Broadening the Higgs boson with right-handed neutrinos and a higher dimension operator at the electroweak scale

Journal Article · Mon Oct 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.075006· OSTI ID:21032376

Graesser, Michael L ^[1]

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1. Department of Physics and NHETC, Rutgers University, Piscataway, New Jersey 08540 (United States)

The existence of certain TeV suppressed higher-dimension operators may open up new decay channels for the Higgs boson to decay into lighter right-handed neutrinos. These channels may dominate over all other channels if the Higgs boson is light. For a Higgs boson mass larger than 2m{sub W}, the new decays are subdominant yet still of interest. The right-handed neutrinos have macroscopic decay lengths and decay mostly into final states containing leptons and quarks. A distinguishing collider signature of this scenario is a pair of displaced vertices violating lepton number. A general operator analysis is performed using the minimal flavor violation hypothesis to illustrate that these novel decay processes can occur while remaining consistent with experimental constraints on lepton number violating processes. In this context, the question of whether these new decay modes dominate is found to depend crucially on the approximate flavor symmetries of the right-handed neutrinos.

• OSTI ID: 21032376
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
FIELD OPERATORS
FLAVOR MODEL
HIGGS BOSONS
LEPTON NUMBER
NEUTRINOS
PARTICLE DECAY
QUARKS
REST MASS
STANDARD MODEL
SYMMETRY
TEV RANGE