Refine
Year of publication
Has Fulltext
- yes (647)
Is part of the Bibliography
- no (647)
Keywords
- Hadron-Hadron scattering (experiments) (10)
- Heavy Ion Experiments (9)
- Heavy-ion collision (4)
- Hadron-Hadron Scattering (3)
- Abdominal aortic aneurysm (2)
- Abdominelles Aortenaneurysma (2)
- Charm physics (2)
- Endovascular repair (2)
- Endovaskuläre Behandlung (2)
- HNSCC (2)
- Heavy Ions (2)
- Klinische Ergebnisse (2)
- LHC (2)
- Offene Versorgung (2)
- Open repair (2)
- Pb–Pb collisions (2)
- Register (2)
- Registry (2)
- Treatment outcome (2)
- ACLF (1)
- ALICE detector (1)
- ALICE experiment (1)
- AML (1)
- ASCT (1)
- Acute decompensation (1)
- Acute myeloid leukemia (1)
- Acute-on-chronic liver failure (1)
- Anti-nuclei (1)
- Autorschaft (1)
- BCOR (1)
- BCORL1 (1)
- Baryonic resonances (1)
- Biogeographical representativeness (1)
- Biomarker (1)
- Bloodstream infection (1)
- Bloodstream infections (1)
- CDI (1)
- CHIP (1)
- Cancer (1)
- Capecitabine (1)
- Centrality Class (1)
- Centrality Selection (1)
- Cirrhosis (1)
- Clinical Trials and Observations (1)
- Cluster (1)
- DKTK-ROG (1)
- EBV (1)
- EGFR inhibitor (1)
- Ecosystem integrity (1)
- Electron-pion identification (1)
- Electroweak interaction (1)
- Elliptic flow (1)
- Essential biodiversity variables (1)
- Extended donor criteria (1)
- Fibre/foam sandwich radiator (1)
- Freezeout (1)
- Gram negative bacteria (1)
- HPV (1)
- Heavy ions (1)
- Heavy-flavour decay muons (1)
- Heavy-ion reactions (1)
- Hematology (1)
- Hematopoietic stem cell transplantation (1)
- Hyperons (1)
- Induction chemotherapy (1)
- Intensive care units (1)
- Invariant Mass Distribution (1)
- Ionisation energy loss (1)
- LTER (1)
- Lepton-Nucleon Scattering (experiments) (1)
- Literarischer Stil (1)
- Literaturwissenschaft (1)
- Loco-regional control (1)
- Long-term ecological monitoring (1)
- Long‐term ecosystem research (1)
- Machine learning (1)
- Metastatic breast cancer (1)
- Minimum Bias (1)
- Monte Carlo (1)
- Multi-wire proportional drift chamber (1)
- Multivariate analysis (1)
- Myeloid Neoplasia (1)
- NAFL (1)
- NASH (1)
- Neural network (1)
- Neutropenia (1)
- Nuclear Physics (1)
- Nucleus (1)
- Oncology (1)
- Organ allocation (1)
- PELICAN (1)
- Pancreas transplantation (1)
- Particle and resonance production (1)
- Particle correlations and fluctuations (1)
- Pegylated liposomal doxorubicin (1)
- Postoperative radiochemotherapy (1)
- Production Cross Section (1)
- Proton (1)
- QCD (1)
- Quark gluon plasma (1)
- RNA PT (1)
- RNA modification (1)
- Radiomics (1)
- Rapidity Range (1)
- Rejection (1)
- Relativistic heavy ion physics (1)
- Relativistic heavy-ion collisions (1)
- Research infrastructure (1)
- Resolution Parameter (1)
- Site networks (1)
- Stenotrophomonas maltophilia (1)
- Strangeness (1)
- Surgery (1)
- Systematic Uncertainty (1)
- TIPS (1)
- TR (1)
- Time Projection Chamber (1)
- Tracking (1)
- Transition radiation detector (1)
- Transjugular intrahepatic portosystemic shunt (1)
- Trigger (1)
- Validation (1)
- WoMo score (1)
- Xenon-based gas mixture (1)
- acneiform skin toxicity (1)
- acute myeloid leukemia (1)
- autologous stem cell transplantation (1)
- chemotherapy (1)
- clonal dominance (1)
- clonal hematopoiesis (1)
- dE/dx (1)
- digestion artifact (1)
- dysbiosis (1)
- gene signature (1)
- head and neck squamous cell carcinoma (1)
- heavy ion experiments (1)
- hematopoietic stem cells (1)
- hematopoietic stress (1)
- image-based risk modelling (1)
- leukemia (1)
- loss-of-function (1)
- machine learning (1)
- mass spectrometry (1)
- microbiome (1)
- nucleoside analysis (1)
- p16 (1)
- p53 (1)
- personalised therapy (1)
