We study the new $Z'$ boson as a portal for the production of Higgs bosons $h_0$ and $H_0$ predicted by the Bestest Little Higgs Model through Higgs-strahlung processes $\mu^+\mu^- \to (Z, Z') \to Zh_0, ZH_0$ . We focus on the resonant and nonresonant effects of the $Zh_0, ZH_0$ signals. In our analysis, we consider the center-of-mass energies of $\sqrt{s}=3, 4, 6, 10, 30$ TeV and integrated luminosities of ${\cal{L}}=2, 4, 6, 10, 30$ ${ {\rm{ab}}^{-1}}$ projected for a future muon collider. The possibility of performing precision measurements for Higgs bosons $h_0$ and $H_0$ is very promising for the future muon collider. Furthermore, our results may be useful to the High Energy Physics community. Complementarily, we generate and provide the Feynman rules necessary for studying processes $\mu^+\mu^- \to (Z, Z') \to Zh_0, ZH_0$ .

J.M. Martínez-Martínez

A. Gutiérrez-Rodríguez

E. Cruz-Albaro

M.A. Hernández-Ruíz

New $\textit{Z}$' boson of the bestest little Higgs model as a portal to signatures of Higgs bosons $\textit{h}$ $_{0}$ and $\textit{H}$ $_{0}$ at the future muon collider

We present a novel way to probe inelastic dark matter using cosmic-ray (CR) cooling in active galactic nuclei (AGNs). Dark matter (DM) in the vicinity of supermassive black holes may scatter off CRs, resulting in the rapid cooling of CRs for sufficiently large cross sections. This in turn can alter the high-energy neutrino and gamma-ray fluxes detected from these sources. We show that AGN cooling bounds obtained through the multimessenger data of NGC 1068 and TXS <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mn>0506</mn><mo>+</mo><mn>056</mn></mrow></math> allows us to reach unprecedently large mass splittings for inelastic DM (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo>≳</mo><mi>TeV</mi></math>), orders of magnitude larger than those probed by direct detection experiments and DM capture in neutron stars. Furthermore, we demonstrate that cooling bounds from AGNs can probe thermal light DM with small mass splittings. This provides novel and complementary constraints in parts of a parameter space accessible solely by colliders and beam-dump experiments.

United States

Japan

R. Andrew Gustafson

Gonzalo Herrera

Mainak Mukhopadhyay

Kohta Murase

Ian M. Shoemaker

Cosmic-ray cooling in active galactic nuclei as a new probe of inelastic dark matter

We study the impact of the non-holomorphic (NH) soft supersymmetry-breaking terms <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msubsup><mrow><mi>T</mi></mrow><mrow><mn>33</mn></mrow><mrow><mo>′</mo><mi>D</mi></mrow></msubsup></mrow></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>μ</mi><mo>′</mo></msup></math>, which introduce additional supersymmetry-breaking effects beyond the holomorphic structure of the superpotential, on the Higgs boson mass spectrum in the NH Minimal Supersymmetric Standard Model. The term <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>T</mi><mn>33</mn><mrow><mo>′</mo><mi>D</mi></mrow></msubsup></math> modifies the scalar bottom-quark mass matrix and Higgs couplings, while <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>μ</mi><mo>′</mo></msup></math> affects the mass matrices of charginos and neutralinos. In our analysis, we incorporate constraints from charge- and color-breaking minima where we find that a portion of the parameter space is excluded by these constraints. Focusing on the allowed parameter space, the NH contributions to the light <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi mathvariant="script">C</mi><mi mathvariant="script">P</mi></mrow></math>-even Higgs boson mass <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><mi>h</mi></msub></math> from <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>μ</mi><mo>′</mo></msup></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>T</mi><mn>33</mn><mrow><mo>′</mo><mi>D</mi></mrow></msubsup></math> can reach up to 1.4 GeV and 90 MeV, respectively. For the heavy <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi mathvariant="script">C</mi><mi mathvariant="script">P</mi></mrow></math>-even Higgs boson mass <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><mi>H</mi></msub></math> and the charged Higgs boson mass <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><msup><mi>H</mi><mo>±</mo></msup></msub></math>, these contributions can be substantially larger in certain regions of the parameter space, reaching up to 44 GeV for <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><mi>H</mi></msub></math> and 42 GeV for <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><msup><mi>H</mi><mo>±</mo></msup></msub></math> due to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>μ</mi><mo>′</mo></msup></math> and up to 60 GeV due to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>T</mi><mn>33</mn><mrow><mo>′</mo><mi>D</mi></mrow></msubsup></math> for both <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><mi>H</mi></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>M</mi><msup><mi>H</mi><mo>±</mo></msup></msub></math>. These corrections are significantly larger than the expected future experimental precision for Higgs boson masses and should therefore be considered in precision analyses for future experiments.

