Prediction of beauty particle masses with the heavy quark effective theory. 2.
Nov 23, 19938 pages
Published in:
- Int.J.Mod.Phys.A 10 (1995) 801-806
e-Print:
- hep-ph/9311314 [hep-ph]
Report number:
- SISSA-176-93-EP,
- SISSA(ISAS)-176-93-EP
View in:
Citations per year
Abstract: (cern)
The effective theory for heavy quarks has additional symmetries with respect to QCD, which relate charm and beauty hadron masses. Assuming the spectrum of charmed particles, we predicted in a previous work the masses of some beauty particles. The predictions of the Lambda_b mass, M(Lambda_b)=5630 MeV, and of the B_s mass, M(B_s)=5379 MeV, are in agreement with present experimental data. We continue this work using recent experimental data on charm hadron masses. The results are: M(Sigma_b)=5822+-6 MeV, M(Sigma_b*)-M(Sigma_b)=33+-3 MeV, M(Omega_b)=6080+-7 MeV, M(Omega_b*)-M(Omega_b)=32+-3 MeV, M(Lambda_b*)=5945+-3 MeV, M(Lambda_b**)-M(Lambda_b*)=15+-1 MeV. When experimental data for beauty hadron masses are available, a comparison with the theoretical values allows a quantitative estimate of the corrections to the static theory, which contain informations on hadron dynamics at low energy.Note:
- 8 pages, LaTex Version 2.09
- bottom baryon: mass
- mass: bottom baryon
- HQET model
- correction: mass
- mass: correction
- numerical calculations
References(12)
Figures(0)