Beyond the Standard Model Higgs physics: Hunting $h \rightarrow bs$ with Higgs-strahlung at CEPC and FCC-ee

A. I. Garc\'ia-Gutierrez; Diego Carre\~no; M. A. Arroyo-Ure\~na; M. G. Villanueva-Utrilla; T. A. Valencia-P\'erez

REVIEW 1 major objections 3 minor 41 references

Beyond the Standard Model Higgs physics: Hunting $h \rightarrow bs$ with Higgs-strahlung at CEPC and FCC-ee

T0 review · 1 major / 3 minor · reviewed 2026-08-06 · deepseek-v4-flash

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Pith's one-line read Within the Type III two-Higgs-doublet model, the flavor-changing decay $h\to bs$ from $e^+e^-\to Zh$ is projected to be discoverable at $5\sigma$ at CEPC and FCC-ee with $1\,\text{ab}^{-1}$ of data.

desk verdict Competent BDT projection for h->bs at CEPC/FCC-ee undermined by an uncomputed B_s-mixing constraint that likely kills the advertised 5-sigma region. read the letter →

arxiv 2507.01141 v2 pith:Y36N74ZV submitted 2025-07-01 hep-ph

M. A. Arroyo-Ureña , Diego Carreño , A. I. García-Gutierrez , M. G. Villanueva-Utrilla , T. A. Valencia-Pérez This is my paper

classification hep-ph

keywords htobsdecaytwo-Higgs-doubletmodeltypeIIIflavor-changingneutralcurrentHiggs-strahlungCEPCFCC-eeboosteddecisiontreesmu+mu-constraint

verification ladder T0 review T1 audit T2 compute T3 formal

The pith

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

The reading

This paper claims that the flavor-changing neutral-current decay $h\to bs$, produced through Higgs-strahlung $e^+e^- \to Zh$, is discoverable at the next circular lepton colliders. Within the Type III two-Higgs-doublet model with four-zero Yukawa textures, the decay rate can be several orders of magnitude above the Standard Model prediction while still evading current constraints. After a full simulation chain and a boosted-decision-tree analysis, the authors project $5\sigma$ discovery sensitivity at CEPC and FCC-ee for $\cos(\alpha-\beta)=-0.1$ with $1\,\text{ab}^{-1}$ of integrated luminosity at $\sqrt{s}=240$ GeV, and comparable reach at 365 GeV. If true, the $h\to bs$ channel would become a practical early target for probing physics beyond the Standard Model at either machine.

What carries the argument

The carrying object is the effective $hbs$ coupling of the texturized 2HDM-III, $g_{hbs} \propto \cos(\alpha-\beta)\tan\beta\,\chi_{bs}\sqrt{m_s m_b}/v$, which controls the partial width $\Gamma(h\to bs)$ and hence the branching ratio that sets the signal rate. The second mechanism is the boosted-decision-tree classifier, a multivariate machine-learning discriminator trained on the invariant mass of the lepton pair, the invariant mass of the two jets, transverse momenta, pseudorapidities, angular separation, jet multiplicity, and missing transverse energy; it separates the two-lepton two-jet signal from irreducible backgrounds that share the same final state.

What would settle it

Recompute the 2HDM-III constraint on $\chi_{bs}$ using the current world average of $\mathrm{BR}(B_s\to\mu^+\mu^-)$: if it excludes $\chi_{bs}\gtrsim3$ at $\tan\beta\simeq10$--$20$, the predicted $5\sigma$ regions in the significance maps disappear. Alternatively, an early CEPC or FCC-ee run at 240 GeV with $1\,\text{ab}^{-1}$ that observes no excess in $e^+e^-\to Zh\to\ell^+\ell^- bs$ would falsify the benchmark claim.

