6533b7d2fe1ef96bd125f40e
RESEARCH PRODUCT
Higher-order effects for the coupling constant in asymptotically free theories
E. ReyaM. GlückGad Eilamsubject
QuarkRenormalizationPhysicsCoupling constantQuantum mechanicsQuark modelOrder (ring theory)Function (mathematics)Gauge theoryQuantum field theorydescription
It is shown that the two-loop contribution to the Callan-Symanzik $\ensuremath{\beta}$ function leads to an effective coupling constant which may be quite different from the value obtained from the standard one-loop calculation. This correction is larger than that due to finite quark masses. Possible implications for the comparison between asymptotically free theories and experiment are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1977-01-01 | Physical Review D |