SU(2) HEAVY FLAVOUR SYMMETRY FOR B -> K(K^*) HADRONIC FORM FACTORS
| dc.creator | Gourdin, M. | |
| dc.creator | Keum, Y. Y. | |
| dc.creator | Pham, X. Y. | |
| dc.date | 1995-01-23 | |
| dc.date | 1995-01-25 | |
| dc.date.accessioned | 2026-07-07T09:00:16Z | |
| dc.date.available | 2026-07-07T09:00:16Z | |
| dc.description | We show that the factorization assumption in colour-suppressed $B$ meson decays is not ruled out by experimental data on $B \ra K(K^*) + J/Ψ(Ψ^{'})$. The problem previously pointed out might be due to an inadequate choice of hadronic form factors. Within the Isgur-Wise SU(2) heavy flavour symmetry framework, we search for possible $q^2$-dependences of form factors that satisfy both the large longitudinal polarization $ρ_L$ observed in $B \ra K^* + J/Ψ$ and the relatively small ratio of rates $R_{J/Ψ} = Γ(B \ra K^* + J/Ψ)/Γ(B \ra K + J/Ψ)$. We find out that the puzzle could be essentially understood if the $A_1(q^2)$ form factor is frankly decreasing (instead of being almost constant or increasing as commonly assumed). Of course, the possibility of understanding experimental data is not necessarily a proof of factorization. | |
| dc.description | 54 pages (LaTex) + 21 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9501360 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9501360 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/147968 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | SU(2) HEAVY FLAVOUR SYMMETRY FOR B -> K(K^*) HADRONIC FORM FACTORS | |
| dc.type | text |