Decay constants of the heavy-light mesons from the field correlator method

Details Decay constants of the heavy-light mesons from the field correlator method Decay constants of the heavy-light mesons from the field correlator method

2007-02-15

arxiv.org/abs/hep-ph/0702157v1

Phys.Rev.D75:116001,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

37 pages, 10 tables, RevTeX4

Scientific paper

10.1103/PhysRevD.75.116001

Meson Green's functions and decay constants $f_{\Gamma}$ in different channels $\Gamma$ are calculated using the Field Correlator Method. Both, spectrum and $f_\Gamma$, appear to be expressed only through universal constants: the string tension $\sigma$, $\alpha_s$, 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.

Affiliated with

Also associated with

No associations

Rating

Decay constants of the heavy-light mesons from the field correlator method does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Decay constants of the heavy-light mesons from the field correlator method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decay constants of the heavy-light mesons from the field correlator method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-302745