Watch

Extended reading notes

Core claim

On the paper's own terms, the central claim is that the coupling $g_{hbs} = \frac{\cos(\alpha-\beta)\tan\beta}{\sqrt{2}\sin\beta}\frac{\sqrt{m_s m_b}}{v}\chi_{bs}$, generated by off-diagonal Yukawa textures, lifts $\mathrm{BR}(h\to bs)$ to $\mathcal{O}(10^{-3})$, against the Standard Model's $1.78\times10^{-7}$. The authors simulate $e^+e^- \to Zh$ with $h\to bs$ and $Z\to \ell^+\ell^-$, include the dominant backgrounds ($Zh$ with $h\to b\bar b/c\bar c/s\bar s$, $ZZ$, $e^+e^-Z$, and $t\bar t$ where kinematically open), train a boosted decision tree on kinematic observables, and weight signal and background by expected yields with a 4% systematic uncertainty. For the benchmark $\cos(\alpha-\beta)=-0.1$, they project a discovery significance above $5\sigma$ at $1\,\text{ab}^{-1}$ for broad regions of the $\chi_{bs}$--$\tan\beta$ plane at both colliders and both energies; for the more decoupled benchmark $\cos(\alpha-\beta)=-0.05$, they project $2\sigma$ exclusion limits instead.

Load-bearing premise

The projection depends on the assumption that the measured rate of $B_s\to\mu^+\mu^-$ leaves the flavor-changing parameter $\chi_{bs}$ as large as 9 available at $\tan\beta$ between 10 and 20; all predicted $5\sigma$ regions sit inside that still-allowed portion of parameter space.

Editorial extensions

If this is right

A $1\,\text{ab}^{-1}$ run at 240 GeV could already reach discovery sensitivity for the $h\to bs$ decay in the first phase of CEPC or FCC-ee.
A 365 GeV run provides a cross-check: the signal rate drops, but backgrounds drop more, so comparable $5\sigma$ reach survives.
A null result at this sensitivity would exclude the $\cos(\alpha-\beta)=-0.1$ benchmark for $\chi_{bs}\gtrsim2$--$3$ and $\tan\beta\gtrsim10$, ruling out the largest flavor-changing couplings in the model.
The predicted $\mathrm{BR}(h\to bs)\sim\mathcal{O}(10^{-3})$ is within reach of the expected CEPC and FCC-ee flavor-physics sensitivities, so the channel is not merely theoretical.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

The viability of the discovery regions hinges on the $\mathrm{BR}(B_s\to\mu^+\mu^-)$ constraint adopted from the authors' earlier work; a future update that tightens this bound would shrink or eliminate the $5\sigma$ regions even though the collider analysis itself would be unchanged.
The same simulation pipeline could be adapted to the related decays $h\to bd$ and $h\to sd$, which are even more suppressed in the Standard Model and would provide a sharper test of the texture mechanism.
If the model is correct, the $h\to bs$ signal would appear in both the 240 GeV and 365 GeV data sets, so consistency between the two energy stages is a built-in cross-check that the paper does not quantify as a joint significance.
A null result would not falsify the Type III model, but would push its flavor-changing couplings toward the decoupling-like benchmark $\cos(\alpha-\beta)=-0.05$, where only exclusion limits are expected.

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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Desk Editor's Note

read the letter

The short version: the BDT analysis is carefully done, but the paper's headline 5-sigma region sits in parameter space that the authors never checked against B_s–bar B_s mixing. At their benchmark, chi_bs=9, tan beta=20, cos(alpha-beta)=-0.1, the hbs coupling is about 0.032. The tree-level h-exchange contribution to M_12 is roughly 10^3–10^4 times the SM value, which would make Delta M_s many orders of magnitude above the measured 17.7 ps^-1. Unless the H/A contributions cancel the h one (and the paper does not compute them), the benchmark is already excluded. This is not a small omission; it is the load-bearing constraint for the entire discovery claim.

Credit where earned: the full simulation chain (MadGraph/Pythia/Delphes) and BDT with XGBoost are competently executed. They state systematics (total 4.36%), report AUC values and KS tests, and are explicit that chi_bs is scanned, not fitted. The reach maps at CEPC and FCC-ee, for both 240 and 365 GeV, extend earlier sensitivity studies in Refs. [15] and [16] by adding the BDT discrimination and the 2HDM-III four-zero texture context.

