Browsing by Author "LIN, GL"

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LIGHT-FRONT HEAVY-QUARK EFFECTIVE THEORY AND HEAVY-MESON BOUND-STATES
(1995-09-01)
CHEUNG, CY
;
ZHANG, WM
;
LIN, GL
;
物理研究所
;
Institute of Physics
The heavy-quark effective theory is developed on the light front. Based on this effective theory, a light-front heavy-meson bound state with definite spin and parity is constructed. Within the effective theory, the Isgur-Wise function is derived in terms of the asymptotic Light-front bound state amplitudes in the limit m(Q) --> infinity; the results a general expression for arbitrary recoil velocities. With the asymptotic form of the BSW amplitudes, the Isgur-Wise function is given by xi(upsilon .upsilon') = 1/upsilon .upsilon. The slope at the zero-recoil point is rho(2) = -xi'(1) = 1, in excellent agreement with the recent CLEO result of rho(2) = 1.01 +/- 0.15 +/- 0.09.