2017/04/18 by Ahmed Ali, Ali, Ahmed, Ishtiaq Ahmed +5
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1704.05419
openalex publication_date 2017/04/18 · openalex created_date 2017/04/28 · openalex updated_date 2026/07/28
The LHCb discovery of the two baryonic states Pc+(4380) and Pc+(4450), having JP=3/2- and JP=5/2+, respectively, in the process pp → b b → Λb X, followed by the decay Λb → J/ψ p K-, has motivated a number of theoretical models. Interpreting them as compact \c [c u] [ud]; LP=0,1\ objects, the mass spectroscopy of the JP=3/2- and JP=5/2+ pentaquarks was worked out by us for the pentaquarks in the SU(3)F multiplets, using an effective Hamiltonian based on constituent diquarks and quarks. Their possible discovery modes in b-baryon decays were also given using the heavy quark spin symmetry. In this paper, we calculate the mass spectrum of the hidden cc pentaquarks having JP=(1)/(2)^± for the SU(3)F multiplets and their anticipated discovery modes in b-baryon decays. Some of the Pc+(JP=1/2^±) pentaquarks, produced in the Λb decays may have their masses just below the J/ψ p threshold, in which case they should be searched for in the modes Pc+(JP=1/2^±) → ηc p, μ+ μ- p, e+ e- p.