Published February 2004 | Version v1
Journal article Metadata-only

Searches for invisibly decaying Higgs bosons with the DELPHI detector at LEP

Creators

  • 1. LPNHE, Paris (France)
  • 2. LIP, FCUL, Lisboa (Portugal)
  • 3. Inst. fuer Hochenergiepysik, Oesterreichische Akademie der Wissenschaft, Vienna (Austria)

Description

Searches for HZ production with the Higgs boson decaying into an invisible final state were performed using the data collected by the DELPHI experiment at centre-of-mass energies between 188 GeV and 209 GeV. Both hadronic and leptonic final states of the Z boson were analysed. In addition to the search for a heavy Higgs boson, a dedicated search for a light Higgs boson down to 40 GeV/c2 was performed. No signal was found. Assuming the Standard Model HZ production cross-section, the mass limit for invisibly decaying Higgs bosons is 112.1 GeV/c2 at 95% confidence level. An interpretation in the Minimal Supersymmetric extension of the Standard Model (MSSM) and in a Majoron model is also given. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1140/epjc/s2003-01469-8

Additional details

Identifiers

DOI
10.1140/epjc/s2003-01469-8;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
32
Journal Issue
4
Journal Page Range
p. 475-492
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
35022799
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ANNIHILATION; ELECTRON-POSITRON INTERACTIONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; HIGGS BOSONS; INTEGRAL CROSS SECTIONS; LEPTONIC DECAY; MAJORANA THEORY; PAIR PRODUCTION; REST MASS; STANDARD MODEL; SUPERSYMMETRY; WEAK HADRONIC DECAY; WEINBERG ANGLE; Z NEUTRAL BOSONS
Descriptors DEC
BASIC INTERACTIONS; BOSONS; CROSS SECTIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FIELD THEORIES; GEV RANGE; GRAND UNIFIED THEORY; INFORMATION; INTERACTIONS; INTERMEDIATE BOSONS; INTERMEDIATE VECTOR BOSONS; LEPTON-LEPTON INTERACTIONS; MASS; MATHEMATICAL MODELS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; POSTULATED PARTICLES; QUANTUM FIELD THEORY; SYMMETRY; UNIFIED GAUGE MODELS; WEAK INTERACTIONS; WEAK PARTICLE DECAY

Optional Information

Collaborations
DELPHI Collaboration