Refine
Year of publication
Document Type
- Article (215)
- Preprint (150)
- Part of Periodical (2)
Language
- English (367)
Has Fulltext
- yes (367)
Is part of the Bibliography
- no (367)
Keywords
- BESIII (13)
- Branching fraction (9)
- Hadronic decays (4)
- Heavy-ion collisions (4)
- e +-e − Experiments (4)
- Branching fractions (3)
- Charm physics (3)
- Diffraction (3)
- Elastic scattering (3)
- Hadron-Hadron Scattering (3)
- Lepton colliders (3)
- Quarkonium (3)
- e+-e− Experiments (3)
- Absolute branching fraction (2)
- Beam Energy Scan (2)
- Bhabha (2)
- Charm Physics (2)
- Charmed mesons (2)
- Charmonium (2)
- Chiral Magnetic Effect (2)
- Collectivity (2)
- Correlation (2)
- Cross section (2)
- Electroweak interaction (2)
- Heavy ion collisions (2)
- Initial state radiation (2)
- Leptonic, semileptonic & radiative decays (2)
- Particle decays (2)
- Polarization (2)
- RHIC (2)
- STAR (2)
- Shear viscosity (2)
- decays (2)
- ALICE experiment (1)
- Age determination by skeleton (1)
- Algorithms (1)
- Angular distribution (1)
- Annihilation (1)
- Artificial intelligence (1)
- Azimuthal correlations (1)
- B-slope (1)
- BESIII detector (1)
- Beam energy scan (1)
- Beauty production (1)
- Born cross section (1)
- Canonical suppression (1)
- Charged-particle multiplicity (1)
- Charm quark spatial diffusion coefficient (1)
- Charmed baryon (1)
- Charmonia (1)
- Chiral magnetic effect (1)
- Coalescence (1)
- Cold nuclear matter effects (1)
- Covariance matrix (1)
- Critical point (1)
- Cross section measurements (1)
- D meson (1)
- D0 and D+ mesons (1)
- Dalitz decay (1)
- Deuteron production (1)
- Di-hadron correlations (1)
- D⁰ meson (1)
- Effective form factor (1)
- Electromagnetic amplitude (1)
- Electromagnetic form factor (1)
- Electromagnetic form factors (1)
- Elliptic flow (1)
- Enicospilus (1)
- Exotics (1)
- Experimental nuclear physics (1)
- Experimental particle physics (1)
- Flavor changing neutral currents (1)
- Flavour Physics (1)
- Flow (1)
- Form factors (1)
- Forward physics (1)
- Groomed jet radius (1)
- Hadron-Hadron scattering (experiments) (1)
- Hadronic cross section (1)
- Hadronization (1)
- Hadrons (1)
- Heavy Ion Experiments (1)
- Heavy Ions (1)
- Heavy Quark Production (1)
- Heavy ions (1)
- Heavy-Ion Collision (1)
- Heavy-flavor decay electron (1)
- Heavy-flavour production (1)
- Heavy-ion (1)
- Heavy-ion detectors (1)
- Higher moments (1)
- Hyperons (1)
- Image processing (computer-assisted) (1)
- Inclusive branching fraction (1)
- Interference fragmentation function (1)
- J/ψ suppression (1)
- Jet substructure (1)
- Jets (1)
- K0S (1)
- LHC (1)
- Large detector systems for particle and astroparticle physics (1)
- Macrochlamydinae (1)
- Multiple parton interactions (1)
- Muon anomaly (1)
- Net-charge correlations (1)
- Net-charge fluctuations (1)
- Neutrinos (1)
- Nonflow (1)
- Particle and Resonance Production (1)
- Particle and resonance production (1)
- Particle phenomena (1)
- Particle production (1)
- Phase (1)
- Pion form factor (1)
- Proton (1)
- Proton-proton collisions (1)
- Proton–proton collisions (1)
- QCD (1)
- QGP (1)
- Quantum chromodynamics (1)
- Quark–gluon plasma (1)
- R value (1)
- Rare decays (1)
- Relativistic heavy ion physics (1)
- Resonances (1)
- Retrospective studies (1)
- Saudi Arabia (1)
- Single electrons (1)
- SoftDrop (1)
- Spin alignment (1)
- Splitting function (1)
- Strangeness enhancement (1)
- Strong amplitude (1)
- Techniques Electromagnetic calorimeters (1)
- Thermal model (1)
- Threshold effect (1)
- Transversity (1)
- Triple quarkonia (1)
- Varadia amboliensis gen. et sp. nov. (1)
- W-exchange (1)
- Y (4260) (1)
- biogeography (1)
- branching fractions (1)
- catalogue (1)
- center-of-mass energy (1)
- charmed baryon (1)
- decay (1)
- diabetes complication (1)
- dimuon (1)
- diphoton (1)
- e+e − annihilation (1)
- e+e⁻ − Experiments (1)
- e+e− annihilation (1)
- ectosomes (1)
- exosomes (1)
- extracellular vesicles (1)
- guidelines (1)
- hadronic events (1)
- heavy-ion collisions (1)
- inclusive J/ψ decays (1)
- luminosity (1)
- microparticles (1)
- microvesicles (1)
- minimal information requirements (1)
- musculoskeletal disorders (1)
- number of J/ψ events (1)
- p+p collisions (1)
- phylogenetics (1)
- pp collisions (1)
- prevalence (1)
- reproducibility (1)
- ribosomal RNA gene cluster (1)
- rigor (1)
- standardization (1)
- systematic (1)
- taxonomy (1)
- trigger efficiency (1)
- type 2 diabetes (1)
- Λc⁺ (1)
- Σ hyperon (1)
- Υ suppression (1)
- ψ(3686) (1)
Institute
- Physik (250)
- Frankfurt Institute for Advanced Studies (FIAS) (149)
- Informatik (42)
- Medizin (5)
- Georg-Speyer-Haus (1)
- Geowissenschaften (1)
A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. In order to best exploit new physics opportunities opening up with the upgraded LHC and new detector technologies, the experiment has undergone a major upgrade during the LHC Long Shutdown 2 (2019–2022). This comprises the move to continuous readout, the complete overhaul of core detectors, as well as a new online event processing farm with a redesigned online-offline software framework. These improvements will allow to record Pb-Pb collisions at rates up to 50 kHz, while ensuring sensitivity for signals without a triggerable signature.
