Nov 4 – 8, 2019
Adelaide Convention Centre
Australia/Adelaide timezone

Signal versus Background Interference in $H^+\to t\bar b$ Signals for MSSM Benchmark Scenarios

Nov 4, 2019, 2:00 PM
Hall G (Adelaide Convention Centre)

Hall G

Adelaide Convention Centre

Oral Track 6 – Physics Analysis Track 6 – Physics Analysis


Riley Patrick (The University of Adelaide)


In this talk I will present an investigation into sizeable interference effects between a {heavy} charged Higgs boson signal produced via $gg\to t\bar b H^-$ (+ c.c.) followed by the decay $H^-\to b\bar t$ (+ c.c.) and the irreducible background given by $gg\to t\bar t b \bar b$ topologies at the Large Hadron Collider (LHC). I will show how such effects could spoil current $H^\pm$ searches where signal and background are normally treated separately. The reason for this is that a heavy charged Higgs boson can have a large total width, in turn enabling such interferences, altogether leading to very significant alterations, both at the inclusive and exclusive level, of the yield induced by the signal alone. This therefore implies that currently established LHC searches for such wide charged Higgs bosons require modifications. This is shown quantitatively using two different benchmark configurations of the minimal realisation of Supersymmetry, wherein such $H^\pm$ states naturally exist.

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Primary authors

Abdesslam Arhrib (AbdelMalek Essaadi university) Mr Duarte Azevedo Dr Rachid Benbrik (Cadi Ayyad University) Mr Hicham Harouiz Stefano Moretti (Science and Technology Facilities Council STFC (GB)) Riley Patrick (The University of Adelaide) Rui Santos (ISEL)

Presentation materials