Journal of High Energy Physics最新文献

{"title":"Probing new physics with the electron Yukawa coupling","authors":"Barbara Anna Erdelyi,&nbsp;Ramona Gröber,&nbsp;Nudžeim Selimović","doi":"10.1007/JHEP05(2025)135","DOIUrl":"10.1007/JHEP05(2025)135","url":null,"abstract":"<p>A dedicated run of a future electron-positron collider (FCC-ee) at a center-of-mass energy equal to the Higgs boson mass would enable a direct measurement of the electron Yukawa coupling. However, it poses substantial experimental difficulties due to large backgrounds, the requirement for monochromatised <i>e</i>⁺<i>e</i>^<i>−</i> beams, and the potential extension of the FCC-ee timeline. Given this, we explore the extent to which the electron Yukawa coupling can be enhanced in simplified UV models and examine whether such scenarios can be constrained by other FCC-ee runs or upcoming experiments at the intensity frontier. Our results indicate that in certain classes of models, the (<i>g</i> − 2)_<i>e</i> provides a probe of the electron Yukawa coupling that is as effective or better than the FCC-ee. Nevertheless, there exist models that can lead to sizeable deviations in the electron Yukawa coupling which can only be probed in a dedicated run at the Higgs pole mass.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)135.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The double copy of maximal supersymmetry in D = 4","authors":"Roberto Bonezzi,&nbsp;Giuseppe Casale,&nbsp;Olaf Hohm","doi":"10.1007/JHEP05(2025)131","DOIUrl":"10.1007/JHEP05(2025)131","url":null,"abstract":"<p>We realize off-shell, local and gauge invariant <span>( mathcal{N} )</span> = 8 supergravity in <i>D</i> = 4, to cubic order in fields, as the double copy of <span>( mathcal{N} )</span> = 4 super Yang-Mills theory (SYM). Employing the homotopy algebra approach, we show that, thanks to a redundant formulation for the fermionic fields, the kinematic algebra <span>( mathcal{K} )</span> of <span>( mathcal{N} )</span> = 4 SYM is compatible with an action of the global supersymmetry algebra. The double copy space is then a subspace of <span>( mathcal{K} )</span> ⨂ <span>( overset{sim }{mathcal{K}} )</span> that inherits an <i>L</i>_∞ algebra on which the two copies of the <span>( mathcal{N} )</span> = 4 action combine into an action of the <span>( mathcal{N} )</span> = 8 supersymmetry algebra, with a corresponding enhancement of the <i>R</i>-symmetry group to SU(8).</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)131.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On superparticles and their partition functions","authors":"E. Boffo,&nbsp;P. A. Grassi,&nbsp;O. Hulik,&nbsp;I. Sachs","doi":"10.1007/JHEP05(2025)140","DOIUrl":"10.1007/JHEP05(2025)140","url":null,"abstract":"<p>We describe a family of twisted partition functions for the relativistic spinning particle models. For suitable choices of fugacities this computes a refined Euler characteristics that counts the dimension of the physical states for arbitrary picture and, furthermore, encodes the complete BV-spectrum of the effective space-time gauge theory originating from this model upon second quantization. The relation between twisted world-line partition functions and the spectrum of the space-time theory is most easily seen on-shell but we will give an off-shell description as well. Finally we discuss the construction of a space-time action in terms of the world-line fields in analogy to string field theory.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)140.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ponderomotive effects of ultralight dark matter","authors":"Kevin Zhou","doi":"10.1007/JHEP05(2025)134","DOIUrl":"10.1007/JHEP05(2025)134","url":null,"abstract":"<p>I exhibit a new class of quadratic effects of ultralight dark matter. Axions, dark photons, and dilatons can exert rapidly oscillating forces, torques, and mass shifts on Standard Model particles. These effects average to zero at first order, but shift particle properties at second order, in analogy to the ponderomotive force in optics. Remarkably, these effects scale with the square of the amplitude of the dark matter field, even when the field’s direct physical effects depend only on its derivatives. I calculate the resulting observables in electron <i>g</i>_<i>e</i> – 2 experiments using classical mechanics, recovering results previously derived using field theory. When considered properly, these particular experiments do not beat astrophysical bounds, but other precision experiments may have interesting sensitivity.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)134.