Soft spots, in proportion. The missing Delta M_s constraint is the big one. The minor issues: no repository or commit hash for reproduction, BDT thresholds optimized on the same MC samples (though the KS tests suggest no severe overtraining), and Table 2 does not list chi_bs even though Fig. 3 is specifically about chi_bs. The reliance on the prior paper [23] for the Bs->mu+mu- constraint is acceptable in principle, but that constraint is separate from B_s mixing.

Who this is for: people working on flavor-violating Higgs decay projections at future lepton colliders will find the analysis template useful, but the quoted 5-sigma numbers should not be taken as benchmarks until the mixing constraint is folded in. The paper deserves serious peer review, not a desk reject, because the flaw is fixable and the collider analysis itself is solid. I would ask the authors to compute the B_s-mixing constraint, show whether any region survives, and rerun the significance maps accordingly. If a surviving region remains, the paper becomes strong; as it stands, the central claim is not established.

Referee Report

1 major / 3 minor

Summary. The paper studies the flavor-changing neutral-current decay h -> bs in a four-zero-texture Two-Higgs-Doublet Model of type III, produced via e+e- -> Zh (Higgs-strahlung) at the CEPC and FCC-ee at sqrt(s) = 240 and 365 GeV. The coupling g_hbs is expressed in terms of chi_bs, tan beta, and cos(alpha - beta). The authors constrain the parameter space using LHC Higgs signal strengths, lepton-flavor-violating decays, and BR(Bs -> mu+mu-) taken from a previous paper, then simulate signal and SM backgrounds with MadGraph5/Pythia8/Delphes, train Boosted Decision Tree classifiers, and project signal significances. The central claim is that a 5-sigma discovery sensitivity is reached in broad parameter regions, e.g., for CEPC at 240 GeV with 1/ab and cos(alpha - beta) = -0.1: 3 < chi_bs < 9 and 10 < tan beta < 20, with comparable regions for FCC-ee and at 365 GeV.

Significance. The paper provides a complete and internally consistent simulation chain, from the 2HDM-III Lagrangian to event generation, fast detector simulation, BDT classification, and significance projection. The BDT validation with training/test Kolmogorov-Smirnov p-values and the explicit systematic-uncertainty budget are good practices, and the projected regions are plainly falsifiable targets for future e+e- Higgs factories. If the quoted parameter regions were genuinely viable, the result would be a valuable, concrete benchmark for flavor-violating Higgs searches. The analysis is not circular: the significance is a conditional projection over stated free parameters. The credibility of the projection, however, rests entirely on the constraints that define the 'viable' regions, and here the paper has a load-bearing gap: the tree-level FCNC coupling that produces h -> bs also induces B_s-Bbar_s mixing, a constraint that is not included in the analysis.

major comments (1)

[Sec. 2.3; Table 2] The parameter scan table does not list chi_bs, even though Fig. 3 and all subsequent significance maps are functions of chi_bs. Table 2 lists scan ranges for LFV processes and signal strengths but omits the parameter that is central to the Bs -> mu+mu- constraint and to the h -> bs signal. Without the chi_bs scan range, or a specific pointer to the calculation in Ref. [23] including its numerical inputs, the reader cannot verify that the 'allowed' points displayed in Fig. 3 and used in Sec. 3.3 were generated by the stated constraints. Please add chi_bs (and any correlated parameters) to Table 2, or quote the relevant equations and scan ranges from Ref. [23].

minor comments (3)

[Sec. 3.2.1; figure captions] The text quotes a total systematic uncertainty of 4.36%, while the captions of Figs. 9-12 state that the significance calculation incorporates a 4% systematic uncertainty; please harmonize the number.
[Sec. 3.2.1] The manuscript states that BDT hyperparameters and datasets are provided 'here or upon request,' but no link or attachment appears in the submitted text; please include an actual repository link or specify the data-availability procedure.
[Sec. 2.3; Eq. (2.20)] The expression for g_hbs appears twice, as Eq. (2.20) and Eq. (3.1); consider keeping one definition and referencing it in the collider section to avoid duplication.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the projected 5σ sensitivity is a conditional scan over free couplings, not a fitted or self-referential prediction.

