Magnetic dipole moments of the hidden-charm pentaquark states: P_c(4440), P_c(4457) and P_cs(4459)

2021/02/28 by Ulaş Özdem · 2 citations
Physics and Astronomy · #hep-ph #hep-ex #hep-lat

paper · pdf · doi:10.1140/epjc/s10052-021-09070-3

12 pages and 1 figure

arxiv created 2021/03/11 · arxiv updated 2021/04/21

Abstract

In this work, we employ the light-cone QCD sum rule to calculate the magnetic dipole moments of the P_c(4440), P_c(4457) and P_cs(4459) pentaquark states by considering them as the diquark-diquark-antiquark and molecular pictures with quantum numbers J^P = (3)/(2)^-, J^P = (1)/(2)^- and J^P = (1)/(2)^-, respectively. In the analyses, we use the diquark-diquark-antiquark and molecular form of interpolating currents, and photon distribution amplitudes to obtain the magnetic dipole moment of pentaquark states. Theoretical examinations on magnetic dipole moments of the hidden-charm pentaquark states, are essential as their results can help us better figure out their substructure and the dynamics of the QCD as the theory of the strong interaction. As a by product, we extract the electric quadrupole and magnetic octupole moments of the P_c(4440) pentaquark. These values show a non-spherical charge distribution.

Cited by

• Charting doubly strange hidden-charm pentaquarks: An electromagnetic mapping of spin-12 and 32 states
• Unveiling the electromagnetic structure and intrinsic dynamics of spin-(3)/(2) hidden-charm pentaquarks: A comprehensive QCD analysis