Boosted objects: a probe of beyond the standard model physics

Abstract

We present the report of the hadronic working group of the BOOST2010 workshop held at the University of Oxford in June 2010. The first part contains a review of the potential of hadronic decays of highly boosted particles as an aid for discovery at the LHC and a discussion of the status of tools developed to meet the challenge of reconstructing and isolating these topologies. In the second part, we present new results comparing the performance of jet grooming techniques and top tagging algorithms on a common set of benchmark channels. We also study the sensitivity of jet substructure observables to the uncertainties in Monte Carlo predictions.

Pileup per particle identification

“…in phenomenological studies, larger jets receive more pileup contamination and are commonplace in substructure studies where correcting more than only a jet's p T becomes important [34][35][36]. We choose R = 0.7 as a compromise between these applications.…”

“…Here we show results for jet mass which is considered a reasonable proxy for generic jet shapes and is used in many applications such as boosted object tagging (see [34][35][36] and references therein). First we look at jet mass for central jets with 100 GeV < p T < 200 GeV.…”

Deep-learning top taggers or the end of QCD?

“…Their jet substructure allows us to search for hadronic decays for example of Higgs bosons [1], weak gauge bosons [2][3][4], or top quarks [5][6][7][8][9][10][11][12][13][14][15] in a shower evolution otherwise described by QCD radiation [16][17][18][19]. Given this success, a straightforward question to ask is whether we can analyze the same jet substructure patterns without relying on advanced QCD algorithms.…”

LHC top partner searches beyond the 2 TeV mass region

“…Many available methods for boosted top tagging exist in the literature (see for instance refs. [15,16,18,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] and references therein). In addition, several interesting proposals for boosted W tagging appeared recetly in refs.…”