Refine
Year of publication
Document Type
- Preprint (666)
- Article (453)
- Working Paper (4)
- Conference Proceeding (2)
Has Fulltext
- yes (1125)
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)
- regulatory arbitrage (3)
- Beauty production (2)
- Capital Markets Union (2)
- Central Counterparties (2)
- Charm physics (2)
- EMIR (2)
- European Supervisory Architecture (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Gender (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)
- Single electrons (2)
- bibliometry (2)
- scientometry (2)
- supervisory arbitrage (2)
- 1H and 13C NMR Spectroscopy (1)
- 4,4’-Disubstituted 2,2’-Bipyridines (1)
- 900 GeV (1)
- ALICE detector (1)
- ALK-rearranged NSCLC (1)
- Aldehydes (1)
- Allergen immunotherapy (1)
- Allergoid (1)
- Allogeneic hematopoietic stem (1)
- Anandamide (1)
- Anti-nuclei (1)
- Anti-seizure medication (1)
- Artesunate (1)
- Auric nanoparticles (1)
- Back pain (1)
- Boosted Jets (1)
- Brexit (1)
- CCL2 (1)
- COVID-19 (1)
- Cancer genomics (1)
- Cardiac output (1)
- Centrality Class (1)
- Centrality Selection (1)
- Cerebral toxoplasmosis HIV (1)
- Change Management (1)
- Chemical company (1)
- Chimerism (1)
- Citation (1)
- Citationrate (1)
- Clinical study (1)
- Collective Flow, (1)
- Comparative analysis (1)
- Comparison with QCD (1)
- Crohn’s disease (1)
- Cross-sectional study (1)
- Crystal Structure (1)
- Cumulative dose (1)
- Curvilinear dose response (1)
- Deep neural network (1)
- Density equalizing mapping (1)
- Density-equalizing mapping (1)
- Depression (1)
- Diabetes mellitus (1)
- Diagnosis (1)
- Diffusion of Innovations (1)
- Disabling back pain (1)
- ETS (1)
- Echocardiography (1)
- Economic benchmarks (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Elliptic flow (1)
- Emotions (1)
- Epilepsy (1)
- Europe (1)
- Everolimus (1)
- Experimental models of disease (1)
- Faculty Development (1)
- Falciparum (1)
- Femtoscopy (1)
- Fibre/foam sandwich radiator (1)
- First-line regimen (1)
- Gamma spectroscopy (1)
- Germany (1)
- Gestational diabetes (1)
- Gold (1)
- Gradient boosting (1)
- Grass pollen (1)
- Ground-state transition width (1)
- Guidelines (1)
- H-Index (1)
- HBT (1)
- HDAC4 (1)
- HIV (1)
- HPV (1)
- Hadron production (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hard Scattering (1)
- Head and neck Cancer (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 collisions (1)
- Hemodynamic management (1)
- High-energy neutron detection (1)
- Hydroquinone (1)
- In-vivo (1)
- Inclusive spectra (1)
- Inflammation (1)
- Intensity interferometry (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- Late presentation (1)
- Lee-type (1)
- Lymphadenopathy (1)
- Lymphocytes (1)
- Lymphoid tissues (1)
- Malaria (1)
- Material budget (1)
- Medical Education (1)
- Medizindidaktik (1)
- Mental health and psychiatry (1)
- Mid-rapidity (1)
- Minimal residual disease (1)
- Minimum Bias (1)
- Monte Carlo (1)
- Multi-Parton Interactions (1)
- Multi-neutron detection (1)
- Multi-strange baryons (1)
- Multi-syndrome classification (1)
- Multi-wire proportional drift chamber (1)
- Multinomial logistic regression (1)
- N,O Ligands (1)
- NCoR1 (1)
- NMR spectroscopy (1)
- NOD2 (1)
- NSAIDs (1)
- NSF (1)
- Neural network (1)
- Neurodegenerative syndromes (1)
- Nuclear modification factor (1)
- Nuclear resonance fluorescence (1)
- Occupational medicine (1)
- Oncology (1)
- Opportunistic infections (1)
- Optical properties and devices (1)
- PCP (1)
- PM (1)
- PYTHIA (1)
- Particle and Resonance Production (1)
- Pb–Pb (1)
- Personal- und Organisationsentwicklung (1)
- Pharmacodynamics (1)
- Plasmodium (1)
- Plastic scintillator array (1)
- Pneumocystis jirovecii (1)
- Pre-emptive immunotherapy (1)
- Prevalence (1)
- Prevention (1)
- Production Cross Section (1)
- Properties of Hadrons (1)
- Protein folding (1)
- Proton–proton (1)
- Psychometrics (1)
- Publication (1)
- Pulse contour analysis (1)
- Pulse pressure variation (1)
- Pygmy dipole resonance (1)
