Refine
Year of publication
Document Type
- Preprint (521)
- Article (292)
- Working Paper (1)
Language
- English (814)
Has Fulltext
- yes (814)
Is part of the Bibliography
- no (814)
Keywords
- Heavy Ion Experiments (20)
- Hadron-Hadron scattering (experiments) (11)
- Hadron-Hadron Scattering (6)
- Heavy-ion collision (5)
- Quark-Gluon Plasma (4)
- Collective Flow (3)
- Jets and Jet Substructure (3)
- polytrauma (3)
- Antimicrobial treatment (2)
- Biofilm (2)
- CRM (2)
- Complications (2)
- Deep brain stimulation (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Heavy Quark Production (2)
- Lepton-Nucleon Scattering (experiments) (2)
- Low-virulent infection (2)
- Particle Correlations and Fluctuations (2)
- Particle and resonance production (2)
- Particle correlations and fluctuations (2)
- QCD (2)
- Sonication (2)
- Trauma (2)
- stroke (2)
- ALICE detector (1)
- Accelerators & Beams (1)
- Accelerators & storage rings (1)
- Anti-nuclei (1)
- Artificial intelligence (1)
- Atomic & molecular beams (1)
- Atomic, Molecular & Optical (1)
- BPH (1)
- BPO (1)
- Beam loss (1)
- Biomarker (1)
- Biomarkers (1)
- Bipolar disorder (1)
- Boosted Jets (1)
- Breast cancer (1)
- Burden of illness (1)
- Cancer detection and diagnosis (1)
- Charge-transfer collisions (1)
- Circadian (1)
- Circular accelerators (1)
- Clinical frailty scale (1)
- Conservation biogeography (1)
- D-Galacturonicacid (1)
- Diagnostic markers (1)
- Electron-pion identification (1)
- Electronic transitions (1)
- Electroweak interaction (1)
- Enzymatic hydrolysis (1)
- Epilepsy (1)
- Experimental models of disease (1)
- Extracted sugar beet press pulp (1)
- Fibre/foam sandwich radiator (1)
- Frailty (1)
- G protein-coupled receptor (GPCR) (1)
- Genetic causes of cancer (1)
- Genetic testing (1)
- Genetic wildlife monitoring (1)
- HOLEP (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-hadron interactions (1)
- Hair sampling (1)
- Hard Scattering (1)
- Healthcare costs (1)
- Healthcare resource utilisation (1)
- Heavy Ion Experiment (1)
- Heavy Ions (1)
- Histology (1)
- Human genetics (1)
- IPSS (1)
- IgGAM (1)
- Inflammation (1)
- Intensive care outcome (1)
- Ionisation energy loss (1)
- Jet Physics (1)
- Jet Substructure (1)
- Jets (1)
- L-Galactonate (1)
- LHC (1)
- LTB4 (1)
- Lee type, functional outcome (1)
- Leukotriene (1)
- Low & intermediate-energy accelerators (1)
- Lung failure (1)
- Lure sticks (1)
- Machine learning (1)
- Material budget (1)
- Membrane protein (1)
- Metabolic engineering (1)
- Multi-Parton Interactions (1)
- Multi-wire proportional drift chamber (1)
- Multiparametric MRI (1)
- Nanodisc (1)
- Neural network (1)
- Noninvasive genetic sampling (1)
- Nuclear astrophysics (1)
- Nuclear physics of explosive environments (1)
- Nuclear reactions (1)
- ORP (1)
- Oncology (1)
- Ovarian cancer (1)
- Oxidoreductases (1)
- PAD-test (1)
- PSA (1)
- Particle and Resonance Production (1)
- Pb–Pb collisions (1)
- Pectin (1)
- Pentaglobin (1)
- Peritonitis (1)
- Personalized medicine (1)
- Photon counting (1)
- Prevalence (1)
- Properties of Hadrons (1)
- Prostate cancer (1)
- Psychiatry (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Quark gluon plasma (1)
