On the NLO QCD corrections to gluon-initiated ZH production

Degrassi, Giuseppe; Gröber, Ramona; Vitti, Marco; Zhao, Xiaoran

doi:10.1007/jhep08(2022)009

Cited by 12 publications

(17 citation statements)

References 60 publications

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“…However, the resummation gives significant reduction of the conventional 7-point scale uncertainties to as small as 0.1% in the high invariant mass region Q ≥ 1500 GeV of V H production processes. For the associated Higgs production with a Z boson, the gluon fusion channel and top-loop contributions from NNLO onwards are also important [81][82][83][84][85][86][87] at the accuracy that we considered here. We have included these contributions in our inclusive total production cross-sections for V H processes.…”

Section: Discussionmentioning

confidence: 99%

“…The higher order NLO corrections to this gluon fusion channel which contribute at O(a 3 S ) level appear at the same order as the N 3 LO of DY type corrections, and these NLO corrections to the gluon fusion channel in the effective theory [80] have been computed already. It is worth noting that in the recent past, there has been a significant amount of progress towards the computation of the NLO corrections to this gluon fusion process considering the finite top quark mass effects [81][82][83][84][85][86][87]. The top-loop contributions are available at a 2 S level [79] and are implemented in vh@nnlo 2.1 code.…”

Section: Hmentioning

confidence: 99%

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Threshold enhanced cross sections for colorless productions

Das¹,

Dey²,

Kumar³

et al. 2022

Preprint

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We study the threshold effect for neutral and charged Drell-Yan productions, associated production of Higgs boson with a massive vector boson and Higgs production in bottom quark annihilation at LHC to the third order in QCD. Using the third order soft-virtual results for these processes and exploiting the universality of the threshold logarithms, we extract the process-dependent coefficients for these processes and resum large threshold logarithms to next-to-next-to-next-to leading logarithmic (N 3 LL) accuracy. By matching our results to the recently available N 3 LO results [1], we provide the most precise theoretical predictions for these processes. We present numerical results for invariant mass distribution and total production cross-sections. We find the conventional scale uncertainties of about 0.4% at N 3 LO level in the fixed order results get reduced to as small as less than 0.1% at N 3 LO+N 3 LL level in the high invariant mass region.

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Section: Discussionmentioning

confidence: 99%

Section: Hmentioning

confidence: 99%

Threshold enhanced cross sections for colorless productions

Das¹,

Dey²,

Kumar³

et al. 2022

Preprint

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show abstract

“…A similar approach to the one proposed in this paper has been discussed in Refs. [18,19] where the analytic small p T and high-energy expansions are "merged". For both expansions Padé approximations are constructed, however, only to low order ([1/1] and [6/6], respectively).…”

Section: Introductionmentioning

confidence: 99%

Analytic approximations of $2\to 2$ processes with massive internal particles

Davies¹,

Mishima²,

Schönwald³

et al. 2023

Preprint

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We consider two-loop corrections to 2 → 2 scattering processes with massive particles in the final state and massive particles in the loop. We discuss the combination of analytic expansions in the high-energy limit and for small Mandelstam variable t.For the example of double Higgs boson production we show that the whole phase space can be covered and time-consuming numerical integrations can be avoided.

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“…Results for the virtual corrections are also known in an expansion around small-𝑝 𝑇 (to 𝑝 4 𝑇 ) [17] and have been combined with the high-energy results [18], a NLO result based on this combination was recently presented in Ref. [19].…”

Section: Introductionmentioning

confidence: 99%

ZH Production in Gluon Fusion at NLO

Jones¹

2022

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2022)

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We summarise the calculation of the two-loop next-to-leading order QCD corrections to Z boson plus Higgs boson production in gluon fusion. The result presented includes full top-quark mass effects and is obtained by combining two-loop virtual contributions computed numerically, using sector decomposition, with virtual contributions obtained in a high-energy expansion. We find that the corrections enhance the cross-section by approximately a factor of 2 and reduce the renormalisation and factorisation scale uncertainty by around 30%. For a centre of mass energy of √ 𝑠 = 13.6 TeV we obtain 𝜎 NLO(𝑚 OS 𝑡 ) 𝑔𝑔→𝑍 𝐻 = 114.7(3) +16.2% −13.7% fb.We also observe that the choice of top-quark mass renormalisation scheme can have a significant impact on the prediction.

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On the NLO QCD corrections to gluon-initiated ZH production

Cited by 12 publications

References 60 publications

Threshold enhanced cross sections for colorless productions

Threshold enhanced cross sections for colorless productions

Analytic approximations of $2\to 2$ processes with massive internal particles

ZH Production in Gluon Fusion at NLO

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