HEAVY-QUARK 1/MQ EXPANSION OF MESON WEAK DECAY FORM-FACTORS IN THE RELATIVISTIC QUARK-MODEL

Авторы: FAUSTOV RN, GALKIN VO
Журнал: ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS
Том: 66
Номер: 1-2
Год издания: 1995
Первая страница: 119
Последняя страница: 127
DOI: 10.1007/BF01496586
Аннотация: The method of systematical expansion in the inverse powers of the heavy quark masses of the weak current matrix elements between heavy meson states is developed in the framework of the relativistic quark model based on the quasipotential approach in quantum field theory. The comparison of the first and second order terms of this expansion with the structure predicted by the heavy quark effective theory imposes strong constraints on the form of the long-range confining potential of quark-antiquark interaction. It is found that the confinig qqBAR potential is effectively vector, while scalar potential is anticonfining and helps to reproduce the correct nonrelativistic limit. At large distances quarks have non-perturbative anomalous chromomagnetic moments. The obtained values of the potential parameters are in accord with the ones found in our previous consideration of meson masses and decay rates. We calculate the Isgur-Wise function. The first and the second order form factors within 1/m(Q) expansion.
Добавил в систему: Галкин Владимир Олегович

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