- Quarkonium (1)
- RARP (1)
- Radiative capture (1)
- Radiomics (1)
- Relativistic heavy-ion collisions (1)
- Resonance assignment (1)
- Respiratory signs and symptoms (1)
- Saccharomyces cerevisiae (1)
- Seasonal variation (1)
- Sepsis (1)
- Severe bacterial infection (1)
- Solar insolation (1)
- Solution-state NMR (1)
- Ste2p (1)
- Suicide (1)
- Sunlight (1)
- TLR (1)
- TR (1)
- Topology (1)
- Tracking (1)
- Transition radiation detector (1)
- Translational research (1)
- Trigger (1)
- Tuberous sclerosis complex (1)
- VIP1 (1)
- Vector Boson Production (1)
- Xenon-based gas mixture (1)
- adverse events (1)
- allogeneic stem cell transplant (1)
- antibiotic resistance (1)
- bloodstream infections (1)
- bundle (1)
- cell-free DNA – cfDNA (1)
- chemotherapy (1)
- complications (1)
- dE/dx (1)
- detector (1)
- emergency care (1)
- experimental results (1)
- extremity (1)
- fixation (1)
- fusion biopsy (1)
- heavy ion experiments (1)
- hematoma (1)
- intensive care admission and mortality (1)
- local inflammation (1)
- lymphocyte (1)
- membrane protein (1)
- monocytes (1)
- muscle (1)
- neuroinflammation (1)
- neurophysiology (1)
- nuclear magnetic resonance (NMR) (1)
- pain therapy (1)
- pediatric patients (1)
- phagocytes (1)
- pig (1)
- pigs (1)
- porcine (1)
- prevention (1)
- protein folding (1)
- quark gluon plasma (1)
- regulatory T cell (1)
- simulation (1)
- simulation training (1)
- sports medicine (1)
- structural biology (1)
- surgery (1)
- sympathetic maintained pain (1)
- systematic biopsy (1)
- thrombolysis (1)
- thrombolysis (tPA) (1)
- training (1)
- vegetative nervous system (1)
- x-ray techniques (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.
First measurement of 𝚲+c production down to 𝑝T = 0 in pp and p–Pb collisions at √𝑠NN = 5.02 TeV
(2023)
The production of prompt Λ+c baryons has been measured at midrapidity in the transverse momentum interval 0<pT<1 GeV/c for the first time, in pp and p-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision sNN−−−√=5.02 TeV. The measurement was performed in the decay channel Λ+c→pK0S by applying new decay reconstruction techniques using a Kalman-Filter vertexing algorithm and adopting a machine-learning approach for the candidate selection. The pT-integrated Λ+c production cross sections in both collision systems were determined and used along with the measured yields in Pb-Pb collisions to compute the pT-integrated nuclear modification factors RpPb and RAA of Λ+c baryons, which are compared to model calculations that consider nuclear modification of the parton distribution functions. The Λ+c/D0 baryon-to-meson yield ratio is reported for pp and p-Pb collisions. Comparisons with models that include modified hadronisation processes are presented, and the implications of the results on the understanding of charm hadronisation in hadronic collisions are discussed. A significant (3.7σ) modification of the mean transverse momentum of Λ+c baryons is seen in p-Pb collisions with respect to pp collisions, while the pT-integrated Λ+c/D0 yield ratio was found to be consistent between the two collision systems within the uncertainties.
