Signal and Backgrounds for the Single Production of Scalar and Vector Leptoquarks at the LHC

Abstract

We perform a detailed analysis of the potentiality of the CERN Large Hadron Collider to study the single production of leptoquarks via $pp\to e^{\pm }q\to$ leptoquark $\to e^{\pm }q$, with $e^{\pm }$ generated by the splitting of photons radiated by the protons. Working with the most general $SU(2{)}_L\otimes U(1{)}_Y$ invariant effective lagrangian for scalar and vector leptoquarks, we analyze in detail the leptoquark signals and backgrounds that lead to a final state containing an $e^{\pm }$ and a hard jet with approximately balanced transverse momenta. Our results indicate that the LHC will be able to discover leptoquarks with masses up to 2--3 TeV, depending on their type, for Yukawa couplings of the order of the electromagnetic one.

Revtex, 23 pages, 11 postscript files. Uses axodraw.sty (included) and epsfig.sty. Typos corrected. To be published in Phys. Rev. D

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• Single Production of Leptoquarks at the Tevatron
• Signal and Backgrounds for Leptoquarks at the LHC II: Vector Leptoquarks
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