First estimates of the $(α+ β)^π$ from two--photon experiments
| dc.creator | Kaloshin, A. E. | |
| dc.creator | Persikov, V. M. | |
| dc.creator | Serebryakov, V. V. | |
| dc.date | 1994-02-03 | |
| dc.date.accessioned | 2026-07-25T19:21:35Z | |
| dc.description | We carry out the semi--model analysis of existing data on the angular distributions of the $γγ\rightarrowπ^+ π^- ,\ π^0 π^0$ reactions with purpose to obtain S-wave cross section and D-wave's parameters. In the first time we obtain from experiment the sum of electrical and magnetic pion polarizabilities: $(α+ β)^{π^+} = 0.28 \pm 0.07$ (MARK-II \cite{M2}), \ \ $(α+ β)^{π^+} = 0.38 \pm 0.05$ (CELLO \cite{CELLO}), \ \ $(α+ β)^{π^0} = 1.26 \pm 0.06$ (Crystal Ball \cite{CB}) \ \ in units of $10^{-42} \ cm^3$ ($e^2=4 πα$). | |
| dc.description | Latex, 5 pages, no figures, ISU-IAP.Th94-01, Irkutsk | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9402220 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9402220 | |
| dc.identifier | Phys.Atom.Nucl. 57 (1994) 2207-2208; Yad.Fiz. 57N12 (1994) 2298-2299 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/63974 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | First estimates of the $(α+ β)^π$ from two--photon experiments | |
| dc.type | text |