2017/07/31 by K. Azizi, Y. Sarac, H. Sundu
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Hadron #Mixing (physics) #Particle physics #Particle physics theoretical and experimental studies #Pentaquark #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Spin (aerodynamics) #Thermodynamics #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.96.094030
published as Phys. Rev. D 96, 094030 (2017) · 9 Pages, 4 Figures and 2 Tables
openalex created_date 2017/07/14 · arxiv created 2017/11/14 · openalex publication_date 2017/11/29 · arxiv updated 2017/12/06 · openalex updated_date 2026/08/05
Theoretical investigations of the pentaquark states that were recently discovered provide important information on their nature and structure. It is necessary to study the spectroscopic parameters, like masses and residues of particles belong to the class of pentaquarks, and ones having similar structures. The mass and pole residue are quantities that emerge as the main input parameters in exploration of the electromagnetic strong and weak interactions of the pentaquarks with other hadrons in many frameworks. This work deals with a QCD sum rule analysis of the spin-3/2 and spin-5/2 bottom pentaquarks with both positive and negative parities aiming to evaluate their masses and residues. In calculations, the pentaquark states are modeled by molecular-type interpolating currents: for particles with J=5/2, a mixing current is used. We compare the results obtained in this work with the existing predictions of other theoretical studies. The predictions on the masses may shed light on experimental searches of the bottom pentaquarks.