Physical Review D最新文献

{"title":"Understanding the nature of the Δ(1600) resonance","authors":"Liam Hockley, Curtis Abell, Derek Leinweber, Anthony Thomas","doi":"10.1103/physrevd.111.076027","DOIUrl":"https://doi.org/10.1103/physrevd.111.076027","url":null,"abstract":"We present a coupled-channel analysis of the J</a:mi>P</a:mi></a:msup>=</a:mo>3</a:mn>/</a:mo>2</a:mn>+</a:mo></a:msup>Δ</a:mi></a:math>-baryon spectrum, based in the framework of Hamiltonian effective field theory (HEFT). We construct a Hamiltonian which mixes quark model-like single-particle states and two-particle meson-baryon channels, and constrain this via phase shifts and inelasticities derived from <d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><d:mi>π</d:mi><d:mi>N</d:mi><d:mo stretchy=\"false\">→</d:mo><d:mi>π</d:mi><d:mi>N</d:mi></d:math> scattering data. In the same vein as Lüscher’s approach, we then connect this infinite-volume inspired Hamiltonian with finite-volume lattice quantum chromodynamics (QCD) results. Drawing on lattice correlation-matrix eigenvectors identifying the <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:mn>1</g:mn><g:mi>s</g:mi></g:math> and <i:math xmlns:i=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><i:mn>2</i:mn><i:mi>s</i:mi></i:math> states in the finite-volume <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:mi mathvariant=\"normal\">Δ</k:mi><k:mo stretchy=\"false\">(</k:mo><k:mn>3</k:mn><k:mo>/</k:mo><k:msup><k:mn>2</k:mn><k:mo>+</k:mo></k:msup><k:mo stretchy=\"false\">)</k:mo></k:math> spectrum, and utilizing the HEFT eigenvectors describing the composition of the energy eigenstates, we resolve the structure of these states and their relation to the <p:math xmlns:p=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><p:mi mathvariant=\"normal\">Δ</p:mi><p:mo stretchy=\"false\">(</p:mo><p:mn>1600</p:mn><p:mo stretchy=\"false\">)</p:mo></p:math> resonance. We find the dominant contributions to this resonance come from strong rescattering in the <u:math xmlns:u=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><u:mi>π</u:mi><u:mi>N</u:mi></u:math> and <w:math xmlns:w=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><w:mi>π</w:mi><w:mi mathvariant=\"normal\">Δ</w:mi></w:math> channels. This contrasts the long-held view of a dominant quark model-like core for the <z:math xmlns:z=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><z:mi mathvariant=\"normal\">Δ</z:mi><z:mo stretchy=\"false\">(</z:mo><z:mn>1600</z:mn><z:mo stretchy=\"false\">)</z:mo></z:math>. Further discussion of other contemporary lattice results for the <eb:math xmlns:eb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><eb:mi mathvariant=\"normal\">Δ</eb:mi></eb:math> spectrum and <hb:math xmlns:hb=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><hb:mi>π</hb:mi><hb:mi>N</hb:mi></hb:math> scattering states is also presented. <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":"40 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866334","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":"General one-loop generating function by integration-by-part relations","authors":"Chang Hu, Bo Feng, Jiyuan Shen, Yaobo Zhang","doi":"10.1103/physrevd.111.076026","DOIUrl":"https://doi.org/10.1103/physrevd.111.076026","url":null,"abstract":"In this paper, we have studied the general generating function of reduction for one-loop integrals with arbitrary tensor structure in the numerator and arbitrary power distribution of propagators in the denominator. Using integration-by-part relations, we have established the partial differential equations for these generating functions and solved them analytically with compact form. These results provide useful information for the analytical structure of reduction coefficients and guidance for applying the generating function method to reductions of higher loop integrals. <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":"37 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872897","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":"Efficient state preparation for the Schwinger model with a theta term","authors":"Alexei Bazavov, Brandon Henke, Leon Hostetler, Dean Lee, Huey-Wen Lin, Giovanni Pederiva, Andrea Shindler","doi":"10.1103/physrevd.111.074515","DOIUrl":"https://doi.org/10.1103/physrevd.111.074515","url":null,"abstract":"We present a comparison of different quantum state preparation algorithms and their overall efficiency for the Schwinger model with a theta term. While adiabatic state preparation is proved to be effective, in practice it leads to large gate counts to prepare the ground state. The quantum approximate optimization algorithm (QAOA) provides excellent results while keeping the counts small by design, at the cost of an expensive classical minimization process. We introduce a “blocked” modification of the Schwinger Hamiltonian to be used in the QAOA that further decreases the length of the algorithms as the size of the problem is increased. The rodeo algorithm (RA) provides a powerful tool to efficiently prepare any eigenstate of the Hamiltonian, as long as its overlap with the initial guess is large enough. We obtain the best results when combining the blocked QAOA ansatz and the RA, as this provides an excellent initial state with a relatively short algorithm without the need to perform any classical steps for large problem sizes. <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":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872890","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":"Thermonuclear diversity and the Hubble tension","authors":"Richard S. Miller","doi":"10.1103/physrevd.111.l081305","DOIUrl":"https://doi.org/10.1103/physrevd.111.l081305","url":null,"abstract":"Homogeneity is the hallmark of standard candle-based cosmology investigations. Thermonuclear supernovae (Type-Ia, SNeIa) violate this essential requirement if they develop along multiple evolutionary pathways. In this work, the impact of thermonuclear diversity on cosmological parameter constraints is quantified using Pantheon+, one of the largest ensembles of SNeIa compiled to probe cosmology to date. Evidence of diversity is encoded in supernova light curves. Pantheon+ is shown to be diverse, with features indicative of multiple thermonuclear subclasses. Diversity driven systematic effects have been quantified on a supernova-by-supernova basis; event selections based on light curve derived metrics were subsequently used to characterize diversity dependent trends and limit their impact. A diversity mitigated estimate of the Hubble-Lemaître parameter, H&lt;/a:mi&gt;0&lt;/a:mn&gt;&lt;/a:msub&gt;=&lt;/a:mo&gt;67.9&lt;/a:mn&gt;±&lt;/a:mo&gt;0.8&lt;/a:mn&gt;&lt;/a:mtext&gt;&lt;/a:mtext&gt;km&lt;/a:mi&gt;&lt;/a:mtext&gt;s&lt;/a:mi&gt;−&lt;/a:mo&gt;1&lt;/a:mn&gt;&lt;/a:mrow&gt;&lt;/a:msup&gt;&lt;/a:mtext&gt;Mpc&lt;/a:mi&gt;&lt;/a:mrow&gt;−&lt;/a:mo&gt;1&lt;/a:mn&gt;&lt;/a:mrow&gt;&lt;/a:msup&gt;&lt;/a:mrow&gt;&lt;/a:mrow&gt;&lt;/a:math&gt; (68% C.L.), was obtained by reanalyzing Pantheon+. The Hubble tension, an apparent disparity between early and late Universe determinations of &lt;d:math xmlns:d=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;d:msub&gt;&lt;d:mi&gt;H&lt;/d:mi&gt;&lt;d:mn&gt;0&lt;/d:mn&gt;&lt;/d:msub&gt;&lt;/d:math&gt;, is eased from &lt;f:math xmlns:f=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;f:mo&gt;∼&lt;/f:mo&gt;&lt;f:mn&gt;5&lt;/f:mn&gt;&lt;f:mi&gt;σ&lt;/f:mi&gt;&lt;/f:math&gt; to &lt;h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;h:mo&gt;&lt;&lt;/h:mo&gt;&lt;h:mn&gt;1&lt;/h:mn&gt;&lt;h:mi&gt;σ&lt;/h:mi&gt;&lt;/h:math&gt; after accounting for the diverse thermonuclear scenarios that govern SNeIa. Diversity mitigated subsets of Pantheon+ also show a &lt;j:math xmlns:j=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;j:mo&gt;∼&lt;/j:mo&gt;&lt;j:mrow&gt;&lt;j:mn&gt;3.4&lt;/j:mn&gt;&lt;j:mi&gt;σ&lt;/j:mi&gt;&lt;/j:mrow&gt;&lt;/j:math&gt; preference for a flat &lt;l:math xmlns:l=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;l:msub&gt;&lt;l:mi&gt;w&lt;/l:mi&gt;&lt;l:mn&gt;0&lt;/l:mn&gt;&lt;/l:msub&gt;&lt;l:msub&gt;&lt;l:mi&gt;w&lt;/l:mi&gt;&lt;l:mi&gt;a&lt;/l:mi&gt;&lt;/l:msub&gt;&lt;l:mi&gt;CDM&lt;/l:mi&gt;&lt;/l:math&gt; cosmology with dark energy equation of state parameters &lt;n:math xmlns:n=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"&gt;&lt;n:mrow&gt;&lt;n:mo stretchy=\"false\"&gt;(&lt;/n:mo&gt;&lt;n:msub&gt;&lt;n:mi&gt;w&lt;/n:mi&gt;&lt;n:mn&gt;0&lt;/n:mn&gt;&lt;/n:msub&gt;&lt;n:mo&gt;,&lt;/n:mo&gt;&lt;n:msub&gt;&lt;n:mi&gt;w&lt;/n:mi&gt;&lt;n:mi&gt;a&lt;/n:mi&gt;&lt;/n:msub&gt;&lt;n:mo stretchy=\"false\"&gt;)&lt;/n:mo&gt;&lt;n:mo&gt;=&lt;/n:mo&gt;&lt;n:mo stretchy=\"false\"&gt;(&lt;/n:mo&gt;&lt;n:mo&gt;−&lt;/n:mo&gt;&lt;n:mn&gt;1.084&lt;/n:mn&gt;&lt;n:mo&gt;±&lt;/n:mo&gt;&lt;n:mn&gt;0.180&lt;/n:mn&gt;&lt;n:mo&gt;,&lt;/n:mo&gt;&lt;n:mo&gt;−&lt;/n:mo&gt;&lt;n:mn&gt;2.066&lt;/n:mn&gt;&lt;n:mo&gt;±&lt;/n:mo&gt;&lt;n:mn&gt;0.675&lt;/n:mn&gt;&lt;n:mo stretchy=\"false\"&gt;)&lt;/n:mo&gt;&lt;/n:mrow&gt;&lt;/n:math&gt;. A strategy for precise SNeIa-derived cosmological inferences, dominated by statistical rather than systematic uncertainties, is also presented. &lt;jats:supplementary-material&gt; &lt;jats:copyright-statement&gt;Published by the American Physical