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タイトル: Neutralino decay in the μ-problem solvable extra U(1) models
著者: Suematsu, Daijiro link image link image
末松, 大二郎
発行日: 1998年 2月
出版社(者): American Physical Society
引用: Physical Review D - Particles, Fields, Gravitation and Cosmology 57 (3), pp. 1738-1754
雑誌名: Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN: 0556-2821
巻: 57
号: 3
開始ページ: 1738
終了ページ: 1754
抄録: We study neutralino decay in the supersymmetric extra U(1) models which can solve the μ problem. In these models the neutralino sector is extended at least into six components by an extra U(1) gaugino and a superpartner of a Higgs singlet. Focusing on its two lower mass eigenstates χ̄02 and χ̄01, decay processes such as a tree-level three-body decay χ̄02→χ̄01ff̄ and a one-loop radiative decay χ̄02→χ̄01γ are estimated. We investigate the condition under which the radiative decay becomes the dominant mode and also numerically search for such parameter regions. In this analysis we take account of the Abelian gaugino kinetic term mixing. We suggest that the gaugino mass relation MW∼MY may not be necessary for the radiative decay dominance in the extra U(1) models.
URI: http://hdl.handle.net/2297/3490
資料種別: Journal Article
版表示: publisher

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/3490



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