Decay constants of the heavy-light mesons from the field correlator method
| dc.creator | Badalian, A. M. | |
| dc.creator | Bakker, B. L. G. | |
| dc.creator | Simonov, Yu. A. | |
| dc.date | 2007-02-15 | |
| dc.date.accessioned | 2026-07-07T11:59:05Z | |
| dc.date.available | 2026-07-07T11:59:05Z | |
| dc.description | Meson Green's functions and decay constants $f_Γ$ in different channels $Γ$ are calculated using the Field Correlator Method. Both, spectrum and $f_Γ$, appear to be expressed only through universal constants: the string tension $σ$, $α_s$, and the pole quark masses. For the $S$-wave states the calculated masses agree with the experimental numbers within $\pm 5$ MeV. For the $D$ and $D_s$ mesons the values of $f_{\rm P} (1S)$ are equal to 210(10) and 260(10) MeV, respectively, and their ratio $f_{D_s}/f_D$=1.24(3) agrees with recent CLEO experiment. The values $f_{\rm P}(1S)=182, 216, 438$ MeV are obtained for the $B$, $B_s$, and $B_c$ mesons with the ratio $f_{B_s}/f_B$=1.19(2) and $f_D/f_B$=1.14(2). The decay constants $f_{\rm P}(2S)$ for the first radial excitations as well as the decay constants $f_{\rm V}(1S)$ in the vector channel are also calculated. The difference of about 20% between $f_{D_s}$ and $f_D$, $f_{B_s}$ and $f_B$ directly follows from our analytical formulas. | |
| dc.description | 37 pages, 10 tables, RevTeX4 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0702157 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0702157 | |
| dc.identifier | Phys.Rev.D75:116001,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.75.116001 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/206440 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Decay constants of the heavy-light mesons from the field correlator method | |
| dc.type | text |