For the present work, we have used the <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>HYDJET</mi><mo>+</mo><mo>+</mo></mrow></math> model to explore the production of pure multi-strange hadrons in <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>Pb</mi><mo>+</mo><mi>Pb</mi></mrow></math> collisions at <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msqrt><msub><mi>s</mi><mrow><mi>N</mi><mi>N</mi></mrow></msub></msqrt><mo>=</mo><mn>2.76</mn></mrow></math> TeV and <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msqrt><msub><mi>s</mi><mrow><mi>N</mi><mi>N</mi></mrow></msub></msqrt><mo>=</mo><mn>5.02</mn></mrow></math> TeV collision energies, respectively. We have performed simulations to investigate transverse momentum (<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>p</mi><mi>T</mi></msub></math>) spectra and elliptic flow (<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>v</mi><mn>2</mn></msub></math>) for <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>ϕ</mi></math> mesons and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">Ω</mi></math> baryons, and compared the results both with the ALICE experimental data and available model predictions for selected central classes. Furthermore, we have calculated the nuclear modification factors (<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mrow><mi>A</mi><mi>A</mi></mrow></msub></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mrow><mi>C</mi><mi>P</mi></mrow></msub></math>), which provide a perception of jet quenching phenomena. Hence, our findings enable the study of the energy and system dependence of <math xmlns="http://www.w3.org/1998/Math/MathML"><mi>ϕ</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">Ω</mi></math> hadrons production over a wide range of ultrarelativistic collision energies. We also present the particle ratios (<math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi mathvariant="normal">Ω</mi><mo>/</mo><mi>ϕ</mi></mrow></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msup><mover><mi mathvariant="normal">Ω</mi><mo>¯</mo></mover><mo>+</mo></msup><mo>/</mo><msup><mi mathvariant="normal">Ω</mi><mo>−</mo></msup></mrow></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi mathvariant="normal">Ω</mi><mo>/</mo><mi>π</mi></mrow></math>, and <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>ϕ</mi><mo>/</mo><mi>π</mi></mrow></math>), offering insights into the strangeness enhancement and chemical properties of the medium at both CERN Large Hadron Collider collision energies. Additionally, we also explore the predictions for the <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">Ω</mi></math> baryon in <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>Pb</mi><mo>+</mo><mi>Pb</mi></mrow></math> collisions at <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msqrt><msub><mi>s</mi><mrow><mi>N</mi><mi>N</mi></mrow></msub></msqrt><mo>=</mo><mn>5.02</mn></mrow></math> TeV, focusing on <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mrow><mi>A</mi><mi>A</mi></mrow></msub></math>, <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mrow><mi>C</mi><mi>P</mi></mrow></msub></math>, and particle ratios within the <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>HYDJET</mi><mo>+</mo><mo>+</mo></mrow></math> framework, offering insights into future measurements and particle dynamics in high-energy heavy-ion collisions.

India

Gauri Devi

B.K. Singh

Production of multistrange hadrons in <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>Pb</mi><mo>+</mo><mi>Pb</mi></mrow></math> collisions at energies available at the CERN Large Hadron Collider using the <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>HYDJET</mi><mo>+</mo><mo>+</mo></mrow></math> model

