Associated production of Higgs bosons and Z particles

Glashow, Sheldon L.; Nanopoulos, Dimitri V.; Yildiz, Asim

doi:10.1103/physrevd.18.1724

Cited by 148 publications

(122 citation statements)

References 12 publications

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“…In the area below the dotted line the Higgs production cross section [26][27][28][29][30] in association with different numbers of jets [31] is large enough to be accessed experimentally for a luminosity of 50 fb −1 .…”

Section: Boundsmentioning

confidence: 99%

LHC: Standard Higgs and hidden Higgs

Englert¹,

Plehn²,

Rauch³

et al. 2012

Physics Letters B

101

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Interpretations of Higgs searches critically involve production cross sections and decay probabilities for different analysis channels. Mixing effects can reduce production rates, while invisible decays can reduce decay probabilities. Both effects may transparently be quantified in Higgs systems where a visible Higgs boson is mixed with a hidden sector Higgs boson. Recent experimental exclusion bounds can be re-interpreted in this context as a sign for non-standard Higgs properties. Should a light Higgs boson be discovered, then our analysis will quantify how closely it may coincide with the Standard Model. [5, 6], so that each experiment alone has about the same sensitivity as the combination in the low mass region, raising the low-mass bound of the Higgs from the LEP2 limit [7] of 114.4 GeV to 115.5/115 GeV and leading to an exclusion of the mass from 131 GeV/127 GeV to 453 GeV/600 GeV by ATLAS/CMS, respectively. Bounds as low as fractions R ≤ 0.3 have been set on the production cross sections with respect to the Standard Model [SM] for some of the masses probed. Given the far reaching consequences, the question arises naturally to what extent Higgs bosons, in slightly generalized scenarios, may still exist in this mass region.On the other hand, a gap from about 130 GeV down to the low-mass limit of about 115 GeV is left, presently, in which a SM-type Higgs signal can be expected to either rise up or plunge in the near future [5, 6]. When a Higgs boson will indeed be discovered in this mass range, the standard-hidden Higgs scenario allows to quantify how well the global properties of the particle coincide with the predictions of the Standard Model.Both these questions have been addressed [8,9] at the theoretical level in a standard-hidden Higgs scenario. The present sequel will include the recent LHC results on the Higgs sector in the analysis. The ground for the fundamental idea to use the Higgs boson as a portal to a novel hidden sector in nature has been laid for general model structures in Ref. [11]. Phenomenological implications [12] can then be studied in specific frameworks like hidden valleys [13]. Other than the Higgs portal there exist two additional portal-type interactions in a renormalizable theory, namely kinetic U (1) mixing [14] and mixing with sterile neutrinos [15].The experimentally observed rates depend on the Higgs production cross sections and the decay branching ratios [16]. In scenarios in which the standard Higgs boson is mixed with another Higgs boson, originating from a hidden sector for instance, the production cross sections are reduced universally by the mixing parameter and, in addition, the visible branching ratios may be lowered by decays into invisible channels induced by mixing. Throughout this paper we will consider the minimal Standard Model Higgs sector as the activator of the visible Higgs boson [17], but the same arguments trivially hold for extended visible Higgs sectors, for example in supersymmetry or other extensions to the Standard Model [18]. In the early theoret...

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Section: Boundsmentioning

confidence: 99%

LHC: Standard Higgs and hidden Higgs

Englert¹,

Plehn²,

Rauch³

et al. 2012

Physics Letters B

101

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“…GeV is quite difficult to cover since in this case the Higgs boson mainly decays to bb-pairs (signature which has a huge QCD background if bquarks cannot be recognized), nevertheless, it should be possible to detect it in the rare γγ-decay mode [12] via the associated production with a W ± boson [13,14] or a tt-pair [15,16]. At the LHC, for M H 0 > ∼ 130 GeV, the "gold-plated" four-lepton mode (i.e.,…”

Section: Introductionmentioning

confidence: 99%

Heavy Higgs boson production and decay viae+e−
Moretti¹
1995
Phys. Rev. D
3
1
1
0
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“…The principal mechanisms for light Higgs boson production at hadron colliders considered in this paper are gg → Higgs [13] followed by Higgs → γγ [14] and associatedtt + Higgs production followed by Higgs →bb, which are of interest at the LHC [3], and W ± * → W ± + Higgs [15] followed by Higgs →bb, which is of interest at the Fermilab Tevatron collider [2].…”

mentioning

confidence: 99%

Observability of the lightest CMSSM Higgs boson at hadron colliders

et al. 2001

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We discuss the observability of the lightest neutral Higgs boson in the constrained MSSM (CMSSM), with universal soft supersymmetry-breaking parameters, at hadron colliders such as the Tevatron and the LHC. We take account of the constraints on parameter space provided by LEP, the measured rate of b → sγ decay, the cosmological relic density Ω χ h 2 , and the recent measurement of g µ − 2. We normalize products of the expected CMSSM Higgs production cross sections and decay branching ratios σ × B relative to those expected for a Standard Model Higgs boson of the same mass. In the h → γγ channel, we find thatIn the W ± /tt+h, h →bb channels, we find that σ(W ± /tt+h)×B(h →bb) CMSSM ∼ 1.05× σ(W ± /tt+h)×B(h →bb) SM . We conclude that the lightest CMSSM Higgs boson should be almost as easy to see as the Standard Model Higgs boson: in particular, it should be discoverable with about 15 fb −1 of luminosity at the Tevatron or 10 fb −1 of luminosity at the LHC.

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Associated production of Higgs bosons and Z particles

Cited by 148 publications

References 12 publications

LHC: Standard Higgs and hidden Higgs

LHC: Standard Higgs and hidden Higgs

Heavy Higgs boson production and decay viae+e−
Moretti¹
1995
Phys. Rev. D
3
1
1
0
View full text Add to dashboard Cite

Observability of the lightest CMSSM Higgs boson at hadron colliders

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Associated production of Higgs bosons and Z particles

Cited by 148 publications

References 12 publications

LHC: Standard Higgs and hidden Higgs

LHC: Standard Higgs and hidden Higgs

Heavy Higgs boson production and decay viae+e−Moretti1 1995Phys. Rev. D3110View full textAdd to dashboardCite

Observability of the lightest CMSSM Higgs boson at hadron colliders

Contact Info

Product

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About

Heavy Higgs boson production and decay viae+e−
Moretti¹
1995
Phys. Rev. D
3
1
1
0
View full text Add to dashboard Cite