Di-pion emission in heavy quarkonia decays
| dc.creator | Simonov, Yu. A. | |
| dc.date | 2007-12-13 | |
| dc.date | 2008-02-04 | |
| dc.date.accessioned | 2026-07-07T11:13:44Z | |
| dc.date.available | 2026-07-07T11:13:44Z | |
| dc.description | The di-pion spectrum for the $Υ(nS) \to Υ(n'S))$ transition with $n\leq 4$ has the form $\frac{dw}{dq}\sim $ (phase space) $ |η-x|^2$, with $x=\frac{q^2-4m^2_π}{(ΔM)^2 -4 m^2_π}< q^2 \equiv M^2_{ππ}, $ and $ΔM=M(nS) -M(n'S)$. The parameter $η$ is calculated and the spectrum is shown to reproduce the experimental data for all 3 types of decays: $3\to 1, 2\to 1$ and $3\to 2$ with $η\approx 0.5; 0$, and -3, respectively. | |
| dc.description | 3 pages, 2 figures; Journal version | |
| dc.identifier | https://arxiv.org/abs/0712.2197 | |
| dc.identifier | http://arxiv.org/abs/0712.2197 | |
| dc.identifier | JETPLett.87:121-123,2008 | |
| dc.identifier | doi:10.1007/s11448-008-3001-5 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191820 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Di-pion emission in heavy quarkonia decays | |
| dc.type | text |