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exact path integrals on half-line in quantum cosmology with a fluid clock and aspects of operator ordering ambiguity","authors":"Vikramaditya Mondal,&nbsp;Harkirat Singh Sahota,&nbsp;Kinjalk Lochan","doi":"10.1007/JHEP05(2025)128","DOIUrl":"10.1007/JHEP05(2025)128","url":null,"abstract":"<p>We perform <i>exact</i> half-line path integral quantization of flat, homogeneous cosmological models containing a perfect fluid acting as an internal clock, in a <i>D</i> + 1 dimensional minisuperspace setup. We also discuss certain classes of operator ordering ambiguity inherent in such quantization procedures and argue that a particular ordering prescription in the quantum theory can preserve two symmetries, namely arbitrary lapse rescalings and general covariance, which are already present at the classical level. As a result of this imposition, a large class of quantum Hamiltonians differing by operator ordering produces the same inner products between quantum states. This imposition of the two symmetries of the classical minisuperspace models leads to a unique prescription for writing the quantum Hamiltonian for minisuperspace dimension <i>D</i> &gt; 2. Interestingly, in the case of <i>D</i> = 1, the lapse rescaling symmetry is lost in the quantum theory, leading to an essentially ambiguous description of the canonical theory. We provide general proof of this in the context of both canonical quantization and path integrals. We supply concrete examples to validate our findings further.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)128.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Revisiting single inclusive jet production: timelike factorization and reciprocity","authors":"Kyle Lee,&nbsp;Ian Moult,&nbsp;Xiaoyuan Zhang","doi":"10.1007/JHEP05(2025)129","DOIUrl":"10.1007/JHEP05(2025)129","url":null,"abstract":"<p>Factorization theorems for single inclusive jet production play a crucial role in the study of jets and their substructure. In the case of small radius jets, the dynamics of the jet clustering can be factorized from both the hard production dynamics, and the dynamics of the low scale jet substructure measurement, and is described by a matching coefficient that can be computed in perturbative Quantum Chromodynamics (QCD). A proposed factorization formula describing this process has been previously presented in the literature, and is referred to as the semi-inclusive, or fragmenting jets formalism. By performing an explicit two-loop calculation, we show the inconsistency of this factorization formula, in agreement with another recent result in the literature. Building on recent progress in the factorization of single logarithmic observables, and the understanding of reciprocity, we then derive a new all-order factorization theorem for inclusive jet production. The use of a jet algorithm, being only a modification of the infrared structure of the measurement, modifies the structure of convolutions in the factorization theorem, as compared to inclusive fragmentation, but maintains the universality of the inclusive hard function and its associated Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution, which are ultraviolet properties. However, the non-trivial structure of convolutions in the factorization theorem implies that the jet functions exhibit a modified evolution. We perform an explicit two-loop calculation of the jet function in both <span>( mathcal{N} )</span> = 4 super Yang-Mills (SYM), and for all color channels in QCD, finding exact agreement with the structure derived from our renormalization group equations. In addition, we derive several new results, including an extension of our factorization formula to jet substructure observables, a jet algorithm definition of a generating function for the energy correlators, and new results for exclusive jet functions. Our results are a key ingredient for achieving precision jet substructure at colliders.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)129.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Collinear anatomy","authors":"A.V. Belitsky","doi":"10.1007/JHEP05(2025)117","DOIUrl":"10.1007/JHEP05(2025)117","url":null,"abstract":"<p>We study the collinear factorization of off-shell scattering amplitudes in maximally supersymmetric Yang-Mills (sYM) theory. These are constructed starting from six-dimensional <span>( mathcal{N} )</span> = (1) sYM, taking advantage of an available unconstrained spinor-helicity formalism combined with a unitarity-cut sewing procedure. After generalized dimensional reduction, their collinear behavior is dissected with assistance from the Method of Regions. We then construct off-shell splitting amplitudes directly using the same techniques, establishing equivalence to the amplitude analysis. The calculations are performed at one-loop order.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)117.