{"total":16,"items":[{"citing_arxiv_id":"2605.22464","ref_index":13,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Pseudo-Nambu-Goldstone inflation with $Z_N$ symmetric waterfall fields","primary_cat":"hep-ph","submitted_at":"2026-05-21T13:25:27+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Hybrid inflation model with Z_N-symmetric waterfall fields cancels quadratic radiative corrections for any N and logarithmic ones for N>2, yielding a stable inflaton potential and domain-wall-free reheating via Higgs-portal couplings.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2605.11630","ref_index":56,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Long-lived sterile neutrinos from axionlike particles at the Super Tau-Charm Facility","primary_cat":"hep-ph","submitted_at":"2026-05-12T06:55:48+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"STCF can reach |V_eN|^2 values one to two orders of magnitude below current bounds for heavy neutral leptons via displaced-vertex searches from ALP decays in D-meson production.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"a pseudo-Nambu-Goldstone boson arising from the spontaneous breaking of a global U(1) PQ symmetry to solve the strong CP problem [11]. More generally, ALPs appear ubiquitously in extensions of the SM, where their masses and couplings are largely independent parameters. They are closely connected to the strong CP problem [11], dark matter [52-55], and the hierarchy problem [56]. UV completions that predict the ALPs include string compactifica- tions [57, 58], Froggatt-Nielsen models of flavor [59, 60], and supersymmetry models [61]. In this work, we will focus on the ALP-HNL portal and perform a phenomenological study. In the ALP-HNL portal model, the ALPs and the HNLs can be coupled to each other, leading to phenomenologies more complicated than those arising from simple, single-portal"},{"citing_arxiv_id":"2605.00549","ref_index":12,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Bounds on massive graviton-like particles from searches for axion-like particles coupling to photons","primary_cat":"hep-ph","submitted_at":"2026-05-01T10:04:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Limits on axion-like particles from photon-coupling searches are recast as constraints on massive graviton-like particles across lab, astrophysical, and cosmological experiments using analogous Primakoff and Gertsenshtein conversion mechanisms.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"More generally, ALPs also arise as light pseudoscalars that can serve as dark matter (DM) candidates [4, 5], or mediators between DM and SM fields [6-8]. They also appear as pNGBs from spontaneously broken U(1) global symmetries, in composite or extended Higgs sectors [9, 10], in string-theory-inspired models [11], or (as \"relaxions\") in theories addressing the electroweak (EW) hierarchy problem [12, 13]. Unlike the QCD axion, whose mass and couplings are tied to a single underlying scale, the ALP mass and SM couplings are independent parameters and can be varied separately. Although experimentally and theoretically less studied than spin-0 ALPs, hypothetical spin-2 massive graviton-like particles (called hereafter GLPs), are also predicted in different models of"},{"citing_arxiv_id":"2604.27376","ref_index":84,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Electroweak Baryogenesis from Collapsing Domain Walls","primary_cat":"hep-ph","submitted_at":"2026-04-30T03:40:11+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Collapsing axion-like domain walls generate the baryon asymmetry by acting as an effective chemical potential through coupling to the electroweak topological term, with the asymmetry produced via sphaleron processes.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"D92, 123009 (2015), arXiv:1504.03291 [astro-ph.CO]. [81] M. Hindmarsh, S. J. Huber, K. Rummukainen, and D. J. Weir, Phys. Rev. D96, 103520 (2017), [Erra- tum: Phys.Rev.D 101, 089902 (2020)], arXiv:1704.05871 [astro-ph.CO]. [82] C. Capriniet al., JCAP03, 024 (2020), arXiv:1910.13125 [astro-ph.CO]. [83] M. Vanvlasselaer and W. Yin, (2026), arXiv:2604.20762 [hep-ph]. [84] P. W. Graham, D. E. Kaplan, and S. Rajendran, Phys. Rev. Lett.115, 221801 (2015), arXiv:1504.07551 [hep- ph]. [85] J. R. Espinosa, C. Grojean, G. Panico, A. Pomarol, O. Pujol` as, and G. Servant, Phys. Rev. Lett.115, 251803 (2015), arXiv:1506.09217 [hep-ph]."},{"citing_arxiv_id":"2604.20768","ref_index":87,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Primordial Magnetogenesis and Gravitational Waves from ALP-assisted Phase Transition","primary_cat":"hep-ph","submitted_at":"2026-04-22T16:57:22+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"ALP-assisted first-order phase transitions can explain observed intergalactic magnetic fields and produce detectable gravitational waves, linking cosmology with particle physics searches.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Quiros,Novel Effects in Electroweak Breaking from a Hidden Sector, Phys. Rev. D76(2007) 076004 [hep-ph/0701145]. [85] W.