Pinning down top dipole moments with ultraboosted tops

We investigate existing and future hadron-collider constraints on the top dipole chromomagnetic and chromoelectric moments, two quantities that are expected to be modified in the presence of new physics. We focus first on recent measurements of the inclusive top pair production cross section at the...

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Bibliographic Details
Published in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2015-05, Vol.91 (9), Article 094021
Main Authors: Aguilar-Saavedra, Juan A., Fuks, Benjamin, Mangano, Michelangelo L.
Format: Article
Language:English
Subjects:
Cosmology
Decay
Dipole moment
Gravitation
Invariants
Large Hadron Collider
Pinning
Tops
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Summary:We investigate existing and future hadron-collider constraints on the top dipole chromomagnetic and chromoelectric moments, two quantities that are expected to be modified in the presence of new physics. We focus first on recent measurements of the inclusive top pair production cross section at the Tevatron and at the Large Hadron Collider. We then analyze the role of top-antitop events produced at very large invariant masses, in the context of the forthcoming 13-14 TeV runs of the LHC, and at a future 100 TeV proton-proton collider. In this latter case, the selection of semileptonic decays to hard muons allows to tag top quarks boosted to the multi-TeV regime, strongly reducing the QCD backgrounds and leading to a significant improvement in the sensitivity to anomalous top couplings.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.91.094021