Journal of High Energy Physics最新文献

{"title":"cymyc: Calabi-Yau Metrics, Yukawas, and Curvature","authors":"Giorgi Butbaia,&nbsp;Damián Mayorga Peña,&nbsp;Justin Tan,&nbsp;Per Berglund,&nbsp;Tristan Hübsch,&nbsp;Vishnu Jejjala,&nbsp;Challenger Mishra","doi":"10.1007/JHEP03(2025)028","DOIUrl":"10.1007/JHEP03(2025)028","url":null,"abstract":"<p>We introduce cymyc, a high-performance Python library for numerical investigation of the geometry of a large class of string compactification manifolds and their associated moduli spaces. We develop a well-defined geometric ansatz to numerically model tensor fields of arbitrary degree on a large class of Calabi-Yau manifolds. cymyc includes a machine learning component which incorporates this ansatz to model tensor fields of interest on these spaces by finding an approximate solution to the system of partial differential equations they should satisfy.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)028.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553809","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":"Chern-Simons induced thermal friction on axion domain walls","authors":"Saquib Hassan,&nbsp;Gaurang Ramakant Kane,&nbsp;John March-Russell,&nbsp;Georges Obied","doi":"10.1007/JHEP03(2025)022","DOIUrl":"10.1007/JHEP03(2025)022","url":null,"abstract":"<p>We study the dynamics and interactions of the solitonic domain walls that occur in realistic axion electrodynamics models including the Chern-Simons interaction, <i>aϵ</i>_{<i>μνλσ</i>}<i>F</i> ^<i>μν</i><i>F</i> ^<i>λσ</i>, between an axion <i>a</i>(<i>x</i>) of mass <i>m</i>_<i>a</i>, and a massless U(1) gauge field, e.g. EM, interacting with strength <i>α</i> = <i>e</i>²/4<i>π</i> with charged matter, e.g. electron-positron pairs. In particular, in the presence of a U(1) gauge-and-matter relativistic thermal plasma we study the friction experienced by the walls due to the Chern-Simons term. Utilizing the linear response method we include the collective effects of the plasma, as opposed to purely particle scattering across the wall (as is done in previous treatments) which is valid only in the thin wall regime that is rarely applicable in realistic cases. We show that the friction depends on the Lorentz-<i>γ</i>-factor-dependent inverse thickness of the wall in the plasma frame, <i>ℓ</i>⁻¹ ~ <i>γm</i>_<i>a</i>, compared to the three different plasma scales, the temperature <i>T</i>, the Debye mass <i>m</i>_<i>D</i> ~ <span>( sqrt{alpha }T )</span>, and the damping rate Γ ~ <i>α</i>²<i>T</i>, and elucidate the underlying physical intuition for this behavior. (For friction in the thin-wall-limit we correct previous expressions in the literature.) We further consider the effects of long-range coherent magnetic fields that are possibly present in the early universe and compare their effect with that of thermal magnetic fields. We comment on the changes to our results that likely apply in the thermal deconfined phase of a non-Abelian gauge theory. Finally, we briefly discuss the possible early universe consequences of our results for domain wall motion and network decay, stochastic gravitational wave production from domain wall networks, and possible primordial black hole production from domain wall collapse, though a more complete discussion of these topics is reserved for a companion paper.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)022.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564386","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":"Grassmann tensor renormalization group approach to (1+1)-dimensional two-color lattice QCD at finite density","authors":"Kwok Ho Pai,&nbsp;Shinichiro Akiyama,&nbsp;Synge Todo","doi":"10.1007/JHEP03(2025)027","DOIUrl":"10.1007/JHEP03(2025)027","url":null,"abstract":"<p>We construct a Grassmann tensor network representing the partition function of (1+1)-dimensional two-color QCD with staggered fermions. The Grassmann path integral is rewritten as the trace of a Grassmann tensor network by introducing two-component auxiliary Grassmann fields on every edge of the lattice. We introduce an efficient initial tensor compression scheme to reduce the size of initial tensors. The Grassmann bond-weighted tensor renormalization group approach is adopted to evaluate the quark number density, fermion condensate, and diquark condensate at different gauge couplings as a function of the chemical potential. Different transition behavior is observed as the quark mass is varied. We discuss the efficiency of our initial tensor compression scheme and the future application toward the corresponding higher-dimensional models.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)027.