Associated production of nonstandard Higgs bosons at the LHC

Kaplan, David E.; McEvoy, Matthew

doi:10.1103/physrevd.83.115004

Cited by 24 publications

(59 citation statements)

References 25 publications

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“…References [59,60] considered the 4b final state in the context of VBF Higgs production, but this signature is very difficult to distinguish from QCD background. More recently the focus has been on the Wh production mode [191,263,266,267], where the tagged lepton greatly reduces backgrounds and enhances discovery potential.…”

Section: Lhcmentioning

confidence: 99%

“…This case was addressed by [267], which primarily deals with the much more difficult signature h → aa → 4g (also considered in [220,[268][269][270]), with h → 4b considered as a special case that can also make use of heavy flavor tagging. They focus on boosted Higgs production in association with a W or Z (with C For m a ≲ 30 GeV, a boosted Higgs decaying as h → aa → 4j can produce a two-, three-, or four-pronged fat jet.…”

Section: Lhcmentioning

confidence: 99%

“…Clearly there exists motivation for a dedicated experimental search, which could easily be performed by triggering on leptons and missing energy from associated Higgs production, and performing a 4b search similar to the studies by [191,267].…”

Section: Existing Experimental Searches and Limitsmentioning

confidence: 99%

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Exotic decays of the 125 GeV Higgs boson

et al. 2014

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We perform an extensive survey of nonstandard Higgs decays that are consistent with the 125 GeV Higgs-like resonance. Our aim is to motivate a large set of new experimental analyses on the existing and forthcoming data from the Large Hadron Collider (LHC). The explicit search for exotic Higgs decays presents a largely untapped discovery opportunity for the LHC collaborations, as such decays may be easily missed by other searches. We emphasize that the Higgs is uniquely sensitive to the potential existence of new weakly coupled particles and provide a unified discussion of a large class of both simplified and complete models that give rise to characteristic patterns of exotic Higgs decays. We assess the status of exotic Higgs decays after LHC run I. In many cases we are able to set new nontrivial constraints by reinterpreting existing experimental analyses. We point out that improvements are possible with dedicated analyses and perform some preliminary collider studies. We prioritize the analyses according to their theoretical motivation and their experimental feasibility. This document is accompanied by a Web site that will be continuously updated with further information [http://exotichiggs.physics .sunysb.edu].

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Section: Lhcmentioning

confidence: 99%

Section: Lhcmentioning

confidence: 99%

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Exotic decays of the 125 GeV Higgs boson

et al. 2014

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“…One then attempts to build one large "Higgs jet" either through fat cones [67] or the CambridgeAachen algorithm [68]. Having this jet, and after performing some cleaning on it to remove pileup and underlying event [66,69,70], one can then look for structure consistent with having two dominant clusters of energy with approximately equal masses.…”

Section: B Observabilitymentioning

confidence: 99%

Implications of a new light scalar near the bottomonium regime

Baumgart

Katz²

2012

J. High Energ. Phys.

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We study the decay modes of a new, light spin-0 particle, arguing that if the mass of the (pseudo)scalar is ∼ 11 − 15 GeV, it can have an appreciable branching ratio into bottomonium, in particular the rare η b s. Using non-relativistic QCD (NRQCD), we calculate its decay rate to bottomonia for mass splittings greater than the typical momentum transfer within the bound state. It can exceed that of decays to other Standard Model fermions under the assumption of couplings proportional to those of the Standard Model. At smaller splittings, where our computational methods break down, we estimate the rate into bottomonia using data-driven methods. When the spin-0 state decays to bottomonia whose mass is too light to produce B-meson pairs, we get a qualitatively new experimental signature, decays to b-quarks invisible to b-tagging. Such a light, spinless particle can arise in extended Higgs sectors, making this channel potentially observable in decay chains initiated by the subdominant decay of a Standard Model-like Higgs to a pair of them.

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“…This decay channel is well motivated in a wide class of Beyond the Standard Model (BSM) theories [5], such as the Next to Minimal Supersymmetric Standard Model (NMSSM), Higgs singlet extension of the SM, general extended Higgs sector models [6], and little Higgs models. Quite a few phenomenology studies already exist with respect to this channel at the LHC [7][8][9][10][11], with or without using jet substructure techniques. Due to large QCD backgrounds in gluon fusion and vector boson fusion channels, the LHC searches generally focus on the VH associated production channel.…”

Section: Introductionmentioning

confidence: 99%

Exotic Higgs decay $$h\rightarrow \phi \phi \rightarrow 4b$$ h → ϕ ϕ → 4 b at the LHeC

Tang¹,

Zhang²,

Zhu³

2017

Eur. Phys. J. C

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We study the exotic decay of the 125 GeV Higgs boson (h) into a pair of light spin-0 particles (φ) which subsequently decay and result in a 4b final state. This channel is well motivated in models with an extended Higgs sector. Instead of searching at the Large Hadron Collider (LHC) and the high luminosity LHC (HL-LHC) which are beset by large standard model (SM) backgrounds, we investigate this decay channel at the much cleaner Large Hadron Electron Collider (LHeC). With some simple selection cuts this channel becomes nearly free of background at this ep machine, in sharp contrast to the situation at the (HL-)LHC. With a parton level analysis we show that for the φ mass range [20, 60] GeV, with 100 fb −1 luminosity the LHeC is generally capable of constrainingcoupling strength relative to the SM value) to a few percent level (95% CLs). With 1 ab −1 luminosity C 2 4b at a few per mille level can be probed. These sensitivities are much better than the HL-LHC performance and demonstrate the important role expected to be played by the LHeC in probing exotic Higgs decay processes, in addition to the already proposed invisible Higgs decay channel.

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Associated production of nonstandard Higgs bosons at the LHC

Cited by 24 publications

References 25 publications

Exotic decays of the 125 GeV Higgs boson

Exotic decays of the 125 GeV Higgs boson

Implications of a new light scalar near the bottomonium regime

Exotic Higgs decay $$h\rightarrow \phi \phi \rightarrow 4b$$ h → ϕ ϕ → 4 b at the LHeC

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