Production of Higgs bosons in proton colliders. QCD corrections

Djouadi, Abdelhak; Spira, M.; Zerwas, P.M.

doi:10.1016/0370-2693(91)90375-z

Cited by 803 publications

(841 citation statements)

References 17 publications

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“…These results have been obtained in the context of effective field theories, both for fermions and scalar loops in references [4,42] and [27] respectively. Choosing the MS scheme -notice JHEP01(2007)082 that in the infinite mass limit, the scheme dependence due to mass renormalization cancels out-we obtain…”

Section: Virtual Corrections To Gg → Hmentioning

confidence: 77%

Two-loop amplitudes and master integrals for the production of a Higgs boson via a massive quark and a scalar-quark loop

Anastasiou

Beerli

Bucherer

et al. 2007

J. High Energy Phys.

184

233

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Abstract:We compute all two-loop master integrals which are required for the evaluation of next-to-leading order QCD corrections in Higgs boson production via gluon fusion. Many two-loop amplitudes for 2 → 1 processes in the Standard Model and beyond can be expressed in terms of these integrals using automated reduction techniques. These integrals also form a subset of the master integrals for more complicated 2 → 2 amplitudes with massive propagators in the loops. As a first application, we evaluate the two-loop amplitude for Higgs boson production in gluon fusion via a massive quark. Our result is the first independent check of the calculation of Spira, Djouadi, Graudenz and Zerwas. We also present for the first time the two-loop amplitude for gg → h via a massive squark.

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Section: Virtual Corrections To Gg → Hmentioning

confidence: 77%

Two-loop amplitudes and master integrals for the production of a Higgs boson via a massive quark and a scalar-quark loop

Anastasiou

Beerli

Bucherer

et al. 2007

J. High Energy Phys.

184

233

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“…At the LHC, Higgs bosons will be predominantly produced through the gluon fusion process due to the large flux of gluons in the protons at these energies. They can be detected through the rare two photon decay mode which has less QCD background than other signals.In pQCD, the total cross sections for the DY production of di-leptons and Higgs boson production are known upto next-to-next-to-leading order (NNLO) level [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]. However, due to the complexity involved with the top quark loops, the Higgs production cross sections are only known in the large top quark mass limit beyond the next-to-leading order (NLO).…”

mentioning

confidence: 99%

QCD threshold corrections to di-lepton and Higgs rapidity distributions beyond N2LO

2007

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We present threshold enhanced QCD corrections to rapidity distributions of di-leptons in the DrellYan process and of Higgs particles in both gluon fusion and bottom quark annihilation processes using Sudakov resummed cross sections. We have used renormalisation group invariance and the mass factorisation theorem that these hard scattering cross sections satisfy as well as Sudakov resummation of QCD amplitudes. We find that these higher order threshold QCD corrections stabilise the theoretical predictions under scale variations.Perturbative Quantum Chromodynamics (pQCD) provides a framework to successfully compute various observables in the collisions of hadrons at high energies. Recent theoretical advances in the computations of higher order QCD radiative corrections have lead to precise results for several important observables. Because of this progress, we can now predict these observables with unprecedented accuracy for physics studies at the Tevatron collider in Fermilab as well as at the upcoming Large Hadron Collider (LHC) in CERN [1].The Drell-Yan (DY) production of di-leptons [2] has been one of the most important probes of the structure of hadrons. It is also one of the dominant production processes at hadron colliders. At the LHC, it will serve as a luminosity monitor which is very important to precisely calibrate the machine for searches for physics beyond the Standard Model (SM). In DY production, a pair of leptons is produced through the decay of virtual photons, Z and W bosons that result from the collisions of incoming partons (quarks and gluons) in the hadrons. At hadron colliders, the DY process provides precise measurements of various standard model parameters. Rapidity distributions of Z bosons [3] and charge asymmetries of leptons coming from W boson decays [4] can probe the structure of the hadrons and possible excess events in di-lepton invariant mass distributions can point to physics beyond the standard model such as R-parity violating supersymmetric models and models with Z ′ , or with contact interactions [5]. Both D0 and CDF collaborations [6] at the Fermilab Tevatron made precise measurements of Z and W production cross sections and asymmetries which not only allowed for stringent tests of the standard model but also play an important role in the Higgs search at future colliders. These measurements are also possible at the LHC due to the large cross sections for the DY process.The other process which is equally important is Higgs boson production at these colliders because it will establish the Standard Model as well as look for beyond the SM Higgs [7,8]. The Higgs boson, which is responsible for the electroweak symmetry breaking in the Standard Model, is yet to be discovered. The search for this particle has been going on at the Fermilab Tevatron and is one of the most important tasks for the CERN LHC. The LEP experiments in the past provided vital information on the possible mass range of this particle [9]. The lower bound on the mass is 114.4 GeV/c 2 and an upper bound is ...

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“…They are known both for infinite [24] and finite [25,26] loop quark masses and, at the √ s = 7 TeV LHC, lead to a K-factor K NLO ∼ 1.8 in the low Higgs mass range, if the central scale of the cross section is chosen to be M H . It has been shown in Ref.…”

Section: The Sm Higgs Production Cross Sectionsmentioning

confidence: 99%

Higgs physics: Theory

Djouadi

2012

Pramana - J Phys

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Abstract. I review the theoretical aspects of the physics of Higgs bosons, focusing on the elements that are relevant for the production and detection at present hadron colliders. After briefly summarizing the basics of electroweak symmetry breaking in the Standard Model, I discuss Higgs production at the LHC and at the Tevatron, with some focus on the main production mechanism, the gluon-gluon fusion process, and summarize the main Higgs decay modes and the experimental detection channels. I then briefly survey the case of the minimal supersymmetric extension of the Standard Model. In a last section, I review the prospects for determining the fundamental properties of the Higgs particles once they have been experimentally observed.

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Production of Higgs bosons in proton colliders. QCD corrections

Cited by 803 publications

References 17 publications

Two-loop amplitudes and master integrals for the production of a Higgs boson via a massive quark and a scalar-quark loop

Two-loop amplitudes and master integrals for the production of a Higgs boson via a massive quark and a scalar-quark loop

QCD threshold corrections to di-lepton and Higgs rapidity distributions beyond N2LO

Higgs physics: Theory

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