- postoperative radiochemotherapy (1)
- postoperative radiotherapy (1)
- propensity score matching (1)
- quark gluon plasma (1)
- radiation oncology (1)
- radiomic (1)
- risk stratification (1)
- somatic mutations (1)
- survival (1)
- women (1)
Institute
- Physik (610)
- Frankfurt Institute for Advanced Studies (FIAS) (558)
- Informatik (538)
- Medizin (32)
- Hochschulrechenzentrum (2)
- Institut für Ökologie, Evolution und Diversität (2)
- Senckenbergische Naturforschende Gesellschaft (2)
- Biochemie, Chemie und Pharmazie (1)
- Extern (1)
- Sonderforschungsbereiche / Forschungskollegs (1)
Higher harmonic flow coefficients of identified hadrons in Pb–Pb collisions at √sNN = 2.76 TeV
(2016)
The elliptic, triangular, quadrangular and pentagonal anisotropic flow coefficients for π±, K± and p+p¯¯¯ in Pb-Pb collisions at sNN−−−√=2.76 TeV were measured with the ALICE detector at the Large Hadron Collider. The results were obtained with the Scalar Product method, correlating the identified hadrons with reference particles from a different pseudorapidity region. Effects not related to the common event symmetry planes (non-flow) were estimated using correlations in pp collisions and were subtracted from the measurement. The obtained flow coefficients exhibit a clear mass ordering for transverse momentum (pT) values below ≈ 3 GeV/c. In the intermediate pT region (3<pT<6 GeV/c), particles group at an approximate level according to the number of constituent quarks, suggesting that coalescence might be the relevant particle production mechanism in this region. The results for pT<3 GeV/c are described fairly well by a hydrodynamical model (iEBE-VISHNU) that uses initial conditions generated by A Multi-Phase Transport model (AMPT) and describes the expansion of the fireball using a value of 0.08 for the ratio of shear viscosity to entropy density (η/s), coupled to a hadronic cascade model (UrQMD). Finally, expectations from AMPT alone fail to quantitatively describe the measurements for all harmonics throughout the measured transverse momentum region. However, the comparison to the AMPT model highlights the importance of the late hadronic rescattering stage to the development of the observed mass ordering at low values of pT and of coalescence as a particle production mechanism for the particle type grouping at intermediate values of pT for all harmonics.
The production of beauty hadrons was measured via semi-leptonic decays at mid-rapidity with the ALICE detector at the LHC in the transverse momentum interval 1<pT<8 GeV/c in minimum-bias p-Pb collisions at sNN−−−√=5.02 TeV and in 1.3<pT<8 GeV/c in the 20% most central Pb-Pb collisions at sNN−−−√=2.76 TeV. The pp reference spectra at s√=5.02 TeV and s√=2.76 TeV, needed for the calculation of the nuclear modification factors RpPb and RPbPb, were obtained by a pQCD-driven scaling of the cross section of electrons from beauty-hadron decays measured at s√=7 TeV. In the pT interval 3<pT<8 GeV/c a suppression of the yield of electrons from beauty-hadron decays is observed in Pb-Pb compared to pp collisions. Towards lower pT, the RPbPb values increase with large systematic uncertainties. The RpPb is consistent with unity within systematic uncertainties and is well described by theoretical calculations that include cold nuclear matter effects in p-Pb collisions. The measured RpPb and these calculations indicate that cold nuclear matter effects are small at high transverse momentum also in Pb-Pb collisions. Therefore, the observed reduction of RPbPb below unity at high pT may be ascribed to an effect of the hot and dense medium formed in Pb-Pb collisions.
