6533b836fe1ef96bd12a1b8b
RESEARCH PRODUCT
Effect ofmconbquark chromomagnetic interaction and on-shell two-loop integrals with two masses
Andrei I. DavydychevAndrey Grozinsubject
Loop (topology)PhysicsNuclear and High Energy PhysicsParticle physicsBasis (linear algebra)BibliographyShell (structure)PropagatorCharm (quantum number)Bottom quarkCharm quarkdescription
The effect of non-zero c quark mass on b quark HQET Lagrangian, up to 1/mb level, is calculated at two loops. The results are expressed in terms of dilogarithmic functions of mc/mb. This calculation involves on-shell two-loop propagator-type diagrams with two different masses, mb and mc. A general algorithm for reducing such Feynman integrals to the basis of two nontrivial and two trivial integrals is constructed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-02-10 | Physical Review D |