Is a high $P_T$ muon of the $e^{+}p\to {\mu }^{+}X$ event observed at HERA a signature of the stop?

Abstract

We investigate the $e^{+}p\to {\mu }^{+}X$ event with high transverse momenta observed at HERA (H1) and show that this event could be interpreted as a signature of the single production of the scalar top quark in a supersymmetric model with $R$-parity breaking interactions. The event topology of the H1 event is rather characteristic and in fact it can be simulated by our specific scenario if we reasonably choose our model parameters to be ({\romannumeral 1}) $m_{\tilde{d},\tilde{b},\tilde{\nu }}$ $\stackrel{>}{\sim }$ $1$TeV [$0.8$TeV] for ${\lambda }_{131}^{\prime }$ $=$ $0.1$ [$0.05$] and ({\romannumeral 2}) $m_{{\tilde{W}}_1}$ $\stackrel{<}{\sim }$ $150$GeV, $100$GeV $\stackrel{<}{\sim }$ $m_{{\tilde{t}}_1}$ $\stackrel{<}{\sim }$ $200$GeV and ${\lambda }_{131}^{\prime }$ $\stackrel{>}{\sim }$ $0.05$.

8 pages, LaTeX, 4 figures (included in a separate .uu file)

References in corpus (5)

• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• New vector-scalar contributions to neutrinoless double beta decay and constraints on R-parity violation
• R-Parity Violation at HERA
• Signatures of Scalar Top with R-parity Breaking Coupling at HERA

Cited by in corpus (9)

• Isolated electrons and muons in events with missing transverse momentum at HERA
• Stops in R-parity Breaking Model for High-$Q^2$ Events at HERA
• Supersymmetry and Charged Current Events at HERA
• TESLA*HERA Based gamma-p and gamma-A Colliders
• Signatures of heavy Majorana neutrinos and HERA's isolated lepton events
• Single (anti-)top quark production in association with a lightest neutralino at LHeC
• High P_T Leptons and W Production at HERA
• Isolated Lepton Events at HERA: SUSY R-Parity Violation?
• HERA Physics Beyond the Standard Model