arxiv: 2604.24152 · v1 · submitted 2026-04-27 · ✦ hep-ph · hep-ex

Recognition: unknown

Probing the electron Yukawa coupling via resonant Higgs boson production at FCC-ee via e^+e^- to H to WW^* in lepton-plus-jets final states

Apranik Fatehi , Reza Jafari Seyedabad , Amir Amiri , Kazem Azizi , David d'Enterria , Louis Portales , Michele Selvaggi

Authors on Pith no claims yet

Pith reviewed 2026-05-08 03:10 UTC · model grok-4.3

classification ✦ hep-ph hep-ex

keywords electron Yukawa couplingHiggs bosonFCC-eeresonant productionWW* decaysgradient boosted decision treecoupling modifierlepton-plus-jets

0 comments

The pith

Detailed simulations show that resonant Higgs production at FCC-ee can reach 2 sigma significance, limiting the electron Yukawa coupling modifier to 1.35 times the standard model value.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper simulates electron-positron collisions tuned to exactly 125 GeV to produce Higgs bosons directly through the s-channel, a process whose rate depends directly on the electron's Yukawa coupling to the Higgs. Signal events are sought in the decay chain where the Higgs goes to a pair of W bosons, with one W decaying to a lepton and neutrino and the other to two jets, considering four combinations of these final states. A multiclass machine learning classifier separates the rare signal from dominant backgrounds using kinematic and topological features. Under the stated beam and luminosity assumptions, the combined analysis reaches 2.0 standard deviations of significance. This sensitivity yields the strongest simulated upper limit to date on how much the electron-Higgs coupling can exceed its standard model expectation.

Core claim

The analysis of s-channel Higgs production in e+e- collisions at 125 GeV, followed by H to WW* decays in lepton-plus-jets final states, employs a multiclass gradient boosted decision tree across four categories to discriminate signal from background. With a monochromatized center-of-mass energy spread of 4.1 MeV that produces a resonant cross section of 280 ab and an integrated luminosity of 10 ab inverse, the study achieves a combined statistical significance of 2.0 standard deviations, corresponding to an upper limit on the coupling modifier kappa_e = y_e / y_e^SM of 1.35 at 95 percent confidence level and the most stringent constraint on the electron Yukawa coupling from any simulation to

What carries the argument

The multiclass gradient boosted decision tree that classifies events into signal and background categories using kinematic and topological variables from the four lepton-plus-jets WW* final states.

If this is right

The analysis establishes the most stringent constraint on the electron Yukawa coupling achieved in any simulation-based study to date.
An observed excess would enable a direct extraction of the electron-Higgs coupling strength rather than indirect inferences from other measurements.
The resulting upper limit of 1.35 on kappa_e would restrict the size of possible new physics effects that enhance the electron coupling.
The approach demonstrates a viable experimental pathway for probing the electron Yukawa coupling at a future circular electron-positron collider.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

Realistic deviations from the assumed 4.1 MeV energy spread could be mitigated by tighter event selection or additional data categories.
Combining this lepton-plus-jets channel with other Higgs decay modes at the same collider would likely increase the overall significance beyond 2 sigma.
The limit would directly test beyond-standard-model scenarios that modify lepton couplings while leaving gauge boson couplings unchanged.
Higher integrated luminosity at FCC-ee would scale the sensitivity linearly and further tighten the bound on any enhancement of the electron Yukawa coupling.

Load-bearing premise

The projection assumes a monochromatized beam with 4.1 MeV center-of-mass energy spread that yields a resonant cross section of 280 ab at 10 ab inverse integrated luminosity.

