Analytical cross sections and Sivers asymmetry predictions are presented for double quarkonium production via quark-antiquark annihilation at fixed-target experiments, showing a 10-15% asymmetry at COMPASS and small negative asymmetries at LHC fixed-target energies.
TMDlib2 and TMDplotter: a platform for 3D hadron structure studies
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A common library, TMDlib2, for Transverse-Momentum-Dependent distributions (TMDs) and unintegrated parton distributions (uPDFs) is described, which allows for easy access of commonly used TMDs and uPDFs, providing a three-dimensional (3D) picture of the partonic structure of hadrons. The tool TMDplotter allows for web-based plotting of distributions implemented in TMDlib2, together with collinear pdfs as available in LHAPDF.
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Double quarkonium production in hadronic collisions at fixed-target experiments
Analytical cross sections and Sivers asymmetry predictions are presented for double quarkonium production via quark-antiquark annihilation at fixed-target experiments, showing a 10-15% asymmetry at COMPASS and small negative asymmetries at LHC fixed-target energies.