2022/09/06 by Pallabi Parui, Parui, Pallabi, Amruta Mishra +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2209.02455
openalex publication_date 2022/09/06 · openalex created_date 2022/09/30 · openalex updated_date 2026/07/28
The in-medium masses of the light vector, ρ0, ±, ω and the light axial-vector, A10, ± mesons, are studied in the magnetized nuclear matter, accounting for the effects of the Dirac sea. The in-medium partial decay widths for the A1→ ρπ channels, are studied from the in-medium masses of the initial and the final state particles, by applying a phenomenological Lagrangian to account for the A1ρπ interaction vertices. The masses calculated within the QCD sum rule framework, are obtained in terms of the light quark (∼ ⟨ qq ⟩) and the scalar gluon condensates (∼ ⟨ G2 ⟩), as well as the light four-quark condensate (∼ ⟨ qq⟩2 ). The condensates are calculated within the chiral SU(3) model in terms of the medium modified scalar fields. The effects of magnetic fields are incorporated through the Landau energy levels of protons, anomalous magnetic moments (AMMs) of the nucleons in the nuclear matter, in addition to the magnetized Dirac sea contribution, within the chiral effective model. The enhancement (reduction) of the light quark condensates with magnetic field, is called (inverse) magnetic catalysis. The effects of magnetic fields on the in-medium hadronic decay widths of the A1 mesons, are observed to be significant through the Dirac sea effect, accounting for the AMMs of the nucleons. This may affect the light mesons production in the non-central, heavy-ion collision experiments, where estimated magnetic field is very large.