<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>SNO</mi><mo>+</mo></mrow></math> Collaboration reports its second spectral analysis of reactor antineutrino oscillation using 286 ton-yr of new data. The measured energies of reactor antineutrino candidates were fitted to obtain the second-most precise determination of the neutrino mass-squared difference <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mrow><mi mathvariant="normal">Δ</mi><msubsup><mrow><mi>m</mi></mrow><mrow><mn>21</mn></mrow><mrow><mn>2</mn></mrow></msubsup><mo>=</mo></mrow><mo stretchy="false">(</mo><msubsup><mrow><mn>7.96</mn></mrow><mrow><mo>−</mo><mn>0.42</mn></mrow><mrow><mo>+</mo><mn>0.48</mn></mrow></msubsup><mo stretchy="false">)</mo><mo>×</mo><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup><mtext> </mtext><mtext> </mtext><msup><mrow><mi>eV</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></mrow></math>. Constraining <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><msubsup><mi>m</mi><mn>21</mn><mn>2</mn></msubsup></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>sin</mi><mn>2</mn></msup><msub><mi>θ</mi><mn>12</mn></msub></math> with measurements from long-baseline reactor antineutrino and solar neutrino experiments yields <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi mathvariant="normal">Δ</mi><msubsup><mrow><mi>m</mi></mrow><mrow><mn>21</mn></mrow><mrow><mn>2</mn></mrow></msubsup><mo>=</mo><mo stretchy="false">(</mo><msubsup><mrow><mn>7.58</mn></mrow><mrow><mo>−</mo><mn>0.17</mn></mrow><mrow><mo>+</mo><mn>0.18</mn></mrow></msubsup><mo stretchy="false">)</mo><mo>×</mo><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>5</mn></mrow></msup><mtext> </mtext><mtext> </mtext><msup><mrow><mi>eV</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></mrow></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>sin</mi></mrow><mrow><mn>2</mn></mrow></msup><msub><mrow><mi>θ</mi></mrow><mrow><mn>12</mn></mrow></msub><mo>=</mo><mn>0.308</mn><mo>±</mo><mn>0.013</mn></mrow></math>. This fit also yields a first measurement of the flux of geoneutrinos in the Western Hemisphere, with <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msubsup><mn>73</mn><mrow><mo>−</mo><mn>43</mn></mrow><mrow><mo>+</mo><mn>47</mn></mrow></msubsup></math> TNU at <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>SNO</mi><mo>+</mo></mrow></math>.

Portugal

M. Abreu

Canada

V. Albanese

A. Allega

R. Alves

M.R. Anderson

S. Andringa

L. Anselmo

J. Antunes

United Kingdom

E. Arushanova

S. Asahi

United States

M. Askins

D.M. Asner

D.J. Auty

A.R. Back

S. Back

A. Bacon

T. Baltazar

F. Barão

Z. Barnard

A. Barr

Germany

N. Barros

D. Bartlett

R. Bayes

C. Beaudoin

E.W. Beier

G. Berardi

T.S. Bezerra

A. Bialek

S.D. Biller

E. Blucher

A. Boeltzig

R. Bonventre

M. Boulay

D. Braid

E. Caden

E.J. Callaghan

J. Caravaca

J. Carvalho

L. Cavalli

D. Chauhan

M. Chen

S. Cheng

O. Chkvorets

K.J. Clark

B. Cleveland

C. Connors

D. Cookman

J. Corning

I.T. Coulter

M.A. Cox

D. Cressy

X. Dai

C. Darrach

S. DeGraw

R. Dehghani

J. Deloye

M.M. Depatie

F. Descamps

C. Dima

J. Dittmer

K.H. Dixon

F. Di Lodovico

A. Doxtator

N. Duhaime

F. Duncan

J. Dunger

A.D. Earle

M.S. Esmaeilian

D. Fabris

E. Falk

A. Farrugia

N. Fatemighomi

C. Felber

V. Fischer

E. Fletcher

R. Ford

K. Frankiewicz

N. Gagnon

A. Gaur

J. Gauthier

A. Gibson-Foster

K. Gilje

Mexico

O.I. González-Reina

D. Gooding

P. Gorel

K. Graham

C. Grant

J. Grove

S. Grullon

E. Guillian

R.L. Hahn

S. Hall

A.L. Hallin

D. Hallman

S. Hans

J. Hartnell

P. Harvey

C. Hearns

M.R. Hebert

M. Hedayatipour

Measurement of Reactor Antineutrino Oscillation at <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mi>SNO</mi><mo>+</mo></mrow></math>

We investigate the physics of a small group of quantum states defined above the sharply defined ground state of a chaotic ensemble. This “universality class of the first levels” is realized in the majority of “synthetic” random matrix models but, for all we know, in only one microscopically defined system: low-dimensional gravity. We discuss the physical properties of these states, notably their exceptional rigidity against external perturbations, as quantified by the so-called quantum state fidelity. Examining these structures through the lenses of random matrix and string theory, we highlight their relevance to the physics of low-dimensional holographic principles.

