Regular Article - Theoretical Physics
Running bumps from stealth bosons
Departamento de Física Teórica y del Cosmos, Universidad de Granada, 18071, Granada, Spain
* e-mail: email@example.com
Accepted: 6 March 2018
Published online: 12 March 2018
For the ‘stealth bosons’ S, light boosted particles with a decay into four quarks and reconstructed as a single fat jet, the groomed jet mass has a strong correlation with groomed jet substructure variables. Consequently, the jet mass distribution is strongly affected by the jet substructure selection cuts when applied on the groomed jet. We illustrate this fact by recasting a CMS search for low-mass dijet resonances and show a few representative examples. The mass distributions exhibit narrow and wide bumps at several locations in the 100–300 GeV range, between the masses of the daughter particles A and the parent particle S, depending on the jet substructure selection. This striking observation introduces several caveats when interpreting and comparing experimental results, for the case of non-standard signatures. The possibility that a single boosted particle decaying hadronically produces multiple bumps, at quite different jet masses, and depending on the event selection, brings the anomaly chasing game to the next level.
© The Author(s), 2018