On the metastability of the Standard Model vacuum

被引：379

作者：

Isidori, G ^{[1
]}

Ridolfi, G ^{[1
]}

Strumia, A ^{[1
]}

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

NUCLEAR PHYSICS B | 2001年 / 609卷 / 03期

关键词：

D O I：

10.1016/S0550-3213(01)00302-9

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

If the Higgs mass m(H), is as low as suggested by present experimental information, the Standard Model ground state might not be absolutely stable. We present a detailed analysis of the lower bounds on mH imposed by the requirement that the electroweak vacuum be sufficiently long-lived. We perform a complete one-loop calculation of the tunnelling probability at zero temperature, and we improve it by means of two-loop renormalization-group equations. We find that, for m(H) = 115 GeV, the Higgs potential develops an instability below the Planck scale for mt > (166 +/- 2) Gev, but the electroweak vacuum is sufficiently long-lived for m(t) < (175 +/- 2) GeV. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：387 / 409

页数：23

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