Journal
PHYSICS LETTERS B
Volume 603, Issue 3-4, Pages 219-229Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2004.10.022
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We show that in two Higgs doublet models at tree-level the potential minimum preserving electric charge and CP symmetries, when it exists, is the global one. Furthermore, we derived a very simple condition, involving only the coefficients of the quartic terms of the potential, that guarantees spontaneous CP breaking. (C) 2004 Elsevier B.V. All rights reserved.
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