TY - JOUR

T1 - The Isgur-Wise function to O(αs) from sum rules in the heavy quark effective theory

AU - Bagan, E.

AU - Ball, Patricia

AU - Gosdzinsky, P.

PY - 1993/3/4

Y1 - 1993/3/4

N2 - Radiative corrections to both perturbative and non-perturbative contributions are added to existing calculations of the Isgur- Wise function ξIW. To this end, we develop a method for calculating two-loop integrals in the heavy quark effective theory involving two different scales. The inclusion of O(αs) terms causes ξIW to decrease as compared to the lowest order result and shows the importance of quantum effects. The slope parameter ρ{variant}2 violates the bound given by de Rafael and Taron. © 1993.

AB - Radiative corrections to both perturbative and non-perturbative contributions are added to existing calculations of the Isgur- Wise function ξIW. To this end, we develop a method for calculating two-loop integrals in the heavy quark effective theory involving two different scales. The inclusion of O(αs) terms causes ξIW to decrease as compared to the lowest order result and shows the importance of quantum effects. The slope parameter ρ{variant}2 violates the bound given by de Rafael and Taron. © 1993.

U2 - 10.1016/0370-2693(93)90697-G

DO - 10.1016/0370-2693(93)90697-G

M3 - Article

VL - 301

SP - 249

EP - 256

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 2-3

ER -