-F. Chang, J.N. Ng and J.M.S. Wu,Shadow Higgs from a scale-invariant hidden U(1)(s) model,Phys. Rev. D75(2007) 115016 [hep-ph/0701254]. [86] R. Foot, A. Kobakhidze and R.R. Volkas,Electroweak Higgs as a pseudo-Goldstone boson of broken scale invariance,Phys. Lett. B655(2007) 156 [0704.1165]. [87] R. Foot, A. Kobakhidze, K.L. McDonald and R.R. Volkas,Neutrino mass in radiatively-broken scale-invariant models,Phys. Rev. D76(2007) 075014 [0706.1829]. [88] R. Foot, A. Kobakhidze, K.L. McDonald and R.R. Volkas,A Solution to the hierarchy problem from an almost decoupled hidden sector within a classically scale invariant theory, Phys. Rev. D77(2008) 035006 [0709."},{"citing_arxiv_id":"2604.20762","ref_index":39,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Spontaneous Baryogenesis from Axions on Induced Electroweak Walls","primary_cat":"hep-ph","submitted_at":"2026-04-22T16:49:26+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"An axion-like particle's domain wall or shock wave induces an electroweak phase boundary whose motion creates a local B+L chemical potential that biases active sphalerons to generate net baryon asymmetry.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"the \"phase transition\" at the plasma temperatureT. Another important difference is thatϕ does not need to possess a potential barrier; the potential energies atϕ= 0 andϕ=vcan be significantly different. 5 This type of periodicity-breaking potential, which is technically natural, has been considered in the context of addressing the fine-tuning problem of the electroweak scale [39]. The connection will be discussed elsewhere. 6 In the inflationary case, the temperature in the symmetric phase can arise from asymmetric reheating and parametric resonance. We do not address these complications here. 17 For axion realization, we consider Vϕ[ϕ] =f 2 ϕm2 ϕF(ϕ/f ϕ),(54) whereFis a periodic function with periodicityϕ→ϕ+ 2πf ϕ, while the hilltop is atϕ= 0 and"},{"citing_arxiv_id":"2604.20418","ref_index":6,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"The phase diagram of confining holographic theories on constant curvature manifolds in the presence of a $\\theta$-angle","primary_cat":"hep-th","submitted_at":"2026-04-22T10:36:52+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Holographic confining QFTs on negative-curvature manifolds show no phase transitions with a dominant saddle, while positive-curvature cases exhibit first- and second-order transitions depending on the theory class, plus a Vafa-Witten theorem at theta zero.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2603.10915","ref_index":52,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Naturally Light Distortion","primary_cat":"gr-qc","submitted_at":"2026-03-11T15:59:43+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"A naturally light scalar-like distortion field emerges in generalized gravity and mixes with the Higgs boson.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2512.11026","ref_index":2,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Weak Scale Triggers in the SMEFT","primary_cat":"hep-ph","submitted_at":"2025-12-11T19:00:00+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"No weak scale triggers exist in the SMEFT up to dimension six (and likely eight) that can solve the hierarchy problem far above the weak scale.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2511.03786","ref_index":144,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Light new physics and the $\\tau$ lepton dipole moments","primary_cat":"hep-ph","submitted_at":"2025-11-05T19:00:02+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"This work provides a comprehensive analysis of light new physics contributions to tau lepton dipole moments, detailing interpretations of asymmetry measurements for spin-0 and spin-1 bosons, their decoupling to the EFT limit, and a case study of a tauphilic vector boson at Belle II.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"F y 2 (q2) = m2 τ 16π2 \u0012 cτ P mτ Λ \u00132h C11(θ) + 2C12(θ) +C 11(θ) i + m2 τ 16π2 \u0012 cτ Smτ Λ \u00132h C11(θ) + 2C12(θ) +C 11(θ) + 2C1(θ) + 2C2(θ) i , F y 3 (q2) = m2 τ 8π2 m2 τ cτ Scτ P Λ2 h C1(θ) +C 2(θ) i ,(9) where the arguments are summarized asθ= {m2 τ , q2, m2 τ , mϕ, mτ , mτ }and theC i denote standard Passarino-Veltman functions, see App. A and Ref. [144] for conventions. We find agreement with the results reported in the literature, in the relevant limits [145]. By evaluating the same loop diagrams fors=q 2 →0 we then obtain the corresponding contribution to theτ AMM and EDM, which we report in App. B. In the limit mτ ≫M ϕ these expressions reduce to ay τ(Mϕ ≪m τ) = 3 16π2 \u0012 cτ Smτ Λ \u00132 − 1 16π2 \u0012 cτ"},{"citing_arxiv_id":"2510.13966","ref_index":132,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Light new physics and the $\\tau$ lepton dipole moments: prospects at Belle II","primary_cat":"hep-ph","submitted_at":"2025-10-15T18:00:09+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Light new particles generate asymmetries in e+e- to tau+tau- that allow model-dependent constraints on tau dipole moments, including non-zero effects without electron polarization via imaginary parts.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"40, 279 (1978). [127] J. Jaeckel and A. Ringwald, Ann. Rev. Nucl. Part. Sci. 60, 405 (2010), 1002.0329. [128] J. Preskill, M. B. Wise, and F. Wilczek, Phys. Lett. B 120, 127 (1983). [129] L. F. Abbott and P. Sikivie, Phys. Lett. B120, 133 (1983). [130] M. Dine and W. Fischler, Phys. Lett. B120, 137 (1983). [131] F. Wilczek, Phys. Rev. Lett.49, 1549 (1982). [132] P. W. Graham, D. E. Kaplan, and S. Rajendran, Phys. Rev. Lett.115, 221801 (2015), 1504.07551. [133] A. Salam and J. A. Strathdee, Phys. Rev.184, 1760 (1969). [134] J. R. Ellis, Nucl. Phys. B22, 478 (1970), [Erratum: Nucl. Phys. B25, 639 (1971)]. [135] W. D. Goldberger, B. Grinstein, and W. Skiba, Phys. Rev. Lett.100, 111802 (2008), 0708.1463. 