Leptonic Monotops at LHC
arXiv:1310.7600 · doi:10.1103/PhysRevD.89.014016
Abstract
We study the possibility of detecting New Physics (NP) phenomena at the LHC through a new search strategy looking at the monotop (top plus missing energy) signature which is common to a variety of NP models. We focus on the leptonic top decay mode and study the discovery or exclusion reach of the 2012 LHC data for three example models. Contrary to the hadronic mode, in this case the problematic QCD multijet background can be safely neglected. We find that the key kinematic variable to suppress most of the remaining SM backgrounds is the transverse mass of the charged lepton and missing energy. In fact, one could expect that the single-top production measurements already address the monotop signature in this mode. This is however not the case because in the SM single-top production the transverse mass has an end point determined by the W mass, while the NP signals typically have an additional source of missing energy. We compare, under the same conditions, our monotop search strategy with existing single-top measurements and find a considerable improvement in the monotop signature reach.
21 pages, 6 figures
References in corpus (14)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- PYTHIA 6.4 Physics and Manual
- Vector boson pair production at the LHC
- Two-loop soft anomalous dimensions for single top quark associated production with a W- or H-
- Next-to-next-to-leading-order collinear and soft gluon corrections for t-channel single top quark production
- NNLL resummation for s-channel single top quark production
- Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
- Inclusive and differential measurements of the t t-bar charge asymmetry in proton-proton collisions at sqrt(s) = 7 TeV
- Top quark asymmetry from a non-Abelian horizontal symmetry
- Deciphering top flavor violation at the LHC with B factories
- Search for flavor changing neutral currents in top quark decays in pp collisions at 7 TeV
- Search for a dark matter candidate produced in association with a single top quark in collisions at TeV
- Forward Tevatron Tops and Backward LHC Tops with Associates
Cited by in corpus (20)
- Confronting lepton flavor universality violation in B decays with high- tau lepton searches at LHC
- Confronting new physics theories to LHC data with MadAnalysis 5
- Search for monotop signatures in proton-proton collisions at sqrt(s) = 8 TeV
- Search for invisible particles produced in association with single-top-quarks in proton-proton collisions at = 8 TeV with the ATLAS detector
- Monotop phenomenology at the Large Hadron Collider
- Revisiting monotop production at the LHC
- Shedding light on the asymmetry: the photon handle
- Studying the sensitivity of monotop probes to compressed supersymmetric scenarios at the LHC
- Leptonic mono-top from single stop production at LHC
- Tagging a mono-top signature in Natural SUSY
- Complete NLO corrections to top-quark pair production with isolated photons
- Probing Radiative Neutrino Mass Generation through Monotop Production
- Single-top final states as a probe of top-flavoured dark matter models at the LHC
- Signatures of top flavour-changing dark matter
- Mono-top Signature from Supersymmetric Channel
- Characterizing New Physics with Polarized Beams at High-Energy Hadron Colliders
- Long-lived Colored Scalars at the LHC
- Probing bottom-associated production of a TeV scale scalar decaying to a top quark and dark matter at the LHC
- Mono-top Signature from Fermionic Top-partner
- Signs of Tops from Highly Mixed Stops