https://doi.org/10.1140/epjc/s10052-023-11349-6
Regular Article - Theoretical Physics
form factors from QCD light-cone sum rules
1
School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, China
2
College of Physics and Optoelectronic engineering, Ocean University of China, 266100, Qingdao, China
3
Frontiers Science Center for Rare Isotopes, and Lanzhou Center for Theoretical Physics, and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, 730000, Lanzhou, China
4
Center for High Energy Physics, Peking University, 100871, Beijing, China
Received:
16
May
2022
Accepted:
20
February
2023
Published online:
3
April
2023
In this work, we calculate the transition form factors of 
decaying into proton and 
(
and 
respectively) within the framework of light-cone sum rules with the distribution amplitudes (DAs) of -baryon. In the hadronic representation of the correlation function, we have isolated both the proton and the states so that the form factors can be evaluated simultaneously. Due to the less known properties of the baryons, we investigate three interpolating currents of the light baryons and five parametrization models for DAs of 
. Numerically, our predictions on the 
form factors and the branching fractions of 
from the Ioffe or the tensor currents are consistent with the Lattice simulation and the results from the light-baryon sum rules, as well as the experimental data of 
. The predictions on the form factors of 
are very sensitive to the choice of the interpolating currents so that the relevant measurement could be helpful to clarify the properties of baryons.
© The Author(s) 2023
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