Society&lt;/jats:copyright-statement&gt; &lt;jats:copyright-year&gt;2025&lt;/jats:copyright-year&gt; &lt;/jats:permissions&gt; &lt;/jats:suppleme","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"5 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866335","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":"Nonperturbative quantum gravity denounces singular black holes","authors":"Alexey S. Koshelev, Anna Tokareva","doi":"10.1103/physrevd.111.086026","DOIUrl":"https://doi.org/10.1103/physrevd.111.086026","url":null,"abstract":"General relativity predicts the presence of a singularity inside of a black hole revealing that it is not a complete theory of gravity. A real structure of a black hole interior near an expected singularity depends on the UV completion of gravity. In this paper we address the question of whether singular spherically symmetric solutions are absent (or present) in a complete gravity theory. We find that the answer is governed by the functional form of a nonperturbative graviton propagator. A ghost-free infinite derivative gravity is favored by the unitarity the graviton propagator of an exponential form. We explicitly show in this framework that a singularity is not possible unless an unphysical situation when a mass of the black hole is infinite is considered. <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":"70 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866340","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":"What happens to topological invariants and black holes in singularity-free theories?","authors":"Jens Boos","doi":"10.1103/physrevd.111.084063","DOIUrl":"https://doi.org/10.1103/physrevd.111.084063","url":null,"abstract":"Potentials arising in ultraviolet-completed field theories can be devoid of singularities, and hence render spacetimes simply connected. This challenges the notion of topological invariants considered in such scenarios. We explore the classical implications for (i) electrodynamics in flat spacetime, (ii) ultrarelativistic gyratonic solutions of weak-field gravity, and (iii) the Reissner-Nordström black hole in general relativity. In linear theories, regularity spoils the character of topological invariants and leads to radius-dependent Aharonov-Bohm phases, which are potentially observable for large winding numbers. In general relativity, the physics is richer: The electromagnetic field can be regular and maintain its usual topological invariants, and the resulting geometry can be interpreted as a Reissner-Nordström black hole with a spacetime region of coordinate radius ∼</a:mo>q</a:mi></a:mrow>2</a:mn></a:mrow></a:msup>/</a:mo>(</a:mo>G</a:mi>M</a:mi>)</a:mo></a:mrow></a:math> cut out. This guarantees the regularity of linear and quadratic curvature invariants (<e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mi mathvariant=\"script\">R</e:mi></e:math> and <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:msup><h:mi mathvariant=\"script\">R</h:mi><h:mn>2</h:mn></h:msup></h:math>), but does not resolve singularities in invariants such as <k:math xmlns:k=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><k:mrow><k:msup><k:mrow><k:mi mathvariant=\"script\">R</k:mi></k:mrow><k:mrow><k:mi>p</k:mi></k:mrow></k:msup><k:msup><k:mrow><k:mo>□</k:mo></k:mrow><k:mrow><k:mi>n</k:mi></k:mrow></k:msup><k:msup><k:mrow><k:mi mathvariant=\"script\">R</k:mi></k:mrow><k:mrow><k:mi>q</k:mi></k:mrow></k:msup></k:mrow></k:math>, reflected by conical or solid angle defects. This motivates that gravitational models beyond general relativity need to be considered. These connections between regularity (= UV properties of field theories) and topological invariants (= IR observables) may hence present an intriguing avenue to search for traces of new physics and identify promising modified gravity theories. <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":"20 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866344","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":"Complex classical paths in quantum reflections and tunneling","authors":"Job Feldbrugge, Dylan L. Jow, Ue-Li Pen","doi":"10.1103/physrevd.111.085027","DOIUrl":"https://doi.org/10.1103/physrevd.111.085027","url":null,"abstract":"The real-time propagator of the symmetric Rosen-Morse, also known as the symmetric modified Pöschl-Teller, barrier is expressed in the Picard-Lefschetz path integral formalism using real and complex classical paths. We explain how the interference pattern in the real-time propagator and energy propagator is organized by caustics and Stokes phenomena and list the relevant real and complex classical paths as a function of the initial and final position. We discover the