tailieunhanh - Production of axion in e e− and ae− collision

Based on our results we comment on the general implications of our study for the production of axion in process annihilation of ordinary matter and properties of axion in process collision of its with ordinary matter, and also for signature of axion in the dark matter of universe. | JOURNAL OF SCIENCE OF HNUE Mathematical and Physical Sci. 2014 Vol. 59 No. 7 pp. 101-111 This paper is available online at http PRODUCTION OF AXION IN e e AND ae COLLISION Dao Thi Le Thuy1 and Le Nhu Thuc2 1 Faculty of Physics Hanoi National University of Education 2 Department of Postgraduate Studies Hanoi National University of Education Abstract. The properties of axions are reviewed and the production of axion in e e and ae collision is considered in supersymmetric theories using the Feynman diagram method. Based on our results we comment on the general implications of our study for the production of axion in process annihilation of ordinary matter and properties of axion in process collision of its with ordinary matter and also for signature of axion in the dark matter of universe. Keywords Axion ALPs pNGB. 1. Introduction The standard model in particle physics has succeeded in describing physics below the electronweak scale. It is not however a complete theory because of theoretical problems. One is the strong CP problem. Among various candidate solutions proposed so far the Peccei-Quinn mechanism is the most attractive candidates for the solution of the strong CP problem where the CP-violating phase θ θ 6 10 9 is explained by the existence of a new pseudo-scalar field called the axion 10 . At present the axion mass is constrained by laboratory 7 astrophysical and cosmological considerations 13 placing it between 10 6 eV and 10 3 eV. If the axion has a mass near the low limit of order 10 5 eV it is a good candidate for dark matter of the universe. In addition an axino the fermionic partner of the axion naturally appears in SUSY models 5 which acquires a mass from three-loop Feynman diagrams in a typical range of between a few eV up to a maximum of 1 keV 14 . The candidates for dark matter can appear in different models in the 3-3-1 models 8 or in the supersymmetric and superstring theories 3 . Light particles with a two photon interaction .

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