Alexander Altland

Jeremy van der Heijden

Brazil

Tobias Micklitz

Moshe Rozali

Joaquim Telles de Miranda

Universality Class of the First Levels in Low-Dimensional Gravity

Dark matter (DM) could self-annihilate into neutrinos in dense regions of the Universe. We consider the resulting flux of neutrinos from the Milky Way DM halo and derive exclusion limits on the annihilation cross section using XENONnT electron recoil data. Assuming a <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>J</mi></math> factor independent of the annihilation cross section, we find leading limits for DM masses below <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="script">O</mi><mo stretchy="false">(</mo><mi>MeV</mi><mo stretchy="false">)</mo></math>. Self-annihilating DM affects the DM halo via dissolution, introducing a cross-section dependency on the halo profile and thus the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>J</mi></math> factor. We discuss such a situation in more detail, finding that the signal rate is below the experimental sensitivity of XENONnT, leaving the annihilation cross section unconstrained.

South Korea

Boris Betancourt Kamenetskaia

Jong-Chul Park

Merlin Reichard

Gaurav Tomar

Investigating sub-MeV dark matter annihilation to neutrinos using direct detection experiments

Recent high-precision <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><mo stretchy="false">→</mo><mi>c</mi><mover accent="true"><mi>c</mi><mo stretchy="false">¯</mo></mover></math> data from BESIII and Belle are highly useful to understand vector charmonium (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ψ</mi></math>) pole structures and puzzling line shapes due to the exotic hadron candidates <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Y</mi></math>. We, thus, perform a global coupled-channel analysis of most of the available data (ten two-body, nine three-body, and one four-body final states) in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mrow><mrow><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo></mrow><mn>3.75</mn><mtext> </mtext><mo>−</mo><mn>4.7</mn></mrow><mtext> </mtext><mi>GeV</mi></mrow></math>. Not only cross sections, but also invariant-mass distributions of subsystems are fitted. The <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><mo stretchy="false">→</mo><msup><mi>μ</mi><mo>+</mo></msup><msup><mi>μ</mi><mo>−</mo></msup></math> cross sections are also predicted. Our model includes dozens of (quasi-)two-body states that nonperturbatively couple with each other through bare <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ψ</mi></math> excitations, particle-exchange, and short-range mechanisms; approximate three-body unitarity is considered. The amplitudes obtained from the fit are analytically continued to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ψ</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>Z</mi><mi>c</mi></msub></math> poles. We find <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ψ</mi></math> states similar to those in the Particle Data Group listing and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>Y</mi><mo stretchy="false">(</mo><mn>4320</mn><mo stretchy="false">)</mo></math>. Moreover, several <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ψ</mi></math> states, including new ones, are found close to open-charm thresholds. Trajectories and compositeness of the near-threshold poles suggest dominant hadron-molecule contents in their internal structures. Two <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>Z</mi><mi>c</mi></msub></math> poles are found as virtual states <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo>∼</mo><mn>40</mn><mtext> </mtext><mtext> </mtext><mi>MeV</mi></math> below the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>D</mi><mo>*</mo></msup><msup><mover accent="true"><mi>D</mi><mo stretchy="false">¯</mo></mover><mrow><mo stretchy="false">(</mo><mo>*</mo><mo stretchy="false">)</mo></mrow></msup></math> thresholds, consistent with lattice QCD results. This work presents the first global analysis to determine <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ψ</mi></math> and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>Z</mi><mi>c</mi></msub></math> poles, thereby paving the way to extracting detailed properties of the prominent exotic hadron candidates from data.

