Precise determination of the neutral Higgs boson masses in the MSSM

Allanach, B. C.; Djouadi, Abdelhak; Kneur, Jean-Loïc; Porod, W.; Slavich, Pietro

doi:10.1088/1126-6708/2004/09/044

Cited by 302 publications

(340 citation statements)

References 115 publications

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“…At least for not too heavy Higgs bosons, this larger uncertainty reconciles the MSTW and ABKM/HERAPDF predictions. 12 Note that for M H < ∼ 200 GeV, we obtain smaller uncertainties compared to the ≈ ±15-20% uncertainty of σ NNLO (gg → H) at the Tevatron, a reflection of the better control on the behavior of the gluon density at moderate-x values (relevant for the lHC) compared to high-x values (relevant for the Tevatron).…”

Section: Jhep03(2011)055mentioning

confidence: 63%

“…However, we will view this uncertainty as a measure of the difference between the various possible parameterizations of the PDFs and, hence, consider it as a true theoretical uncertainty with no statistical ground as will be discussed shortly. 12 Note that we could also take into account the effects due to the bottom and charm quark masses on the PDFs. Indeed, a change in the fitted masses for these quarks may affect the gluon splitting and hence alter the shape of the gluon-gluon luminosity in gg → H. We have estimated quantitatively this effect by using the m b and mc dependent MSTW PDFs [89] with mc = 1.40 ± 0.15 GeV and m b = 4.75 ± 0.05 GeV.…”

Section: Jhep03(2011)055mentioning

confidence: 99%

“…In this minimal realization of electroweak symmetry breaking, one complex Higgs doublet field is introduced which implies the existence of a single neutral scalar particle, the Higgs boson H. In supersymmetric theories [6], that are widely considered as the most attractive extensions of the SM as they protect the Higgs boson mass against large radiative corrections and stabilize the hierarchy between the electroweak and Planck scales, the Higgs sector is extended to contain at least two Higgs doublet fields. The Minimal Supersymmetric Standard Model (MSSM) predicts the existence of five Higgs particles: two CP-even Higgs particles h and H, a CP-odd A boson and two charged H ± particles [7][8][9][10][11][12]. The search for these new scalar particles is the main goal of present high-energy colliders.…”

Section: Introductionmentioning

confidence: 99%

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Higgs production at the lHC

Baglio

Djouadi

2011

J. High Energ. Phys.

172

194

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Abstract:We analyze the production of Higgs particles at the early stage of the CERN large Hadron Collider with a 7 TeV center of mass energy (lHC). We first consider the case of the Standard Model Higgs boson that is mainly produced in the gluon-gluon fusion channel and to be detected in its decays into electroweak gauge bosons, gg → H → W W, ZZ, γγ. The production cross sections at √ s = 7 TeV and the decay branching ratios, including all relevant higher order QCD and electroweak corrections, are evaluated. An emphasis is put on the various theoretical uncertainties that affect the production rates: the significant uncertainties from scale variation and from the parametrization of the parton distribution functions as well as the uncertainties which arise due to the use of an effective field theory in the calculation of the next-to-next-to-leading order corrections. The parametric uncertainties stemming from the values of the strong coupling constant and the heavy quark masses in the Higgs decay branching ratios, which turn out to be non-negligible, are also discussed. The implications for different center of mass energies of the proton collider, √ s = 8-10 TeV as well as for the design energy √ s = 14 TeV, are briefly summarized. We then discuss the production of the neutral Higgs particles of the Minimal Supersymmetric extension of the Standard Model in the two main channels: gluon-gluon and bottom quark fusion leading to Higgs bosons which subsequently decay into tau lepton or b-quark pairs, gg, bb → Higgs → τ + τ − , bb. The Higgs production cross sections at the lHC and the decay branching ratios are analyzed. The associated theoretical uncertainties are found to be rather large and will have a significant impact on the parameter space of the model that can be probed.

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Section: Jhep03(2011)055mentioning

confidence: 63%

Section: Jhep03(2011)055mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Higgs production at the lHC

Baglio

Djouadi

2011

J. High Energ. Phys.

172

194

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“…While h ≃ H SM if m A is large, in general the bound on m h depends on MSSM parameters, including CP violating phases that we have ignored in our analysis. The evaluation of m h is also uncertain to about ∼ 3 GeV due to missing two-loop corrections [37]. For these reasons, we do not include any bound on m h in the LEP2-excluded blue region, but only show the boundary of the region m h ≤ 110 GeV by the magenta contour (lower-left) in the figure.…”

Section: The Msugra Modelmentioning

confidence: 99%

Collider signals and neutralino dark matter detection in relic-density-consistent models without universality

Baer

Mustafayev

Park

et al. 2008

J. High Energy Phys.

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We present brief synopses of supersymmetric models where either the neutralino composition or its mass is adjusted so that thermal relic neutralinos from the Big Bang saturate the measured abundance of cold dark matter in the universe. We first review minimal supergravity (mSUGRA), and then examine its various one-parameter extensions where we relax the assumed universality of the soft supersymmetry breaking parameters. Our goal is to correlate relic-density-allowed parameter choices with expected phenomena in direct, indirect and collider dark matter search experiments. For every non-universal model, we first provide plots to facilitate the selection of "dark-matter allowed" parameter space points, and then present salient features of each model with respect to searches at Tevatron, LHC and ILC and also direct and indirect dark matter searches. We present benchmark scenarios that allow one to compare and contrast the non-universal models with one another and with the paradigm mSUGRA framework. We show that many implications about sparticle properties and collider signals drawn from the analysis of the relic density constraint within mSUGRA do not carry over to simple one-parameter extensions of the mSUGRA framework. We find that in many relic-density-consistent models, there is one (or more) detectable edge in the invariant mass distribution of same-flavour, opposite sign dileptons in SUSY cascade decay events at the LHC. Finally, we scan the parameter space of these various models, requiring consistency with the LEP2 constraint on the chargino mass, and with the observed relic density, and examine prospects for direct and indirect dark matter detection. We find that in a large number of cases the mechanism that causes the early universe neutralino annihilation rate to be large (so as to produce the measured relic density) also enhances the direct detection rate, and often also the rates for indirect detection of neutralino dark matter.

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“…For the MSSM detailed estimates for theoretical uncertainties of the Higgs-mass predictions are available, see e.g. [34,35]. Automated estimates of the theoretical uncertainties depending on the considered parameter point within the MSSM can, e.g., be performed with FeynHiggs [34,[36][37][38][39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

Higgs-boson masses and mixing matrices in the NMSSM: analysis of on-shell calculations

et al. 2017

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We analyze the Higgs-boson masses and mixing matrices in the NMSSM based on an on-shell (OS) renormalization of the gauge-boson and Higgs-boson masses and the parameters of the top/scalar top sector. We compare the implementation of the OS calculations in the codes NMSSM-CALC and NMSSM-FeynHiggs up to O(α t α s ). We identify the sources of discrepancies at the one-and at the twoloop level. Finally we compare the OS and DR evaluation as implemented in NMSSMCALC. The results are important ingredients for an estimate of the theoretical precision of Higgs-boson mass calculations in the NMSSM.

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Precise determination of the neutral Higgs boson masses in the MSSM

Cited by 302 publications

References 115 publications

Higgs production at the lHC

Higgs production at the lHC

Collider signals and neutralino dark matter detection in relic-density-consistent models without universality

Higgs-boson masses and mixing matrices in the NMSSM: analysis of on-shell calculations

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