full rationale

The paper's derivation chain is a standard model-sensitivity study: the FCNC coupling g_hbs (Eqs. (2.20)/(3.1)) is written in terms of free parameters (χ_bs, tan β, cos(α−β)); the branching ratio and signal cross section follow by direct calculation, and the significance is obtained from simulated signal and background samples after a BDT selection with training/test consistency checks. Nothing in the chain fits a parameter to the h→bs observable and then re-presents the fit as a prediction: the 5σ regions in Figs. 9–12 are conditional statements, not extractions of χ_bs from data. The main self-reliance is the use of Ref. [23] (same author group) for the Bs→μ+μ−-based allowed regions in Sec. 2.3/Fig. 3. That citation is load-bearing for the 'viable region' premise, but it is an external, published calculation constrained by CMS data on Bs→μ+μ−, an observable different from the predicted h→bs signal; it does not reduce the target claim to its own input. The skeptic's point about an omitted B_s–Bbar_s mixing constraint is a physics-completeness concern, not a circularity: an additional external bound could exclude the quoted points, but that would not make the significance calculation equivalent to its inputs. No equation in the paper equates the predicted significance to a fitted quantity or to the constraint that defines the allowed region.

Assumptions & free parameters 4 free parameters · 5 assumptions · 0 invented entities

The paper introduces no new particles, forces, or symmetries; its predictions depend entirely on the established 2HDM-III scalar and Yukawa sector. The free parameters chi_bs, tan beta, and cos(alpha-beta) are scanned rather than derived, which is normal for a sensitivity study. The leading unstated input is the transfer of the allowed-region calculation from Ref. [23], and the leading analysis choice is the BDT threshold optimization.

free parameters (4)

chi_bs = scanned 0 to 10
Dimensionless flavor-changing coupling controlling the h-b-s interaction in Eq. (2.20); it is not predicted and directly sets the signal rate.
tan beta = scanned 0.1 to 50; discovery region 10 to 20
VEV ratio that enhances the g_hbs coupling at large values; the 5 sigma regions require tan beta about 10 to 20.
cos(alpha - beta) = benchmarks -0.05 and -0.1
Mixing-angle parameter chosen near the decoupling limit; the -0.1 benchmark gives cross sections roughly one order of magnitude larger.
BDT score thresholds = 0.82 to 0.925 depending on scenario
Classifier cuts optimized per collider and energy to maximize the significance; this introduces selection bias because the same simulated samples are used for optimization and evaluation.

assumptions (5)

domain assumption The 2HDM-III with four-zero Yukawa textures is the correct low-energy framework for FCNC Higgs couplings.
Adopted in Sec. 2.2; all predicted h to bs rates and constraints depend on this model assumption.
domain assumption The scalar potential is CP-conserving with real parameters lambda5, lambda6, lambda7, mu12 and real VEVs.
Stated after Eq. (2.1); it fixes the physical scalar spectrum and the couplings used in the analysis.
domain assumption The four-zero texture mass-matrix relations in Eqs. (2.10) and (2.11) reproduce the observed fermion masses and CKM matrix.
Invoked in Sec. 2.2 to express Yukawa matrices through masses and the chi parameters; Appendix A supplies the diagonalization matrix.
domain assumption The constraint calculations from Ref. [23] for Bs to mu+mu-, LFV decays, and LHC signal strengths are correct and complete.
Sec. 2.3 relies on the authors' prior paper for the allowed parameter regions shown in Figs. 1 and 3 without reproducing the full analytical expressions.
domain assumption The Delphes default CEPC and IDEA cards give a realistic detector response for b-tagging, mistag rates, and lepton efficiencies.
Sec. 3 states the b-tagging efficiency 0.8 and mistag rates 0.1 and 0.001; the projected significances depend on these values.

