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Volume 374 - Light Cone 2019 - QCD on the light cone: from hadrons to heavy ions (LC2019) - Contributed
Form factors and structure functions of heavy mesons and baryons
K. Serafin
Full text: pdf
Pre-published on: 2020 May 06
Published on: 2020 May 26
Abstract
I present preliminary results for form factors and structure functions of some of spin-0, spin-1/2 and spin-1 heavy quarkonia and triply-heavy baryons in heavy flavor QCD. Using renormalization group procedure for effective particles (RGPEP) and gluon mass ansatz, approximate Hamiltonians for heavy quarkonia and triply-heavy baryons in QCD were found. The approximate eigenfunctions of these Hamiltonians are used to obtain the results for form factors and structure functions. The results for charge radii are in a surprisingly good agreement with lattice QCD results in cases where comparison is possible. Magnetic moments of vector charmonia and bottomonia are in agreement with other theoretical results. Magnetic moments of $B_c^*$ mesons and spin-$1/2$ ground states of $bbc$ and $ccb$ baryons are considerably larger than moments reported in the literature. The hadron structure functions are computed in a simplified way, neglecting the huge difference between the scale of quark binding and the scale of the virtual photon in deep inelastic scattering.
DOI: https://doi.org/10.22323/1.374.0079
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