Quark and gluon tagging at the LHC.

@article{Gallicchio2011QuarkAG,
  title={Quark and gluon tagging at the LHC.},
  author={Jason Gallicchio and Matthew D. Schwartz},
  journal={Physical review letters},
  year={2011},
  volume={107 17},
  pages={
          172001
        }
}
Being able to distinguish light-quark jets from gluon jets on an event-by-event basis could significantly enhance the reach for many new physics searches at the Large Hadron Collider. Through an exhaustive search of existing and novel jet substructure observables, we find that a multivariate approach can filter out over 95% of the gluon jets while keeping more than half of the light-quark jets. Moreover, a combination of two simple variables, the charge track multiplicity and the p(T)-weighted… CONTINUE READING

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