China

S.X. Nakamura

X.H. Li

H.P. Peng

Z.T. Sun

X.R. Zhou

Global coupled-channel analysis of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>e</mi><mo>+</mo></msup><msup><mi>e</mi><mo>−</mo></msup><mo stretchy="false">→</mo><mi>c</mi><mover accent="true"><mi>c</mi><mo stretchy="false">¯</mo></mover></math> processes in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mrow><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo></mrow><mn>3.75</mn><mtext> </mtext><mi>to</mi><mtext> </mtext><mn>4.7</mn><mtext> </mtext><mi>GeV</mi></mrow></math>

Recently, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi><mo stretchy="false">→</mo><mi>P</mi><mi>P</mi></math> decays (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi><mo>=</mo><mo stretchy="false">{</mo><msup><mi>B</mi><mn>0</mn></msup><mo>,</mo><msup><mi>B</mi><mo>+</mo></msup><mo>,</mo><msubsup><mi>B</mi><mi>s</mi><mn>0</mn></msubsup><mo stretchy="false">}</mo></math>, <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>P</mi><mo>=</mo><mo stretchy="false">{</mo><mi>π</mi><mo>,</mo><mi>K</mi><mo stretchy="false">}</mo></math>) were analyzed under the assumption of flavor SU(3) symmetry (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></math>). Although the individual fits to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><mi>S</mi><mo>=</mo><mn>0</mn></math> or <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><mi>S</mi><mo>=</mo><mn>1</mn></math> decays are good, it was found that the combined fit is very poor: there is a <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>3.6</mn><mi>σ</mi></math> disagreement with the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></math> limit of the standard model (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SM</mi></mrow><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></msub></mrow></math>). One can remove this discrepancy by adding <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></math>-breaking effects, but 1000% <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></math> breaking is required. In this paper, we extend this analysis to include decays in which there is an <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>η</mi></math> and/or <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>η</mi><mo>′</mo></msup></math> meson in the final state. We now find that the combined fit exhibits a <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>4.1</mn><mi>σ</mi></math> discrepancy with the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SM</mi></mrow><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></msub></mrow></math>, and 1000% <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></math>-breaking effects are still required to explain the data. These results are rigorous, group-theoretically—no theoretical assumptions have been made. But when one adds some theoretical input motivated by QCD factorization, the discrepancy with the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi>SM</mi></mrow><mrow><msub><mrow><mi>SU</mi><mo stretchy="false">(</mo><mn>3</mn><mo stretchy="false">)</mo></mrow><mrow><mi>F</mi></mrow></msub></mrow></msub></mrow></math> grows to <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>4.9</mn><mi>σ</mi></math>.

Bhubanjyoti Bhattacharya

Marianne Bouchard

Luke Hudy

Alexandre Jean

David London

Christopher MacKenzie

Anomalies in hadronic <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>B</mi></math> decays: An update

We report on a search for elementary particles with charges much smaller than the electron charge using a data sample of proton-proton collisions provided by the CERN Large Hadron Collider in 2023–24, corresponding to an integrated luminosity of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>124.7</mn><mtext> </mtext><mtext> </mtext><msup><mi>fb</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></math> at a center-of-mass energy of 13.6 TeV. The analysis presented uses the completed Run 3 milliQan bar detector to set the most stringent constraints to date for particles with charges <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mo>≤</mo><mn>0.24</mn><mtext> </mtext><mtext> </mtext><mi mathvariant="normal">e</mi></mrow></math> and masses <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo>≥</mo><mn>0.45</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi></math>.

S. Alcott

Z. Bhatti

J. Brooke

C. Campagnari

M. Carrigan

M. Citron

R. De Los Santos

CERN

A. De Roeck

C. Dorofeev

T. Du

M. Gastal

J. Goldstein

F. Golf

N. Gonzalez

A. Haas

J. Heymann

C.S. Hill

D. Imani

M. Joyce

K. Larina

R. Loos

Belgium

S. Lowette

H. Mei

D.W. Miller

B. Peng

S.N. Santpur

I. Reed

E. Schaffer

R. Schmitz

J. Steenis

D. Stuart

J.S. Tafoya Vargas

D. Vannerom

T. Wybouw

Z. Xiao

Lebanon

H. Zaraket

G. Zecchinelli

C. Zheng

Search for Millicharged Particles in Proton-Proton Collisions at <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msqrt><mrow><mi>s</mi></mrow></msqrt><mo>=</mo><mn>13.6</mn><mtext> </mtext><mtext> </mtext><mi>TeV</mi></mrow></math>

