https://doi.org/10.1140/epjc/s10052-018-6187-0
Regular Article - Theoretical Physics
The electromagnetic multipole moments of the possible charm-strange pentaquarks in light-cone QCD
1
Department of Physics, Dogus University, Acibadem-Kadikoy, 34722, Istanbul, Turkey
2
School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran, Iran
* e-mail: uozdem@dogus.edu.tr
Received:
17
July
2018
Accepted:
24
August
2018
Published online:
31
August
2018
We investigate the electromagnetic properties of possible charm-strange pentaquarks in the framework of the light-cone QCD sum rule using the photon distribution amplitudes. In particular, by calculating the corresponding electromagnetic form factors defining the radiative transitions under consideration we estimate the magnetic dipole and electric quadrupole moments of the pentaquark systems of a charm, an anti-strange and three light quarks. We observe that the values of magnetic dipole moments are considerably large, however, the quadrupole moments are very small. Any future measurements of the electromagnetic parameters under consideration and comparison of the obtained data with the theoretical predictions can shed light on the quark–gluon organization as well as the nature of the pentaquarks.
© The Author(s), 2018
