Physical Review D最新文献

{"title":"Signal-preserving CMB component separation with machine learning","authors":"Fiona McCarthy, J. Colin Hill, William R. Coulton, David W. Hogg","doi":"10.1103/physrevd.111.063549","DOIUrl":"https://doi.org/10.1103/physrevd.111.063549","url":null,"abstract":"Analysis of microwave sky signals, such as the cosmic microwave background, often requires component separation using multifrequency methods, whereby different signals are isolated according to their different frequency behaviors. Many so-called blind methods, such as the internal linear combination (ILC), make minimal assumptions about the spatial distribution of the signal or contaminants, and only assume knowledge of the frequency dependence of the signal. The ILC produces a minimum-variance linear combination of the measured frequency maps. In the case of Gaussian, statistically isotropic fields, this is the optimal linear combination, as the variance is the only statistic of interest. However, in many cases the signal we wish to isolate, or the foregrounds we wish to remove, are non-Gaussian and/or statistically anisotropic (in particular for the case of Galactic foregrounds). In such cases, it is possible that machine learning (ML) techniques can be used to exploit the non-Gaussian features of the foregrounds and thereby improve component separation. However, many ML techniques require the use of complex, difficult-to-interpret operations on the data. We propose a hybrid method whereby we train an ML model using only combinations of the data that , and combine the resulting ML-predicted foreground estimate with the ILC solution to reduce the error from the ILC. We demonstrate our methods on simulations of extragalactic temperature and Galactic polarization foregrounds and show that our ML model can exploit non-Gaussian features, such as point sources and spatially varying spectral indices, to produce lower-variance maps than ILC—e.g., reducing the variance of the B-mode residual by factors of up to 5—while preserving the signal of interest in an unbiased manner. Moreover, we often find improved performance even when applying our ML technique to foreground models on which it was not trained. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"66 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Classical and quantum chaos of closed strings on a charged confining holographic background","authors":"Bhaskar Shukla, Owais Riyaz, Subhash Mahapatra","doi":"10.1103/physrevd.111.066019","DOIUrl":"https://doi.org/10.1103/physrevd.111.066019","url":null,"abstract":"We discuss the classical and quantum chaos of closed strings on a recently constructed charged confining holographic background. The confining background corresponds to the charged soliton, which is a solution of minimal d</a:mi>=</a:mo>5</a:mn></a:math> gauged supergravity. The solution has a compact spacelike direction with a Wilson line on a circle and asymptotes to <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:msub><c:mi>AdS</c:mi><c:mn>5</c:mn></c:msub></c:math> with a planar boundary. For the classical case, we analyze the chaos using the power spectrum, Poincaré sections, and Lyapunov exponents, finding that both energy and charge play constructive effects on enhancing the chaotic nature of the system. We similarly analyze quantum chaos using the distribution of the spectrum’s level-spacing and out-of-time-ordered correlators and thoroughly investigate the effects of charge and energy. A gradual transition from a chaotic to an integrable regime is obtained as the energy and charge increase from lower to higher values, with charge playing a subdominant role. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"48 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143734050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probing light mediators with recent PandaX-4T low-energy electron recoil data","authors":"M. Demirci, M. F. Mustamin","doi":"10.1103/physrevd.111.055032","DOIUrl":"https://doi.org/10.1103/physrevd.111.055032","url":null,"abstract":"Neutrinos elastically scattered off atomic electrons offer a unique opportunity to probe the Standard Model (SM) and beyond SM physics. In this work, we examine the new physics effects of light mediators through elastic neutrino-electron scattering using solar neutrinos at the low energy range of PandaX-4T. These mediators, with a mass less than 1 GeV, are common properties of extensions to the SM. Accordingly, we consider