The present work is devoted to developing the integrated hydrokinetic model (iHKM) for relativistic nucleus-nucleus collisions. While the previous cycle of works on this topic focused on ultrarelativistic collisions at the top RHIC and different LHC energies, the current work addresses relativistic collisions at the lower energies, specifically ranging from approximately 2 to 50 GeV per nucleon pair in the center-of-mass colliding system. In such collisions, the formation times for the initial state of dense matter can be up to three orders of magnitude longer than those in ultrarelativistic collisions. This difference reflects a fundamentally distinct nature and formation process, particularly regarding the possible stages of initial state evolution, including thermalization (which may be only partial at very low collision energies), subsequent hydrodynamic expansion, and the final transition of matter evolution into a hadronic cascade. These stages, which are fully realized in ultrarelativistic reactions, can also occur within the energy range of BES RHIC, albeit with distinct timescales. This publication not only advances the theoretical development of iHKM [referred to, if necessary, as the extended version of integrated hydrokinetic model (<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>iHKM</mi><mi>e</mi></math>)], but also provides examples of model applications for calculating observables. A systematic description across a wide range of experimental energies, which is preliminary yet quite satisfactory, for spectra, flow, and femtoscopy, will follow this study.

Ukraine

Musfer Adzhymambetov

Poland

Yuri Sinyukov

Extension of the integrated hydrokinetic model to nuclear collision energies relevant for the RHIC Beam-Energy Scan program and the research program at GSI-FAIR

We propose to probe light-quark dipole interactions at lepton colliders using the azimuthal asymmetry of a collinear dihadron pair <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mo stretchy="false">(</mo><msub><mi>h</mi><mn>1</mn></msub><msub><mi>h</mi><mn>2</mn></msub><mo stretchy="false">)</mo></math> produced in association with another hadron <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>h</mi><mo>′</mo></msup></math>. This asymmetry, arising from quantum interference in the quark spin space, is exclusively sensitive to dipole interactions at the leading power of the new physics scale and simultaneously probes both the real and imaginary components of the dipole couplings. By combining all possible channels of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msup><mi>h</mi><mo>′</mo></msup></math>, this method allows for disentangling the up and down quark dipole moments and has the potential to significantly strengthen current constraints by one to two orders of magnitude.

Xin-Kai Wen

Bin Yan

Zhite Yu

C.P. Yuan

Transverse spin effects and light-quark dipole moments at lepton colliders

We present the results of a first-principles theoretical study of the inclusive semileptonic decays of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>D</mi><mi>s</mi></msub></math> meson. We performed a state-of-the-art lattice QCD calculation using the gauge ensembles produced by the Extended Twisted Mass Collaboration with dynamical light, strange and charm quarks with physical masses and employed the so-called Hansen-Lupo-Tantalo (HLT) method to extract the decay rate and the first two lepton-energy moments from the relevant Euclidean correlators. We have carefully taken into account all sources of systematic errors, including the ones associated with the continuum and infinite-volume extrapolations and with the HLT spectral reconstruction method. We obtained results in very good agreement with the currently available experimental determinations and with a total accuracy at the few-percent level, of the same order of magnitude of the experimental error. Our total error is dominated by the lattice QCD simulations statistical uncertainties and is certainly improvable. From the results presented and thoroughly discussed in this paper we conclude that it is nowadays possible to study heavy mesons inclusive semileptonic decays on the lattice at a phenomenologically relevant level of accuracy. The phenomenological implications of our physical results are the subject of a companion Letter [A. De Santis et al., Inclusive semileptonic decays of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>D</mi><mi>s</mi></msub></math> meson: Lattice QCD confronts experiments, Phys. Rev. Lett. 135, 121901 (2025).].

Alessandro De Santis

Inclusive semileptonic decays of the <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msub><mi>D</mi><mi>s</mi></msub></math> meson: A first-principles lattice QCD calculation