On the Higgs cross section at N3LO+N3LL and its uncertainty

Bonvini, Marco; Marzani, Simone; Muselli, Claudio; Rottoli, Luca

doi:10.1007/jhep08(2016)105

Cited by 79 publications

(115 citation statements)

References 56 publications

Supporting

Mentioning

112

Contrasting

Order By: Relevance

“…[22] and the result 48.1 pb ± 2.0 pb (without resummation) employing the Cacciari-Houdeau Bayesian approach [109] to estimate higher unknown orders presented in Ref. [18]. We note that the result of Ref.…”

Section: Cross Section Prediction For the Sm Higgs Boson And Scale Dementioning

confidence: 58%

“…Electroweak corrections [58][59][60] can be included as well, either in terms of the full SM electroweak correction factor, or restricted to the corrections mediated by light quarks, the latter being a more conservative estimate in certain BSM scenarios. For completeness, we note that effects beyond fixed order have been addressed through soft-gluon resummation [18,[61][62][63][64][65][66][67], but those are not included in SusHi.…”

Section: The Program Sushimentioning

confidence: 99%

See 1 more Smart Citation

SusHi Bento: Beyond NNLO and the heavy- top limit

Harlander

Liebler

Mantler

2017

Computer Physics Communications

176

170

View full text Add to dashboard Cite

Version 1.6.0 of the code SusHi is presented. Concerning inclusive CP-even Higgs production in gluon fusion, the following new features with respect to previous versions have been implemented: expansion of the partonic cross section in the soft limit, i.e. around x = M 2 H /ŝ → 1; N 3 LO QCD corrections in terms of the soft expansion; top-quark mass suppressed terms through NNLO; matching to the cross section at x → 0 through N 3 LO. For CP-even and -odd scalars, an efficient evaluation of the renormalization-scale dependence is included, and effects of dimension-5 operators can be studied, which we demonstrate for the SM Higgs boson and for a CP-even scalar with a mass of 750 GeV. In addition, as a generalization of the previously available bb → H cross section, SusHi 1.6.0 provides the cross section for charged and neutral Higgs production in the annihilation of arbitrary heavy quarks. At fixed order in perturbation theory, SusHi thus allows to obtain Higgs cross-section predictions in different models to the highest precision known today. For the SM Higgs boson of M H = 125 GeV, SusHi yields 48.28 pb for the gluon-fusion cross section at the LHC at 13 TeV. Simultaneously, SusHi provides the renormalization-scale uncertainty of ±1.97 pb. Compared to version 1.0.0 the newest SusHi version 1.6.0 now supports the 2-Higgs-DoubletModel (2HDM) and the next-to-minimal supersymmetric standard model (NMSSM). The effects of dimension-5 operators in the calculation of the gluon-fusion cross section can be studied. It allows to calculate the Higgs production cross section from the annihilation of heavy quarks and includes various new features which improve the gluon-fusion cross-section prediction and the associated uncertainty estimate. Links to external codes 2HDMC, MoRe-SusHi and MadGraph5 aMC@NLO can be established. Summary of revisions:Inclusion of 2HDM, NMSSM; Improvements in the prediction of the gluon-fusion cross section: Topquark mass terms up to next-to-next-to leading order, soft expansion and next-to-next-to-next-to leading order corrections in the heavy top-quark effective theory, top squark corrections up to next-to-next-to leading order; dimension-5 operators; analytic determination of the renormalization scale dependence. Inclusion of heavy-quark annihilation cross sections. Link to MoRe-SusHi for the calculation of resummed transverse-momentum distributions. Nature of problem: Calculation of inclusive and exclusive Higgs production cross sections in gluon fusion and heavyquark annihilation in the SM and extended Higgs sectors through next-to-leading order QCD, including (next-to-)next-to-next-to-leading order top-(s)quark contributions and electroweak effects. Solution method: Numerical Monte Carlo integration. References: http://sushi.hepforge.org

show abstract

Section: Cross Section Prediction For the Sm Higgs Boson And Scale Dementioning

confidence: 58%

Section: The Program Sushimentioning

confidence: 99%

SusHi Bento: Beyond NNLO and the heavy- top limit

Harlander

Liebler

Mantler

2017

Computer Physics Communications

176

170

View full text Add to dashboard Cite

show abstract

“…This motivated various studies to go beyond NNLO [28][29][30][31][32][33][34], culminating in the computation of this production process to N 3 LO [5][6][7][8] in the large top-mass limit. 5 It has been demonstrated in various ways that such large corrections mostly originate from soft-virtual contributions [28,30,33,34,38], dominant at large x, and can be resummed to all orders by means of threshold resummation techniques [29,[39][40][41], reaching N 3 LL accuracy [42][43][44][45][46]. 6 N 3 LO+N 3 LL predictions are very close to N 3 LO ones, thus suggesting that perturbative expansion is apparently converging, and giving some confidence that current theoretical predictions, such as the one recommended by the LHC Higgs Cross Section Working Group (HXSWG) [51], are sufficiently accurate for precision phenomenology.…”

Section: Resummed Higgs Cross Section At the Lhc And Beyondmentioning

confidence: 99%

Small-x phenomenology at the LHC and beyond: HELL 3.0 and the case of the Higgs cross section

Bonvini

2018

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

Small-x resummation has been proven recently to be a crucial ingredient for describing small-x HERA data, and the inclusion of small-x resummation in parton distribution function (PDF) determination has a sizeable effect on the PDFs even at the electroweak scale. In this work we explore the implications of small-x resummation at the Large Hadron Collider (LHC) and at a Future Circular Collider (FCC). We construct the theoretical machinery for resumming physical inclusive observables at hadron colliders, and describe its implementation in the public code HELL 3.0. We focus on Higgs production in gluon fusion as a prototypical example, both because it is sensitive to small-x gluons and because of its importance for the LHC physics programme. We find that adding small-x resummation to the N 3 LO Higgs production cross section can lead to an increase of up to 10% at FCC, while the effect is smaller (+1%) at LHC but still important to achieve a high level of precision.ArXiv ePrint: 1805.08785

show abstract

“…Towards small-x resummed parton distribution functions Luca Rottoli Figure 1: Comparison of the fixed-order and matched gluon-gluon xP gg (x, α s ) (left) and the quark-gluon xP qg (x, α s ) (right) splitting functions [39].…”

Section: Pos(dis2017)207mentioning

confidence: 99%

Towards small-x resummed parton distribution functions

Bonvini¹,

Rottoli²

2017

Proceedings of XXV International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2017)

Self Cite

View full text Add to dashboard Cite

We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small-x logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken x when resummation effects are included. The improvement is more marked when comparing NNLO+NLLx fits to NNLO ones, and is particularly noticeable for small-x and small-Q 2 HERA inclusive structure functions. The main effect of the resummation is an enhancement of the gluon and singlet PDFs at small-x, which persists at high scales.

show abstract

On the Higgs cross section at N3LO+N3LL and its uncertainty

Cited by 79 publications

References 56 publications

SusHi Bento: Beyond NNLO and the heavy- top limit

SusHi Bento: Beyond NNLO and the heavy- top limit

Small-x phenomenology at the LHC and beyond: HELL 3.0 and the case of the Higgs cross section

Towards small-x resummed parton distribution functions

Contact Info

Product

Resources

About