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Dependence of the leptonic decays of H- on the neutrino mixing angles θ13 and θ23 in models with neutrinophilic charged scalars

Dependence of the leptonic decays of H- on the neutrino mixing angles θ13 and θ23 in models with neutrinophilic charged scalars
Dependence of the leptonic decays of H- on the neutrino mixing angles θ13 and θ23 in models with neutrinophilic charged scalars
In the Higgs Triplet Model and the neutrinophilic Two-Higgs-Doublet Model the observed neutrinos obtain mass from a vacuum expectation value which is much smaller than the vacuum expectation value of the Higgs boson in the Standard Model. Both models contain a singly charged Higgs boson (H±) whose Yukawa coupling is directly related to the neutrino mass (i.e. a "neutrinophilic charged Higgs"). The partial decay widths of H± into a charged lepton and a neutrino (H± to ℓ± ν) depend identically on the neutrino masses and mixings in the two models. We quantify the impact of the recent measurement of sin213, which plays a crucial role in determining the magnitude of the branching ratio of H± to e± ν for the case of a normal neutrino mass ordering if the lightest neutrino mass m0 < 10-3 eV. We also discuss the sizeable dependence of H± to μ± ν and H± to τ± ν on sin2θ23, which would enable information to be obtained on sin2θ23 and the sign of Δ m231 if these decays are measured. Such information would help neutrino oscillation experiments to determine the CP-violating phase δ.
1-17
Akeroyd, A.G.
e5de827d-7119-41c2-9f1e-5ef123afdf98
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Sugiyama, Hiroaki
1b7a22f2-c44a-4de4-94c2-d84ab41dd678
Akeroyd, A.G.
e5de827d-7119-41c2-9f1e-5ef123afdf98
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Sugiyama, Hiroaki
1b7a22f2-c44a-4de4-94c2-d84ab41dd678

Akeroyd, A.G., Moretti, S. and Sugiyama, Hiroaki (2013) Dependence of the leptonic decays of H- on the neutrino mixing angles θ13 and θ23 in models with neutrinophilic charged scalars. arXiv, (arXiv:1308.0230), 1-17.

Record type: Article

Abstract

In the Higgs Triplet Model and the neutrinophilic Two-Higgs-Doublet Model the observed neutrinos obtain mass from a vacuum expectation value which is much smaller than the vacuum expectation value of the Higgs boson in the Standard Model. Both models contain a singly charged Higgs boson (H±) whose Yukawa coupling is directly related to the neutrino mass (i.e. a "neutrinophilic charged Higgs"). The partial decay widths of H± into a charged lepton and a neutrino (H± to ℓ± ν) depend identically on the neutrino masses and mixings in the two models. We quantify the impact of the recent measurement of sin213, which plays a crucial role in determining the magnitude of the branching ratio of H± to e± ν for the case of a normal neutrino mass ordering if the lightest neutrino mass m0 < 10-3 eV. We also discuss the sizeable dependence of H± to μ± ν and H± to τ± ν on sin2θ23, which would enable information to be obtained on sin2θ23 and the sign of Δ m231 if these decays are measured. Such information would help neutrino oscillation experiments to determine the CP-violating phase δ.

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More information

Published date: August 2013
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 356651
URI: http://eprints.soton.ac.uk/id/eprint/356651
PURE UUID: d1310785-5c72-4c0e-b572-bd2ad9492c63

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Date deposited: 04 Oct 2013 08:50
Last modified: 09 Nov 2021 00:31

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Contributors

Author: A.G. Akeroyd
Author: S. Moretti
Author: Hiroaki Sugiyama

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