Pakistan

M. Rehman

Spain

S. Heinemeyer

Toward a refined understanding of nonholomorphic soft SUSY-breaking effects on the Higgs boson mass spectra

We propose the possibility of using the near detector at reactor neutrino experiments to probe the renormalization group (RG) running effect on the leptonic Dirac <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>C</mi><mi>P</mi></math> phase <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>δ</mi><mi>D</mi></msub></math>. Although the reactor neutrino oscillation cannot directly measure <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>δ</mi><mi>D</mi></msub></math>, it can probe the deviation <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><mi>δ</mi><mo>≡</mo><msub><mi>δ</mi><mi>D</mi></msub><mo stretchy="false">(</mo><msubsup><mi>Q</mi><mi>d</mi><mn>2</mn></msubsup><mo stretchy="false">)</mo><mo>−</mo><msub><mi>δ</mi><mi>D</mi></msub><mo stretchy="false">(</mo><msubsup><mi>Q</mi><mi>p</mi><mn>2</mn></msubsup><mo stretchy="false">)</mo></math> caused by the RG running. Being a key element, the mismatched momentum transfers at neutrino production (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>Q</mi><mi>p</mi><mn>2</mn></msubsup></math>) and detection (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mi>Q</mi><mi>d</mi><mn>2</mn></msubsup></math>) processes can differ by two orders. We illustrate this concept with the upcoming Taishan Antineutrino Observatory (TAO, also known as JUNO-TAO) experiment and obtain the projected sensitivity to the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>C</mi><mi>P</mi></math> RG running beta function <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>β</mi><mi>δ</mi></msub></math>.

China

Shao-Feng Ge

Chui-Fan Kong

Brazil

Pedro Pasquini

Testing the RG running of the leptonic Dirac <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>C</mi><mi>P</mi></math> phase with reactor neutrinos

The decay of the $\textit{Z}$ boson into axion-like particles (ALP) at the $\textit{Z}$-pole run of the proposed CERN FCC-ee collider is investigated. We perform a detailed study of final states with three photons or with a single photon and missing energy, yielding an evaluation of the accessible values of the ALP coupling to the photon for ALP masses between 0.1 and 85 GeV. Special attention is paid to the experimental implications of detecting the three-photon signature for the ALP mass region below 10 GeV. The FCC-ee run will be able to detect the ALP for couplings down to a few 10 TeV over the considered mass range in an effective model where the ALP only couples to the U(1) boson of the Standard Model.

Italy

G. Polesello

Sensitivity of the FCC-ee to decay of an axion-like particle into two photons

We consider constraints on the axion-photon coupling by superradiance due to a plasma instability in the magnetospheres of millisecond pulsars. We compute the growth rate of a superradiant axion cloud in a dipole magnetic field, and give a semianalytical formula for the superradiance rate for the lowest state. By requiring the associated instability time to be longer than the characteristic age of the supermassive black-widow millisecond pulsar PSR J0952-0607, we examine the pulsar-timing array constraints on axions of mass <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo>∼</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>12</mn></mrow></msup><mtext> </mtext><mtext> </mtext><mi>eV</mi></math>. We find that competitive axion bounds from plasma instabilities are unlikely unless a new high spin pulsar is discovered.

Finland

Topi Sirkiä

Matti Heikinheimo

Kimmo Tuominen

Axion superradiance in dipole magnetic fields of pulsars

We study the confining and deconfining phases of pure SU(3) lattice gauge theory with topological data analysis. This provides unique insights into long range correlations of field configurations across the confinement-deconfinement transition. Specifically, we analyze nontrivial structures in electric and magnetic field energy densities as well as Polyakov loop traces and a Polyakov loop-based variant of the topological density. The Betti curves for filtrations based on the electric and magnetic field energy densities reveal signals of electromagnetic dualities. These dualities can be associated with an interchange in the roles of local lumps of electric and magnetic energy densities around the phase transition. Moreover, we show that plaquette susceptibilities can manifest in the geometric features captured by the Betti curves. We also compare these findings against earlier results for SU(2) and elaborate on the significant differences. Our results demonstrate that topological data analysis can identify clear differences between phase transitions of first and second order for non-Abelian lattice gauge theories and provides unprecedented insights into the relevant structures in their vicinity.

