• Open Access

From well-known tensor mesons to yet unknown axial-tensor mesons

Shahriyar Jafarzade, Arthur Vereijken, Milena Piotrowska, and Francesco Giacosa
Phys. Rev. D 106, 036008 – Published 10 August 2022

Abstract

While the ground-state tensor (JPC=2++) mesons a2(1320), K2*(1430), f2(1270), and f2(1525) are well known experimentally and form an almost ideal nonet of quark-antiquark states, their chiral partners, the ground-states axial-tensor (JPC=2) mesons are poorly settled: only the kaonic member K2(1820) of the nonet has been experimentally found, whereas the isovector state ρ2 and two isoscalar states ω2 and ϕ2 are still missing. Here, we study masses, strong, and radiative decays of tensor and axial-tensor mesons within a chiral model that links them: the established tensor mesons are used to test the model and to determine its parameters, and subsequently various predictions for their chiral partners, the axial-tensor mesons, are obtained. The results are compared to current lattice QCD outcomes as well as to other theoretical approaches and show that the ground-state axial-tensor mesons are expected to be quite broad, the vector-pseudoscalar mode being the most prominent decay mode followed by the tensor-pseudoscalar one. Nonetheless, their experimental finding seems to be possible in ongoing and/or future experiments.

  • Received 4 April 2022
  • Accepted 25 July 2022

DOI:https://doi.org/10.1103/PhysRevD.106.036008

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

  1. Physical Systems
Particles & Fields

Authors & Affiliations

Shahriyar Jafarzade1, Arthur Vereijken1, Milena Piotrowska1, and Francesco Giacosa1,2

  • 1Institute of Physics, Jan Kochanowski University, ulica Uniwersytecka 7, 25-406 Kielce, Poland
  • 2Institute for Theoretical Physics, J. W. Goethe University, Max-von-Laue-Straße 1, 60438 Frankfurt am Main, Germany

See Also

Is f2(1950) the tensor glueball?

Arthur Vereijken, Shahriyar Jafarzade, Milena Piotrowska, and Francesco Giacosa
Phys. Rev. D 108, 014023 (2023)

Article Text

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Issue

Vol. 106, Iss. 3 — 1 August 2022

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