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Cite this review

Pith. "Pith review of Beyond the Standard Model Higgs physics: Hunting $h \rightarrow bs$ with Higgs-strahlung at CEPC and FCC-ee." pith.science (2026). https://pith.science/paper/Y36N74ZV

@misc{pith2026250701141,
  author       = {Pith},
  title        = {Pith review of: Beyond the Standard Model Higgs physics: Hunting $h \rightarrow bs$ with Higgs-strahlung at CEPC and FCC-ee},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/Y36N74ZV}},
  note         = {Machine review of arXiv:2507.01141}
}

abstract

The next generation of circular electron-positron colliders, such as the Circular Electron Positron Collider and the Future Circular Collider, will provide an unprecedented level of precision in probing the properties of the Higgs boson. In this study, we examine the flavor-changing neutral Higgs decay $h\to bs$ produced via the Higgs-strahlung process within the framework of the Two-Higgs-Doublet Model Type III. We identify regions of the parameter space that remain viable after applying stringent constraints from current experimental data. By employing a multivariate analysis based on Boosted Decision Trees, we project that a signal significance of $5\sigma$ can be achieved, even after accounting for irreducible backgrounds and systematic uncertainties. Our findings show that these future colliders could offer a unique avenue for discovering signatures of physics beyond the standard model.

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Works this paper leans on

41 extracted references · 16 canonical work pages

[15]

Ai et al., Flavor Physics at CEPC: a General Perspective, 2412.19743

X. Ai et al., Flavor Physics at CEPC: a General Perspective, 2412.19743

arXiv
[16]

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. D 109 (2024) L011301 [ 2306.17520]

arXiv 2024
[23]

Hunting a charged Higgs boson pair in proton-proton collisions

M.A. Arroyo-Ure˜ na, E.A. Herrera-Chac´ on, S. Rosado-Navarro and H. Salazar, Hunting for a charged Higgs boson pair in proton-proton collisions, Phys. Rev. D 111 (2025) 015023 [2405.06036]

work page Pith review arXiv 2025
[1]

CMS collaboration, Observation of a New Boson with Mass Near 125 GeV in pp Collisions at √s = 7 and 8 TeV, JHEP 06 (2013) 081 [ 1303.4571]

arXiv 2013
[2]

ATLAS collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2012) 1 [ 1207.7214]

arXiv 2012
[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]

Higgs, Broken Symmetries and the Masses of Gauge Bosons, Phys

P.W. Higgs, Broken Symmetries and the Masses of Gauge Bosons, Phys. Rev. Lett. 13 (1964) 508

work page 1964
[5]

The GIM Mechanism: origin, predictions and recent uses

L. Maiani, The GIM Mechanism: origin, predictions and recent uses, in 48th Rencontres de Moriond on Electroweak Interactions and Unified Theories, pp. 3–16, 2013 [1303.6154]

work page Pith review arXiv 2013

Show all 41 references

[6]

Farrera, A

C.M. Farrera, A. Granados-Gonz´ alez, H. Novales-S´ anchez and J.J. Toscano, Quark-flavor-changing Higgs decays from a universal extra dimension, Int. J. Mod. Phys. A 35 (2020) 2050141 [ 2003.05571]

2020 arXiv
[7]

Schopper, LEP - The Lord of the Collider Rings at CERN 1980-2000

H. Schopper, LEP - The Lord of the Collider Rings at CERN 1980-2000. The Making, Operation and Legacy of the World’s Largest Scientific Instrument, Springer (2009), 10.1007/978-3-540-89301-1

2009 doi
[8]

Apollinari, O

G. Apollinari, O. Br¨ uning, T. Nakamoto and L. Rossi, High Luminosity Large Hadron Collider HL-LHC, CERN Yellow Rep. (2015) 1 [1705.08830]

2015 arXiv
[9]

Cepeda et al., Report from Working Group 2: Higgs Physics at the HL-LHC and HE-LHC, CERN Yellow Rep

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]. – 21 –

2019 arXiv
[10]

Arkani-Hamed, T

N. Arkani-Hamed, T. Han, M. Mangano and L.-T. Wang, Physics opportunities of a 100 TeV proton–proton collider, Phys. Rept. 652 (2016) 1 [1511.06495]

2016 arXiv
[11]

CEPC Study Groupcollaboration, CEPC Technical Design Report: Accelerator, Radiat. Detect. Technol. Methods 8 (2024) 1 [ 2312.14363]

