Signatures of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mover accent="true"><mml:mi>R</mml:mi><mml:mo accent="true" stretchy="false">˜</mml:mo></mml:mover><mml:mn>2</mml:mn></mml:msub></mml:math> class of leptoquarks at the upcoming <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>e</mml:mi><mml:mi>p</mml:mi></mml:math> colliders
Rojalin Padhan, Sanjoy Mandal, Manimala Mitra, Nita Sinha
Abstract
We explore the signatures of the ${\stackrel{\texttildelow{}}{R}}_{2}$ class of leptoquark (LQ) models at the proposed ${e}^{\ensuremath{-}}p$ and ${e}^{+}p$ colliders. We carry out an analysis for the proposed colliders, LHeC, and FCC-eh, with center of mass (c.m.) energy 1.3 TeV and 3.46 TeV, respectively. For ${\stackrel{\texttildelow{}}{R}}_{2}$ class of LQ models, there are a number of final states that can arise from LQs production and their subsequent decays. In this report we do a detailed cut-based analysis for the ${l}^{\ifmmode\pm\else\textpm\fi{}}j$ final state. We also discuss the effect of polarized electron and positron beams on LQ production and in turn on ${l}^{\ifmmode\pm\else\textpm\fi{}}j$ production. At LHeC, the final state ${l}^{+}j$ has a very good discovery prospect. We find that, with only $100\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data, one can probe LQs of masses up to 1.2 TeV with $5\ensuremath{\sigma}$ significance, even with a generic set of cuts. On the contrary, at FCC-eh, one can probe LQ masses upto 2.2 TeV (for ${e}^{\ensuremath{-}}$ beam) and 3 TeV (for ${e}^{+}$ beam), at more than $5\ensuremath{\sigma}$ significance with luminosity $1000\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ and $500\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$, respectively.