Soft-gluon resummation for Higgs boson production at hadron colliders

Catani, Stefano; Florian, Daniel de; Grazzini, Massimiliano; Nason, Paolo

doi:10.1088/1126-6708/2003/07/028

Cited by 569 publications

(752 citation statements)

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“…In addition to these fixed order results, the resummation programs for the threshold corrections to the total cross sections for DY and Higgs production have also been very successful [28,29](see also [30]). See [22,31] for next-to-next-to-leading logarithmic (NNLL) resummation results. Due to several important QCD results at the three loop level that are recently available [32][33][34][35][36][37][38], the resummation upto N 3 LL has also become a reality [39][40][41][42].…”

Section: Introductionmentioning

confidence: 99%

“…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).…”

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confidence: 99%

“…while the σ I are known for both DY and Higgs production upto NNLO level [17][18][19][20][21][22][23][24][25][26][27]. An alternative method is to take N → ∞ on both sides of eqn.…”

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confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

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

2007

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“…These effects of multiple soft gluon emission can, however, be taken into account to all orders in perturbation theory by performing a resummation of the threshold logarithms. For inclusive Higgs boson production, the resummation is completely known to the next-tonext-to-leading logarithmic (NNLL) accuracy [16] 2 . Thanks to the interplay of the partonic cross sections with the parton distributions, threshold resummation considerably improves the predictive power of the theoretical calculations even in situations where one is not very close to the hadronic threshold s = m 2 H .…”

Section: Introductionmentioning

confidence: 99%

Threshold resummation for high-transverse-momentum Higgs production at the LHC

Kulesza

Vogelsang

2006

J. High Energy Phys.

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We study the resummation of large logarithmic QCD corrections for the process pp → H + X when the Higgs boson H is produced at high transverse momentum. The corrections arise near the threshold for partonic reaction and originate from soft gluon emission. We perform the all-order resummation at next-to-leading logarithmic accuracy and match the resummed result with the next-to-leading order perturbative predictions. The effect of resummation on the Higgs transverse momentum distribution at the LHC is discussed.November 2005

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“…The challenging calculation of the next-to-next-to-leading-order (NNLO) contribution has been done [27] only in the EFT approach with M H ≪ 2m t and, at √ s = 7 TeV, it leads to a ≈ 25% increase of the cross section, K NNLO ∼ 2.5. The resummation of soft gluons is known up to next-to-next-to-leading-logarithm (NNLL) and, again, increases the cross section by slightly less than 10% [28,29]. The effects of soft-gluon resumation at NNLL can be accounted for in σ NNLO (gg → H) by lowering the central value of the renormalization and factorization scales, from µ 0 = µ R = µ F = M H to µ 0 = 1 2 M H ; see e.g.…”

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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Soft-gluon resummation for Higgs boson production at hadron colliders

Cited by 569 publications

References 64 publications

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

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

Threshold resummation for high-transverse-momentum Higgs production at the LHC

Higgs physics: Theory

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