The production of beauty hadrons was measured via semi-leptonic decays at mid-rapidity with the ALICE detector at the LHC in the transverse momentum interval 1<pT<8 GeV/c in minimum-bias p-Pb collisions at sNN−−−√=5.02 TeV and in 1.3<pT<8 GeV/c in the 20% most central Pb-Pb collisions at sNN−−−√=2.76 TeV. The pp reference spectra at s√=5.02 TeV and s√=2.76 TeV, needed for the calculation of the nuclear modification factors RpPb and RPbPb, were obtained by a pQCD-driven scaling of the cross section of electrons from beauty-hadron decays measured at s√=7 TeV. In the pT interval 3<pT<8 GeV/c a suppression of the yield of electrons from beauty-hadron decays is observed in Pb-Pb compared to pp collisions. Towards lower pT, the RPbPb values increase with large systematic uncertainties. The RpPb is consistent with unity within systematic uncertainties and is well described by theoretical calculations that include cold nuclear matter effects in p-Pb collisions. The measured RpPb and these calculations indicate that cold nuclear matter effects are small at high transverse momentum also in Pb-Pb collisions. Therefore, the observed reduction of RPbPb below unity at high pT may be ascribed to an effect of the hot and dense medium formed in Pb-Pb collisions.
The production of beauty hadrons was measured via semi-leptonic decays at mid-rapidity with the ALICE detector at the LHC in the transverse momentum interval 1<pT<8 GeV/c in minimum-bias p-Pb collisions at sNN−−−√=5.02 TeV and in 1.3<pT<8 GeV/c in the 20% most central Pb-Pb collisions at sNN−−−√=2.76 TeV. The pp reference spectra at s√=5.02 TeV and s√=2.76 TeV, needed for the calculation of the nuclear modification factors RpPb and RPbPb, were obtained by a pQCD-driven scaling of the cross section of electrons from beauty-hadron decays measured at s√=7 TeV. The RPbPb is about 0.7 with an uncertainty of about 30% in the interval 3<pT<6 GeV/c and 0.47 with an uncertainty of 25% in 6<pT<8 GeV/c in Pb-Pb collisions. Below pT=3 GeV/c, the RPbPb values increase with decreasing transverse momentum with systematic uncertainties of 30-45%. The RpPb is consistent with unity within systematic uncertainties of about 20% at high pT, increasing at low pT, and is well described by theoretical calculations that include cold nuclear matter effects in p-Pb collisions. The measured RpPb and these calculations indicate that cold nuclear matter effects are small at high transverse momentum also in Pb-Pb collisions. Therefore, the observed reduction of RPbPb below unity for high pT can be ascribed to an effect of the hot and dense medium formed in Pb-Pb collisions.
The measurement of the mass differences for systems bound by the strong force has reached a very high precision with protons and anti-protons. 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 theories, 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 and anti-deuterons, and 3He and 3He¯¯¯¯¯¯ nuclei carried out with the ALICE (A Large Ion Collider Experiment) 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 confirm CPT invariance to an unprecedented precision in the sector of light nuclei. 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).
We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN−−−√=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.
We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN−−−√=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.
We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN−−−√=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation.
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 from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal), with the anti-kT jet algorithm with a resolution parameter of R=0.2. 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 effect of the leading charged particle requirement has been studied in both pp and Pb-Pb collisions and has been shown to have negligible effects on the RAA within the uncertainties of the measurement. The nuclear modification factor is obtained by dividing the jet spectrum measured in Pb-Pb by that in pp collisions scaled by the number of independent nucleon-nucleon collisions estimated using a Glauber model. RAA is 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.
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 from charged and neutral particles, utilizing the ALICE tracking detectors and Electromagnetic Calorimeter (EMCal), with the anti-kT jet algorithm with a resolution parameter of R=0.2. 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 effect of the leading charged particle requirement has been studied in both pp and Pb-Pb collisions and has been shown to have negligible effects on the RAA within the uncertainties of the measurement. The nuclear modification factor is obtained by dividing the jet spectrum measured in Pb-Pb by that in pp collisions scaled by the number of independent nucleon-nucleon collisions estimated using a Glauber model. RAA is 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.