The Bulk RS KK-gluon at the LHC
By B. Lillie, L. Randall, Lian-tao Wang. 2007
270 citations recorded by the source corpus.
We study the possibility of discovering and measuring the properties of the lightest Kaluza-Klein excitation of the gluon in a Randall-Sundrum scenario where the Standard Model matter and gauge fields propagate in the bulk. The KK-gluon decays primarily into top quarks. We discuss how to use the t final states to discover and probe the properties of the KK-gluon. Identification of highly energetic tops is crucial for this analysis. We show that conventional identification methods relying on well separated decay products will not work or heavy resonances but suggest alternative methods for top identification for energetic tops. We find, assuming good efficiency for this identification, that resonances with masses less than 5 TeV can be discovered if the algorithm to identify high pT tops can reject the QCD background by a factor of 10. We also find that for similar or lighter masses the spin can be determined and for lighter masses the chirality of the coupling to t can be measured. Since the energetic top pair final state is a generic signature for a large class of new physics as the top quark presumably couples most strongly to the electroweak symmetry breaking sector, the methods we have outlined to study the properties of the KK-gluon should also be important in other scenarios.
Subfields: Artificial Intelligence, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/fa2e682ffe707c51bbb12b47c006126396c7b046
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Citations in the corpus
- Efficient identification of boosted semileptonic top quarks at the LHC (2010, methodology): “Assuming the model curves of [16] or [17], respectively, we find that a 100 fb run of 14 TeV LHC can potentially discover a KK gluon up to about 4.”
- Opportunities in Flavour Physics at the HL-LHC and HE-LHC (2018, methodology): “Using the benchmark RS model from [1410], the most recent CMS analysis for tt̄ resonance searches, using both hadronic and leptonic tops, sets a lower bound of 4.”
- Playing tag with ANN: boosted top identification with pattern recognition (2015, background): “Examples of new physics leading to boosted top signatures include Kaluza-Klein gluons [2, 3] and string Regge states [4] of the Randall-Sundrum model, stops [5] and gluinos [6] of supersymmetry, top and light quark partner decays in Composite Higgs models [7–12], and many others.”
- Discovering the top partners at the LHC using same-sign dilepton final states (2008, background): “(9)See also [41, 42] for the related issue of the identification of highly boosted tops.”
- Towards jetography (2009, background): “This is motivated in part because high-mass tt̄ resonances are a feature of many new physics scenarios (see for example [190, 178, 191, 192, 193] and references therein).”