What would settle it

If the actual center-of-mass energy spread exceeds 4.1 MeV or if the number of events passing the BDT selection after background subtraction shows no excess consistent with kappa_e near 1, the projected 2.0 sigma significance and 1.35 limit would not be achieved.

read the original abstract

We report a detailed simulation study of the search for $s$-channel Higgs boson production in $e^+e^-$ collisions at a center-of-mass (c.m.) energy of $\sqrt{s}=125\,\mathrm{GeV}$ at the CERN Future Circular Collider (FCC-ee), as a means to constrain the electron Yukawa coupling, $y_e$. The process of interest is $e^+e^-\to H\to WW^*\to \ell^\pm\nu + jj$ with four different $WW^*$ final states considered, involving both on- and off-shell $W$ bosons decaying either into dileptons ($\ell^\pm = e^\pm$ and $\mu^\pm$, including those from $\tau^\pm$ decays) or into dijets ($jj$). Signal and background events are discriminated through a multiclass gradient boosted decision tree exploiting a comprehensive set of kinematic and topological variables across the four final-state categories. Assuming a monochromatized c.m. energy spread of 4.1 MeV, yielding a $\sigma_{e^+e^-\to H} = 280\,\mathrm{ab}$ resonant cross section, and an integrated luminosity of $10\,\mathrm{ab}^{-1}$, the analysis achieves a combined statistical significance of 2.0 standard deviations. This corresponds to an upper limit on the coupling modifier $\kappa_e = y_e/y_e^{\rm SM} \lesssim 1.35$ at 95\% confidence level, and provides the most stringent constraint on the electron Yukawa coupling achieved in simulation-based studies to date.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Desk Editor's Note private letter to a colleague

This simulation projects a 2-sigma reach on the electron Yukawa at FCC-ee in the resonant WW* channel, but the result is sensitive to the assumed beam energy spread.

read the letter

Your colleague should know that the paper is a forward simulation of Higgs production at FCC-ee to set limits on the electron Yukawa coupling. Using the process e+e- to H to WW* in lepton plus jets, they combine four categories with a multiclass BDT and get 2 sigma significance under their baseline assumptions, translating to kappa_e below 1.35 at 95% CL. What stands out is the detailed breakdown of the final states, including both on-shell and off-shell W decays, and the use of a comprehensive set of kinematic and topological variables for discrimination. That level of categorization helps optimize the analysis for this low-rate process. The main soft spot is how much the projected significance depends on the monochromatized energy spread of 4.1 MeV, which sets the resonant cross section at 280 ab, and the 10 ab inverse luminosity. The abstract presents these as fixed inputs without a scan or uncertainty band. A larger spread would reduce the peak cross section and weaken the limit noticeably. Background modeling details are not fully visible in the summary, so it's hard to judge if the BDT performance holds up there. This paper is aimed at the FCC-ee community and theorists interested in testing the Higgs mechanism for the electron. It provides a specific number for one production mode that can be compared to other channels like associated production. I think it deserves a serious referee. The work is grounded in standard tools and makes a clear projection, even if the assumptions need discussion in review.

Referee Report

2 major / 0 minor

Summary. The manuscript presents a Monte Carlo simulation study of s-channel resonant Higgs production at FCC-ee (√s=125 GeV) to constrain the electron Yukawa coupling via e⁺e⁻ → H → WW* → ℓ±ν + jj in four lepton-plus-jets categories. Signal-background separation employs a multiclass gradient boosted decision tree using kinematic and topological variables. Under the assumptions of a 4.1 MeV monochromatized beam energy spread (yielding σ_{e⁺e⁻→H}=280 ab) and 10 ab⁻¹ integrated luminosity, the analysis reports a combined 2.0σ statistical significance, corresponding to an upper limit κ_e ≲ 1.35 at 95% CL, claimed as the most stringent simulation-based result to date.