8 [136] P."},{"citing_arxiv_id":"2509.25305","ref_index":5,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"$\\phi$-Dwarfs: White Dwarfs probe Quadratically Coupled Scalars","primary_cat":"hep-ph","submitted_at":"2025-09-29T18:00:00+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"White dwarf mass-radius data exclude large parameter space for ultralight scalars quadratically coupled to fermions by predicting forbidden radius gaps and mass shifts toward the Chandrasekhar limit or altered maximum masses.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Zakharov,Can Confinement Ensure Natural CP Invariance of Strong Interactions?,Nucl. Phys. B166(1980) 493-506. [3] M. Dine, W. Fischler, and M. Srednicki,A Simple Solution to the Strong CP Problem with a Harmless Axion,Phys. Lett. B104(1981) 199-202. [4] A. R. Zhitnitsky,On Possible Suppression of the Axion Hadron Interactions. (In Russian), Sov. J. Nucl. Phys.31(1980) 260. [5] P. W. Graham, D. E. Kaplan, and S. Rajendran,Cosmological Relaxation of the Electroweak Scale,Phys. Rev. Lett.115(2015), no. 22 221801, [arXiv:1504.07551]. [6] G. Dvali and A. Vilenkin,Cosmic attractors and gauge hierarchy,Phys. Rev. D70(2004) 063501, [hep-th/0304043]. [7] G. Dvali,Large hierarchies from attractor vacua,Phys. Rev. D74(2006) 025018,"},{"citing_arxiv_id":"2506.15637","ref_index":5,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"A covariant description of the interactions of axion-like particles and hadrons","primary_cat":"hep-ph","submitted_at":"2025-06-18T17:08:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"A covariant framework identifies redefinition-invariant ALP couplings to gluons and quarks and computes physical decay rates for mixed scenarios.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2505.00272","ref_index":3,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Future Circular Collider Feasibility Study Report: Volume 1, Physics, Experiments, Detectors","primary_cat":"hep-ex","submitted_at":"2025-04-25T20:10:14+00:00","verdict":"ACCEPT","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"The FCC feasibility study describes how a staged electron-positron and hadron collider could deliver precision measurements on the Higgs, electroweak bosons, and top quark while searching for physics beyond the Standard Model.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"The confirmation by the LHC of the SM predictions up to the TeV range requires a different ap- proach to addressing these open questions. Solutions could exist at even higher energy, at the price of either an unnatural value of the weak scale or an ingenious but still elusive structure. Instead, radi- cally new physics scenarios have recently been devised, which often include light and feebly coupled structures [3-5]. Neither the mass scale (from meV to ZeV) of this new physics nor the intensity of the couplings to the SM (from 1 to10−12 or less) are known, thus calling for a new, broad, and powerful tool of exploration. To experimentally push the limits of the unknown as far as possible with a real chance of discovery, this tool must be able to address the following goals in the broadest and deepest possible way."},{"citing_arxiv_id":"2410.12469","ref_index":5,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"Potential of constraining the Fifth Force Using the Earth as a Spin and Mass Source from space","primary_cat":"hep-ph","submitted_at":"2024-10-16T11:34:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Theoretical proposal for a spacecraft-Earth experiment to constrain spin- and velocity-dependent fifth forces mediated by ultralight vector bosons, claiming up to three orders of magnitude improvement over current bounds.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"1907.04473","ref_index":156,"ref_count":1,"confidence":0.98,"is_internal_anchor":true,"paper_title":"CMB-S4 Science Case, Reference Design, and Project Plan","primary_cat":"astro-ph.IM","submitted_at":"2019-07-10T01:01:01+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"Presents the science case, reference design, and project plan for the CMB-S4 ground-based CMB experiment.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"is both a window into the dark sector and a necessary tool for calibrating measurements of the lower-redshift Universe. The possibility of additional radiation is also compelling, in the contexts of both particle physics and cosmology [11, 141, 12]. New light particles may arise in the form of axions and sterile neutrinos, or can appear as a byproduct of new symmteries that would explain the small mass of the Higgs boson [142, 143, 144, 145, 146, 147, 148, 10, 149, 150, 151, 152, 11, 153, 154, 141, 155, 12, 156, 157, 158, 159]. Furthermore, light particles can thermalize in the early Universe for wide ranges of unexplored parameter space, leading to an observable level of additional radiation. Light particles may form the dark matter (e.g., axions) or part of a dark sector, they can mediate forces in the dark and visible sectors, or they can result from the decay of new heavier particles."}],"limit":50,"offset":0}