Dec 6 – 8, 2021
University of Manchester
Europe/London timezone

Towards discrimination and improved modelling of dark-sector showers

Dec 6, 2021, 4:20 PM
Niels Bohr Common Room, 6th Floor Schuster Building (University of Manchester)

Niels Bohr Common Room, 6th Floor Schuster Building

University of Manchester

Department of Physics & Astronomy Oxford Road, Manchester M13 9PL


Sukanya Sinha (University of Witwatersrand)


If dark mesons exist, their evolution and hadronization procedure are currently little constrained. They could decay promptly and result in a very SM QCD like jet structure, even though the original decaying particles are dark sector ones; they could behave as semi-visible jets; or they could behave as completely detector-stable hadrons, in which case the final state is just the missing transverse momentum. Apart from the last case, which is more like a conventional BSM MET signature, the modelling of these scenarios is somewhat an unexplored area, other than the range of phenomenological predictions as implemented in Pythia8's HV module. In this talk I will discuss the prospect of using jet substructure methods for designing observable/s to distinguish between dark jets, semi-visible jets and light q/g jets, by comparing different observables in a IRC-safe linear basis, with some preliminary results, as well as the proposed idea of having a Herwig hidden valley dark shower and hadronisation module. Both these topics are part of my recent MCnet short-term studentship.

Primary author

Sukanya Sinha (University of Witwatersrand)


Andy Buckley (University of Glasgow (GB))

Presentation materials