A 1993 look at the lower bound on the top quark mass from CP violation

Andrzej J. Buras

doi:10.1016/0370-2693(93)91023-G

A 1993 look at the lower bound on the top quark mass from CP violation

Andrzej J. Buras

Chair of Theoretical Elementary Particle Physics

Max-Planck-Institut für Physik

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

We point out that the lower bound on m_t from the CP violation parameter ε{lunate}_K has increased considerably. Using Wolfenstein parametrization of the CKM matrix we derive an analytic expression for this bound as a function of |V_cb|, |V_ub/V_cb| and the non-perturbative parameter B_K. For B_K 0 ̌.80, |V_cb| ≤ 0.040 and |V_ub/V_cb| ≤ 0.10 we find m_t > 130 GeV. However, for B_K ≤ 0.70, |V_{cb| ≤ 0.038} and |V_ub/V_cb| ≤ 0.08 the bound is raised to m_t > 205 GeV. The lower bound on m_t from B⁰-B⁰ mixing is also reconsidered.

Original language	English
Pages (from-to)	449-453
Number of pages	5
Journal	Physics Letters B
Volume	317
Issue number	3
DOIs	https://doi.org/10.1016/0370-2693(93)91023-G
State	Published - 11 Nov 1993

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title = "A 1993 look at the lower bound on the top quark mass from CP violation",

abstract = "We point out that the lower bound on mt from the CP violation parameter ε\{lunate\}K has increased considerably. Using Wolfenstein parametrization of the CKM matrix we derive an analytic expression for this bound as a function of |Vcb|, |Vub/Vcb| and the non-perturbative parameter BK. For BK 0{\v }.80, |Vcb| ≤ 0.040 and |Vub/Vcb| ≤ 0.10 we find mt > 130 GeV. However, for BK ≤ 0.70, |Vcb| ≤ 0.038 and |Vub/Vcb| ≤ 0.08 the bound is raised to mt > 205 GeV. The lower bound on mt from B0-B0 mixing is also reconsidered.",

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N2 - We point out that the lower bound on mt from the CP violation parameter ε{lunate}K has increased considerably. Using Wolfenstein parametrization of the CKM matrix we derive an analytic expression for this bound as a function of |Vcb|, |Vub/Vcb| and the non-perturbative parameter BK. For BK 0 ̌.80, |Vcb| ≤ 0.040 and |Vub/Vcb| ≤ 0.10 we find mt > 130 GeV. However, for BK ≤ 0.70, |Vcb| ≤ 0.038 and |Vub/Vcb| ≤ 0.08 the bound is raised to mt > 205 GeV. The lower bound on mt from B0-B0 mixing is also reconsidered.

AB - We point out that the lower bound on mt from the CP violation parameter ε{lunate}K has increased considerably. Using Wolfenstein parametrization of the CKM matrix we derive an analytic expression for this bound as a function of |Vcb|, |Vub/Vcb| and the non-perturbative parameter BK. For BK 0 ̌.80, |Vcb| ≤ 0.040 and |Vub/Vcb| ≤ 0.10 we find mt > 130 GeV. However, for BK ≤ 0.70, |Vcb| ≤ 0.038 and |Vub/Vcb| ≤ 0.08 the bound is raised to mt > 205 GeV. The lower bound on mt from B0-B0 mixing is also reconsidered.

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JO - Physics Letters B

JF - Physics Letters B

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ER -

A 1993 look at the lower bound on the top quark mass from CP violation

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