Abstract
Motivated by recent work on three-point QCD sum rules in heavy quark physics, we use simple quantum mechanical models to study the basic issue of duality in three-point sum rules. We show that while in all of these models the duality in two-point sum rules works fine, the duality in three-point sum rules may be 100% violated, leading to completely unreliable predictions for the matrix elements in question. The implications for three-point QCD sum rules are discussed. A new estimate for the parameter (Formula presented) of HQET is given.
| Original language | English |
|---|---|
| Pages (from-to) | 2676-2690 |
| Number of pages | 15 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 57 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Jan 1998 |
| Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)