English

Comparative study of the production of scalar and tensor mesons in $e^+e^-$ collisions

High Energy Physics - Phenomenology 2013-12-16 v1 High Energy Physics - Experiment Nuclear Theory

Abstract

The intensity of scalar a0(980)a_0(980), f0(980)f_0(980) and tensor a2(1320)a_2(1320), f2(1270)f_2(1270) mesons production at VEPP-2000 (BINP, Novosibirsk) and the upgraded DAΦ\PhiNE (Frascati, Italy) in the processes e+ea0(f0e^+e^- \to a_0 (f_0, a2a_2, f2)γf_2) \gamma is calculated. The calculation was made with the help of VDM and the kaon loop model (for scalar mesons case). Note that the processes e+ea2(f2)γe^+e^-\to a_2(f_2)\gamma have not been studied in the energy region of VEPP-2000. It turned out that in the VEPP-2000 energy region 1.72.01.7-2.0 GeV σ(e+ea2(f2)γ)10\sigma(e^+e^-\to a_2(f_2)\gamma)\sim 10 pb, and σ(e+ea0(f0)γ)0.1\sigma(e^+e^-\to a_0(f_0)\gamma)\sim 0.1 pb. Photon angle distribution and the spin density matrices of a2a_2 and f2f_2 were calculated also.

Keywords

Cite

@article{arxiv.1307.1750,
  title  = {Comparative study of the production of scalar and tensor mesons in $e^+e^-$ collisions},
  author = {N. N. Achasov and A. I. Goncharenko and A. V. Kiselev and E. V. Rogozina},
  journal= {arXiv preprint arXiv:1307.1750},
  year   = {2013}
}

Comments

12 pages, 6 figures