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiative corrections relating leptoquark-fermion couplings probed at low and high energy","authors":"Innes Bigaran,&nbsp;Rodolfo Capdevilla,&nbsp;Ulrich Nierste","doi":"10.1007/JHEP05(2025)123","DOIUrl":"10.1007/JHEP05(2025)123","url":null,"abstract":"<p>Scalar leptoquarks (LQ) with masses between 2 TeV and 50 TeV are prime candidates to explain deviations between measurements and Standard-Model predictions in decay observables of <i>b</i>-flavored hadrons (“flavor anomalies”). Explanations of low-energy data often involve <span>( mathcal{O} )</span>(1) LQ-quark-lepton Yukawa couplings, especially when collider bounds enforce a large LQ mass. This calls for the calculation of radiative corrections involving these couplings. Studying such corrections to LQ-mediated <i>b</i> → <i>cτν</i> and <i>b</i> → <i>sℓ</i>⁺<i>ℓ</i>^<i>−</i> amplitudes, we find that they can be absorbed into finite renormalizations of the LQ Yukawa couplings. If one wants to use Yukawa couplings extracted from low-energy data for the prediction of on-shell LQ decay rates, one must convert the low-energy couplings to their high-energy counterparts, which subsume the corrections to the on-shell LQ-quark-lepton vertex. We present compact formulae for these correction factors and find that in scenarios with <i>S</i>₁, <i>R</i>₂, or <i>S</i>₃ LQ the high-energy coupling is always smaller than the low-energy one, which weakens the impact of collider data on the determination of the allowed parameter spaces. For the <i>R</i>₂ scenario addressing <i>b</i> → <i>cτν</i>, in which one of the two involved Yukawa coupling must be significantly larger than 1, we find this coupling reduced by 15% at high energy. If both <i>S</i>₁ and <i>R</i>₂ are present, the high-energy coupling can also be larger and the size of the correction is unbounded, because tree contribution and vertex corrections involve different couplings. We further present the conversion formula to the <span>( overline{textrm{MS}} )</span> scheme for the Yukawa couplings of the <i>S</i>₃ scenario.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)123.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144091052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Large and small hierarchies from finite modular symmetries","authors":"Tetsutaro Higaki,&nbsp;Junichiro Kawamura,&nbsp;Tatsuo Kobayashi,&nbsp;Kaito Nasu,&nbsp;Riku Sakuma","doi":"10.1007/JHEP05(2025)111","DOIUrl":"10.1007/JHEP05(2025)111","url":null,"abstract":"<p>We study the moduli stabilization by the radiative corrections due to the moduli dependent vector-like masses invariant under the finite modular symmetry. The radiative stabilization mechanism can stabilize the modulus <i>τ</i> of the finite modular symmetry Γ_<i>N</i> (<i>N</i> ∈ ℕ) at Im <i>τ</i> ≫ 1, where the shift symmetry <i>τ → τ</i> + 1 remains unbroken approximately. The shift symmetry can be considered as the residual ℤ_<i>N</i> symmetry which realizes the Froggatt-Nielsen mechanism with the hierarchy parameter <i>e</i>^{<i>−</i>2<i>π</i>Im <i>τ/N</i>} ≪ 1. In this work, we study the stabilization of multiple moduli fields, so that various hierarchical values of the modular forms coexist in a model. For example, one modulus stabilized at Im <i>τ</i>₁ ∼ 3 is responsible for the hierarchical structure of the quarks and leptons in the Standard Model, and another modulus stabilized at Im <i>τ</i>₂ ∼ 15 can account for the flatness of the Re <i>τ</i>₂ direction which may be identified as the QCD axion.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)111.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bootstrapping the chiral-gravitational anomaly","authors":"Zi-Yu Dong,&nbsp;Teng Ma,&nbsp;Alex Pomarol,&nbsp;Francesco Sciotti","doi":"10.1007/JHEP05(2025)114","DOIUrl":"10.1007/JHEP05(2025)114","url":null,"abstract":"<p>We analyze causality and unitarity constraints in graviton scattering amplitudes, aiming to establish new bounds on theories with U(1)-gravitational anomalies, such as axion models or strongly-coupled gauge theories. For this purpose, we show the necessity of coupling these theories to gravity. We obtain a universal scale Λ_caus at which states with <i>J</i> ≥ 4 must appear in the theory. We show that this scale can lie below the quantum gravity scale. For axion models, we get Λ_caus ∼ <span>(sqrt{{M}_{P}{f}_{a}})</span> where <i>f</i>_<i>a</i> is the axion decay constant. In strongly-coupled gauge theories in the large-<i>N</i>_<i>c</i> limit, the presence of glueballs allows to evade these bounds, provided the number of fermions <i>N</i>_<i>F</i> ≪ <i>N</i>_<i>c</i> and the ’tHooft coupling is not large. Nevertheless, for models that have a holographic 5D dual (large ’tHooft coupling), Λ_caus emerges as a new cutoff scale, unless certain conditions on the parameters of the 5D models are satisfied.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 5","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP05(2025)114.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}