Pair production of charged Higgs bosons from bottom-quark fusion

Hong-Sheng, Hou; Wen-Gan, Ma; Ren-You, Zhang; Jiang, Y.; Liu, Han; Li-Rong, Xing

doi:10.1103/physrevd.71.075014

Cited by 12 publications

(7 citation statements)

References 49 publications

(32 reference statements)

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“…For the production of a pair of Higgs bosons, the NLO correction was first obtained in [51]. Later on, NLO corrections have been obtained for this channel considering several BSM scenarios [52][53][54]. For the latter, the bottom quark annihilation process dominates over the gluon fusion even at LO level.…”

Section: Jhep05(2019)030mentioning

confidence: 99%

Higgs pair production from bottom quark annihilation to NNLO in QCD

Ajjath

Banerjee

Chakraborty

et al. 2019

J. High Energ. Phys.

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We present the first results on the two-loop massless QCD corrections to the four-point amplitude $$ b+\overline{b}\to H+H $$ b + b ¯ → H + H in the five flavor scheme, treating bottom quarks as massless. This amplitude is sensitive to the trilinear Higgs boson coupling. Our two-loop result for this amplitude constitutes of purely virtual contributions to the next-to-next-to-leading order QCD predictions for the production of a pair of Higgs bosons at the Large Hadron Collider. Using these two loop amplitudes and exploiting the universality of the soft contributions in perturbative QCD, we obtain the NNLO QCD effects in the soft plus virtual approximation. We find that the inclusion of higher order terms reduce the uncertainties resulting from the unphysical renormalisation and factorisation scales.

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Section: Jhep05(2019)030mentioning

confidence: 99%

Higgs pair production from bottom quark annihilation to NNLO in QCD

Ajjath

Banerjee

Chakraborty

et al. 2019

J. High Energ. Phys.

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“…This was related to the key issue of defining the right factorisation scale µ F as log(µ F /m b ) terms that are resummed in the b-parton picture could overestimate the cross section if µ F were too big. The calculation of the NLO QCD corrections [35,44] solved the issue and confirmed that the…”

Section: Drell-yan and B B Productionmentioning

confidence: 67%

“…The cross section is dependent on tan β . In the MSSM the SUSY-QCD corrections are dominated by negative resummed ∆ b -terms in the bottom quark Yukawa coupling and depend strongly on the MSSM spectrum [35,44].…”

Section: Drell-yan and Bb Productionmentioning

confidence: 99%

Charged Higgs pair production and neutrino effects on the triple Higgs coupling

Baglio¹

2017

Proceedings of Prospects for Charged Higgs Discovery at Colliders — PoS(CHARGED2016)

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Higgs pair production is one of the primary goals of the LHC program. Investigating the effects beyond the Standard Model (BSM) is then of high interest. Two cases are presented to exemplify the impact of BSM physics on Higgs pair production and on the triple Higgs coupling: first a review on charged Higgs pair production mostly in the context of Two-Higgs-Doublet of type II and in particular the Minimal Supersymmetric SM, second a study of the one-loop effects of a heavy neutrino on the triple Higgs coupling.

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“…Note added: While we were in the process of finalizing this work, another paper [40] appeared in which the authors present results which correspond to parts of our sections II and V.…”

Section: Discussionmentioning

confidence: 82%

Charged Higgs boson pairs at the CERN LHC

Alves

Plehn

2005

Phys. Rev. D

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We compute the cross section for pair production of charged Higgs bosons at the LHC and compare the three production mechanisms. The bottom-parton scattering process is computed to NLO, and the validity of the bottom-parton approach is established in detail. The light-flavor Drell-Yan cross section is evaluated at NLO as well. The gluon fusion process through a one-loop amplitude is then compared with these two results. We show how a complete sample of events could look, in terms of total cross sections and distributions of the heavy final states. I. SETTING THE STAGEUnderstanding electroweak symmetry breaking is arguably the biggest challenge in particle physics, and we are confident that we will solve it at the LHC. In the Standard Model, a single Higgs doublet gives mass to the up-type and down-type quarks and also manifests itself as one scalar Higgs boson. Electroweak precision data indicates that this Higgs boson is light [1]. In the supersymmetric extension of the Standard Model we need two Higgs doublets to give mass to the up-type and down-type quarks and to cancel anomalies of the fermionic partners of the Higgs bosons. The particle content of a two-Higgs doublet model (2HDM) consists of two scalars, a pseudo-scalar and a charged Higgs boson. It has been shown that the LHC is guaranteed to find one supersymmetric Higgs boson in the weak boson fusion production process with subsequent decay to tau leptons [2,3]. However, if we want to test a supersymmetric Higgs sector the charged Higgs boson becomes crucial. While there are many ways to add scalars to the Standard Model spectrum and allow them to mix with the Higgs boson, for example radions [4], a charged Higgs boson with all the appropriate couplings as in the 2HDM is much harder to fake. A. Charged Higgs Bosons at the LHCOver the years, there have been many studies of charged Higgs bosons at the LHC. The dominant production processes are in association with a top quark [5,6,7,8], in association with a W boson [9, 10], and charged Higgs pair production [11,12,13,14,15,16,17]. The most promising decay channels are (depending on the charged Higgs mass) τν [18,19,20], bt [21,22,23], and W h 0 [24]. According to studies by ATLAS [19] and CMS [20], the process pp → tH − → t(τν) is currently the most promising combination, in particular for large values of tan β. The reason is that the Yukawa coupling of the charged Higgs boson to quarks includes a term proportional to m b tan β, which means that the tH production cross section is enhanced by a factor tan 2 β. Unfortunately, the same studies indicate that for m H > m t the tH production channel fails for tan β 10 because of the reduced production rate.Pair production of charged Higgs bosons is particularly interesting because three different production processes contribute to the same final state: the usual Drell-Yan production process qq → H + H − through an s-channel Z or a photon [11], the loop-induced gluon fusion process gg → H + H − [12,13,14], and bottom-parton scattering bb → H + H − . The latter tw...

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Pair production of charged Higgs bosons from bottom-quark fusion

Cited by 12 publications

References 49 publications

Higgs pair production from bottom quark annihilation to NNLO in QCD

Higgs pair production from bottom quark annihilation to NNLO in QCD

Charged Higgs pair production and neutrino effects on the triple Higgs coupling

Charged Higgs boson pairs at the CERN LHC

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