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"There is more that unites us than divides us". Optimizing talent transfer processes by clustering 34 sports by their task, individual and environmental similarities.
Front Sports Act Living
November 2024
Institute for Studies in Sports and Exercise, HAN University of Applied Sciences, Nijmegen, Netherlands.
Sports are characterized by unique rules, environments, and tasks, but also share fundamental similarities with each other sport. Such between-sports parallels can be vital for optimizing talent transfer processes. This study aimed to explore similarities between sports to provide an objective basis for clustering sports into families by means of machine learning.
View Article and Find Full Text PDFQCD Predictions for Meson Electromagnetic Form Factors at High Momenta: Testing Factorization in Exclusive Processes.
Phys Rev Lett
November 2024
Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA.
We report the first lattice QCD computation of pion and kaon electromagnetic form factors, F_{M}(Q^{2}), at large momentum transfer up to 10 and 28 GeV^{2}, respectively. Utilizing physical masses and two fine lattices, we achieve good agreement with JLab experimental results at Q^{2}≲4 GeV^{2}. For Q^{2}≳4 GeV^{2}, our results provide ab initio QCD benchmarks for the forthcoming experiments at JLab 12 GeV and future electron-ion colliders.
View Article and Find Full Text PDFPhotoproduction of K^{+}K^{-} Pairs in Ultraperipheral Collisions.
Phys Rev Lett
May 2024
INFN, Sezione di Pavia, Pavia, Italy.
K^{+}K^{-} pairs may be produced in photonuclear collisions, either from the decays of photoproduced ϕ(1020) mesons or directly as nonresonant K^{+}K^{-} pairs. Measurements of K^{+}K^{-} photoproduction probe the couplings between the ϕ(1020) and charged kaons with photons and nuclear targets. The kaon-proton scattering occurs at energies far above those available elsewhere.
View Article and Find Full Text PDFNext-to-Next-to-Leading-Order QCD Corrections to Pion Electromagnetic Form Factors.
Phys Rev Lett
May 2024
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
We calculate the next-to-next-to-leading-order (NNLO) QCD radiative correction to the pion electromagnetic form factor with large momentum transfer. We explicitly verify the validity of the collinear factorization to two-loop order for this observable and obtain the respective IR-finite two-loop hard-scattering kernel in the closed form. The NNLO QCD correction turns out to be positive and significant.
View Article and Find Full Text PDFFirst Measurement of the |t| Dependence of Incoherent J/ψ Photonuclear Production.
Phys Rev Lett
April 2024
INFN, Sezione di Pavia, Pavia, Italy.
Article Synopsis
- The ALICE detector measured the cross section for incoherent photonuclear production of J/ψ vector mesons, focusing on the Mandelstam |t| variable, during ultraperipheral collisions of Pb nuclei at a very high energy of 5.02 TeV.
- The measurement was conducted within a rapidity interval of |y|<0.8 and covers a specific range of Bjorken-x values.
- Analysis showed that models without quantum fluctuations in the gluon density predicted a much steeper |t|-dependence than observed, but including these fluctuations improved the models' alignment with the data.
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