Significance. If the collider parameters are realized, the work offers a useful phenomenological projection for FCC-ee reach on y_e, with credit for the multiclass BDT exploiting a broad variable set across multiple WW* final states and the focus on a clean lepton-plus-jets signature. The result remains a forward simulation rather than a measurement, with modest significance (2σ) that is directly tied to external inputs.

major comments (2)

[Abstract] Abstract: The quoted 2.0σ combined significance and the 95% CL limit κ_e ≤ 1.35 rest entirely on the externally assumed 4.1 MeV c.m. energy spread (producing the 280 ab resonant cross section) and 10 ab⁻¹ luminosity. No sensitivity study, variation scan, or uncertainty propagation on these load-bearing parameters is reported; a larger actual spread would reduce the peak cross section and drop the significance below 2σ, directly weakening the derived limit.
[Analysis and results] Analysis and results sections: Background modeling details, systematic uncertainties on the BDT discriminant, and validation (e.g., training/validation separation, overtraining metrics) are not described at a level that fully substantiates the quoted significance, leaving the support for the numerical claims moderate.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the constructive comments on our manuscript. We have carefully considered the points raised and provide point-by-point responses below, along with revisions to the manuscript where appropriate.

read point-by-point responses

Referee: [Abstract] Abstract: The quoted 2.0σ combined significance and the 95% CL limit κ_e ≤ 1.35 rest entirely on the externally assumed 4.1 MeV c.m. energy spread (producing the 280 ab resonant cross section) and 10 ab⁻¹ luminosity. No sensitivity study, variation scan, or uncertainty propagation on these load-bearing parameters is reported; a larger actual spread would reduce the peak cross section and drop the significance below 2σ, directly weakening the derived limit.

Authors: We agree with the referee that the projected significance and limit are dependent on the assumed beam energy spread and integrated luminosity. These values are taken from the FCC-ee design studies. To address this, we have added a new subsection in the results section performing a sensitivity analysis by varying the c.m. energy spread by ±1 MeV and ±2 MeV around 4.1 MeV, and also considering luminosity variations. We show the scaling of the significance and the resulting κ_e limit. This provides a clearer picture of the dependence on these parameters. revision: yes
Referee: [Analysis and results] Analysis and results sections: Background modeling details, systematic uncertainties on the BDT discriminant, and validation (e.g., training/validation separation, overtraining metrics) are not described at a level that fully substantiates the quoted significance, leaving the support for the numerical claims moderate.

Authors: We appreciate this feedback and acknowledge that more detailed information on these aspects would strengthen the paper. In the revised version, we have expanded the description of the background processes, including how they are generated and normalized. We have also added a dedicated paragraph on the BDT training procedure, including the split between training and validation samples (70/30), the use of k-fold cross-validation to assess overtraining, and metrics such as the Kolmogorov-Smirnov test for distribution agreement between training and test sets. Additionally, we discuss the systematic uncertainties assigned to the BDT discriminant, primarily from jet energy scale and lepton identification efficiencies, and how they are propagated to the final significance and limit. revision: yes

Circularity Check

0 steps flagged

No circularity; projection uses external assumptions without self-referential reduction

full rationale

The paper conducts a forward simulation study projecting the sensitivity of resonant Higgs production at FCC-ee to the electron Yukawa coupling. The claimed 2.0 sigma significance and kappa_e upper limit are obtained by scaling an externally assumed resonant cross section (280 ab from 4.1 MeV beam spread) and luminosity (10 ab^{-1}) through standard BDT classification on kinematic variables in four WW* categories. No equation or step defines a derived quantity in terms of itself, renames a fitted parameter as a prediction, or relies on a load-bearing self-citation whose validity reduces to the present work. The derivation chain remains independent of the target result and is self-contained as a conditional projection under stated collider parameters.