- QCD phase diagram (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Quarkonium (1)
- Questionnaires (1)
- Quinhydrone (1)
- Quinine (1)
- Quinones (1)
- RBC (1)
- Random forest (1)
- Rapidity Range (1)
- Reactions with relativistic radioactive beams (1)
- Redoxactive Ligands (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Resolution Parameter (1)
- Respiratory Syncytial Virus (1)
- Rhabdomyoma (1)
- Rheumatoid arthritis (1)
- Rheumatology (1)
- Russian Sanction (1)
- SARS-CoV-2 (1)
- SWIFT (1)
- Salivary gland diseases (1)
- Scientometria (1)
- Scientometrics (1)
- Scientometry (1)
- Seizure (1)
- Self absorption (1)
- Semiquinone (1)
- Severe malaria (1)
- Silicosis (1)
- Single muons (1)
- Solid-state NMR (1)
- Stroke volume variation (1)
- Structured reporting (1)
- Support vector machine (1)
- Systematic Uncertainty (1)
- TP53 mutation status (1)
- TR (1)
- Target validation (1)
- Terahertz optics (1)
- Thermodilution (1)
- Thrombosis (1)
- Time Projection Chamber (1)
- Toxicology (1)
- Tracking (1)
- Transition radiation detector (1)
- Transverse momentum (1)
- Treatment (1)
- Treatment modification (1)
- Treatment protocol (1)
- Trichuris suis ova (1)
- Tridentate Ligands (1)
- Trigger (1)
- Ultrasonography (1)
- Vector Boson Production (1)
- Veränderungsmanagement (1)
- X-Ray Crystallography (1)
- Xenon-based gas mixture (1)
- accessory proteins (1)
- acute coronary syndrome (1)
- acute myeloid leukaemia (1)
- apex (1)
- binary neutron star merger (1)
- binary neutron star mergers (1)
- cART (1)
- cell transplantation (1)
- cell-free protein synthesis (1)
- cigarette (1)
- cigarillos (1)
- citation (1)
- copeptin (1)
- dE/dx (1)
- detector (1)
- equation of state (1)
- experimental results (1)
- financial innovations (1)
- functional outcome (1)
- gadobutrol (1)
- gender studies (1)
- gravitational wave (1)
- gravitational waves (1)
- hadron-quark phase transition (1)
- health information exchange (1)
- health literacy (1)
- heavy ion experiments (1)
- heavy-ion collisions (1)
- helminths (1)
- human papilloma virus (1)
- induction chemotherapy (1)
- innate immunity (1)
- intrinsically disordered region (1)
- leasing (1)
- mTOR inhibitor (1)
- membranous urethra (1)
- mid-term urinary continence (1)
- mortality (1)
- myocardial infarction (1)
- noise intervention measures (1)
- nonstructural proteins (1)
- nursery schools (1)
- occupational health (1)
- particulate matter (1)
- pregnancy (1)
- prostate cancer (1)
- publication (1)
- quality indicators (1)
- quark gluon plasma (1)
- radical prostatectomy (1)
- rare disesases (1)
- registry (1)
- regulation (1)
- renal impairment (1)
- sequential ALK-inhibitor therapy (1)
- smoking (1)
- sound analyses (1)
- spectra (1)
- structural proteins (1)
- tobacco smoke (1)
- transfusion (1)
- troponin (1)
- Übernahme von Innovationen (1)
- π-Interactions (1)
- √sN N = 2.76 TeV (1)
Institute
The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p-Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.
The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p-Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.
The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD also contributes significantly to the track reconstruction and calibration in the central barrel of ALICE. In this paper the design, construction, operation, and performance of this detector are discussed. A pion rejection factor of up to 410 is achieved at a momentum of 1 GeV/c in p–Pb collisions and the resolution at high transverse momentum improves by about 40% when including the TRD information in track reconstruction. The triggering capability is demonstrated both for jet, light nuclei, and electron selection.
Long-range angular correlations on the near and away side in p–Pb collisions at √sNN=5.02 TeV
(2013)
Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5<pT,assoc<pT,trig<4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and pT bins, and the widths show no significant evolution with event multiplicity or pT. These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge.
