262 research outputs found
Role of polarizations and spin-spin correlations of in at GeV to probe anomalous couplings
We study anomalous couplings due to dimension- operators
in the production process followed by semi-leptonic decay
using polarizations and spin-spin correlations of bosons. The construction
of some of the polarization and spin-spin correlation asymmetries required one
to distinguish between two decay quarks coming from decay. We developed
an artificial neural network (ANN) and a boosted decision tree (BDT) to
distinguish down-type jets from up-type jets and used them to put constraint on
anomalous couplings at International Linear Collider (ILC) running at GeV with integrated luminosities of $\mathcal{L} \in \{100 \
\text{fb}^{-1}, \ 250 \ \text{fb}^{-1}, \ 1000 \ \text{fb}^{-1}, \ 3000 \
\text{fb}^{-1}\}$. We find that the use of polarization and spin correlation
observables, on top of the cross-sections, significantly improves the limits on
anomalous coupling compared to the earlier studies.Comment: 17 pages, 26 figure
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