Determining Top Quark Couplings at the LHC: Snowmass White Paper
arXiv:1308.5274
Abstract
Top quarks are a prime system for hunting for new physics. Nonetheless, two decades on from their discovery few of their couplings have been measured to high precision. We present an overview of current determinations and the expected sensitivities with 300 fb-1 and 3000 fb-1 of 14 TeV LHC data. In addition to direct limits on the top quark's renormalizable couplings to Standard Model bosons, we also explore what bounds can be set on the coefficients of higher-dimension operators, taking particular four-fermion operators that do not interfere with QCD as a test case. Every coupling we consider will benefit greatly from a dedicated study at the future LHC. Some measurements, like the irrelevant operators, are systematics-limited and will saturate in the near-term. Others, like the important ttbar+Higgs coupling, involve rare processes and thus demand as much data as possible.
prepared for Snowmass 2013
References in corpus (12)
- DELPHES 3, A modular framework for fast simulation of a generic collider experiment
- FeynRules - Feynman rules made easy
- Effective-Field-Theory Approach to Top-Quark Production and Decay
- Measurement of the charge asymmetry in top quark pair production in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector
- Measurement of associated production of vector bosons and top quark-antiquark pairs at sqrt(s) = 7 TeV
- A search for ttbar resonances in the lepton plus jets final state with ATLAS using 4.7 fb^-1 of pp collisions at sqrt(s) = 7 TeV
- A precise determination of top quark electro-weak couplings at the ILC operating at $\roots=500\,\GeV$
- Anomalous Top Couplings at Hadron Colliders Revisited
- Top quark precision physics at the International Linear Collider
- Further exploration of top pair hadroproduction at NNLO
- Single top quark cross section measurement in the t-channel at the high-luminosity LHC
- Top Couplings: pre-Snowmass Energy Frontier 2013 Overview