universal light mediator models involving scalar, vector, and tensor interactions allowed by Lorentz invariance, and the anomaly-free U</a:mi>(</a:mo>1</a:mn>)</a:mo></a:mrow>′</a:mo></a:mrow></a:msup></a:mrow></a:math> extensions of the SM with a new vector mediator such as the <e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:msub><e:mi>L</e:mi><e:mi>e</e:mi></e:msub><e:mo>−</e:mo><e:msub><e:mi>L</e:mi><e:mi>μ</e:mi></e:msub></e:math>, <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:msub><g:mi>L</g:mi><g:mi>e</g:mi></g:msub><g:mo>−</g:mo><g:msub><g:mi>L</g:mi><g:mi>τ</g:mi></g:msub></g:math> and <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:msub><i:mi>L</i:mi><i:mi>μ</i:mi></i:msub><i:mo>−</i:mo><i:msub><i:mi>L</i:mi><i:mi>τ</i:mi></i:msub></i:math> gauge models in which the charges are exclusively leptonic. The new physics effects are analyzed by embedding each model into the SM process using solar neutrino flux. We obtain novel constraints on the coupling-mass plane of these models from the latest Run0 and Run1 datasets of the PandaX-4T experiment. We also compare our results with other limits derived from various terrestrial and astrophysical experiments. Our analysis results reveal more stringent limits in some regions of parameter space. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"72 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prospects for axion dark matter searches at LISA-like interferometers","authors":"Yue-Hui Yao, Tingyuan Jiang, Yong Tang","doi":"10.1103/physrevd.111.055031","DOIUrl":"https://doi.org/10.1103/physrevd.111.055031","url":null,"abstract":"Axion or axionlike particles are one of the leading candidates for dark matter. Because of its tiny coupling with photons, axion dark matter in the background can induce distinct phase velocities for light with different parity, an effect known as birefringence. Here, we propose a modification to the polarization state of the interspacecraft laser link in Laser Interferometer Space Antenna (LISA)-like interferometers to make them sensitive to this birefringence effect. We discuss the prospects of using the Sagnac combinations to search for axion dark matter and derive the corresponding sensitivity. With this setup, we show that next-generation laser interferometers in space would have promising sensitivities on the axion-photon coupling with axion mass around 10</a:mn></a:mrow>−</a:mo>19</a:mn></a:mrow></a:msup>−</a:mo>10</a:mn></a:mrow>−</a:mo>14</a:mn></a:mrow></a:msup></a:mtext></a:mtext>eV</a:mi></a:mrow></a:math>. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"11 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent B+→K+νν¯ excess and muon g−2 illuminating light dark sector with Higgs portal","authors":"Shu-Yu Ho, Jongkuk Kim, Pyungwon Ko","doi":"10.1103/physrevd.111.055029","DOIUrl":"https://doi.org/10.1103/physrevd.111.055029","url":null,"abstract":"The Belle II collaboration recently announced that they observed the B</a:mi>+</a:mo></a:msup>→</a:mo>K</a:mi>+</a:mo></a:msup>ν</a:mi>ν</a:mi>¯</a:mo></a:mover></a:math> decay process for the first time. However, their result encounters a <f:math xmlns:f=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><f:mrow><f:mn>2.7</f:mn><f:mi>σ</f:mi></f:mrow></f:math> deviation from the Standard Model (SM) calculation. Additionally, Fermilab released new data on muon <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:mi>g</h:mi><h:mo>−</h:mo><h:mn>2</h:mn></h:math> away from the SM expectation with <j:math xmlns:j=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><j:mn>5.1</j:mn><j:mi>σ</j:mi></j:math>. In this paper, we study the simplest UV-complete <l:math xmlns:l=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><l:mrow><l:mi mathvariant=\"normal\">U</l:mi><l:mo stretchy=\"false\">(</l:mo><l:mn>1</l:mn><l:msub><l:mrow><l:mo stretchy=\"false\">)</l:mo></l:mrow><l:mrow><l:msub><l:mrow><l:mi mathvariant=\"sans-serif\">L</l:mi></l:mrow><l:mrow><l:mi>μ</l:mi></l:mrow></l:msub><l:mo>−</l:mo><l:msub><l:mrow><l:mi mathvariant=\"sans-serif\">L</l:mi></l:mrow><l:mrow><l:mi>τ</l:mi></l:mrow></l:msub></l:mrow></l:msub></l:mrow></l:math>-charged complex scalar dark matter (DM) model. Thanks to the existence of light dark Higgs boson and light dark photon, we can explain the observed relic density of DM and resolve the results reported by both Belle II and Fermilab experiments simultaneously. As a by-product, the Hubble tension can be alleviated by taking <s:math xmlns:s=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><s:mrow><s:mi mathvariant=\"normal\">Δ</s:mi><s:msub><s:mrow><s:mi>N</s:mi></s:mrow><s:mrow><s:mi mathvariant=\"sans-serif\">eff</s:mi></s:mrow></s:msub><s:mo>≃</s:mo><s:mn>0.3</s:mn></s:mrow></s:math> induced by the light dark photon, which could be tested by CMB stage-4 and new NA64 experimental data in the near future. In addition, our light DM mass is highly testified by future data released by Belle II and CMB stage-4. