Two-loop O(αsGFmt2) corrections to Higgs production at LEP
- 1. Max-Planck-Institut fuer Physik, Muenchen (Germany)
- 2. Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik
Description
We evaluate the two-loop O(αsGFmt2) correction to the ZZH coupling in the Standard Model by means of a low-energy theorem, assuming that the top quark is much heavier than the Higgs boson. We then construct a heavy-top-quark effective Lagrangian for the ZZH interaction that accommodates the O(GFmt2) and O(αsGFmt2) corrections and derive from it the corresponding corrections to the H→ZZ decay as well as those to Higgs-boson production at LEP1, via Z→f anti fH, and at LEP2, via e+e-→ZH. In all cases, the leading O(GFmt2) terms are considerably screened by their QCD corrections, if the on-shell renormalization scheme with GF as a basic parameter is employed. (orig.)
Availability note (English)
MF available from INIS under the Report Number.
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Additional details
Publishing Information
- Imprint Pagination
- 13 p.
- ISSN
- 0418-9833
- Report number
- DESY--95-008
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 26053712
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ANNIHILATION; CORRECTIONS; COUPLING; DECAY AMPLITUDES; ELECTRON-POSITRON INTERACTIONS; FERMI INTERACTIONS; HIGGS BOSONS; HIGGS MODEL; LAGRANGIAN FIELD THEORY; LOW-ENERGY THEOREM; NEUTRAL-CURRENT INTERACTIONS; PAIR PRODUCTION; PERTURBATION THEORY; QUANTUM CHROMODYNAMICS; QUARKS; RENORMALIZATION; REST MASS; STANDARD MODEL; TOP PARTICLES; WEAK PARTICLE DECAY; Z NEUTRAL BOSONS
- Descriptors DEC
- AMPLITUDES; BASIC INTERACTIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; MASS; MATHEMATICAL MODELS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; POSTULATED PARTICLES; QUANTUM FIELD THEORY; TRANSITION AMPLITUDES; UNIFIED GAUGE MODELS; WEAK INTERACTIONS
Optional Information
- Secondary number(s)
- MPI/PHT--95-3; HEP-PH--9501392.