On mass corrections to the decays P \to l^+l^-
| dc.creator | Dorokhov, A. E. | |
| dc.creator | Ivanov, M. A. | |
| dc.date | 2008-03-31 | |
| dc.date | 2008-04-19 | |
| dc.date.accessioned | 2026-07-07T11:49:29Z | |
| dc.date.available | 2026-07-07T11:49:29Z | |
| dc.description | We use the Mellin-Barnes representation in order to improve the theoretical estimate of mass corrections to the width of light pseudoscalar meson decay into a lepton pair, $P\to l^+l^-$ . The full resummation of the terms $\ln(m_l^2/Λ^2)(m_l^2/Λ^2)^n$ and $(m_l^2/Λ^2)^n$ to the decay amplitude is performed, where $m_l$ is the lepton mass and $Λ\approx m_ρ$ is the characteristic scale of the $P\toγ^*γ^*$ form factor. The total effect of mass corrections for the $e^+e^-$ channel is negligible and for the $μ^+μ^-$ channel its order is of a few per cent. | |
| dc.description | 10 pages, 1 figure; one figure is added | |
| dc.identifier | https://arxiv.org/abs/0803.4493 | |
| dc.identifier | http://arxiv.org/abs/0803.4493 | |
| dc.identifier | JETPLett.87:531-536,2008 | |
| dc.identifier | doi:10.1134/S0021364008100032 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203252 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | On mass corrections to the decays P \to l^+l^- | |
| dc.type | text |