Measuring anomalous WW$\gamma$ and t$\bar{\text{t}}\gamma$ couplings   using top+$\gamma$ production at the LHC
  We consider the electroweak production of a top quark in association with a photon at the LHC to probe the electroweak top quark couplings (t$\bar{\text{t}}\gamma$) as well as the triple gauge boson couplings (WW$\gamma$). The study is based on the modifications of the t$\bar{\text{t}}\gamma$ and WW$\gamma$ interactions via heavy degrees of freedom in the form of dimension-six operators which we add to the standard model Lagrangian. A binned angular asymmetry in single top quark plus photon events and cross section ratio are proposed to probe the anomalous   t$\bar{\text{t}}\gamma$ and WW$\gamma$ couplings. It is shown that the proposed angular asymmetry can distinguish anomalous t$\bar{\text{t}}\gamma$, WW$\gamma$ couplings from the standard model prediction and yield a great sensitivity. 
Seyed Mohsen Etesami, Sara Khatibi, and Mojtaba Mohammadi Najafabadi
hep-ph