Axiom & Free-Parameter Ledger

2 free parameters · 1 axioms · 0 invented entities

The projection rests on externally supplied collider performance numbers and Standard Model branching ratios rather than new parameters fitted inside the paper.

free parameters (2)

center-of-mass energy spread
Assumed monochromatized value of 4.1 MeV that sets the resonant cross section to 280 ab.
integrated luminosity
Assumed value of 10 ab inverse used to scale the expected event yields.

axioms (1)

domain assumption Standard Model values for Higgs production cross section and WW* branching ratios
Signal modeling relies on these SM inputs without independent verification in the study.

pith-pipeline@v0.9.0 · 5629 in / 1356 out tokens · 27301 ms · 2026-05-08T03:10:19.940673+00:00 · methodology

discussion (0)

Reference graph

Works this paper leans on

64 extracted references · 56 canonical work pages · 4 internal anchors

[1]

Higgs,Broken symmetries, massless particles and gauge fields,Phys

P.W. Higgs,Broken symmetries, massless particles and gauge fields,Phys. Lett.12(1964) 132

1964
[2]

Higgs,Broken symmetry and the masses of gauge bosons,Phys

P.W. Higgs,Broken symmetry and the masses of gauge bosons,Phys. Rev. Lett.13(1964) 508

1964
[3]

Englert and R

F. Englert and R. Brout,Broken symmetry and the mass of gauge vector mesons,Phys. Rev. Lett.13(1964) 321

1964
[4]

Guralnik, C.R

G.S. Guralnik, C.R. Hagen and T.W.B. Kibble,Global Conservation Laws and Massless Particles,Phys. Rev. Lett.13(1964) 585

1964
[5]

d’Enterria, A

D. d’Enterria, A. Poldaru and G. Wojcik,Measuring the electron Yukawa coupling via resonant s-channel Higgs production at FCC-ee,Eur. Phys. J. Plus137(2022) 201 [2107.02686]. – 25 –

work page arXiv 2022
[6]

Dittmaier and M

S. Dittmaier and M. Schumacher,The Higgs Boson in the Standard Model - From LEP to LHC: Expectations, Searches, and Discovery of a Candidate,Prog. Part. Nucl. Phys.70 (2013) 1 [1211.4828]

work page arXiv 2013
[7]

S.D. Bass, A. De Roeck and M. Kado,The Higgs boson implications and prospects for future discoveries,Nature Rev. Phys.3(2021) 608 [2104.06821]. [10]CMScollaboration,A portrait of the Higgs boson by the CMS experiment ten years after the discovery.,Nature607(2022) 60 [2207.00043]. [11]ATLAScollaboration,A detailed map of Higgs boson interactions by the ATL...

work page arXiv 2021
[8]

Higgs Physics at the HL-LHC and HE-LHC

M. Cepeda et al.,Report from Working Group 2: Higgs Physics at the HL-LHC and HE-LHC,CERN Yellow Rep. Monogr.7(2019) 221 [1902.00134]. [13]ATLAS, CMScollaboration,Highlights of the HL-LHC physics projections by ATLAS and CMS,2504.00672. [14]CMScollaboration,Search for a standard model-like Higgs boson in theµ +µ− ande +e− decay channels at the LHC,Phys. L...

work page Pith review arXiv 2019
[9]

Altmann et al.,ECFA Higgs, electroweak, and top Factory Study, vol

J. Altmann et al.,ECFA Higgs, electroweak, and top Factory Study, vol. 5/2025 ofCERN Yellow Reports: Monographs(6, 2025), 10.23731/CYRM-2025-005, [2506.15390]

work page doi:10.23731/cyrm-2025-005 2025
[10]

de Blas et al.,Physics Briefing Book: Input for the 2026 update of the European Strategy for Particle Physics,arXiv:2511.03883

J. de Blas et al.,Physics Briefing Book: Input for the 2026 update of the European Strategy for Particle Physics,2511.03883. [18]FCCcollaboration,FCC Physics Opportunities: Future Circular Collider Conceptual Design Report Volume 1,Eur. Phys. J. C79(2019) 474. [19]FCCcollaboration,FCC-ee: The Lepton Collider: Future Circular Collider Conceptual Design Rep...

work page arXiv 2026
[11]

Blondel and P

A. Blondel and P. Janot,Future strategies for the discovery and the precise measurement of the Higgs self coupling,1809.10041

work page arXiv
[12]

