Anomalous quartic $WWγγ$ and $ZZγγ$ couplings in $γp$ collision at the LHC (1311.1370v2)

Abstract: We analyze the anomalous quartic gauge boson couplings $WW\gamma\gamma$ and $ZZ\gamma\gamma$, described by dimension-6 effective quartic Lagrangian at the LHC. The sensitivities to anomalous quartic gauge couplings $a_{0,c}^{W,Z}/\Lambda^2$ by examining the two different photon-induced processes $pp\to p\gamma p\to p W\gamma qX$ and $pp\to p\gamma p\to p ZZ qX$ with $W$ and $Z$s decaying leptonically are investigated. We show that $\gamma p$ mode of photon-induced reactions at the LHC are able to probe these couplings to the order of $10^{-6}$-$10^{-7}$ GeV$^{-2}$ at 95 % confidence level with $\sqrt s$ = 14 TeV and for proton-proton luminosities in the range of 30-200 fb$^{-1}$.