English

Impact of vector mesons polarization on its interaction with matter

High Energy Physics - Phenomenology 2023-10-05 v1

Abstract

The production of unstable particles on different nuclei provides the possibility to determine the total cross section of the interaction of vector mesons V=ρ,ω,φ,K0(892),J/ψV=\rho,\omega,\varphi, K^{*0}(892),J/\psi etc. with nucleons. This interaction is defined by a set of amplitudes that correspond to the transverse (helicity λ=±1\lambda=\pm 1) or longitudinal (λ=0\lambda=0) polarization of the vector meson. The total cross section for the interaction of transversely polarized vector mesons with nucleon σT=σ(VTN)\sigma_T=\sigma(V_T N) has been extracted from the coherent photoproduction of vector mesons off nuclei, while the vector meson production in charge exchange reactions as π±(K±)+AV0(K0)+A\pi^\pm(K^\pm)+A\to V^0(K^{*0})+A' provides the unique opportunity to obtain the not yet measured total cross section for longitudinally polarized vector meson interacting with nucleon σL=σ(VLN)\sigma_L=\sigma(V_L N). We shortly discuss the importance of the knowledge of σL\sigma_L and possibility to extract its value from experiments on nuclear target.

Keywords

Cite

@article{arxiv.2310.02389,
  title  = {Impact of vector mesons polarization on its interaction with matter},
  author = {S. R. Gevorkyan and A. V. Guskov},
  journal= {arXiv preprint arXiv:2310.02389},
  year   = {2023}
}

Comments

9 pages, 2 figures