Alipour Tehrani et al.,FCC-ee: Your Questions Answered, inCERN Council Open Symposium on the Update of European Strategy for Particle Physics, A

N. Alipour Tehrani et al.,FCC-ee: Your Questions Answered, inCERN Council Open Symposium on the Update of European Strategy for Particle Physics, A. Blondel and P. Janot, eds., 6, 2019 [1906.02693]

work page arXiv 2019
[13]

P. Azzi, L. Gouskos, M. Selvaggi and F. Simon,Higgs and top physics reconstruction challenges and opportunities at FCC-ee,Eur. Phys. J. Plus137(2022) 39 [2107.05003]. – 26 –

work page arXiv 2022
[14]

Azzurri, G

P. Azzurri, G. Bernardi, S. Braibant, D. d’Enterria, J. Eysermans, P. Janot et al.,A special Higgs challenge: measuring the mass and production cross section with ultimate precision at FCC-ee,Eur. Phys. J. Plus137(2022) 23 [2106.15438]

work page arXiv 2022
[15]

Precision Measurements of Higgs Hadronic Decay Modes at the FCC-ee

A. Del Vecchio, J. Eysermans, L. Gouskos, G. Iakovidis, A. Maloizel, G. Marchiori et al., Precision Measurements of Higgs Hadronic Decay Modes at the FCC-ee,2511.23149

work page internal anchor Pith review Pith/arXiv arXiv
[16]

Kahraman and O

I. Kahraman and O. Çakır,Measurement of the mass of Higgs boson through HZ production at FCC-ee,2507.15533

work page arXiv
[17]

Maura, B.A

V. Maura, B.A. Stefanek and T. You,The Higgs Self-Coupling at FCC-ee,Phys. Rev. Lett. 135(2025) 141802 [2503.13719]

work page arXiv 2025
[18]

Mehta, N

A. Mehta, N. Rompotis and S. Randles, “Higgs to invisible at the fcc-ee.” FCC Physics and Experiments Note, v3, 2025. 10.17181/9b128-qqc43

work page doi:10.17181/9b128-qqc43 2025
[19]

K. Kemp, A. Desai and P. Jackson,Measurements ofH→W +W − in the Fully Leptonic Decay Mode at the FCC-ee,2601.21327

work page arXiv
[20]

Projections of H$\to\tau\tau$ cross-section at FCC-ee

S. Giappichini, M. Klute, M. Presilla, X. Zuo and M. Cepeda,Measurements of H→τ τ cross-section at FCC-ee,2601.11383

work page internal anchor Pith review Pith/arXiv arXiv
[21]

Kamenik, A

J.F. Kamenik, A. Korajac, M. Szewc, M. Tammaro and J. Zupan,Flavor-violating Higgs and Z boson decays at a future circular lepton collider,Phys. Rev. D109(2024) L011301 [2306.17520]

work page arXiv 2024
[22]

Ripellino, M

G. Ripellino, M. Vande Voorde, A. Gallén and R. Gonzalez Suarez,Searching for long-lived dark scalars at the FCC-ee,JHEP06(2025) 143 [2412.10141]

work page arXiv 2025
[23]

Cazzaniga, A

C. Cazzaniga, A. de Cosa, F. Kahlhoefer, A.S. Maria, R. Seidita and E. Sitti,Probing the Higgs Portal to a Strongly-Interacting Dark Sector at the FCC-ee,2510.17675

work page arXiv
[24]

Arroyo-Ureña, D

M.A. Arroyo-Ureña, D. Carreño, A.I. García-Gutierrez, M.G. Villanueva-Utrilla and T.A. Valencia-Pérez,Beyond the SM Higgs physics: Huntingh→bswith Higgs-strahlung at CEPC and FCC-ee,2507.01141

work page arXiv
[25]

ter Hoeve, L

J. ter Hoeve, L. Mantani, J. Rojo, A.N. Rossia and E. Vryonidou,Higgs trilinear coupling in the standard model effective field theory at the high luminosity LHC and the FCC-ee,Phys. Rev. D112(2025) 013008 [2504.05974]

work page arXiv 2025
[26]

