Detection of MSSM Higgs bosons from supersymmetric particle cascade decays at the LHC

Abstract

Nuclear Physics, Section B 681 (2004) 31-64. doi:10.1016/j.nuclphysb.2003.12.012Received by publisher: 2003-04-23Harvest Date: 2016-01-04 12:22:37DOI: 10.1016/j.nuclphysb.2003.12.012Page Range: 31-6

The anatomy of electroweak symmetry breaking Tome II: The Higgs bosons in the Minimal Supersymmetric Model

“…A potential source of MSSM Higgs bosons at the LHC is the cascade decays of squarks and gluinos [278,[460][461][462] which are copiously produced in hadronic collisions via strong interactions. These particles could then decay into the heavy inos χ …”

“…Other possibilities for Higgs production in SUSY processes are the direct decays of heavier top and bottom squarks into the lighter ones and Higgs bosons, if large enough squark mass splitting is available [278,462]…”

Higgs production in neutralino decays in the MSSM

“…when the higgsino mass parameter is much larger than the wino mass parameter, |μ| M 2 ) or higgsino-like (i.e. in the opposite situation |μ| M 2 ), this results in the dominance of the decays of the heavier charginos and neutralinos into the lighter states and Higgs bosons, over the same decays with gauge boson final states [6,7]. This is also the case for the so-called "little cascade" in the region M 2 M 1 |μ| where the branching fraction for the decay of theχ 0 2 into the LSP neutralino and the lighter h bosonχ 0 2 → hχ 0 1 is in general larger than that for the decayχ 0 2 → Zχ 0 1 , when kinematically accessible in the two-body channel.…”

LHC Potential for the Higgs Boson Discovery

“…These events are characterized by large E miss T and large jet multiplicity, which can be used to suppress efficiently the SM backgrounds. Figure 13 shows the distribution of the reconstructed invariant bb mass of the χ • 2 → h, H, A + χ • 1 , h, H, A → bb signal and the SUSY and SM background with m A = 150 GeV/c 2 , tanβ = 5, M 2 = 350 GeV/c 2 , µ = 1000 GeV/c 2 , mg = 1200 GeV/c 2 , mq = 800 GeV/c 2 and m˜ = 500 GeV/c 2 for 100 fb −1 [19]. The discovery potential covers the region m A < ∼ 200 GeV/c 2 and is independent of tanβ.…”