2024
[12]

FCC collaboration, FCC-ee: The Lepton Collider: Future Circular Collider Conceptual Design Report Volume 2, Eur. Phys. J. ST 228 (2019) 261

2019
[13]

ILC International Development Teamcollaboration, The International Linear Collider: Report to Snowmass 2021, 2203.07622

2021
[14]

Adli et al., The Compact Linear e +e− Collider (CLIC), 2503.24168

E. Adli et al., The Compact Linear e +e− Collider (CLIC), 2503.24168

arXiv
[17]

Fritzsch and Z.-z

H. Fritzsch and Z.-z. Xing, A Symmetry pattern of maximal CP violation and a determination of the unitarity triangle, Phys. Lett. B 353 (1995) 114 [ hep-ph/9502297]

1995 arXiv
[18]

Branco, D

G.C. Branco, D. Emmanuel-Costa and R. Gonzalez Felipe, Texture zeros and weak basis transformations, Phys. Lett. B 477 (2000) 147 [hep-ph/9911418]

2000 arXiv
[19]

Lorenzo D ´ ıaz-Cruz,The Higgs profile in the standard model and beyond, Rev

J. Lorenzo D ´ ıaz-Cruz,The Higgs profile in the standard model and beyond, Rev. Mex. Fis. 65 (2019) 419 [ 1904.06878]

2019 arXiv
[20]

Diaz-Cruz, R

J.L. Diaz-Cruz, R. Noriega-Papaqui and A. Rosado, Mass matrix ansatz and lepton flavor violation in the THDM-III, Phys. Rev. D 69 (2004) 095002 [hep-ph/0401194]

2004 arXiv
[21]

Arroyo-Ure˜ na, J.L

M.A. Arroyo-Ure˜ na, J.L. Diaz-Cruz, E. D ´ ıaz and J.A. Orduz-Ducuara, Flavor violating Higgs signals in the Texturized Two-Higgs Doublet Model (THDM-Tx), Chin. Phys. C 40 (2016) 123103 [ 1306.2343]

2016 arXiv
[22]

Hern´ andez-S´ anchez, S

J. Hern´ andez-S´ anchez, S. Moretti, R. Noriega-Papaqui and A. Rosado,Off-diagonal terms in yukawa textures of the type-iii 2-higgs doublet model and light charged higgs boson phenomenology, JHEP 1307 (2013) 044 [ 1212.6818]

2013 arXiv
[24]

CMS collaboration, Search for lepton flavour violating decays of the higgs boson to µτ and eτ in proton-proton collisions at √s = 13 tev, JHEP 06 (2018) 001 [ 1712.07173]

2018 arXiv
[25]

ATLAS collaboration, Searches for lepton-flavour-violating decays of the higgs boson in√s = 13 tev pp collisions with the atlas detector, Phys. Lett. B 800 (2020) 135069 [1907.06131]

2020 arXiv
[26]

Belle collaboration, Search for lepton-flavor-violating tau-lepton decays to ℓγ at Belle, JHEP 10 (2021) 19 [ 2103.12994]. – 22 –

2021 arXiv
[27]

BaBar collaboration, Searches for Lepton Flavor Violation in the Decays τ ± → e±γ and τ ± → µ±γ, Phys. Rev. Lett. 104 (2010) 021802 [ 0908.2381]

2010 arXiv
[28]

MEG collaboration, Search for the lepton flavour violating decay µ+ → e+γ with the full dataset of the MEG experiment, Eur. Phys. J. C 76 (2016) 434 [ 1605.05081]

2016 arXiv
[29]

Particle Data Groupcollaboration, Review of particle physics, PTEP 2022 (2022) 083C01

2022
[30]

CMS collaboration, Measurement of the B 0 S→µ+µ− decay properties and search for the B 0→µ+µ− decay in proton-proton collisions at √s = 13 TeV, Phys. Lett. B 842 (2023) 137955 [ 2212.10311]

2023 arXiv
[31]