Bhattacherjee, C

B. Bhattacherjee, C. Bose, H.K. Dreiner, N. Ghosh, S. Matsumoto and R. Sengupta, Long-lived Light Mediators in a Higgs Portal Model at the FCC-ee,2503.08780

work page arXiv
[27]

Search for the production of dark Higgs in the framework of Mono-Z$^{\prime}$ portal at the FCC-ee simulated electron-positron collisions at $\sqrt{s} = 240$ GeV

S. Elgammal and N. De Filippis,Search for the production of dark Higgs in the framework of Mono-Z′ portal at the FCC-ee simulated electron-positron collisions at√s= 240GeV, 2602.03235

work page internal anchor Pith review Pith/arXiv arXiv
[28]

Search for resonants-channel Higgs production at the FCC-ee

D. d’Enterria, “Search for resonants-channel Higgs production at the FCC-ee.” FCC-ee/TLEP physics workshop (TLEP7), CERN, https://indico.cern.ch/event/313708/contributions/1687826/, 19–21 June 2014

work page arXiv 2014
[29]

d’Enterria,Higgs physics at the Future Circular Collider,PoSICHEP2016(2017) 434 [1701.02663]

D. d’Enterria,Higgs physics at the Future Circular Collider,PoSICHEP2016(2017) 434 [1701.02663]

work page arXiv 2017
[30]

Jadach and R.A

S. Jadach and R.A. Kycia,Lineshape of the Higgs boson in future lepton colliders,Phys. Lett. B755(2016) 58 [1509.02406]

work page arXiv 2016
[31]

Greco, T

M. Greco, T. Han and Z. Liu,ISR effects for resonant Higgs production at future lepton colliders,Phys. Lett. B763(2016) 409 [1607.03210]. – 27 –

work page arXiv 2016
[32]

Altmannshofer, J

W. Altmannshofer, J. Brod and M. Schmaltz,Experimental constraints on the coupling of the Higgs boson to electrons,JHEP05(2015) 125 [1503.04830]

work page arXiv 2015
[33]

A. Dery, C. Frugiuele and Y. Nir,Large Higgs-electron Yukawa coupling in 2HDM,JHEP04 (2018) 044 [1712.04514]

work page arXiv 2018
[34]

M.I. Ali, M. Chakraborti, U. Chattopadhyay and S. Mukherjee,Muon and electron(g−2) anomalies with non-holomorphic interactions in MSSM,Eur. Phys. J. C83(2023) 60 [2112.09867]

work page arXiv 2023
[35]

Solomon, G

R. Solomon, G. Agarwal and D. Stojkovic,Environment dependent electron mass and the Hubble constant tension,Phys. Rev. D105(2022) 103536 [2201.03127]

work page arXiv 2022
[36]

H. Bahl, E. Fuchs, S. Heinemeyer, J. Katzy, M. Menen, K. Peters et al.,Constraining theCP structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis,Eur. Phys. J. C82(2022) 604 [2202.11753]

work page arXiv 2022
[37]

Chang and S.-H

W.-F. Chang and S.-H. Kuo,Possibly heteroclite electron Yukawa coupling and small△aµ in a hidden Abelian gauge model for neutrino masses,2206.14394

work page arXiv
[38]

Chang,Non-universal gauged lepton number for charged lepton masses hierarchy and (g−2) e,µ,2210.11097

W.-F. Chang,Non-universal gauged lepton number for charged lepton masses hierarchy and (g−2) e,µ,2210.11097

work page arXiv
[39]

Davoudiasl and P.P

H. Davoudiasl and P.P. Giardino,Electrong−2foreshadowing discoveries at FCC-ee,Phys. Rev. D109(2024) 075037 [2311.12112]

work page arXiv 2024
[40]

