English

A study of the excited radial vector meson $\rho$

High Energy Physics - Phenomenology 2017-12-18 v1

Abstract

We study the strong and radiative decays of the radial excitation of the ρ\rho meson, with quantum numbers nn 2S+1LJ=2^{2S+1}L_{J}=2 3S1,^{3}S_{1}, I=1I=1, and denoted as ρE\rho_{E}, by making use of an effective model. We test different masses: 1.451.45 GeV, corresponding to well known assignment ρEρ(1450)\rho_{E}\equiv\rho(1450) state; 1.251.25 GeV for the assignment ρEρ(1250)\rho _{E}\equiv\rho(1250) (a resonance whose existence has not yet been confirmed), and 1.351.35 GeV, which lies just in the middle between them in order to study the dependence of the results on the mass. The decay widths for different decay processes and two branching ratios of the radially excited meson ρE\rho_{E} were determined and compared to the experimental data reported in the Particle Data Group.

Keywords

Cite

@article{arxiv.1712.05617,
  title  = {A study of the excited radial vector meson $\rho$},
  author = {Milena Piotrowska and Francesco Giacosa},
  journal= {arXiv preprint arXiv:1712.05617},
  year   = {2017}
}

Comments

4 pages, 1 table. Prepared for the proceedings of the XVII INTERNATIONAL CONFERENCE ON HADRON SPECTROSCOPY AND STRUCTURE (HADRON 2017)