Decay Constants of B and D Mesons from Non-perturbatively Improved Lattice QCD

Bowler, K. C.; Del Debbio, L.; Flynn, J. M.; Lacagnina, G. N.; Lesk, V. I.; Maynard, C. M.; Richards, D. G.

doi:10.1016/S0550-3213(01)00511-9

arXiv 2000-07-14 DOI 10.1016/S0550-3213(01)00511-9 0 مشاهدة

Decay Constants of B and D Mesons from Non-perturbatively Improved Lattice QCD

Bowler, K. C. · Del Debbio, L. · Flynn, J. M. · Lacagnina, G. N. · Lesk, V. I. · Maynard, C. M. · Richards, D. G.

High Energy Physics - Lattice

الأصل · EN

The decay constants of B, D and K mesons are computed in quenched lattice QCD at two different values of the coupling. The action and operators are O(a) improved with non-perturbative coefficients. The results are fB=195(6)(+24/-23) MeV, fD=206(4)(+17/-10) MeV, fBₛ=220(6)(+23/-28) MeV, fDₛ=229(3)(+23/-12) MeV and fₖ= 150(3)(+12/-8) MeV. Systematic errors are discussed in detail. Results for vector decay constants, flavour symmetry breaking ratios of decay constants, the pseudoscalar-vector mass splitting and D meson masses are also presented.

الترجمة العربية

لا توجد ترجمة عربية لهذا البحث بعد. كن أوّل من يطلبها: تستغرق ثوانيَ معدودة، وتُحفظ النتيجة لكل قارئ قادم.

اقرأ على arXiv