Reactions gamma gamma -> pi pi and gamma gamma -> K \bar K: the (IJ^{PC}=00^{++})-wave spectra at E_{gamma gamma}^{(c.m.)} = 300- 1900 MeV
| dc.creator | Anisovich, A. V. | |
| dc.creator | Anisovich, V. V. | |
| dc.date | 1999-06-22 | |
| dc.date.accessioned | 2026-07-07T10:33:53Z | |
| dc.date.available | 2026-07-07T10:33:53Z | |
| dc.description | We calculate the $00^{++}$-wave two-meson spectra for the reactions $γγ\toπ^0π^0$, $γγ\toπ^+π^-$, $γγ\to K^0\bar K^0$ and $γγ\to K^+ K^-$ on the basis of: (i) the results of the $K$-matrix analysis of the $00^{++}$ amplitudes for the reactions $ππ\to ππ$, $K\bar K$, $ηη$, $ηη'$, $ππππ$, and (ii) recently developed method for calculation of the decay amplitudes $f_0(1^3P_0q\bar q)\to γγ$, $f_0(2^3P_0q\bar q)\to γγ$. The reconstructed $ππ$ and $K\bar K$ spectra can be used as a guide for the extraction of partial widths of scalar/isoscalar resonances $f_0(980)\to γγ$, $f_0(1300)\to γγ$, $f_0(1500)\to γγ$, $f_0(1750)\to γγ$. As follows from our calculations, the resonances $f_0(980)$ and $f_0(1500)$ in the $π^+π^-$ and $π^0π^0$ spectra reveal themselves as dips. | |
| dc.description | 13 pages, LaTeX, elsart + 7 EPS figures, epsfig.sty | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9906448 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9906448 | |
| dc.identifier | Phys.Lett.B467:289-295,1999 | |
| dc.identifier | doi:10.1016/S0370-2693(99)01189-2 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179282 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Reactions gamma gamma -> pi pi and gamma gamma -> K \bar K: the (IJ^{PC}=00^{++})-wave spectra at E_{gamma gamma}^{(c.m.)} = 300- 1900 MeV | |
| dc.type | text |