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564390","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":"Vector-Like Quarks at the LHC: A unified perspective from ATLAS and CMS exclusion limits","authors":"R. Benbrik,&nbsp;M. Boukidi,&nbsp;M. Ech-chaouy,&nbsp;S. Moretti,&nbsp;K. Salime,&nbsp;Q. S. Yan","doi":"10.1007/JHEP03(2025)020","DOIUrl":"10.1007/JHEP03(2025)020","url":null,"abstract":"<p>In this work, we present a comprehensive review of the most up-to-date exclusion limits on Vector-Like Quarks (VLQs) derived from ATLAS and CMS data at the Large Hadron Collider (LHC). Our analysis encompasses both pair and single production modes, systematically comparing results from the two collaborations to identify and employ the most stringent bounds at each mass point. We evaluate the excluded parameter space for VLQs under singlet, doublet, and triplet representations. For top-like VLQs (<i>T</i>), the exclusion limits rule out masses up to 1.49 TeV in singlet scenarios, while single production constrains the mixing parameter <i>κ</i> to values below 0.26 at <i>m</i>_<i>T</i> ~ 1<i>.</i>5 TeV and up to 0.42 for <i>m</i>_<i>T</i> ~ 2 TeV. For bottom-like VLQs (<i>B</i>), the strongest exclusion limits from pair production exclude masses up to 1.52 TeV in doublet configurations, with single production constraining <i>κ</i> values between 0.2 and 0.7 depending on the mass. For exotic VLQs, such as <i>X</i> and <i>Y</i>, pair production excludes masses up to 1.46 TeV and 1.7 TeV, respectively. The constraints on <i>κ</i> from these analyses become increasingly restrictive at higher masses, reflecting the enhanced sensitivity of single production channels in this regime. For <i>X</i>, <i>κ</i> is constrained below 0.16 for masses between 0.8 and 1.6 TeV and further tightens to <i>κ</i> &lt; 0<i>.</i>2 as the mass approaches 1.8 TeV. Similarly, for <i>Y</i>, <i>κ</i> values are constrained below 0.26 around <i>m</i>_<i>Y</i> ~ 1.7 TeV, with exclusions gradually relaxing at higher masses. These exclusion regions, derived from the most stringent LHC search results, offer a unified and up-to-date perspective on VLQ phenomenology. The results were computed using VLQBounds, a new Python-based tool specifically developed for this purpose.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)020.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564388","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":"Bubble-wall speed with loop corrections","authors":"Andrii Dashko,&nbsp;Andreas Ekstedt","doi":"10.1007/JHEP03(2025)024","DOIUrl":"10.1007/JHEP03(2025)024","url":null,"abstract":"<p>In this paper, we investigate the dynamics of the nucleating scalar field during the first-order phase transitions by incorporating one-loop corrections of classical fluctuations. We assume that a high-temperature expansion is valid — where the mass of the scalar field is significantly smaller than the temperature — so that we can treat the bubble-wall dynamics in a regime where quantum fluctuations can be integrated out. We present a systematic framework for calculating classical loop corrections to the wall speed; contrast our results with traditional methods based on the derivative expansion; show that the latent heat can differ from the effective-potential result; and discuss general hydrodynamic corrections. Finally, we show an application of the presented framework for a simple scalar field model, finding that the one-loop improvement decreases the wall speed and that an effective-potential approximation underestimates full one-loop corrections by about a factor of two.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)024.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553991","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":"Generalised-edged quivers and global forms","authors":"Julius F. Grimminger,&nbsp;William Harding,&nbsp;Noppadol Mekareeya","doi":"10.1007/JHEP03(2025)021","DOIUrl":"10.1007/JHEP03(2025)021","url":null,"abstract":"<p>Non-simply laced quivers, despite the lack of complete Lagrangian descriptions, play an important role in characterising moduli spaces of supersymmetric field theories. Notably, the moduli space of instantons in non-simply laced gauge groups can be understood by means of such quivers. We generalise the notion of non-simply laced unitary quivers to those whose edges carry two labels (<i>p</i>, <i>q</i>), dubbed (<i>p</i>, <i>q</i>)-edged quivers. The special case of (<i>p</i>, 1) corresponds to a conventional non-simply laced edge studied in the literature. In the case of unframed (<i>p</i>, <i>q</i>)-edged quivers, we show how to parametrise the lattice of magnetic fluxes upon ungauging the decoupled U(1), and how one can pick sublattices thereof corresponding to different global forms of the quiver related by discrete gauging. This form of discrete gauging can be applied to any unframed unitary quivers, not just ones with generalised edges. We utilise both the Hilbert series and the superconformal index to study moduli spaces and ’t Hooft anomalies. In particular, we study mixed ’t Hooft anomalies between a one-form symmetry and a zero-form continuous topological symmetry in various (<i>p</i>, <i>q</i>)-edged quivers. We also provide an alternative realisation of the moduli space of <span>( mathfrak{so}left(2n+1right) )</span> instantons via gauging discrete symmetries in supersymmetric QCD with a symplectic gauge group and a large number of flavours.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)021.