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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We presented new researches for the sensitivity limits on the weak dipolemoments of the top quark-$Z$ boson interactions in the context of the BestestLittle Higgs Model (BLHM). For this purpose, we derive the correspondingFeynman rules. Among the new contributions, there are those arising from thevertices of scalar bosons, vector bosons and heavy quarks contribution:$tq_iS_i$, ($S_i=h_0, H_0, A_0, \phi^{0}, \eta^{0}, \sigma, H^{\pm},\phi^{\pm}, \eta^{\pm}$); $tq_iV_i$, ($V_i= \gamma, Z, W, Z', W'$); and$Zq_i\bar q_i$ ($q_i=b, t, B, T, T_5, T_6, T^{2/3}, T^{5/3}$). With these newvertices, we calculate the one-loop contributions to the weak dipole moments$a^W_t$ and $d^W_t$ of the top-quark in several scenarios. We found that withthe parameters of the BLHM of $m_{A_0}= 1000$ GeV, $m_{\eta^0}= 100$ GeV,$F=4000$ GeV, $f=[1000, 3000]$ GeV and $\tan\beta=3$, the $a^W_t$ reachesvalues with a sensitivity of $a^{W}_{t}= 2.49 \times 10^{-4}-1.26 \times10^{-5}i$, $1.26 \times 10^{-4}-5.41\times 10^{-6}i$, where the maincontribution comes from the scalars $h_0$ and $H_0$, which couples to thetop-quark of the Standard Model and the top-quarks of the BLHM. These valuesseem to be out of the reach of the expected experimental sensitivity of presentexperiments. However, experiments on future colliders are expected to besensitive enough to measure the AWMDM of the top-quark. Our study complementsother studies at the level of one-loop with an extended scalar sector.

Sensitivity limits on the weak dipole moments of the top-quark at the Bestest Little Higgs Model