A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. In order to best exploit new physics opportunities opening up with the upgraded LHC and new detector technologies, the experiment has undergone a major upgrade during the LHC Long Shutdown 2 (2019-2022). This comprises the move to continuous readout, the complete overhaul of core detectors, as well as a new online event processing farm with a redesigned online-offline software framework. These improvements will allow to record Pb-Pb collisions at rates up to 50 kHz, while ensuring sensitivity for signals without a triggerable signature.
A Large Ion Collider Experiment (ALICE) has been conceived and constructed as a heavy-ion experiment at the LHC. During LHC Runs 1 and 2, it has produced a wide range of physics results using all collision systems available at the LHC. In order to best exploit new physics opportunities opening up with the upgraded LHC and new detector technologies, the experiment has undergone a major upgrade during the LHC Long Shutdown 2 (2019-2022). This comprises the move to continuous readout, the complete overhaul of core detectors, as well as a new online event processing farm with a redesigned online-offline software framework. These improvements will allow to record Pb-Pb collisions at rates up to 50 kHz, while ensuring sensitivity for signals without a triggerable signature.
This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, |GE | and |GM|, using the ¯pp → μ+μ− reaction at PANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at PANDA, using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is ¯pp → π+π−,due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distribuations of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented.
Using 448 million ψ(2S) events, the spin-singlet P-wave charmonium state hc(11P1) is studied via the ψ(2S)→π0hc decay followed by the hc→γηc transition. The branching fractions are measured to be BInc(ψ(2S)→π0hc)×BTag(hc→γηc)=(4.22+0.27−0.26±0.19)×10−4 , BInc(ψ(2S)→π0hc)=(7.32±0.34±0.41)×10−4, and BTag(hc→γηc)=(57.66+3.62−3.50±0.58)%, where the uncertainties are statistical and systematic, respectively. The hc(11P1) mass and width are determined to be M=(3525.32±0.06±0.15) MeV/c2 and Γ=(0.78+0.27−0.24±0.12) MeV. Using the center of gravity mass of the three χcJ(13PJ) mesons (M(c.o.g.)), the 1P hyperfine mass splitting is estimated to be Δhyp=M(hc)−M(c.o.g.)=(0.03±0.06±0.15) MeV/c2, which is consistent with the expectation that the 1P hyperfine splitting is zero at the lowest-order.
We study the direct production of the JPC=1++ charmonium state χc1(1P) in electron-positron annihilation by carrying out an energy scan around the mass of the χc1(1P). The data were collected with the BESIII detector at the BEPCII collider. An interference pattern between the signal process e+e−→χc1(1P)→γJ/ψ→γμ+μ− and the background processes e+e−→γISRJ/ψ→γISRμ+μ− and e+e−→γISRμ+μ− are observed by combining all the data samples. The χc1(1P) signal is observed with a significance of 5.1σ. This is the first observation of a C-even state directly produced in e+e− annihilation. The electronic width of the χc1(1P) resonance is determined to be Γee=(0.12+0.13−0.08) eV, which is of the same order of magnitude as theoretical calculations.
The Born cross section of the process e+e−→ηJ/ψ at a center-of-mass energy s√=3.773 GeV is measured to be (8.89±0.88±0.42) pb, using a data sample collected with the BESIII detector operating at the BEPCII storage ring. The decay ψ(3770)→ηJ/ψ is observed for the first time with a statistical significance of 7.4σ. From a fit to the dressed cross-section line-shape of e+e−→ηJ/ψ from s√=3.773 to 4.600 GeV we obtain the branching fraction of the decay ψ(3770)→ηJ/ψ to be (11.6±6.1±1.0)×10−4 when the ψ(3770) decay amplitude is added coherently to the other contributions, and (7.9±1.0±0.7)×10−4 when it is added incoherently. Here the first uncertainties are statistical and the second are systematic.
We study the direct production of the JPC=1++ charmonium state χc1(1P) in electron-positron annihilation by carrying out an energy scan around the mass of the χc1(1P). The data was collected with the BESIII detector at the BEPCII collider. An interference pattern between the signal process e+e−→χc1(1P)→γJ/ψ→γμ+μ− and the background processes e+e−→γISRJ/ψ→γISRμ+μ− and e+e−→γISRμ+μ− is observed by combining all the data samples. The χc1(1P) signal is observed with a significance of 5.1σ. This is the first observation of a C-even state directly produced in e+e− annihilation. The electronic width of the χc1(1P) resonance is determined to be Γee=(0.12+0.13−0.08) eV, which is of the same order of magnitude as theoretical calculations.