Published November 12, 2004 | Version v1
Journal article Metadata-only

Complete two-loop electroweak fermionic corrections to the effective leptonic weak mixing angle sin2θefflept and indirect determination of the Higgs Boson mass

Creators

  • 1. Institute of Nuclear Physics PAS, Radzikowskiego 152, PL-31342 Cracow (Poland)
  • 2. DESY, Platanenallee 6, D-15738 Zeuthen (Germany)
  • 3. Institute of Physics, University of Silesia, Uniwersytecka 4, PL-40007 Katowice (Poland)
  • 4. Theoretical Physics Division, Fermilab, P.O. Box 500, Batavia, Illinois 60510 (United States)
  • 5. Institute for Particle Physics Phenomenology, University of Durham, Durham DH1 3LE (United Kingdom)

Description

We present a complete calculation of the contributions to the effective leptonic weak mixing angle, sin2θefflept, generated by closed fermion loops at the two-loop level of the electroweak interactions. This quantity is the source of the most stringent bound on the mass MH of the standard model Higgs boson. The size of the corrections with respect to known partial results varies between -4x10-5 and -8x10-5 for a realistic range of MH from 100 to 300 GeV. This translates into a shift of the predicted (from sin2θefflept alone) central value of MH by +19 GeV, to be compared with the shift induced by a recent change in the measured top quark mass which amounts to +36 GeV

Additional details

Identifiers

DOI
10.1103/PhysRevLett.93.201805;
arXiv
arXiv:hep-ph/0407317v1;

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
93
Journal Issue
20
Journal Page Range
p. 201805-201805.4
ISSN
0031-9007
CODEN
PRLTAO

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36062835
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
CORRECTIONS; GEV RANGE 10-100; GEV RANGE 100-1000; HIGGS BOSONS; INTERMEDIATE BOSONS; LEPTONIC DECAY; MASS; MIXING RATIO; STANDARD MODEL; T QUARKS; WEINBERG ANGLE; WEINBERG-SALAM GAUGE MODEL
Descriptors DEC
BASIC INTERACTIONS; BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GEV RANGE; GRAND UNIFIED THEORY; INTERACTIONS; MATHEMATICAL MODELS; PARTICLE DECAY; PARTICLE MODELS; POSTULATED PARTICLES; QUANTUM FIELD THEORY; QUARKS; TOP PARTICLES; UNIFIED GAUGE MODELS; UNIFIED-FIELD THEORIES; WEAK INTERACTIONS; WEAK PARTICLE DECAY

Optional Information

Notes
(c) 2004 The American Physical Society