Violation of Lorentz invariance and neutral component of UHECR

S. L. Dubovsky; P. G. Tinyakov

doi:10.1016/S0927-6505(02)00114-7

Violation of Lorentz invariance and neutral component of UHECR

S. L. Dubovsky, P. G. Tinyakov

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

Abstract

The observed clustering of ultra-high energy cosmic rays suggests the existence of a neutral component. The models with violation of Lorentz invariance may explain this component by neutrons becoming stable above some threshold energy E₀. The protons, in turn, may become unstable above some energy E₁ > E₀. We calculate the dependence of the threshold energies E₀ and E₁ on the parameters of the model and find E₁/E₀ ≳ 1.5. We argue that the characteristic threshold behavior of charged and neutral components may be used as the specific signature of models with violation of Lorentz invariance. The existence of the neutron stability threshold E₀ can be investigated with already existing data.

Original language	English (US)
Pages (from-to)	89-96
Number of pages	8
Journal	Astroparticle Physics
Volume	18
Issue number	1
DOIs	https://doi.org/10.1016/S0927-6505(02)00114-7
State	Published - 2002

ASJC Scopus subject areas

Astronomy and Astrophysics

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10.1016/S0927-6505(02)00114-7

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title = "Violation of Lorentz invariance and neutral component of UHECR",

abstract = "The observed clustering of ultra-high energy cosmic rays suggests the existence of a neutral component. The models with violation of Lorentz invariance may explain this component by neutrons becoming stable above some threshold energy E0. The protons, in turn, may become unstable above some energy E1 > E0. We calculate the dependence of the threshold energies E0 and E1 on the parameters of the model and find E1/E0 ≳ 1.5. We argue that the characteristic threshold behavior of charged and neutral components may be used as the specific signature of models with violation of Lorentz invariance. The existence of the neutron stability threshold E0 can be investigated with already existing data.",

author = "Dubovsky, {S. L.} and Tinyakov, {P. G.}",

note = "Funding Information: The authors are grateful to M. Teshima and V. Rubakov for useful discussions. This work is supported by the Swiss Science Foundation, grant 21-58947.99. The work of S.D is supported in part by RFBR grant 99-01-18410, by the Council for Presidential Grants and State Support of Leading Scientific Schools, grant 00-15-96626, by Swiss Science Foundation grant 7SUPJ062239 and by CRDF grant (award RP1-2103). S.D. thanks IPT, University of Lausanne, for hospitality. ",

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doi = "10.1016/S0927-6505(02)00114-7",

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T1 - Violation of Lorentz invariance and neutral component of UHECR

AU - Dubovsky, S. L.

AU - Tinyakov, P. G.

N1 - Funding Information: The authors are grateful to M. Teshima and V. Rubakov for useful discussions. This work is supported by the Swiss Science Foundation, grant 21-58947.99. The work of S.D is supported in part by RFBR grant 99-01-18410, by the Council for Presidential Grants and State Support of Leading Scientific Schools, grant 00-15-96626, by Swiss Science Foundation grant 7SUPJ062239 and by CRDF grant (award RP1-2103). S.D. thanks IPT, University of Lausanne, for hospitality.

PY - 2002

Y1 - 2002

N2 - The observed clustering of ultra-high energy cosmic rays suggests the existence of a neutral component. The models with violation of Lorentz invariance may explain this component by neutrons becoming stable above some threshold energy E0. The protons, in turn, may become unstable above some energy E1 > E0. We calculate the dependence of the threshold energies E0 and E1 on the parameters of the model and find E1/E0 ≳ 1.5. We argue that the characteristic threshold behavior of charged and neutral components may be used as the specific signature of models with violation of Lorentz invariance. The existence of the neutron stability threshold E0 can be investigated with already existing data.

AB - The observed clustering of ultra-high energy cosmic rays suggests the existence of a neutral component. The models with violation of Lorentz invariance may explain this component by neutrons becoming stable above some threshold energy E0. The protons, in turn, may become unstable above some energy E1 > E0. We calculate the dependence of the threshold energies E0 and E1 on the parameters of the model and find E1/E0 ≳ 1.5. We argue that the characteristic threshold behavior of charged and neutral components may be used as the specific signature of models with violation of Lorentz invariance. The existence of the neutron stability threshold E0 can be investigated with already existing data.

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JO - Astroparticle Physics

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Violation of Lorentz invariance and neutral component of UHECR

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