Alloul, N.D

A. Alloul, N.D. Christensen, C. Degrande, C. Duhr and B. Fuks, Feynrules 2.0 - a complete toolbox for tree-level phenomenology, Comput. Phys. Commun. 185 (2014) 2250 [1310.1921]

2014 arXiv
[32]

Degrande, C

C. Degrande, C. Duhr, B. Fuks, D. Grellscheid, O. Mattelaer and T. Reiter, UFO - The Universal FeynRules Output, Comput. Phys. Commun. 183 (2012) 1201 [1108.2040]

2012 arXiv
[33]

Alwall, M

J. Alwall, M. Herquet, F. Maltoni, O. Mattelaer and T. Stelzer, Madgraph 5: going beyond, JHEP 06 (2011) 128

2011
[34]

Sjostrand, Pythia 8 status report, Tech

T. Sjostrand, Pythia 8 status report, Tech. Rep. DESY (2009), DOI

2009
[35]

de Favereau, C

J. de Favereau, C. Delaere, P. Demin, A. Giammanco, V. Lemaitre, A. Mertens et al., Delphes 3, a modular framework for fast simulation of a generic collider experiment, JHEP 02 (2014) 057

2014
[36]

Coadou, Boosted decision trees, 2206.09645

Y. Coadou, Boosted decision trees, 2206.09645

arXiv
[37]

Hastie, R

T. Hastie, R. Tibshirani and J. Friedman, The Elements of Statistical Learning, Springer (2009), 10.1007/978-0-387-84858-7

2009 doi
[38]

B. L. et al., Classification and regression trees, Wadsworth international group, California, USA (1984)

1984
[39]

Chen and C

T. Chen and C. Guestrin, XGBoost: A scalable tree boosting system, in Proc. 22nd ACM SIGKDD Int. Conf. on Knowledge Discovery and Data Mining, KDD ’16, (New York, NY, USA), p. 785, ACM, 2016, DOI

2016
[40]

Liang, Y

H. Liang, Y. Zhu, Y. Wang, Y. Che, C. Zhou, H. Qu et al., Jet-Origin Identification and Its Application at an Electron-Positron Higgs Factory, Phys. Rev. Lett. 132 (2024) 221802 [ 2310.03440]

2024 arXiv
[41]

Akiba, S

T. Akiba, S. Sano, T. Yanase, T. Ohta and M. Koyama, Optuna: A next-generation hyperparameter optimization framework, in Proceedings of the 25th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining, pp. 2623–2631, 2019. – 23 –

2019

Pith tools

Reviewed August 6, 2026 · model on record in the stance chip above.

[1] [15]

Ai et al., Flavor Physics at CEPC: a General Perspective, 2412.19743

X. Ai et al., Flavor Physics at CEPC: a General Perspective, 2412.19743

arXiv

[2] [16]

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. D 109 (2024) L011301 [ 2306.17520]

arXiv 2024

[3] [23]

Hunting a charged Higgs boson pair in proton-proton collisions

M.A. Arroyo-Ure˜ na, E.A. Herrera-Chac´ on, S. Rosado-Navarro and H. Salazar, Hunting for a charged Higgs boson pair in proton-proton collisions, Phys. Rev. D 111 (2025) 015023 [2405.06036]

work page Pith review arXiv 2025

[4] [1]

CMS collaboration, Observation of a New Boson with Mass Near 125 GeV in pp Collisions at √s = 7 and 8 TeV, JHEP 06 (2013) 081 [ 1303.4571]

arXiv 2013

[5] [2]

ATLAS collaboration, Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2012) 1 [ 1207.7214]

arXiv 2012

[6] [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

[7] [4]

Higgs, Broken Symmetries and the Masses of Gauge Bosons, Phys

P.W. Higgs, Broken Symmetries and the Masses of Gauge Bosons, Phys. Rev. Lett. 13 (1964) 508

work page 1964

[8] [5]

The GIM Mechanism: origin, predictions and recent uses

L. Maiani, The GIM Mechanism: origin, predictions and recent uses, in 48th Rencontres de Moriond on Electroweak Interactions and Unified Theories, pp. 3–16, 2013 [1303.6154]

work page Pith review arXiv 2013