Probing the Higgs boson-gluon coupling via the jet energy profile at 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>e</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>e</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>
 colliders

Li, Gexing; Zhao, Li; Liu, Yandong; Wang, Yan; Zhao, Xiaoran

doi:10.1103/physrevd.98.076010

Cited by 6 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…More details of the analysis can be found in Ref. [29]. The reference also shows that the c tagging cannot decrease the κ g uncertainty effectively since its mistag rate for the gluon jet will exclude some gluon jets.…”

Section: Pre-processingmentioning

confidence: 99%

“…For example, jet energy profile is one of the useful jet substructure observables to distinguish quark and gluon jets by the energy distribution of jet constituents. By using the jet energy profile the uncertainty of the Higgs boson-gluon coupling further can be reduced to about 1.6% for the channel of a Z boson decaying to a lepton pair [29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Improving the measurement of the Higgs boson-gluon coupling using convolutional neural networks at e+e− colliders

Zhao

Wang

et al. 2019

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

In this paper we propose to use Convolutional Neural Networks (CNN) to improve the precision measurement of Higgs boson-gluon effective coupling at lepton colliders. The CNN is employed to recognize the Higgs boson and a Z boson associated production process, with the Higgs boson decaying to a gluon pair and the Z boson decaying to a lepton pair at the center-of-mass energy 250 GeV and integrated luminosity 5 ab −1 . By using CNN the uncertainty of effective coupling measurement can be decreased from 1.94% to about 1.28% using the PYTHIA data and from 1.82% to about 1.22% using the HERWIG data in the MC simulation. Moreover, the performance of CNN using different final state constituents shows that the leading and subleading jets play a major role on the identification and the optimal uncertainty of effective coupling using CNN is reduced by about 35% compared to that using conventional method.

show abstract

Section: Pre-processingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improving the measurement of the Higgs boson-gluon coupling using convolutional neural networks at e+e− colliders

Zhao

Wang

et al. 2019

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

show abstract

“…The fully differential cross sections for H → bb have been calculated to next-to-next-to-leading order (NNLO) in [26,27] and N 3 LO in [28] for massless bottom quarks, and to NNLO in [29][30][31][32] with massive bottom quarks. There have been recent predictions for the hadronic event shapes in the decay of the Higgs boson at next-to-leading order (NLO) [33][34][35] and approximated NNLO [36]. There also exist a NNLO calculation for the Higgs boson decaying into a pair of bottom quarks plus an additional jet for massless bottom quarks [37].…”

Section: Introductionmentioning

confidence: 99%

Hadronic decays of Higgs boson at NNLO matched with parton shower

Sun

Shen

et al. 2021

J. High Energ. Phys.

View full text Add to dashboard Cite

We present predictions for hadronic decays of the Higgs boson at next-to-next-to-leading order (NNLO) in QCD matched with parton shower based on the POWHEG framework. Those include decays into bottom quarks with full bottom-quark mass dependence, light quarks, and gluons in the heavy top quark effective theory. Our calculations describe exclusive decays of the Higgs boson with leading logarithmic accuracy in the Sudakov region and next-to-leading order (NLO) accuracy matched with parton shower in the three-jet region, with normalizations fixed to the partial width at NNLO. We estimated remaining perturbative uncertainties taking typical event shape variables as an example and demonstrated the need of future improvements on both parton shower and matrix element calculations. The calculations can be used immediately in evaluations of the physics performances of detector designs for future Higgs factories.

show abstract

“…On the theory side, the Higgs boson decays into four massless quarks via electroweak gauge bosons have been calculated to NLO in both QCD and electroweak couplings and have been implemented in the MC program Prophecy4f [38,39]. There have also been recent predictions for Higgs boson decays into three-jets final state [40][41][42] for the hadronic event shapes. That is particularly interested for the probe of light-quark Yukawa interactions [43].…”

Section: Introductionmentioning

confidence: 99%

Higgs boson decay into four bottom quarks in the SM and beyond

Gao

2019

J. High Energ. Phys.

View full text Add to dashboard Cite

We present predictions for the Higgs boson decay into four bottom quarks in the standard model and via light exotic scalars retaining full bottom-quark mass dependence. In the SM the decay can be induced either by the Yukawa couplings of bottom quarks and top quarks or the electroweak couplings. We calculate the partial decay width and various differential distributions up to next-to-leading order in QCD. We find large QCD corrections for decay via Yukawa couplings, as large as 90% for the partial decay width, and reduced scale variations. The results of this paper are therefore helpful for the measurement of this multi-jets final state at future Higgs factory of electron-positron colliders. We also propose several observables that can differentiate the SM decay channel and the exotic decay channel and compare their next-to-leading order predictions.

show abstract

Probing the Higgs boson-gluon coupling via the jet energy profile at e+e− colliders

Cited by 6 publications

References 22 publications

Improving the measurement of the Higgs boson-gluon coupling using convolutional neural networks at e+e− colliders

Improving the measurement of the Higgs boson-gluon coupling using convolutional neural networks at e+e− colliders

Hadronic decays of Higgs boson at NNLO matched with parton shower

Higgs boson decay into four bottom quarks in the SM and beyond

Contact Info

Product

Resources

About