First measurement of 𝚲+c production down to 𝑝T = 0 in pp and p–Pb collisions at √𝑠NN = 5.02 TeV
(2023)
The production of prompt Λ+c baryons has been measured at midrapidity in the transverse momentum interval 0<pT<1 GeV/c for the first time, in pp and p-Pb collisions at a centre-of-mass energy per nucleon-nucleon collision sNN−−−√=5.02 TeV. The measurement was performed in the decay channel Λ+c→pK0S by applying new decay reconstruction techniques using a Kalman-Filter vertexing algorithm and adopting a machine-learning approach for the candidate selection. The pT-integrated Λ+c production cross sections in both collision systems were determined and used along with the measured yields in Pb-Pb collisions to compute the pT-integrated nuclear modification factors RpPb and RAA of Λ+c baryons, which are compared to model calculations that consider nuclear modification of the parton distribution functions. The Λ+c/D0 baryon-to-meson yield ratio is reported for pp and p-Pb collisions. Comparisons with models that include modified hadronisation processes are presented, and the implications of the results on the understanding of charm hadronisation in hadronic collisions are discussed. A significant (3.7σ) modification of the mean transverse momentum of Λ+c baryons is seen in p-Pb collisions with respect to pp collisions, while the pT-integrated Λ+c/D0 yield ratio was found to be consistent between the two collision systems within the uncertainties.
Non-standard errors
(2021)
In statistics, samples are drawn from a population in a data-generating process (DGP). Standard errors measure the uncertainty in sample estimates of population parameters. In science, evidence is generated to test hypotheses in an evidence-generating process (EGP). We claim that EGP variation across researchers adds uncertainty: non-standard errors. To study them, we let 164 teams test six hypotheses on the same sample. We find that non-standard errors are sizeable, on par with standard errors. Their size (i) co-varies only weakly with team merits, reproducibility, or peer rating, (ii) declines significantly after peer-feedback, and (iii) is underestimated by participants.
We present the first measurement of event-by-event fluctuations in the kaon sector in Pb – Pb collisions at √sNN = 2.76 TeV with the ALICE detector at the LHC. The robust fluctuation correlator νdyn is used to evaluate the magnitude of fluctuations of the relative yields of neutral and charged kaons, as well as the relative yields of charged kaons, as a function of collision centrality and selected kinematic ranges. While the correlator νdyn[K+,K−] exhibits a scaling approximately in inverse proportion of the charged particle multiplicity, νdyn[K0 S ,K±] features a significant deviation from such scaling. Within uncertainties, the value of νdyn[K0 S ,K±] is independent of the selected transverse momentum interval, while it exhibits a pseudorapidity dependence. The results are compared with HIJING, AMPT and EPOS–LHC predictions, and are further discussed in the context of the possible production of disoriented chiral condensates in central Pb – Pb collisions.
In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of quantum chromodynamics (QCD)1. These partons subsequently emit further partons in a process that can be described as a parton shower2, which culminates in the formation of detectable hadrons. Studying the pattern of the parton shower is one of the key experimental tools for testing QCD. This pattern is expected to depend on the mass of the initiating parton, through a phenomenon known as the dead-cone effect, which predicts a suppression of the gluon spectrum emitted by a heavy quark of mass mQ and energy E, within a cone of angular size mQ/E around the emitter3. Previously, a direct observation of the dead-cone effect in QCD had not been possible, owing to the challenge of reconstructing the cascading quarks and gluons from the experimentally accessible hadrons. We report the direct observation of the QCD dead cone by using new iterative declustering techniques4,5 to reconstruct the parton shower of charm quarks. This result confirms a fundamental feature of QCD. Furthermore, the measurement of a dead-cone angle constitutes a direct experimental observation of the non-zero mass of the charm quark, which is a fundamental constant in the standard model of particle physics.
The production of prompt Λ+c baryons at midrapidity (|y|<0.5) was measured in central (0-10%) and mid-central (30-50%) Pb-Pb collisions at the center-of-mass energy per nucleon-nucleon pair sNN−−−√=5.02 TeV with the ALICE detector. The Λ+c production yield, the Λ+c/D0 production ratio, and the Λ+c nuclear modification factor RAA are reported. The results are more precise and more differential in transverse momentum (pT) and centrality with respect to previous measurements. The Λ+c/D0 ratio, which is enhanced with respect to the pp measurement for 4<pT<8 GeV/c, is described by theoretical calculations that model the charm-quark transport in the quark-gluon plasma and include hadronization via both coalescence and fragmentation mechanisms.