Top Quark Pairs at High Invariant Mass - A Model-Independent Discriminator of New Physics at the LHC

Details Top Quark Pairs at High Invariant Mass - A Model-Independent Discriminator of New Physics at the LHC Top Quark Pairs at High Invariant Mass - A Model-Independent Discriminator of New Physics at the LHC

2006-12-02

arxiv.org/abs/hep-ph/0612016v4

Phys.Rev.Lett.100:031801,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 4 figures; version to appear in PRL

Scientific paper

10.1103/PhysRevLett.100.031801

We study top quark pair production to probe new physics at the LHC. We propose reconstruction methods for $t\bar{t}$ semileptonic events and use them to reconstruct the $t\bar{t}$ invariant mass. The angular distribution of top quarks in their c.m. frame can determine the spin and production subprocess for each new physics resonance. Forward-backward asymmetry and CP-odd variables can be constructed to further delineate the nature of new physics. We parametrize the new resonances with a few generic parameters and show high invariant mass top pair production may provide an early indicator for new physics beyond the Standard Model.

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