Refine
Document Type
- Preprint (331)
- Article (170)
- Doctoral Thesis (1)
Language
- English (502)
Has Fulltext
- yes (502)
Is part of the Bibliography
- no (502)
Keywords
- Hadron-Hadron Scattering (8)
- Heavy Ion Experiments (7)
- e +-e − Experiments (5)
- Collective Flow (4)
- Particle and Resonance Production (4)
- Quark-Gluon Plasma (4)
- BESIII (3)
- Jets (3)
- Jets and Jet Substructure (3)
- Branching fraction (2)
- Charm Physics (2)
- Charmonium (2)
- Diffraction (2)
- Electroweak Interaction (2)
- Experimental nuclear physics (2)
- Experimental particle physics (2)
- Heavy Quark Production (2)
- Particle Correlations and Fluctuations (2)
- QCD (2)
- Quarkonium (2)
- Radiative decay (2)
- Spectroscopy (2)
- Boosted Jets (1)
- Branching fraction measurement (1)
- Branching fractions (1)
- Charm vector (1)
- Collective Flow, (1)
- Collectivity (1)
- Correlation (1)
- Deep learning (1)
- Elastic scattering (1)
- Flavour Physics (1)
- Forward physics (1)
- Groomed jet radius (1)
- Hadron-Hadron Scattering Heavy (1)
- Hadron-Hadron scattering (experiments) (1)
- Hadron-hadron interactions (1)
- Hard Scattering (1)
- Heavy Ion Experiment (1)
- Heavy-ion physics (1)
- Helicity amplitude analysis (1)
- Hybrid model (1)
- Jet Physics (1)
- Jet Substructure (1)
- Jet substructure (1)
- Lepton-Nucleon Scattering (experiments) (1)
- Material budget (1)
- Multi-Parton Interactions (1)
- Polarization (1)
- Properties of Hadrons (1)
- Proton-proton collisions (1)
- QCD equation of state (1)
- Quark Deconfinement (1)
- Quark Gluon Plasma (1)
- Quark Production (1)
- Relativistic heavy-ion collisions (1)
- Semi-leptonic decays (1)
- Shear viscosity (1)
- SoftDrop (1)
- Splitting function (1)
- Vector Boson Production (1)
- detector (1)
- e+e− Experiments (1)
- experimental results (1)
- Λ+c baryon (1)
Institute
- Physik (488)
- Frankfurt Institute for Advanced Studies (FIAS) (372)
- Informatik (347)
- Informatik und Mathematik (3)
- Philosophie (1)
We report new STAR measurements of the single-spin asymmetries 𝐴𝐿 for 𝑊+ and 𝑊− bosons produced in polarized proton-proton collisions at √𝑠=510 GeV as a function of the decay-positron and decay-electron pseudorapidity. The data were obtained in 2013 and correspond to an integrated luminosity of 250 pb−1. The results are combined with previous results obtained with 86 pb−1. A comparison with theoretical expectations based on polarized lepton-nucleon deep-inelastic scattering and prior polarized proton-proton data suggests a difference between the ¯𝑢 and ¯𝑑 quark helicity distributions for 0.05<𝑥<0.25. In addition, we report new results for the double-spin asymmetries 𝐴𝐿𝐿 for 𝑊±, as well as 𝐴𝐿 for 𝑍/𝛾* production and subsequent decay into electron-positron pairs.
Transverse spin transfer to Λ and ¯Λ hyperons in polarized proton-proton collisions at √𝑠=200 GeV
(2018)
The transverse spin transfer from polarized protons to Λ and Λ¯ hyperons is expected to provide sensitivity to the transversity distribution of the nucleon and to the transversely polarized fragmentation functions. We report the first measurement of the transverse spin transfer to Λ and Λ¯ along the polarization direction of the fragmenting quark, DTT, in transversely polarized proton-proton collisions at s√=200GeV with the STAR detector at RHIC. The data correspond to an integrated luminosity of 18pb−1 and cover the pseudorapidity range |η|<1.2 and transverse momenta pT up to 8GeV/c. The dependence on pT and η are presented. The DTT results are found to be comparable with a model prediction, and are also consistent with zero within uncertainties.