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553992","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":"Investigating vector-like leptons decaying into an electron and missing transverse energy in e+ e− collisions with ( sqrt{s} ) = 500 GeV at the ILC","authors":"Y. Mahmoud,&nbsp;J. Kawamura,&nbsp;H. Abdallah,&nbsp;M. T. Hussein,&nbsp;S. Elgammal","doi":"10.1007/JHEP03(2025)001","DOIUrl":"10.1007/JHEP03(2025)001","url":null,"abstract":"<p>This analysis focuses on probing the lepton portal dark matter using Monte Carlo simulated samples from electron-positron collisions at the International Linear Collider (ILC) of 500 GeV center of mass energy with an integrated luminosity of 1000 fb⁻¹. The study examines a benchmark scenario where the dark matter is a scalar particle produced as a daughter particle of the vector-like lepton. The signal topology consists of missing transverse energy and dilepton. If no new physics is discovered, the study sets 95% confidence level exclusion limits on the mass of vector-like leptons.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)001.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553762","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 neutrino mass bound from leptogenesis revisited","authors":"Björn Garbrecht,&nbsp;Edward Wang","doi":"10.1007/JHEP03(2025)008","DOIUrl":"10.1007/JHEP03(2025)008","url":null,"abstract":"<p>Recent years have seen a great improvement in the computation of <i>CP</i>-conserving and <i>CP</i>-violating equilibration rates for leptogenesis. These are relevant for the relativistic regime of the sterile Majorana fermions and the dynamics of the Standard Model particles acting as spectator processes. In order to probe the regime of large (<span>( mathcal{O} )</span>(10²)) washout parameters, we add ∆<i>L</i> = 2 washout processes, which we derive in the CTP-formalism. To demonstrate their significance, we apply state-of-the-art computational techniques to a simple yet well-motivated phenomenological scenario: unflavored leptogenesis in a hierarchical type-I seesaw model. We then perform a parameter scan of the final baryon asymmetry and find a constraint <i>m</i>_lightest ≲ 0.15 eV on the absolute neutrino mass scale, which is slightly less stringent than previously reported bounds obtained without the aforementioned improvements. The relaxation of the bounds is mainly due to partially equilibrated spectator fields, which protect part of the asymmetry from washout and lead to larger final asymmetries. While this might seem like a minor correction, the actual dynamics of the fields is substantially altered by these effects. Even though we focused on a particularly simple scenario for leptogenesis, the methods employed here can and should be extended to other models, thus giving us a more accurate picture of the different leptogenesis scenarios.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)008.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554044","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":"Notes on selection rules of canonical differential equations and relative cohomology","authors":"Jiaqi Chen,&nbsp;Bo Feng","doi":"10.1007/JHEP03(2025)009","DOIUrl":"10.1007/JHEP03(2025)009","url":null,"abstract":"<p>We give an explanation of the d log-form of the coefficient matrix of canonical differential equations using the projection of (<i>n</i>+1)-d log forms onto <i>n</i>-d log forms. This projection is done using the leading-order formula for intersection numbers. This formula gives a simple way to compute the coefficient matrix. When combined with the relative twisted cohomology, redundancy in computation using the regulator method can be avoided.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)009.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553641","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":"GKZ hypergeometric systems of the four-loop vacuum Feynman integrals","authors":"Hai-Bin Zhang,&nbsp;Tai-Fu Feng","doi":"10.1007/JHEP03(2025)013","DOIUrl":"10.1007/JHEP03(2025)013","url":null,"abstract":"<p>Basing on Mellin-Barnes representations and Miller’s transformation, we present the Gel’fand-Kapranov-Zelevinsky (GKZ) hypergeometric systems of 4-loop vacuum Feynman integrals with arbitrary masses. Through the GKZ hypergeometric systems, the analytical hypergeometric solutions of 4-loop vacuum Feynman integrals with arbitrary masses can be obtained in neighborhoods of origin including infinity. The analytical expressions of Feynman integrals can be formulated as a linear combination of the fundamental solution systems in certain convergent region, which the combination coefficients can be determined by the integral at some regular singularities, the Mellin-Barnes representation of the integral, or some mathematical methods.</p>","PeriodicalId":635,"journal":{"name":"Journal of High Energy Physics","volume":"2025 3","pages":""},"PeriodicalIF":5.4,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/JHEP03(2025)013.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553761","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}