Significant effects of second Kaluza-Klein particles on dark matter physics

Mitsuru Kakizaki; Shigeki Matsumoto; Yoshio Sato; Masato Senami

doi:10.1103/PhysRevD.71.123522

Significant effects of second Kaluza-Klein particles on dark matter physics

Mitsuru Kakizaki^*, Shigeki Matsumoto, Yoshio Sato, Masato Senami

^*Corresponding author for this work

Department of Physics

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

65 Scopus citations

Abstract

We point out that Kaluza-Klein (KK) dark matter physics is drastically affected by second KK particles. In this work various interesting phenomena caused by the second KK modes are discussed. In particular, we reevaluate the annihilation cross section relevant to the thermal relic density of KK dark matter in universal extra dimension models. In these models, the first KK mode of a B boson is a viable dark matter candidate by virtue of KK parity. We demonstrate that the KK dark matter annihilation cross section can be enhanced, compared with the tree-level cross section mediated only by first KK particles. The mass of the first KK mode of the B boson consistent with the Wilkinson Microwave Anisotropy Probe observation is increased.

Original language	English
Article number	123522
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	71
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevD.71.123522
State	Published - 2005/06/15

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.71.123522

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title = "Significant effects of second Kaluza-Klein particles on dark matter physics",

abstract = "We point out that Kaluza-Klein (KK) dark matter physics is drastically affected by second KK particles. In this work various interesting phenomena caused by the second KK modes are discussed. In particular, we reevaluate the annihilation cross section relevant to the thermal relic density of KK dark matter in universal extra dimension models. In these models, the first KK mode of a B boson is a viable dark matter candidate by virtue of KK parity. We demonstrate that the KK dark matter annihilation cross section can be enhanced, compared with the tree-level cross section mediated only by first KK particles. The mass of the first KK mode of the B boson consistent with the Wilkinson Microwave Anisotropy Probe observation is increased.",

author = "Mitsuru Kakizaki and Shigeki Matsumoto and Yoshio Sato and Masato Senami",

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AU - Kakizaki, Mitsuru

AU - Matsumoto, Shigeki

AU - Sato, Yoshio

AU - Senami, Masato

PY - 2005/6/15

Y1 - 2005/6/15

N2 - We point out that Kaluza-Klein (KK) dark matter physics is drastically affected by second KK particles. In this work various interesting phenomena caused by the second KK modes are discussed. In particular, we reevaluate the annihilation cross section relevant to the thermal relic density of KK dark matter in universal extra dimension models. In these models, the first KK mode of a B boson is a viable dark matter candidate by virtue of KK parity. We demonstrate that the KK dark matter annihilation cross section can be enhanced, compared with the tree-level cross section mediated only by first KK particles. The mass of the first KK mode of the B boson consistent with the Wilkinson Microwave Anisotropy Probe observation is increased.

AB - We point out that Kaluza-Klein (KK) dark matter physics is drastically affected by second KK particles. In this work various interesting phenomena caused by the second KK modes are discussed. In particular, we reevaluate the annihilation cross section relevant to the thermal relic density of KK dark matter in universal extra dimension models. In these models, the first KK mode of a B boson is a viable dark matter candidate by virtue of KK parity. We demonstrate that the KK dark matter annihilation cross section can be enhanced, compared with the tree-level cross section mediated only by first KK particles. The mass of the first KK mode of the B boson consistent with the Wilkinson Microwave Anisotropy Probe observation is increased.

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Significant effects of second Kaluza-Klein particles on dark matter physics

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