Reconstructing the heavy resonance at hadron colliders

Journal Article · Tue Nov 01 04:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.84.096001· OSTI ID:21608075

Park, Chan Beom ^[1]

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1. Instituto de Fisica Teorica UAM/CSIC, Nicolas Cabrera 13-15, Universidad Autonoma de Madrid, Cantoblanco, 28049 Madrid (Spain)

We investigate the method for constructing the invariant mass using the M{sub 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 Large Hadron Collider, as well as a model-independent method to measure the masses of new particles involved in the event.

• OSTI ID: 21608075
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 84; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACCELERATORS
APPROXIMATIONS
CALCULATION METHODS
CERN LHC
CYCLIC ACCELERATORS
DECAY
DISTRIBUTION
EFFICIENCY
ELEMENTARY PARTICLES
HADRONS
MASS
MASS DISTRIBUTION
MASS SPECTRA
MATHEMATICAL SOLUTIONS
PARTICLE DECAY
PARTICLES
RESONANCE
SPATIAL DISTRIBUTION
SPECTRA
STORAGE RINGS
SYNCHROTRONS