Idegawa and E

C. Idegawa and E. Senaha,Electron electric dipole moment and electroweak baryogenesis in a complex singlet extension of the Standard Model with degenerate scalars,Phys. Lett. B848 (2024) 138332 [2309.09430]

work page arXiv 2024
[41]

Altmannshofer, P

W. Altmannshofer, P. Munbodh and T. Oh,Probing lepton flavor violation at Circular Electron-Positron Colliders,JHEP08(2023) 026 [2305.03869]

work page arXiv 2023
[42]

Allwicher, M

L. Allwicher, M. McCullough, S. Renner, D. Rocha and B. Smith,The Price of a Large Electron Yukawa Modification,2511.02642

work page arXiv
[43]

Erdelyi, R

B.A. Erdelyi, R. Gröber and N. Selimovic,Probing new physics with the electron Yukawa coupling,JHEP05(2025) 135 [2501.07628]

work page arXiv 2025
[44]

Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector

D. de Florian et al.,Handbook of LHC Higgs Cross Sections: 4. Deciphering the Nature of the Higgs Sector,1610.07922

work page Pith review arXiv
[45]

Zimmermann and M

F. Zimmermann and M. Valdivia García,Optimized monochromatization for direct Higgs production in future circulare+e− colliders, in8th Intl. Particle Accel. Conf., 10.18429/JACoW-IPAC2017-WEPIK015, 2017

work page doi:10.18429/jacow-ipac2017-wepik015 2017
[46]

Valdivia García and F

M. Valdivia García and F. Zimmermann,Effect of emittance constraints on monochromatization at the Future Circulare+e− Collider, in10th Intl. Particle Accel. Conf., 10.18429/JACoW-IPAC2019-MOPMP035, 6, 2019; and private comm

work page doi:10.18429/jacow-ipac2019-mopmp035 2019
[47]

Zhang et al.,Monochromatization interaction region optics design for direct s-channel Higgs production at FCC-ee,Nucl

Z. Zhang et al.,Monochromatization interaction region optics design for direct s-channel Higgs production at FCC-ee,Nucl. Instrum. Meth. A1073(2025) 170268 [2411.04210]

work page arXiv 2025
[48]

Monochromatization interaction region optics design for direct s-channel Higgs production at FCC-ee

D. Shatilov,Comment on “Monochromatization interaction region optics design for direct s-channel Higgs production at FCC-ee”,Nucl. Instrum. Meth. A1086(2026) 171316 [2512.03997]

work page arXiv 2026
[49]

Boughezal, F

R. Boughezal, F. Petriello and K. Şimşek,Transverse spin asymmetries and the electron Yukawa coupling at an FCC-ee,Phys. Rev. D110(2024) 075026 [2407.12975]. – 28 –

work page arXiv 2024
[50]

Dam,Detector requirements, design, and technologies for the FCC-ee Higgs, electroweak, and top factory,Nucl

M. Dam,Detector requirements, design, and technologies for the FCC-ee Higgs, electroweak, and top factory,Nucl. Instrum. Meth. A1080(2025) 170648 [2505.06781]. [63]IDEA Study Groupcollaboration, M. Abbrescia et al.,The IDEA detector concept for FCC-ee, February, 2025

work page arXiv 2025
[51]

Fcc-ee idea detector card for delphes

E. Fontanesi, L. Pezzotti, M. Antonello and M. Selvaggi, “Fcc-ee idea detector card for delphes.” https://github.com/delphes/delphes/blob/master/cards/delphes_card_IDEA.tcl, 2026

2026
[52]

WHIZARD: Simulating Multi-Particle Processes at LHC and ILC

W. Kilian, T. Ohl and J. Reuter,WHIZARD: Simulating multi-particle processes at LHC and ILC,Eur. Phys. J. C71(2011) 1742 [0708.4233]

work page Pith review arXiv 2011
[53]

