Search for a light charged Higgs boson decaying to c s-bar in pp collisions at sqrt(s) = 8 TeV

doi:10.48550/arxiv.1510.04252

Cited by 17 publications

(30 citation statements)

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“…First, a light charged Higgs boson, with mass M H + , below the top quark mass, m t , can be searched for in top quark decays, t → H ± b; second, the charged Higgs boson can be produced directly in various production mechanisms, in particular, in association with a top and bottom quark, pp → H ± tb. For a light charged Higgs boson with M H + < m t the first search type is typically more promising and has been in the focus of charged Higgs boson searches at the LHC during Run 1 with center-of-mass energies √ s = 7 and 8 TeV, looking for charged Higgs bosons decaying to τ ν [73,74], cs [75,76] or cb [77]. With the increased center-of-mass energy √ s = 13 TeV of the LHC during Run 2, the direct charged Higgs production, pp → H ± tb, becomes increasingly important, in particular, as it is sensitive to charged Higgs bosons heavier than the top quark.…”

Section: The Two Higgs Doublet Model (2hdm)mentioning

confidence: 99%

Status of the charged Higgs boson in two Higgs doublet models

Arbey

Mahmoudi

Stål³

et al. 2018

Eur. Phys. J. C

172

168

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The existence of charged Higgs boson(s) is inevitable in models with two (or more) Higgs doublets. Hence, their discovery would constitute unambiguous evidence for new physics beyond the Standard Model (SM). Taking into account all relevant results from direct charged and neutral Higgs boson searches at LEP and the LHC, as well as the most recent constraints from flavour physics, we present a detailed analysis of the current phenomenological status of the charged Higgs sector in a variety of wellmotivated two Higgs doublet models (2HDMs). We find that charged Higgs bosons as light as 75 GeV can still be compatible with the combined data, although this implies severely suppressed charged Higgs couplings to all fermions. In more popular models, e.g. the 2HDM of Type II, we find that flavour physics observables impose a combined lower limit on the charged Higgs mass of M H ± 600 GeV -independent of tan β -which increases to M H ± 650 GeV for tan β < 1. We furthermore find that in certain scenarios, the signature of a charged Higgs boson decaying into a lighter neutral Higgs boson and a W boson provides a promising experimental avenue that would greatly complement the existing LHC search programme for charged Higgs boson(s).

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Section: The Two Higgs Doublet Model (2hdm)mentioning

confidence: 99%

Status of the charged Higgs boson in two Higgs doublet models

Arbey

Mahmoudi

Stål³

et al. 2018

Eur. Phys. J. C

172

168

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show abstract

“…A special search for an s-channel resonance with mass of H + up to 3 TeV with the decay mode to t b was performed by ATLAS. Some excesses at 2.4σ for H + mass equal to 150 GeV, as well as for masses between 220 − 320 GeV, are reported by CMS [214,215] and for a very wide H + mass range 200 − 600 GeV by ATLAS [218].…”

Section: Summary Of Search For Charged Scalars At High Energiesmentioning

confidence: 85%

“…These limits are superior to those from the Tevatron search [212], and exclude a sizeable region of the Yukawa-coupling plane 12 , not excluded by B → X s γ. The recent data from CMS [214] on the production in the t t channel of light charged Higgs bosons decaying to cs at the collision energy of 8 TeV and with an integrated luminosity 19.7 fb −1 show no deviation from the SM. Assuming BR(H + → cs) = 100%, the derived upper limits on BR(t → H + b) are 1.2% to 6.5% for M H ± in the range (90-160 GeV), see Fig.…”

Section: Lhc Searches For Charged Higgsmentioning

confidence: 91%

Prospects for charged Higgs searches at the LHC

et al. 2017

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The goal of this report is to summarize the current situation and discuss possible search strategies for charged scalars, in non-supersymmetric extensions of the Standard Model at the LHC. Such scalars appear in Multi-HiggsDoublet models, in particular in the popular Two-HiggsDoublet model, allowing for charged and additional neutral Higgs bosons. These models have the attractive property that electroweak precision observables are automatically in agreement with the Standard Model at the tree level. For the most popular version of this framework, Model II, a discovery of a charged Higgs boson remains challenging, since the parameter space is becoming very constrained, and the QCD background is very high. We also briefly comment on models with dark matter which constrain the corresponding charged a e-mail: Maria.Krawczyk@fuw.edu.pl b e-mail: Per.Osland@uib.no scalars that occur in these models. The stakes of a possible discovery of an extended scalar sector are very high, and these searches should be pursued in all conceivable channels, at the LHC and at future colliders.

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“…The first search for H ± → cs + cb at the LHC was by ATLAS [64] with 5 fb −1 of data at 7 TeV. A search was then carried out by CMS [69] using 20 fb −1 of data at 8 TeV. In [69] the W boson is taken to decay leptonically.…”

Section: B Search For H ± → Cs/cbmentioning

confidence: 99%

Slight excess at 130 GeV in search for a charged Higgs boson decaying to a charm quark and a bottom quark at the Large Hadron Collider

Akeroyd,

Moretti,

Song

2022

Preprint

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Searches for a charged Higgs boson (H ± ) decaying to a charm quark and a bottom quark (H ± → cb) have been carried out at the Large Hadron Collider (LHC) in the decay of top quarks (t → H ± b).In a recent search by the ATLAS collaboration (with all Run II data, 139 fb −1 ) a local excess of around 3σ has been observed, which is best fitted by a charged Higgs boson with a mass (m H ± ) of around 130 GeV and a product of branching ratios (BRs) given by BR(t → H ± b) × BR(H ± → cb) = 0.16% ± 0.06%. In the context of Two-Higgs-Doublet Models (2HDM) with independent Yukawa couplings for H ± we present the parameter space for which this excess (assuming it to be genuine) can be accommodated, taking into account the limits from LHC searches for H ± → cs andGeV and the constraint from b → sγ. It is then shown that such an excess cannot be explained in 2HDMs with natural flavour conservation, but can be accommodated in the flipped Three-Higgs-Doublet Model (3HDM) and in the aligned 2HDM (A2HDM). Upcoming searches with 139 fb −1 in the channels H ± → cb (CMS), H ± → cs (ATLAS/CMS) and H ± → τ ν (ATLAS/CMS) will determine if the excess is the first sign of an H ± with m H ± = 130 GeV.

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Search for a light charged Higgs boson decaying to c s-bar in pp collisions at sqrt(s) = 8 TeV

Cited by 17 publications

References 0 publications

Status of the charged Higgs boson in two Higgs doublet models

Status of the charged Higgs boson in two Higgs doublet models

Prospects for charged Higgs searches at the LHC

Slight excess at 130 GeV in search for a charged Higgs boson decaying to a charm quark and a bottom quark at the Large Hadron Collider

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