期刊
PHYSICS LETTERS B
卷 487, 期 1-2, 页码 165-170出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(00)00806-6
关键词
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It has been recently claimed that very large values of a universal soft mass term m(0) for sfermions and higgs bosons become natural when m(t) is close to 175 GeV if tan beta approximate to 10. We show that very large values of m(0) require accidental cancellations not guaranteed by experimental data or theoretical assumptions, and consequently an unnatural fine-tuning of the parameters. (C) 2000 Elsevier Science B.V. All rights reserved.
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