Reconstructing the heavy resonance at hadron colliders

Abstract

We investigate the method for constructing the invariant mass using the M_T2-assisted on-shell (MAOS) approximation to the invisible particle momenta in the cascade decays of a new particle resonance produced at hadron colliders. We note that the MAOS reconstruction can be defined in several different ways, while keeping the efficiency of approximation at a similar level, and one of them provides a unique solution for each event. It is shown that the invariant mass distribution constructed with the MAOS momenta exhibits a peak at the heavy resonance mass, regardless of the chosen MAOS scheme and the detailed mass spectrum of the particles in the cascade. We stress that the MAOS invariant mass can be used as a clean signal of new particle resonance produced at the LHC, as well as a model-independent method to measure the masses of new particles involved in the event.

20 pages, 6 figures, 1 table; Version accepted for publication in PRD

References in corpus (34)

• PYTHIA 6.4 Physics and Manual
• Gluino Stransverse Mass
• Measuring superparticle masses at hadron collider using the transverse mass kink
• On measuring the masses of pair-produced semi-invisibly decaying particles at hadron colliders
• A Review of the Mass Measurement Techniques proposed for the Large Hadron Collider
• Constraining heavy colored resonances from top-antitop quark events
• Probing the Tevatron t tbar asymmetry at LHC
• Top Quark Forward-Backward Asymmetry and Same-Sign Top Quark Pairs
• LHC Predictions from a Tevatron Anomaly in the Top Quark Forward-Backward Asymmetry
• M_T2-assisted on-shell reconstruction of missing momenta and its application to spin measurement at the LHC
• MTGEN : Mass scale measurements in pair-production at colliders
• On Models of New Physics for the Tevatron Top A_FB
• Transverse Observables and Mass Determination at Hadron Colliders
• Axigluons cannot explain the observed top quark forward-backward asymmetry
• Top-Quark Forward-Backward Asymmetry in Randall-Sundrum Models Beyond the Leading Order
• Forward-backward asymmetries of the bottom and top quarks in warped extra-dimensional models: LHC predictions from the LEP and Tevatron anomalies
• Forward-backward asymmetry of top quark in unparticle physics
• Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHC
• A short comparison between m_T2 and m_CT
• Reconstructing the Higgs boson in dileptonic W decays at hadron collider
• Color Sextet Vector Bosons and Same-Sign Top Quark Pairs at the LHC
• The stransverse mass, MT2, in special cases
• A Revisit to Top Quark Forward-Backward Asymmetry
• Four-lepton LHC events from MSSM Higgs boson decays into neutralino and chargino pairs
• Discovery reach for generic supersymmetry at the LHC: MT2 versus missing transverse momentum selections for pMSSM searches
• Speedy Higgs boson discovery in decays to tau lepton pairs : h->tau,tau
• Measuring the Higgs boson mass with transverse mass variables
• Wedgebox analysis of four-lepton events from neutralino pair production at the LHC
• Extracting MSSM Masses From Heavy Higgs Decays to Four Leptons at the LHC
• Determination of the Spin of New Resonances in Electroweak Gauge Boson Pair Production at the LHC
• Two jets and missing $E_T$ signature to determine the spins of the new particles
• Transverse mass and invariant mass observables for measuring the mass of a semi-invisibly decaying heavy particle
• A comment on "Amplification of endpoint structure for new particle mass measurement at the LHC"
• How to Detect `Decoupled' Heavy Supersymmetric Higgs Bosons

Cited by in corpus (15)

• Reducing combinatorial uncertainties: A new technique based on MT2 variables
• Improving the sensitivity of stop searches with on-shell constrained invariant mass variables
• Mass reconstruction with $M_2$ under constraint in semi-invisible production at a hadron collider
• Reconstructing semi-invisible events in resonant tau pair production from Higgs
• Resolving Combinatorial Ambiguities in Dilepton $t\bar{t}$ Event Topologies with Constrained $M_2$ Variables
• $\tau \to \ell +$ invisible through invisible-savvy collider variables
• Singularity Variables for Missing Energy Event Kinematics
• YAM2: Yet another library for the $M_2$ variables using sequential quadratic programming
• Dreaming Awake: Disentangling the Underlying Physics in Case of a SUSY-like Discovery at the LHC
• A singular way to search for heavy resonances in missing energy events
• Identifying the production process of new physics at colliders; symmetric or asymmetric?
• Constraining new resonant physics with top spin polarisation information
• The Lightest Massive Invisible Particles at the LHC
• A new approach to semi-leptonic tags in $B$-meson semi-invisible decays
• Could $M_{T2}$ be a singularity variable?