Dark Matter Searches in Jet plus Missing Energy in $\rm γp$ collision at CERN LHC

Abstract

In this paper, we investigate the $\rm γp$ photoproduction of jet plus missing energy signal to set limits on the couplings of the fermionic dark matter to the quarks at the LHC via the main reaction $\rm pp\rightarrow pγp\rightarrow p χχj$. We assume a typical LHC multipurpose forward detectors and work in a model independent Effective Field Theory framework. Typically, when we do the background analysis, we also include their corresponding Single Diffractive (SD) productions. Our result shows that by requiring a $5σ$ ($\rm S/\sqrt{B} \geq 5$) signal deviation, with an integrated luminosity of $\rm {\cal L} = 200 fb^{-1}$, the lower bounds of WIMP masses scale can be detected up to $\rm Λ$ equal 665.5, 808.9 and 564.0 GeV for the forward detector acceptances $ξ_1$, $ξ_2$, and $ξ_3$, respectively, where $0.0015<ξ_1<0.5$, $0.1<ξ_2<0.5$ and $0.0015<ξ_3<0.15$.

33pages, 7figures. arXiv admin note: text overlap with arXiv:1406.3897, arXiv:1402.1817, change grammer errors, to appear in Phys.Rev.D