White dwarf axions, PAMELA data, and flipped-SU(5)

Kyu Jung Bae; Ji Haeng Huh; Jihn E. Kim; Bumseok Kyae; Raoul D. Viollier

doi:10.1016/j.nuclphysb.2009.03.015

White dwarf axions, PAMELA data, and flipped-SU(5)

Kyu Jung Bae, Ji Haeng Huh, Jihn E. Kim, Bumseok Kyae, Raoul D. Viollier

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Recently, there are two hints arising from physics beyond the standard model. One is a possible energy loss mechanism due to emission of very weakly interacting light particles from white dwarf stars, with a coupling strength ∼ 0.7 × 10^{- 13}, and another is the high energy positrons observed by the PAMELA satellite experiment. We construct a supersymmetric flipped-SU(5) model, SU (5) × U (1)_X with appropriate additional symmetries, [U (1)_H]_gauge × [U (1)_R × U (1)_Γ]_global × Z₂, such that these are explained by a very light electrophilic axion of mass 0.5 meV from the spontaneously broken U (1)_Γ and two component cold dark matters from Z₂ parity. We show that in the flipped-SU(5) there exists a basic mechanism for allowing excess positrons through the charged SU(5) singlet leptons, but not allowing antiproton excess due to the absence of the SU(5) singlet quarks. We show the discovery potential of the charged SU(5) singlet E at the LHC experiments by observing the electron and positron spectrum. With these symmetries, we also comment on the mass hierarchy between the top and bottom quarks.

Original language	English
Pages (from-to)	58-75
Number of pages	18
Journal	Nuclear Physics B
Volume	817
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nuclphysb.2009.03.015
State	Published - 11 Aug 2009

Keywords

Axion
Family hierarchy
GUTs
High energy galactic positrons
Neutrino mass

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10.1016/j.nuclphysb.2009.03.015

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title = "White dwarf axions, PAMELA data, and flipped-SU(5)",

abstract = "Recently, there are two hints arising from physics beyond the standard model. One is a possible energy loss mechanism due to emission of very weakly interacting light particles from white dwarf stars, with a coupling strength ∼ 0.7 × 10- 13, and another is the high energy positrons observed by the PAMELA satellite experiment. We construct a supersymmetric flipped-SU(5) model, SU (5) × U (1)X with appropriate additional symmetries, [U (1)H]gauge × [U (1)R × U (1)Γ]global × Z2, such that these are explained by a very light electrophilic axion of mass 0.5 meV from the spontaneously broken U (1)Γ and two component cold dark matters from Z2 parity. We show that in the flipped-SU(5) there exists a basic mechanism for allowing excess positrons through the charged SU(5) singlet leptons, but not allowing antiproton excess due to the absence of the SU(5) singlet quarks. We show the discovery potential of the charged SU(5) singlet E at the LHC experiments by observing the electron and positron spectrum. With these symmetries, we also comment on the mass hierarchy between the top and bottom quarks.",

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AU - Bae, Kyu Jung

AU - Huh, Ji Haeng

AU - Kim, Jihn E.

AU - Kyae, Bumseok

AU - Viollier, Raoul D.

PY - 2009/8/11

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N2 - Recently, there are two hints arising from physics beyond the standard model. One is a possible energy loss mechanism due to emission of very weakly interacting light particles from white dwarf stars, with a coupling strength ∼ 0.7 × 10- 13, and another is the high energy positrons observed by the PAMELA satellite experiment. We construct a supersymmetric flipped-SU(5) model, SU (5) × U (1)X with appropriate additional symmetries, [U (1)H]gauge × [U (1)R × U (1)Γ]global × Z2, such that these are explained by a very light electrophilic axion of mass 0.5 meV from the spontaneously broken U (1)Γ and two component cold dark matters from Z2 parity. We show that in the flipped-SU(5) there exists a basic mechanism for allowing excess positrons through the charged SU(5) singlet leptons, but not allowing antiproton excess due to the absence of the SU(5) singlet quarks. We show the discovery potential of the charged SU(5) singlet E at the LHC experiments by observing the electron and positron spectrum. With these symmetries, we also comment on the mass hierarchy between the top and bottom quarks.

AB - Recently, there are two hints arising from physics beyond the standard model. One is a possible energy loss mechanism due to emission of very weakly interacting light particles from white dwarf stars, with a coupling strength ∼ 0.7 × 10- 13, and another is the high energy positrons observed by the PAMELA satellite experiment. We construct a supersymmetric flipped-SU(5) model, SU (5) × U (1)X with appropriate additional symmetries, [U (1)H]gauge × [U (1)R × U (1)Γ]global × Z2, such that these are explained by a very light electrophilic axion of mass 0.5 meV from the spontaneously broken U (1)Γ and two component cold dark matters from Z2 parity. We show that in the flipped-SU(5) there exists a basic mechanism for allowing excess positrons through the charged SU(5) singlet leptons, but not allowing antiproton excess due to the absence of the SU(5) singlet quarks. We show the discovery potential of the charged SU(5) singlet E at the LHC experiments by observing the electron and positron spectrum. With these symmetries, we also comment on the mass hierarchy between the top and bottom quarks.

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KW - GUTs

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White dwarf axions, PAMELA data, and flipped-SU(5)

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