Testing a Neutrino Mass Generation Mechanism at the LHC

The Large Hadron Collider could be a discovery machine for the neutrino mass pattern and its Majorana nature in the context of a well-motivated TeV scale Type II seesaw model. This is achieved by identifying the flavor structure of the lepton number violating decays of the charged Higgs bosons. The observation of either H^+ --> tau^+ nubar or H^+ --> e^+ nubar will be particularly robust to determine the neutrino spectra since they are independent of the unknown Majorana phases, which could be probed via the H^{++} --> e^+_i e^+_j decays. In a less favorable scenario when the leptonic channels are suppressed, one needs to observe the decays H^+ --> W^+ H_1, and H^+ --> t bbar to confirm the triplet-doublet mixing that implies the Type II relation. The associated production H^{++} H^{-} is crucial in order to test the triplet nature of the Higgs field.

p p: inclusive reaction
Higgs particle: pair production
Higgs particle: charged particle
charge: 1
charge: 2
Higgs particle: triplet
neutrino: mass generation
mass: hierarchy
seesaw model
Higgs particle: leptonic decay

References(41)

Figures(4)

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Frank Wilczek
(
- MIT
)

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•
e-Print:
- 0708.4236
•
DOI:
- 10.1140/epjc/s10052-008-0717-0

Spontaneous Symmetry Breaking as a Basis of Particle Mass

Chris Quigg
(
- CERN and
- Fermilab
)

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•
e-Print:
- 0704.2232
•
DOI:
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V. Barger
(
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(
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,
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)

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e-Print:
- hep-ph/0308123
•
DOI:
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Review of particle physics. Particle Data Group

S. Eidelman
(
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e-Print:
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Neutrino Mass and New Physics

R.N. Mohapatra
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A.Y. Smirnov
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Neutrino masses and mixings and...

Alessandro Strumia
(
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)
,
Francesco Vissani
(
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- hep-ph/0606054

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Steven Weinberg
(
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Tsutomu Yanagida
(
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e-Print:
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