Abstract
In this paper, we investigate sizeable interference effects between a heavy charged Higgs boson signal produced dominantly via ggto toverline{b}{H}^{-} (+ c.c.) followed by the decay {H}^{-}to boverline{t} (+ c.c.) and the irreducible background given by ppto toverline{t}boverline{b} topologies at the Large Hadron Collider (LHC). We show that it may be possible that such effects could spoil current H± 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 potentially 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 might require modifications. We show such effects quantitatively using two different benchmark configurations of the minimal realisation of Supersymmetry, wherein such H± states naturally exist. However, on the basis of the limited computing resources available, we are unable to always bring the statistical error down to a level where all such interference effects are unequivocal, so that we advocate dedicated experimental analyses to confirm this with higher statistics data samples.
Highlights
TotalM10W0 jj (Ge20V0) 300 0.00 M2T00b (G4e0V0 ) 6000.00 20M0T bj4j0(0GeV6)00 800 0.00 MH50±0 jj (G10e0V0 ) 1500 0.00 M50H0 ± b1b0j0j 0(Ge15V0)0 2000appears to be a large interference impact in across the whole mass range, interestingly though the largest contributions are below the charged Higgs mass peak
In this paper, we investigate sizeable interference effects between a heavy charged Higgs boson signal produced dominantly via gg → tbH− (+ c.c.) followed by the decay H− → bt (+ c.c.) and the irreducible background given by pp → ttbb topologies at the Large Hadron Collider (LHC)
The current highest priority, in relation to charged Higgs boson searches at the LHC, is to further establish the H+ → tb decay channel in the heavy mass region. With this in mind, using the framework of a generic 2-Higgs Doublet Model (2HDM) [30], we have investigated the possibility of having large interference effects between signals from a heavy charged Higgs boson via bg → tH− → tW −A → tW −bb and the irreducible background from bg → tW −bb processes
Summary
Appears to be a large interference impact in across the whole mass range, interestingly though the largest contributions are below the charged Higgs mass peak. The result of this would likely be a smearing of the charged Higgs mass bump towards lower values in actual data. The reconstruction in this scenario presents far less distinct signal distributions, which can be seen in the charged Higgs invariant mass plots of figure 9. As the mass difference between the charged Higgs and the sum of the t and b-quark masses is far smaller in this scenario, it appears that the reconstruction is performed very for the signal and. In this scenario the more strict use of b-tagging decreased the ratio of the interference cross section to the signal cross section to 17.4%, though it should be noted the uncertainty on the values in the ≥ 3 b-tag region has grown beyond the magnitude of interference and conclusions in this region are tenuous
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
