English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We calculate the Yukawa corrections of order ${\calO}(\alpha_{ew}m_{t(b)}^2/m_W^2)$, ${\cal O}(\alpha_{ew}m_{t(b)}^3/m_W^3)$ and${\cal O}(\alpha_{ew}m_{t(b)}^4/m_W^4)$ to the widths of the decays $\tildet_2\to \tilde t_1 + (h^0,H^0,A^0)$ in the Minimal Supersymmetric StandardModel, and perform a detailed numerical analysis. We also compare the resultswith the ones presented in an earlier literature, where the ${\calO}(\alpha_{s})$ SUSY-QCD corrections to the same three decay processes havebeen calculated.  Our numerical results show that for the decays $\tilde t_2\to \tilde t_1 +h^{0}$, $\tilde t_2\to \tilde t_1 + H^{0}$, the Yukawa corrections aresignificant in most of the parameter range, which can reach a few ten percent,and for the decay $\tilde t_2\to\tilde t_1 + A^{0}$, the Yukawa corrections arerelatively smaller, which are only a few percent. The numerical calculationsalso show that using the running quark masses and the running trilinearcoupling $A_t$, which include the QCD, SUSY-QCD, SUSY-Electroweak effects andresume all high order ($\tan\beta$)-enhanced effects, can vastly improve theconvergence of the perturbation expansion. We also discuss the effects of therunning of the higgsino mass parameter $\mu$ on the corrections, and find thatthey are significant, too, especially for large $\tan\beta$.Comment: 37 pages, 19 eps figure

Supersymmetric electroweak corrections to heavier top squark decay into a lighter top squark and neutral Higgs boson