Probing Majorana phases and the neutrino mass spectrum in the Higgs triplet model at the CERN LHC

Journal Article · Tue Apr 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.075010· OSTI ID:21249966

Akeroyd, A G ^[1]; Aoki, Mayumi ^[2]; Sugiyama, Hiroaki ^[3]

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1. Department of Physics, National Cheng Kung University, Tainan, 701 Taiwan (China)
2. ICRR, University of Tokyo, Kashiwa 277-8582 (Japan)
3. SISSA, via Beirut 2-4, I-34014 Trieste (Italy)

Doubly charged Higgs bosons (H{sup {+-}}{sup {+-}}) are a distinctive signature of the Higgs triplet model of neutrino mass generation. If H{sup {+-}}{sup {+-}} is relatively light (m{sub H{sup {+-}}{sup {+-}}}<400 GeV), it will be produced copiously at the LHC, which could enable precise measurements of the branching ratios of the decay channels H{sup {+-}}{sup {+-}}{yields}l{sub i}{sup {+-}}l{sub j}{sup {+-}}. Such branching ratios are determined solely by the neutrino mass matrix which allows the model to be tested at the LHC. We quantify the dependence of the leptonic branching ratios on the absolute neutrino mass and Majorana phases, and present the permitted values for the channels e{sup {+-}}e{sup {+-}}, e{sup {+-}}{mu}{sup {+-}}, and {mu}{sup {+-}}{mu}{sup {+-}}. It is shown that precise measurements of these three branching ratios are sufficient to extract information on the neutrino mass spectrum and probe the presence of CP violation from Majorana phases.

• OSTI ID: 21249966
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BRANCHING RATIO
CERN LHC
CHARGED PARTICLES
CP INVARIANCE
ELECTRON-MUON INTERACTIONS
ELECTRON-POSITRON INTERACTIONS
GEV RANGE 100-1000
HIGGS MODEL
LEPTONS
MASS
MASS SPECTRA
MUON-MUON INTERACTIONS
MUONS MINUS
MUONS PLUS
NEUTRINOS
PARTICLE DECAY
TRIPLETS