Measuring the Higgs self-coupling via Higgs-pair production at a 100 TeV p–p collider

Mangano, M.; Ortona, G.; Selvaggi, M.

doi:10.1140/epjc/s10052-020-08595-3

Cited by 41 publications

(33 citation statements)

References 94 publications

(103 reference statements)

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“…The trilinear coupling measurement, which is difficult to achieve at the LHC [38] at a satisfactory level of accuracy, is a standard reference target for future colliders. A 100 TeV hadron collider is expected to be able to measure modifications in the trilinear coupling δκ FCC 3 ≈ 3.5% -8%, depending on the assumptions on detector performance [39]. At lepton colliders, high energies are needed to produce a significant amount of Higgs boson pairs in VBF.…”

Section: Jhep05(2021)219mentioning

confidence: 99%

Two paths towards precision at a very high energy lepton collider

Buttazzo

Franceschini

Wulzer

2021

J. High Energ. Phys.

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We illustrate the potential of a very high energy lepton collider (from 10 to 30 TeV center of mass energy) to explore new physics indirectly in the vector boson fusion double Higgs production process and in direct diboson production at high energy. Double Higgs production is found to be sensitive to the anomalous Higgs trilinear coupling at the percent level, and to the Higgs compositeness ξ parameter at the per mille or sub-per mille level thanks to the measurement of the cross-section in the di-Higgs high invariant mass tail. High energy diboson (and tri-boson) production is sensitive to Higgs-lepton contact interaction operators at a scale of several tens or hundred TeV, corresponding to a reach on the Higgs compositeness scale well above the one of any other future collider project currently under discussion. This result follows from the unique capability of the very high energy lepton collider to measure Electroweak cross-sections at 10 TeV energy or more, where the effect of new physics at even higher energy is amplified. The general lesson is that the standard path towards precision physics, based on measurements of high-statistics processes such as single and double Higgs production, is accompanied at the very high energy lepton collider by a second strategy based on measurements at the highest available energy.

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Section: Jhep05(2021)219mentioning

confidence: 99%

Two paths towards precision at a very high energy lepton collider

Buttazzo

Franceschini

Wulzer

2021

J. High Energ. Phys.

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“…The precision on the Higgs self-coupling comprises the value extracted from the ZH and WW → H cross sections for FCC-ee, with two (top line) or four (lower line) interaction points. The precision for FCC-hh has been updated using the most recent projections from double-Higgs production at FCC-hh [38] uses in turn the FCC-ee measurement of the top electroweak couplings with e + e − → tt production. Thus not only does FCC-ee provide new model-independent measurements, it also renders more precise and model-independent those of the past and future hadron colliders.…”

Section: Opportunities: Higgs Boson Propertiesmentioning

confidence: 99%

“…[39][40][41][42], the capability of FCC-ee to measure the ZH and WW → H cross sections at two different centre-of-mass energies (240 and 365 GeV) offers a 2-to-4 σ sensitivity to the Higgs self-coupling, via a loop diagram. The FCC-ee Higgs and top coupling measurements make it possible to measure the Higgs self coupling at the 100 TeV collider, with a precision around ± 10% within a couple years running and eventually of (3 stat ± 1.6 syst )% [38]. For the Higgs measurements as for many other aspects of the physics program, the combination of FCC-ee and FCC-hh is outstanding [36].…”

Section: Opportunities: Higgs Boson Propertiesmentioning

confidence: 99%

FCC-ee overview: new opportunities create new challenges

Blondel

Janot

2022

Eur. Phys. J. Plus

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With its high luminosity, its clean experimental conditions, and a range of energies that cover the four heaviest particles known today, FCC-ee offers a wealth of physics possibilities, with high potential for discoveries. The FCC-ee is an essential and complementary step towards a 100 TeV hadron collider, and as such offers a uniquely powerful combined physics program. This vision is the backbone of the 2020 European Strategy for Particle Physics. One of the main challenges is now to design experimental systems that can, demonstrably, fully exploit these extraordinary opportunities.

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“…Even though all three collider configurations expect to see pile-up effects in the range of several hundreds, we did not consider any pile-up effects since in this study we aim at giving an estimation to obtain the limits of effective Higgs couplings by post-LHC circular high-energy hadron collider options through the production of three photons [47]. We filtered events with at least three photons in the final state and jet veto to suppress jet-containing backgrounds for the analysis as a first step (Cut-1).…”

Section: Signal and Background Analysismentioning

confidence: 99%

Sensitivity Reach on Anomalous Higgs Couplings via Triphoton Production for the Post-LHC Circular High-energy Hadron Colliders

Denizli

Şenol

2021

Acta Phys. Pol. B

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The potential of triphoton production to obtain limits on anomalous Higgs boson couplings at Hγγ and HZγ vertices is studied in the Standard Model Effective Field Theory (EFT) framework for the post-LHC circular high-energy hadron colliders: High Luminosity-LHC (HL-LHC), High-Energy LHC (HE-LHC), and Low-Energy FCC (LE-FCC) which are designed with standard configurations of 14 TeV/3 ab −1 , 27 TeV/15 ab −1 , and 37.5 TeV/15 ab −1 . Madgraph in which the effective Lagrangian of the SM EFT is implemented using FeynRules and UFO framework is used to generate both background and signal events. These events are then passed through PYTHIA 8 for parton showering and Delphes to include realistic detector effects. After optimizing cuts on kinematics of three photons as well as the reconstructed invariant mass of the two leading photons, invariant mass of three leading photons is used to obtain constraints on the Wilson coefficients of dimension-six operators. We report on the result of a twodimensional scan of cγ and cγ couplings at 95% confidence level and compare with the LHC results. Our obtained limits without systematic error on cγ ( cγ ) are [−3.15; 1.41] × 10 −2 ([−2.12; 2.12] × 10 −2 ), [−1.21; 0.78] × 10 −2 ([−0.98; 0.98] × 10 −2 ), and [−0.89; 0.66] × 10 −2 ([−0.77; 0.77] × 10 −2 ) for HL-LHC, HE-LHC, and LE-FCC, respectively.

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Measuring the Higgs self-coupling via Higgs-pair production at a 100 TeV p–p collider

Cited by 41 publications

References 94 publications

Two paths towards precision at a very high energy lepton collider

Two paths towards precision at a very high energy lepton collider

FCC-ee overview: new opportunities create new challenges

Sensitivity Reach on Anomalous Higgs Couplings via Triphoton Production for the Post-LHC Circular High-energy Hadron Colliders

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