Germany

Daniel Spitz

Julian M. Urban

Jan M. Pawlowski

Topological data analysis of the deconfinement transition in SU(3) lattice gauge theory

Obtaining the classification of three-dimensional (3D) <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="script">N</mi><mo>=</mo><mn>4</mn></math> quivers whose Coulomb branches have an isolated singularity is an essential step in understanding moduli spaces of vacua of supersymmetric field theories with eight supercharges in any dimension. In this work, we derive a full classification for such Abelian quivers with arbitrary charges and identify all possible Coulomb branch geometries as quotients of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi mathvariant="double-struck">H</mi><mi>n</mi></msup></math> by U(1) or a finite cyclic group. We give two proofs, one which uses the “decay and fission” algorithm and another one relying only on explicit computations involving 3D mirror symmetry. In the process, we put forward a method for computing the 3D mirror of any <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">U</mi><mo stretchy="false">(</mo><mn>1</mn><msup><mo stretchy="false">)</mo><mi>r</mi></msup></math> gauge theory, which is sensitive to discrete gauge factors in the mirror theory. This constitutes a confirmation for the decay and fission algorithm.

France

Antoine Bourget

Quentin Lamouret

Austria

Sinan Moura Soysüren

Marcus Sperling

Classification of minimal Abelian Coulomb branches

In this work, we impose observational constraints on the thermodynamics-gravity conjecture, based on the modified Tsallis entropy, known as Tsallis cosmology, within the context of the Cosmographic approach. We utilize the latest observational datasets from DESI BAO 2024 and the PantheonPlus sample of SNIa. For comparison, we conduct our analysis using the standard flat- $$\varLambda $$ CDM cosmology as the concordance model. Our cosmographic analysis reveals that both models exhibit good consistency with observations when utilizing the DESI BAO dataset and the PantheonPlus SNIa sample. Additionally, the combination of DESI BAO and PantheonPlus observations demonstrates full consistency between the models and the Cosmographic approach, provided there is no external prior on the sound horizon of baryons at the drag epoch, $$r_d$$ . When incorporating the Planck prior on $$r_d$$ , our analysis supports notable deviations of the Tsallis and $$\varLambda $$ CDM models from the confidence bands of the Cosmographic approach. These deviations can be directly related to this physical fact that cosmological models like Tsallis and $$\varLambda $$ CDM can not fit the low-redshift SNIa data calibrated by Cepheid observations and DESI BAO observations with an external high-redshift CMB prior on $$r_d$$ , simultaneously.

Iran

N. Shahhoseini

M. Malekjani

A. Khodam-Mohammadi

Thermodynamics-gravity conjecture in the context of cosmography: observational constraints and potential deviations

A systematic analysis of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>K</mi><mo>*</mo></msup><mi mathvariant="normal">Σ</mi></math> photoproduction off proton is performed with all the available differential cross section data. We carry out a strategy different from the previous studies of these reactions, where, instead of fixing the parameters of the added resonances from PDG or pentaquark models, we add the resonance with a specific <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>J</mi><mi>P</mi></msup></math> and leave its parameters to be determined from the experimental data. When adding only one resonance, the best result is to add a <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>N</mi><mo>*</mo></msup><mo stretchy="false">(</mo><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math> around 2097 MeV, which substantially reduces the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>χ</mi><mn>2</mn></msup></math> per degree of freedom to 1.35. There are two best solutions when adding two resonances, one is to add one <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>N</mi><mo>*</mo></msup><mo stretchy="false">(</mo><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math> and one <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>N</mi><mo>*</mo></msup><mo stretchy="false">(</mo><mn>7</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math>, the other is to add one <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>N</mi><mo>*</mo></msup><mo stretchy="false">(</mo><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math> and one <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi mathvariant="normal">Δ</mi><mo>*</mo></msup><mo stretchy="false">(</mo><mn>7</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math>, leading the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>χ</mi><mn>2</mn></msup></math> per degree of freedom to be 1.10 and 1.09, respectively. The mass values of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>N</mi><mo>*</mo></msup><mo stretchy="false">(</mo><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math> in the two resonance solutions are both near 2070 MeV. Our solutions indicate that the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup></math> nucleon resonance around 2080 MeV is strongly coupled with the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>K</mi><mo>*</mo></msup><mi mathvariant="normal">Σ</mi></math> final state and support the molecular picture of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>N</mi><mo stretchy="false">(</mo><mn>2080</mn><mo>,</mo><mn>3</mn><mo>/</mo><msup><mn>2</mn><mo>−</mo></msup><mo stretchy="false">)</mo></math>.

Jun Shi

Bing-Song Zou

Study of nucleon and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi></math> resonances from a systematic analysis of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>K</mi><mo>*</mo></msup><mi mathvariant="normal">Σ</mi></math> photoproduction