occurrence of singularity crossings, where the analytic continuation of the complex classical path no longer satisfies the boundary value problem and needs to be analytically continued. Moreover, we demonstrate how these singularity crossings play a central role in the real-time description of quantum tunneling. <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":"108 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866337","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":"Fermion masses and mixings in string theory with Dirac neutrinos","authors":"Mudassar Sabir, Adeel Mansha, Tianjun Li, Zhi-Wei Wang","doi":"10.1103/physrevd.111.l071702","DOIUrl":"https://doi.org/10.1103/physrevd.111.l071702","url":null,"abstract":"Analyzing the supersymmetric Pati-Salam landscape on a T</a:mi></a:mrow>6</a:mn></a:mrow></a:msup>/</a:mo>(</a:mo>Z</a:mi></a:mrow>2</a:mn></a:mrow></a:msub>×</a:mo>Z</a:mi></a:mrow>2</a:mn></a:mrow></a:msub>)</a:mo></a:mrow></a:math> orientifold in IIA string theory, we have found only two models that accurately account for all standard model fermion masses and mixings. The models are dual to each other under the exchange of two SU(2) sectors and feature 12 adjoint scalars, the maximum number allowed in the landscape, whose linear combination yields the two light Higgs eigenstates. Dirac neutrino masses in normal ordering of <h:math xmlns:h=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><h:mrow><h:mo stretchy=\"false\">(</h:mo><h:mn>50.6</h:mn><h:mo>,</h:mo><h:mn>10.6</h:mn><h:mo>,</h:mo><h:mn>6.2</h:mn><h:mo stretchy=\"false\">)</h:mo><h:mo>±</h:mo><h:mn>0.1</h:mn><h:mtext> </h:mtext><h:mtext> </h:mtext><h:mi>meV</h:mi></h:mrow></h:math> satisfy both the experimental as well as swampland constraints. <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":"17 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866339","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":"Higgs boson precision analysis of two-Higgs-doublet models: Full LHC run 1 and run 2 data","authors":"Yongtae Heo, Jae Sik Lee, Chan Beom Park","doi":"10.1103/physrevd.111.075026","DOIUrl":"https://doi.org/10.1103/physrevd.111.075026","url":null,"abstract":"We present the results obtained by performing global fits of two-Higgs-doublet models (2HDMs) using the full Run 1 and Run 2 Higgs datasets collected at the LHC. Avoiding unwanted tree-level flavor-changing neutral currents and including the wrong-sign cases, we consider 12 scenarios across six types of 2HDMs: Inert, type I, type II, type III, type IV, and aligned 2HDMs. Our main results are presented in Table III and Fig. 1. We find that the type-I 2HDM provides the best fit, while the wrong-sign scenarios of the type-II and type-IV 2HDMs, where the normalized Yukawa coupling to down-type quarks is opposite in sign to the Standard Model (SM), are disfavored. We also observe that the aligned 2HDM gives the second-best fit when the Yukawa couplings to down-type quarks take the same sign as in the SM, regardless of the sign of the Yukawa couplings to the charged leptons. <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":"4 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866343","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":"Masquerading hybrid stars with dark matter","authors":"Carline Biesdorf, Jürgen Schaffner-Bielich, Laura Tolos","doi":"10.1103/physrevd.111.083038","DOIUrl":"https://doi.org/10.1103/physrevd.111.083038","url":null,"abstract":"We investigate the influence of dark matter on hybrid stars. Using a two-fluid approach, where normal and dark matter components interact only gravitationally, we explore how dark matter can trigger the appearance of quark matter in neutron stars for unprecedented low masses. Our findings reveal that dark matter increases the central pressure of neutron stars, potentially leading to the formation of hybrid stars with quark cores even at very low compact star masses. The critical mass for the appearance of quark matter decreases with increasing dark matter content. We introduce the concept of “masquerading hybrid stars,” where dark matter admixed stars exhibit similar mass-radius relations to purely hadronic stars, making it challenging to distinguish between them based solely on these parameters. Additionally, we identify a unique class of objects termed “dark oysters,” characterized by a large dark matter halo and a small normal matter core, highlighting the diverse structural possibilities for compact stars influenced by 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":"31 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866345","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}