The measurement of the mass differences for systems bound by the strong force has reached a very high precision with protons and anti-protons1,2. The extension of such measurement from (anti-)baryons to (anti-)nuclei allows one to probe any difference in the interactions between nucleons and anti-nucleons encoded in the (anti-)nuclei masses. This force is a remnant of the underlying strong interaction among quarks and gluons and can be described by effective theories3, but cannot yet be directly derived from quantum chromodynamics. Here we report a measurement of the difference between the ratios of the mass and charge of deuterons (d) and anti-deuterons (), and 3He and nuclei carried out with the ALICE (A Large Ion Collider Experiment)4 detector in Pb–Pb collisions at a centre-of-mass energy per nucleon pair of 2.76 TeV. Our direct measurement of the mass-over-charge differences confirms CPT invariance to an unprecedented precision in the sector of light nuclei5,6. This fundamental symmetry of nature, which exchanges particles with anti-particles, implies that all physics laws are the same under the simultaneous reversal of charge(s) (charge conjugation C), reflection of spatial coordinates (parity transformation P) and time inversion (T).
A measurement of the transverse momentum spectra of jets in Pb-Pb collisions at sNN−−−√=2.76 TeV is reported. Jets are reconstructed from charged particles using the anti-kT jet algorithm with jet resolution parameters R of 0.2 and 0.3 in pseudo-rapidity |η|<0.5. The transverse momentum pT of charged particles is measured down to 0.15 GeV/c which gives access to the low pT fragments of the jet. Jets found in heavy-ion collisions are corrected event-by-event for average background density and on an inclusive basis (via unfolding) for residual background fluctuations and detector effects. A strong suppression of jet production in central events with respect to peripheral events is observed. The suppression is found to be similar to the suppression of charged hadrons, which suggests that substantial energy is radiated at angles larger than the jet resolution parameter R=0.3 considered in the analysis. The fragmentation bias introduced by selecting jets with a high pT leading particle, which rejects jets with a soft fragmentation pattern, has a similar effect on the jet yield for central and peripheral events. The ratio of jet spectra with R=0.2 and R=0.3 is found to be similar in Pb-Pb and simulated PYTHIA pp events, indicating no strong broadening of the radial jet structure in the reconstructed jets with R<0.3.
We present results on transverse momentum (pT) and rapidity (y) differential production cross sections, mean transverse momentum and mean transverse momentum square of inclusive J/ψ and ψ(2S) at forward rapidity (2.5 < y < 4) as well as ψ(2S)-to-J/ψ cross section ratios. These quantities are measured in pp collisions at center of mass energies s√=5.02 and 13 TeV with the ALICE detector. Both charmonium states are reconstructed in the dimuon decay channel, using the muon spectrometer. A comprehensive comparison to inclusive charmonium cross sections measured at s√=2.76, 7 and 8 TeV is performed. A comparison to non-relativistic quantum chromodynamics and fixed-order next-to-leading logarithm calculations, which describe prompt and non-prompt charmonium production respectively, is also presented. A good description of the data is obtained over the full pT range, provided that both contributions are summed. In particular, it is found that for pT > 15 GeV/c the non-prompt contribution reaches up to 50% of the total charmonium yield.
The transverse momentum (pT) spectrum and nuclear modification factor (RAA) of reconstructed jets in 0–10% and 10–30% central Pb–Pb collisions at √sNN = 2.76 TeV were measured. Jets were reconstructed using the anti-kT jet algorithm with a resolution parameter of R = 0.2 from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal). The jet pT spectra are reported in the pseudorapidity interval of |ηjet| < 0.5 for 40 < pT, jet < 120 GeV/c in 0–10% and for 30 < pT, jet < 100 GeV/c in 10–30% collisions. Reconstructed jets were required to contain a leading charged particle with pT > 5 GeV/c to suppress jets constructed from the combinatorial background in Pb–Pb collisions. The leading charged particle requirement applied to jet spectra both in pp and Pb–Pb collisions had a negligible effect on the RAA. The nuclear modification factor RAA was found to be 0.28 ± 0.04 in 0–10% and 0.35 ± 0.04 in 10–30% collisions, independent of pT, jet within the uncertainties of the measurement. The observed suppression is in fair agreement with expectations from two model calculations with different approaches to jet quenching.
We present the charged-particle pseudorapidity density in Pb–Pb collisions at √sNN = 5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5%) collisions we find 21 400 ± 1 300, while for the most peripheral (80–90%) we find 230 ± 38. This corresponds to an increase of (27 ± 4)% over the results at √sNN = 2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The chargedparticle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.
Two-particle angular correlations were measured in pp collisions at s√=7 TeV for pions, kaons, protons, and lambdas, for all particle/anti-particle combinations in the pair. Data for mesons exhibit an expected peak dominated by effects associated with mini-jets and are well reproduced by general purpose Monte Carlo generators. However, for baryon–baryon and anti-baryon–anti-baryon pairs, where both particles have the same baryon number, a near-side anti-correlation structure is observed instead of a peak. This effect is interpreted in the context of baryon production mechanisms in the fragmentation process. It currently presents a challenge to Monte Carlo models and its origin remains an open question.