Francois and G

B. Francois and G. Ganis,The fcc software for ped studies, Mar., 2025. 10.17181/kz4kp-h2j85

work page doi:10.17181/kz4kp-h2j85 2025
[54]

PYTHIA 6.4 Physics and Manual

T. Sjostrand, S. Mrenna and P.Z. Skands,PYTHIA 6.4 Physics and Manual,JHEP05 (2006) 026 [hep-ph/0603175]. [68]DELPHES 3collaboration,DELPHES 3, A modular framework for fast simulation of a generic collider experiment,JHEP02(2014) 057 [1307.6346]. [69]Key4hepcollaboration,The Key4hep software stack: Beyond Future Higgs factories, December, 2023 [2312.08151]

work page Pith review arXiv 2006
[55]

Blondel, J

A. Blondel, J. Gluza, S. Jadach, P. Janot and T. Riemann, eds.,Theory for the FCC-ee: Report on the 11th FCC-ee Workshop Theory and Experiments, vol. 3/2020 ofCERN Yellow Reports: Monographs, (Geneva), CERN, 5, 2019. 10.23731/CYRM-2020-003

work page doi:10.23731/cyrm-2020-003 2020
[56]

Jadach, W

S. Jadach, W. Płaczek, M. Skrzypek, B.F.L. Ward and S.A. Yost,The path to 0.01% theoretical luminosity precision for the FCC-ee,Phys. Lett. B790(2019) 314 [1812.01004]

work page arXiv 2019
[57]

Djouadi, J

A. Djouadi, J. Kalinowski, M. Muehlleitner and M. Spira,HDECAY: Twenty++years after, Comput. Phys. Commun.238(2019) 214 [1801.09506]. [73]Particle Data Groupcollaboration,Review of particle physics,Phys. Rev. D110(2024) 030001

work page arXiv 2019
[58]

Catani, Y.L

S. Catani, Y.L. Dokshitzer, M.H. Seymour and B.R. Webber,Longitudinally invariantkT clustering algorithms for hadron hadron collisions,Nucl. Phys. B406(1993) 187

1993
[59]

FastJet user manual

M. Cacciari, G.P. Salam and G. Soyez,FastJet User Manual,Eur. Phys. J. C72(2012) 1896 [1111.6097]

work page internal anchor Pith review arXiv 2012
[60]

Xia,Understanding the boosted decision tree methods with the weak-learner approximation,1811.04822

L.-G. Xia,Understanding the boosted decision tree methods with the weak-learner approximation,1811.04822

work page arXiv
[61]

XGBoost: A Scalable Tree Boosting System

T. Chen and C. Guestrin,XGBoost: A Scalable Tree Boosting System, inProceedings of the 22nd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, pp. 785–794, ACM, 2016, DOI [1603.02754]. [78]CMScollaboration,Study of the Mass and Spin-Parity of the Higgs Boson Candidate Via Its Decays to Z Boson Pairs,Phys. Rev. Lett.110(2013) 08180...

work page Pith review arXiv 2016
[62]

Bedeschi, L

F. Bedeschi, L. Gouskos and M. Selvaggi,Jet flavour tagging for future colliders with fast simulation,Eur. Phys. J. C82(2022) 646 [2202.03285]

work page arXiv 2022
[63]

Barlow and C

R.J. Barlow and C. Beeston,Fitting using finite Monte Carlo samples,Comput. Phys. Commun.77(1993) 219. – 29 –

1993
[64]

Prospects for evidence at the FCC-ee of the resonante+e− →H→W W ∗ process at√s= 125 GeV

A. Fatehi, R. Jafari Seyedabad, D. d’Enterria, L. Portales and M. Selvaggi, “Prospects for evidence at the FCC-ee of the resonante+e− →H→W W ∗ process at√s= 125 GeV.” in preparation, (2026). A Cone isolation optimization The charged-lepton isolation parameters, including the cone radius (R) and the relative charged-hadron momentum fraction inside the cone...

2026