Results 1 to 10 of about 380 (120)
Light-front approach to axial-vector quarkonium γ * γ * form factors
Journal of High Energy Physics, 2022 In this work, we perform a detailed study of transition form factors for axial- vector meson production via the two-photon fusion process γ * γ * → 1++, with space-like virtual photons in the initial state and a P-wave axial-vector quarkonium in the ...
Izabela Babiarz +3 more
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On the polarization of the non-prompt contribution to inclusive J/ψ production in pp collisions
Journal of High Energy Physics, 2022 Of the J/ψ mesons (inclusively) produced in pp collisions, a big fraction results from B decays, increasing with transverse momentum and exceeding 50% for p T > 20 GeV.
Pietro Faccioli, Carlos Lourenço
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Kinematic twist-three contributions to pseudo- and quasi-GPDs and translation invariance
Journal of High Energy Physics, 2023 We present explicit expressions for the tree-level “kinematic” twist-three contributions to the nucleon matrix elements of gauge-invariant nonlocal quark-antiquark operators which can be used in lattice calculations of generalized parton distributions ...
V. M. Braun
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Sivers, Boer-Mulders and worm-gear distributions at next-to-leading order
Journal of High Energy Physics, 2023 We compute the Sivers, Boer-Mulders, worm-gear (T and L) transverse momentum dependent distributions in terms of twist-two and twist-three collinear distributions in the small-b limit up to next-to-leading order (NLO) in perturbation theory.
Felix Rein +3 more
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Phenomenology of t t ¯ j $$ t\overline{t}j $$ + X production at the LHC
Journal of High Energy Physics, 2022 We present phenomenological results for t t ¯ j $$ t\overline{t}j $$ + X production at the Large Hadron Collider, of interest for designing forthcoming experimental analyses of this process. We focus on those cases where the t t ¯ j $$ t\overline{t}j $$ +
Simone Alioli +8 more
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Parton distributions with scale uncertainties: a Monte Carlo sampling approach
Journal of High Energy Physics, 2023 We present the MCscales approach for incorporating scale uncertainties in parton distribution functions (PDFs). The new methodology builds on the Monte Carlo sampling for propagating experimental uncertainties into the PDF space that underlies the NNPDF ...
Zahari Kassabov +2 more
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Journal of High Energy Physics, 2023 In light of the current discrepancies between the recent predictions based on QCD factorisation (QCDF) and the experimental data for several non-leptonic colour-allowed two-body B-meson decays, we obtain new determinations of the non-factorisable soft ...
Maria Laura Piscopo, Aleksey V. Rusov
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A guide to diagnosing colored resonances at hadron colliders
Journal of High Energy Physics, 2023 We present a comprehensive study on how to distinguish the properties of heavy dijet resonances at hadron colliders. A variety of spins, chiral couplings, charges, and QCD color representations are considered.
Tao Han +4 more
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Quantum kinetic theory for spin transport of quarks with background chromo-electromagnetic fields
Journal of High Energy Physics, 2022 We derive the quantum kinetic equations for massive and massless quarks coupled with the background chromo-electromagnetic fields from the Wigner-function approach with the n expansion and effective power-counting scheme.
Di-Lun Yang
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Anisotropic flow and the valence quark skeleton of hadrons
Journal of High Energy Physics, 2023 We study transverse momentum anisotropies, in particular, the elliptic flow v 2 due to the interference effect sourced by valence quarks in high-energy hadron-hadron collisions. Our main formula is derived as the high-energy (eikonal) limit of the impact-
Meijian Li +3 more
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