Exploring anomalous couplings in Higgs boson pair production through shape analysis

Capozi, Matteo; Heinrich, G.

doi:10.1007/jhep03(2020)091

Cited by 33 publications

(47 citation statements)

References 98 publications

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“…The combination of LHC data and EWPOs is shown as the solid green curve. In single Higgs data, the operators O H□ and O H do not generate any momentum dependence, but O H□ produces momentum-dependent effects in di-Higgs data which could potentially be of use for the discrimination between models [5,37,50].…”

Section: Singlet Modelmentioning

confidence: 99%

Putting standard model EFT fits to work

2020

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The Standard Model effective field theory (SMEFT) provides a consistent framework for comparing precision measurements at the LHC to the Standard Model. The observation of statistically significant nonzero SMEFT coefficients would correspond to physics beyond the Standard Model (BSM) of some sort. A more difficult question to answer is what, if any, detailed information about the nature of the underlying high scale model can be obtained from these measurements. In this work, we consider the patterns of SMEFT operators present in five example models and discuss the assumptions inherent in using global fits to make BSM conclusions. We find that including renormalization group effects has a significant impact on the interpretation of the results. As a by-product of our study, we present an updated global fit to SMEFT coefficients in the Warsaw basis including some next-to-leading order QCD corrections in the SMEFT theory.

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Section: Singlet Modelmentioning

confidence: 99%

Putting standard model EFT fits to work

2020

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“…We also show results for seven benchmark points, which have been identified by an m hh shape analysis presented in ref. [33], based on the full NLO calculation, and compare NLO effects to effects from anomalous couplings. Further, we show results matched to the PYTHIA-8 [34] and HERWIG-7.2 [35] parton showers to enable the assessment of parton-shower related uncertainties.…”

Section: Jhep10(2020)021mentioning

confidence: 99%

A non-linear EFT description of gg → H H at NLO interfaced to POWHEG

Heinrich

Jones

Kerner

et al. 2020

J. High Energ. Phys.

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We present the implementation of Higgs boson pair production in gluon fusion within a non-linear Effective Field Theory framework containing five anomalous couplings for this process. The code, available within the POWHEG-BOX-V2, includes full NLO QCD corrections with massive top quarks. All five couplings can be modified by the user. We show mhh distributions at seven benchmark points provided by an mhh shape analysis at NLO and showered $$ {p}_T^{hh} $$ p T hh distributions resulting from an interface to PYTHIA-8 and HERWIG-7.2.

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“…Effects of anomalous couplings within the Electroweak Chiral PoS(RADCOR2019)020 Lagrangian framework have been studied in in Refs. [32,33].…”

Section: Pos(radcor2019)020mentioning

confidence: 99%