Two-loop QCD corrections to the MSSM Higgs masses beyond the effective-potential approximation

被引：52

作者：

Degrassi, G. ^{[1
,2
]}

Di Vita, S. ^{[3
]}

Slavich, P. ^{[4
,5
]}

机构：

[1] Univ Rome Tre, Dipartimento Matemat & Fis, I-00146 Rome, Italy

[2] Ist Nazl Fis Nucl, Sez Roma Tre, I-00146 Rome, Italy

[3] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[4] Sorbonne Univ, LPTHE, Univ Paris 06, F-75252 Paris, France

[5] CNRS, LPTHE, F-75252 Paris, France

来源：

EUROPEAN PHYSICAL JOURNAL C | 2015年 / 75卷 / 02期

基金：

欧洲研究理事会;

关键词：

HIGH-PRECISION PREDICTIONS; BOSON MASSES; RADIATIVE-CORRECTIONS; DIFFERENTIAL-EQUATIONS; NUMERICAL EVALUATION; MASTER INTEGRALS; PROGRAM; RENORMALIZATION; REDUCTION; SECTOR;

D O I：

10.1140/epjc/s10052-015-3280-5

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：

We compute the two-loop QCD corrections to the neutral Higgs-boson masses in the Minimal Supersymmetric Standard Model, including the effect of non-vanishing external momenta in the self-energies. We obtain corrections of O(alpha(t)alpha(s)) and O(alpha alpha(s)), i.e., all two-loop corrections that involve the strong gauge coupling when the only non-vanishing Yukawa coupling is the top one. We adopt either the (DR) over bar renormalization scheme or a mixed on-shell (OS)-(DR) over bar scheme where the top/stop parameters are renormalized on-shell. We compare our results with those of earlier calculations, pointing out an inconsistency in a recent result obtained in the mixed OS-(DR) over bar scheme. The numerical impact of the new corrections on the prediction for the lightest-scalar mass is moderate, but already comparable to the accuracy of the Higgs-mass measurement at the Large Hadron Collider.

引用

页数：13

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