (1)
- ppK − (1)
- quantification (1)
- reproducibility (1)
- rigor (1)
- risk factor progression (1)
- risk factors (1)
- single nucleotide polymorphism (1)
- spectra (1)
- standardization (1)
- structural proteins (1)
- structure-from-motion photogrammetry (1)
- taxonomy (1)
- tetraquark (1)
- tolerance (1)
- trigger efficiency (1)
- tropical forests (1)
- Λ+c baryon (1)
- Λc⁺ (1)
- Σ hyperon (1)
- Υ suppression (1)
- ψ(3686) (1)
- √sN N = 2.76 TeV (1)
Institute
- Physik (565)
- Frankfurt Institute for Advanced Studies (FIAS) (223)
- Informatik (106)
- Medizin (29)
- Biowissenschaften (4)
- Geowissenschaften (3)
- Informatik und Mathematik (3)
- Biochemie und Chemie (2)
- Biodiversität und Klima Forschungszentrum (BiK-F) (2)
- ELEMENTS (2)
The differential cross section for 𝑍0 production, measured as a function of the boson’s transverse momentum (𝑝T), provides important constraints on the evolution of the transverse momentum dependent parton distribution functions (TMDs). The transverse single spin asymmetry (TSSA) of the 𝑍0 is sensitive to one of the polarized TMDs, the Sivers function, which is predicted to have the opposite sign in 𝑝 + 𝑝 → 𝑊 ∕𝑍 + 𝑋 from that which enters in semi-inclusive deep inelastic scattering. In this Letter, the STAR Collaboration reports the first measurement of the 𝑍0∕𝛾∗ differential cross section as a function of its 𝑝T in 𝑝+𝑝 collisions at a center-of-mass energy of 510 GeV, together with the 𝑍0∕𝛾∗ total cross section. We also report the measurement of 𝑍0∕𝛾∗ TSSA in transversely polarized 𝑝+𝑝 collisions at 510 GeV.
he first measurements of the invariant differential cross sections of inclusive π0 and η meson production at mid-rapidity in proton–proton collisions at s=0.9 TeV and s=7 TeV are reported. The π0 measurement covers the ranges 0.4<pT<7 GeV/c and 0.3<pT<25 GeV/c for these two energies, respectively. The production of η mesons was measured at s=√7 TeV in the range 0.4<pT<15 GeV/c. Next-to-Leading Order perturbative QCD calculations, which are consistent with the π0 spectrum at s=0.9 TeV, overestimate those of π0 and η mesons at s=√7 TeV, but agree with the measured η/π0 ratio at s=√7 TeV.
The ALICE experiment has measured low-mass dimuon production in pp collisions at √s=7 TeV in the dimuon rapidity region 2.5<y<4. The observed dimuon mass spectrum is described as a superposition of resonance decays (η,ρ,ω,η′,ϕ) into muons and semi-leptonic decays of charmed mesons. The measured production cross sections for ω and ϕ are σω(1<pt<5 GeV/c,2.5<y<4)=5.28±0.54(stat)±0.49(syst) mb and σϕ(1<pt<5 GeV/c,2.5<y<4)=0.940±0.084(stat)±0.076(syst) mb. The differential cross sections d2σ/dydpt are extracted as a function of pt for ω and ϕ. The ratio between the ρ and ω cross section is obtained. Results for the ϕ are compared with other measurements at the same energy and with predictions by models.
Heavy flavour decay muon production at forward rapidity in proton–proton collisions at √s=7 TeV
(2012)
The production of muons from heavy flavour decays is measured at forward rapidity in proton–proton collisions at √s=7 TeV collected with the ALICE experiment at the LHC. The analysis is carried out on a data sample corresponding to an integrated luminosity Lint=16.5 nb−1. The transverse momentum and rapidity differential production cross sections of muons from heavy flavour decays are measured in the rapidity range 2.5<y<4, over the transverse momentum range 2<pt<12 GeV/c. The results are compared to predictions based on perturbative QCD calculations.
The ALICE Collaboration reports the measurement of the relative J/ψ yield as a function of charged particle pseudorapidity density dNch/dη in pp collisions at √s=7 TeV at the LHC. J/ψ particles are detected for pt>0, in the rapidity interval |y|<0.9 via decay into e+e−, and in the interval 2.5<y<4.0 via decay into μ+μ− pairs. An approximately linear increase of the J/ψ yields normalized to their event average (dNJ/ψ/dy)/〈dNJ/ψ/dy〉 with (dNch/dη)/〈dNch/dη〉 is observed in both rapidity ranges, where dNch/dη is measured within |η|<1 and pt>0. In the highest multiplicity interval with 〈dNch/dη(bin)〉=24.1, corresponding to four times the minimum bias multiplicity density, an enhancement relative to the minimum bias J/ψ yield by a factor of about 5 at 2.5<y<4 (8 at |y|<0.9) is observed.