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"121 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Building the case for forward muon detection at a muon collider","authors":"Maximilian Ruhdorfer, Ennio Salvioni, Andrea Wulzer","doi":"10.1103/physrevd.111.053010","DOIUrl":"https://doi.org/10.1103/physrevd.111.053010","url":null,"abstract":"We survey the opportunities offered by the detection of the forward muons that accompany the creation of neutral effective vector bosons at a muon collider, in different kinematic regimes. Vectors with relatively low energy produce the Higgs boson and the extended muon angular coverage enables studies of the Higgs properties, such as the measurement of the inclusive production cross section and the branching ratio to invisible final states. New heavy particles could be produced by vectors of higher energy, through Higgs portal interactions. If the new particles are invisible, the detection of the forward muons is essential in order to search for this scenario. The angular correlations of the forward muons are sensitive to the quantum interference between the vector-boson helicity amplitudes and can be exploited for the characterization of vector-boson scattering and fusion processes. This is illustrated by analyzing the C</a:mi>P</a:mi></a:math> properties of the Higgs coupling to the <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:mi>Z</c:mi></c:math> boson. Our findings provide a physics case and a set of benchmarks for the design of a dedicated forward muon detector. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"61 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing direct detection of Higgsino dark matter","authors":"Peter W. Graham, Harikrishnan Ramani, Samuel S. Y. Wong","doi":"10.1103/physrevd.111.055030","DOIUrl":"https://doi.org/10.1103/physrevd.111.055030","url":null,"abstract":"While much supersymmetric weakly interacting massive particle (WIMP) parameter space has been ruled out, one remaining important candidate is Higgsino dark matter. The Higgsino can naturally realize the “inelastic dark matter” scenario, where the scattering off a nucleus occurs between two nearly-degenerate states, making it invisible to WIMP direct detection experiments if the splitting is too large to be excited. It was realized that a “luminous dark matter” detection process, where the Higgsino upscatters in the Earth and subsequently decays into a photon in a large neutrino detector, offers the best sensitivity to such a scenario. We consider the possibility of adding a large volume of a heavy element, such as Pb or U, around the detector. We also consider the presence of U and Th in the Earth itself, and the effect of an enhanced high-velocity tail of the dark matter distribution due to the presence of the Large Magellanic Cloud. These effects can significantly improve the sensitivity of detectors such as JUNO, SNO</a:mi>+</a:mo></a:mrow></a:math>, KamLAND, and Borexino, potentially making it possible in the future to cover much of the remaining parameter space for this classic supersymmetric WIMP dark matter. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"183 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effective Lagrangian for strong and electromagnetic interactions of high-spin resonances","authors":"Sang-Ho Kim, Yongseok Oh, Sangyeong Son, S. Sakinah, Myung-Ki Cheoun","doi":"10.1103/physrevd.111.054031","DOIUrl":"https://doi.org/10.1103/physrevd.111.054031","url":null,"abstract":"Recent experiments of photon-nucleon and meson-nucleon scatterings have accumulated a lot of data for various meson production processes. One of the purposes of those experiments is to search for the missing resonances which were not discovered until now but whose existence was predicted by hadron models. The analyses of the data requires the development of dynamical coupled-channel models. Since several missing resonances are expected to have spin higher than 3</a:mn>/</a:mo>2</a:mn></a:math>, we need to include higher-spin resonances in dynamical coupled-channel models, which enable us to determine the couplings of effective Lagrangians of higher-spin baryons with pseudoscalar mesons or vector mesons. However, hadron models, such as quark models, give predictions only of the decay amplitudes of such baryons. Here we demonstrate the formalism of high-spin resonances and construct the relation between the coupling constants of effective Lagrangians and the partial decay widths that can be predicted by hadron models. This allows us to compare the coupling constants to the hadron model predictions not only in magnitude but in sign as well. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"183 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Gamma lines and dark matter from anomaly cancellation","authors":"Hridoy Debnath, Pavel Fileviez Pérez, Kevin González-Quesada","doi":"10.1103/physrevd.111.055027","DOIUrl":"https://doi.org/10.1103/physrevd.111.055027","url":null,"abstract":"We discuss a simple theory for physics beyond the Standard Model where a Majorana dark matter is predicted from anomaly cancellation. We discuss in detail the minimal theory where the baryon number is a local symmetry spontaneously broken at the low scale. The correlation between the cosmological constraints on the dark matter relic density, the direct detection and collider bounds is investigated. We discuss in great detail the gamma lines from dark matter annihilation showing the possibility to test these predictions in the near future at gamma-ray telescopes such as CTA. We investigate all processes contributing to the total photon flux from dark matter annihilation and point out the unique features that can be used to test this theory for dark matter. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"33 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flavoring the production of Higgs boson pairs","authors":"M. A. Arroyo-Ureña, J. Lorenzo Díaz-Cruz, E. A. Herrera-Chacón, T. A. Valencia-Pérez, J. Mejia Guisao","doi":"10.1103/physrevd.111.055028","DOIUrl":"https://doi.org/10.1103/physrevd.111.055028","url":null,"abstract":"We present a study on the possibility of observing a hypothetical particle known as the flavon H</a:mi>F</a:mi></a:msub></a:math>, which is predicted in an extension of the standard model that includes the so-called Froggatt-Nielsen mechanism. The proposed decay channel is through a <c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:mrow><c:mi>b</c:mi><c:mover accent=\"true\"><c:mrow><c:mi>b</c:mi></c:mrow><c:mrow><c:mo stretchy=\"false\">¯</c:mo></c:mrow></c:mover><c:mi>h</c:mi></c:mrow></c:math> final state, where the Higgs boson (<g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:mi>h</g:mi></g:math>) decays to a pair of photons or a pair of <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:mi>b</i:mi></i:math> quarks <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:mrow><k:mo stretchy=\"false\">(</k:mo><k:mi>h</k:mi><k:mo stretchy=\"false\">→</k:mo><k:mi>γ</k:mi><k:mi>γ</k:mi><k:mo>,</k:mo><k:mi>b</k:mi><k:mover accent=\"true\"><k:mrow><k:mi>b</k:mi></k:mrow><k:mrow><k:mo stretchy=\"false\">¯</k:mo></k:mrow></k:mover><k:mo stretchy=\"false\">)</k:mo></k:mrow></k:math>. We found that, under special scenarios of the model parameter space, the processes analyzed could provide evidence for the existence of the flavon in the next stage of the LHC: the High Luminosity LHC. Specifically, we predict a of <r:math xmlns:r=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><r:mn>5</r:mn><r:mi>σ</r:mi></r:math> (<t:math xmlns:t=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><t:mn>2</t:mn><t:mi>σ</t:mi></t:math>) in the <v:math xmlns:v=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><v:mi>h</v:mi><v:mo stretchy=\"false\">→</v:mo><v:mi>b</v:mi><v:mover accent=\"true\"><v:mi>b</v:mi><v:mo stretchy=\"false\">¯</v:mo></v:mover></v:math> (h</ab:mi>→</ab:mo>γ</ab:mi>γ</ab:mi></ab:math>) channel for a flavon mass of 800 (900) GeV and an integrated luminosity of 2500 <db:math xmlns:db=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><db:mrow><db:mo stretchy=\"false\">(</db:mo><db:mn>3000</db:mn><db:mo stretchy=\"false\">)</db:mo><db:mtext> </db:mtext><db:mtext> </db:mtext><db:msup><db:mrow><db:mi>fb</db:mi></db:mrow><db:mrow><db:mo>−</db:mo><db:mn>1</db:mn></db:mrow></db:msup></db:mrow></db:math>. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"16 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}