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FeynHiggs1.2: Hybrid MSbar/on-shell Renormalization for the CP-even Higgs Boson Sector in the MSSM

机译:FeynHiggs1.2:Cp-even的混合msbar / on-shell重整化   mssm的希格斯玻色子部门

摘要

An updated version is presented of the Fortran code FeynHiggs for theevaluation of the neutral CP-even Higgs sector masses and mixing angles. Itdiffers from the previous version by a modification of the renormalizationscheme concerning the treatment of subleading terms at the one-loop level; thetwo-loop corrections, for which the leading contributions of O(alpha_t alphas)and O(alpha_t^2) are implemented, are not affected by the modifiedrenormalization prescription. Besides stabilizing the Higgs mass calculationsand avoiding unphysically large threshold effects, the mass of the lightestMSSM Higgs boson, m_h, is increased by 1-2 GeV for most parts of the MSSMparameter space.
机译:提供了Fortran代码FeynHiggs的更新版本,用于评估中性CP甚至希格斯扇形块的质量和混合角度。它与以前的版本有所不同,它对重归一化方案进行了修改,该方案涉及在单循环级别处理子线索项;修正后的归一化处方不影响实现了O(alpha_t alphas)和O(alpha_t ^ 2)的前导贡献的双循环校正。除了稳定希格斯质量计算并避免异常大的阈值效应外,大多数MSSM参数空间的最轻质MSSM希格斯玻色子m_h的质量增加了1-2 GeV。

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