The study of the azimuthal anisotropy of inclusive muons produced in p–Pb collisions at √sNN=8.16 TeV, using the ALICE detector at the LHC is reported. The measurement of the second-order Fourier coefficient of the particle azimuthal distribution, v2, is performed as a function of transverse momentum pT in the 0–20% high-multiplicity interval at both forward (2.03<yCMS<3.53) and backward (−4.46<yCMS<−2.96) rapidities over a wide pT range, 0.5<pT<10 GeV/c, in which a dominant contribution of muons from heavy-flavour hadron decays is expected at pT>2 GeV/c. The v2 coefficient of inclusive muons is extracted using two different techniques, namely two-particle cumulants, used for the first time for heavy-flavour measurements, and forward–central two-particle correlations. Both techniques give compatible results. A positive v2 is measured at both forward and backward rapidities with a significance larger than 4.7σ and 7.6σ, respectively, in the interval 2<pT<6 GeV/c. Comparisons with previous measurements in p–Pb collisions at √sNN=5.02 TeV, and with AMPT and CGC-based theoretical calculations are discussed. The findings impose new constraints on the theoretical interpretations of the origin of the collective behaviour in small collision systems.
Measurements of the elliptic flow coefficient relative to the collision plane defined by the spectator neutrons v2{ΨSP} in collisions of Pb ions at center-of-mass energy per nucleon–nucleon pair sNN=2.76 TeV and Xe ions at sNN=5.44 TeV are reported. The results are presented for charged particles produced at midrapidity as a function of centrality and transverse momentum for the 5–70% and 0.2–6 GeV/c ranges, respectively. The ratio between v2{ΨSP} and the elliptic flow coefficient relative to the participant plane v2{4}, estimated using four-particle correlations, deviates by up to 20% from unity depending on centrality. This observation differs strongly from the magnitude of the corresponding eccentricity ratios predicted by the TRENTo and the elliptic power models of initial state fluctuations that are tuned to describe the participant plane anisotropies. The differences can be interpreted as a decorrelation of the neutron spectator plane and the reaction plane because of fragmentation of the remnants from the colliding nuclei, which points to an incompleteness of current models describing the initial state fluctuations. A significant transverse momentum dependence of the ratio v2{ΨSP}/v2{4} is observed in all but the most central collisions, which may help to understand whether momentum anisotropies at low and intermediate transverse momentum have a common origin in initial state fluctuations. The ratios of v2{ΨSP} and v2{4} to the corresponding initial state eccentricities for Xe–Xe and Pb–Pb collisions at similar initial entropy density show a difference of (7.0±0.9)% with an additional variation of +1.8% when including RHIC data in the TRENTo parameter extraction. These observations provide new experimental constraints for viscous effects in the hydrodynamic modeling of the expanding quark–gluon plasma produced in heavy-ion collisions at the LHC.
The production yields of non-prompt Ds+ mesons, namely Ds+ mesons from beauty-hadron decays, were measured for the first time as a function of the transverse momentum (pT) at midrapidity (|y|<0.5) in central and semi-central Pb−Pb collisions at a centre-of-mass energy per nucleon pair sNN−−−√=5.02 TeV with the ALICE experiment at the LHC. The Ds+ mesons and their charge conjugates were reconstructed from the hadronic decay channel Ds+→ϕπ+, with ϕ→K−K+, in the 4<pT<36 GeV/c and 2<pT<24 GeV/c intervals for the 0−10% and 30−50% centrality classes, respectively. The measured yields of non-prompt Ds+ mesons are compared to those of prompt Ds+ and non-prompt D0 mesons by calculating the ratios of the production yields in Pb−Pb collisions and the nuclear modification factor RAA. The ratio between the RAA of non-prompt Ds+ and prompt Ds+ mesons, and that between the RAA of non-prompt Ds+ and non-prompt D0 mesons in central Pb−Pb collisions are found to be on average higher than unity in the 4<pT<12 GeV/c interval with a statistical significance of about 1.6σ and 1.7σ, respectively. The measured RAA ratios are compared with the predictions of theoretical models of heavy-quark transport in a hydrodynamically expanding QGP that incorporate hadronisation via quark recombination.
This letter reports measurements which characterize the underlying event associated with hard scatterings at mid-pseudorapidity (|η|<0.8) in pp, p−Pb and Pb−Pb collisions at centre-of-mass energy per nucleon pair, sNN−−−√=5.02 TeV. The measurements are performed with ALICE at the LHC. Different multiplicity classes are defined based on the event activity measured at forward rapidities. The hard scatterings are identified by the leading particle defined as the charged particle with the largest transverse momentum (pT) in the collision and having 8<pT<15 GeV/c. The pT spectra of associated particles (0.5≤pT<6 GeV/c) are measured in different azimuthal regions defined with respect to the leading particle direction: toward, transverse, and away. The associated charged particle yields in the transverse region are subtracted from those of the away and toward regions. The remaining jet-like yields are reported as a function of the multiplicity measured in the transverse region. The measurements show a suppression of the jet-like yield in the away region and an enhancement of high-pT associated particles in the toward region in central Pb−Pb collisions, as compared to minimum-bias pp collisions. These observations are consistent with previous measurements that used two-particle correlations, and with an interpretation in terms of parton energy loss in a high-density quark gluon plasma. These yield modifications vanish in peripheral Pb−Pb collisions and are not observed in either high-multiplicity pp or p−Pb collisions.
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.