Exact N3LO results for qq′ → H + X

Anzai, C.; Hasselhuhn, A.; Höschele, Maik; Hoff, Jens; Kilgore, William B.; Steinhauser, Matthias; Ueda, Takahiro

doi:10.1007/jhep07(2015)140

Cited by 22 publications

(36 citation statements)

References 142 publications

(148 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculation of these functions in dimensional regularization is a standard way to determine the splitting functions governing the scale dependence (evolution) of the perturbatively incalculable but process-independent parton and fragmentation distributions. The coefficient functions (partonic cross sections) for DIS and SIA, together with those for inclusive lepton-pair and Higgs-boson production in hadron collisions, facilitate studies of the analytic structure of QCD corrections at and beyond the next-to-next-to-leading order (NNLO) of the renormalization-group improved perturbative expansion [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], an accuracy that is harder to achieve for less inclusive quantities.…”

Section: Introductionmentioning

confidence: 99%

Generalized threshold resummation in inclusive DIS and semi-inclusive electron-positron annihilation

Almasy

Presti

Vogt

2016

J. High Energ. Phys.

View full text Add to dashboard Cite

Abstract:We present analytic all-order results for the highest three threshold logarithms of the space-like and time-like off-diagonal splitting functions and the corresponding coefficient functions for inclusive deep-inelastic scattering (DIS) and semi-inclusive e + e − annihilation. All these results, obtained through an order-by-order analysis of the structure of the corresponding unfactorized quantities in dimensional regularization, can be expressed in terms of the Bernoulli functions introduced by one of us and leading-logarithmic soft-gluon exponentials. The resulting numerical corrections are small for the splitting functions but large for the coefficient functions. In both cases more terms in the threshold expansion need to be determined in order to arrive at quantitatively reliable results.

show abstract

Section: Introductionmentioning

confidence: 99%

Generalized threshold resummation in inclusive DIS and semi-inclusive electron-positron annihilation

Almasy

Presti

Vogt

2016

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

“…The N 3 LO contributions were only recently obtained in Refs. [19,20,22,41,42], while various parts of the N 3 LO calculation have been calculated independently [21,[43][44][45][46][47][48][49][50][51][52][53][54][55][56]. Approximate N 3 LO results were presented in Refs.…”

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

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

“…This correspondence makes it possible to apply methods for loop calculations to the problem, such as integration by parts relations, or more precisely the reduction to master integrals. Details to the IBP reduction are given in [31].…”

Section: An Exact Computation Of the Qq -Channelmentioning

confidence: 99%

“…The integration constants are fixed from direct computations of the master integrals in the limit x → 1. For the computation of these boundary values we refer to [31].…”

Section: An Exact Computation Of the Qq -Channelmentioning

confidence: 99%