Bayesian analysis results require a choice of prior distribution. In long-baseline neutrino oscillation physics, the usual parameterisation of the mixing matrix induces a prior that privileges certain neutrino mass and flavour state symmetries. Here we study the effect of privileging alternate symmetries on the results of the T2K experiment. We find that constraints on the level of CP violation (as given by the Jarlskog invariant) are robust under the choices of prior considered in the analysis. On the other hand, the degree of octant preference for the atmospheric angle depends on which symmetry has been privileged.

Japan

A. Abe

S. Abe

R. Akutsu

United Kingdom

H. Alarakia-Charles

Y. Hakim

Switzerland

S. Monsalve

L. Anthony

S. Aoki

K. Apte

T. Arai

T. Arihara

S. Arimoto

Y. Ashida

E. Atkin

United States

N. Babu

Russia

V. Baranov

G. Barker

G. Barr

D. Barrow

France

P. Bates

L. Bathe-Peters

Poland

M. Batkiewicz-Kwasniak

N. Baudis

Italy

V. Berardi

L. Berns

S. Bhattacharjee

A. Blanchet

A. Blondel

P. Boistier

S. Bolognesi

S. Bordoni

S. Boyd

C. Bronner

A. Bubak

M. Avanzini

J. Caballero

F. Cadoux

N. Calabria

Vietnam

S. Cao

S. Cap

D. Carabadjac

S. Cartwright

Spain

M. Casado

M. Catanesi

J. Chakrani

A. Chalumeau

D. Cherdack

P. Chong

A. Chvirova

J. Coleman

G. Collazuol

Canada

F. Cormier

A. Craplet

A. Cudd

D. D’ago

C. Dalmazzone

T. Daret

Hungary

P. Dasgupta

C. Davis

Yu. Davydov

P. Perio

G. Rosa

T. Dealtry

C. Densham

A. Dergacheva

R. Banerjee

F. Lodovico

G. Lopez

S. Dolan

D. Douqa

T. Doyle

O. Drapier

K. Duffy

J. Dumarchez

P. Dunne

K. Dygnarowicz

A. Eguchi

J. Elias

S. Emery-Schrenk

G. Erofeev

A. Ershova

G. Eurin

D. Fedorova

S. Fedotov

M. Feltre

L. Feng

D. Ferlewicz

A. Finch

M. Fitton

C. Forza

M. Friend

Y. Fujii

Y. Fukuda

Y. Furui

Belgium

J. García-Marcos

A. Germer

L. Giannessi

C. Giganti

M. Girgus

V. Glagolev

Testing T2K’s Bayesian constraints with priors in alternate parameterisations

We investigate photon-hadron transverse energy-energy correlation (TEEC) and azimuthal correlations in the forward rapidity region for proton-proton and proton-lead collisions within the small <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>x</mi></math> saturation formalism based on the color glass condensate (CGC), supplemented by the initial-state and final-state parton shower simulation and hadronization using CASCADE. The study was performed in light of the upcoming FoCal detector of ALICE and the ATLAS detector upgrades with the extended pseudorapidity coverage. We predict a significant difference, at hadron-level, between the normalized TEECs in proton-proton and proton-lead collisions. Having a direct access to partonic subprocesses we also directly investigate the impact of the parton shower and hadronization on the TEEC. The ordinary azimuthal <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>γ</mi></math>-hadron correlations show substantial suppression for proton-lead collision, as predicted earlier at parton level.

Ishita Ganguli

Piotr Kotko

Transverse energy-energy and azimuthal correlations in forward <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>γ</mi></math>-hadron production in proton-proton and proton-lead collisions at the LHC

We investigate the reconstruction of standard and generalized Rastall gravity inflationary models, using the scalar spectral index and the Rastall parameter expressed as functions of the number of <math altimg='si3.svg'><mrow><mi>e</mi><mo linebreak='goodbreak'>&#8722;</mo></mrow></math>folds <italic>N</italic>. Within a general formalism, we derive the effective potential in terms of the relevant cosmological parameters and the Rastall parameter for these gravity frameworks. As a specific example, we analyze the attractor <math altimg='si4.svg'><mrow><msub><mi>n</mi><mi>s</mi></msub><mrow><mo>(</mo><mi>N</mi><mo>)</mo></mrow><mo linebreak='goodbreak'>&#8722;</mo><mn>1</mn><mo>&#8733;</mo><msup><mi>N</mi><mrow><mo>&#8722;</mo><mn>1</mn></mrow></msup></mrow></math>, first by considering constant values of the Rastall parameter to reconstruct the inflationary stage in standard Rastall gravity, and then by assuming a linear dependence on the number of <math altimg='si3.svg'><mrow><mi>e</mi><mo linebreak='goodbreak'>&#8722;</mo></mrow></math>folds <italic>N</italic> to reconstruct the inflationary model in generalized Rastall gravity. Thus, the reconstruction of the potential <italic>V</italic>( <italic>&#981;</italic>) is obtained for both standard and generalized Rastall gravity inflationary models. In both frameworks, we constrain key parameters of the reconstructed models during inflation using the latest observational data from Planck.

Chile

Ramón Herrera

Carlos Ríos

Reconstructing inflation in a generalized Rastall theory of gravity

Motivated by integrating the dilaton field (as a UV correction) with dRGT-like massive gravity (as an IR correction) into Einstein gravity, we investigate the thermodynamic and optical properties of black holes within this gravitational framework. We begin by reviewing the black hole solutions in Maxwell–dilaton–dRGT-like massive gravity, followed by an analysis of how various parameters influence on the asymptotical behavior of the spacetime and the event horizon of these black holes. In the subsequent section, we examine the conserved and thermodynamic quantities associated with these black holes, paying particular attention to the effects of parameters like $$\beta ,$$ $$\alpha ,$$ and the massive parameters $$(\eta _{1}$$ and $$\eta _{2})$$ on their local stability by simultaneously evaluating the heat capacity and temperature. We also adopt an alternative method to study phase transitions using geometrothermodynamics. Furthermore, we explore how the parameters of Maxwell–dilaton–dRGT-like massive gravity impacts the optical characteristics and radiative behavior of black holes. In particular, we analyze the effects of the dilaton coupling constant $$(\alpha ),$$ charge ($\textit{q}$), the massive gravity parameter $$(\eta _1),$$ and the graviton mass $$(m_g)$$ on the radius of the photon sphere and the resulting black hole shadow. Moreover, the theoretical shadow radius is compared to the observational data from $$Sgr A^*.$$ Additionally, we investigate the energy emission rate of these black holes, revealing that these parameters substantially influence the emission peak.

Iran

B. Panah

N. Heidari

M. Soleimani

Some perspective of thermodynamical and optical properties of black holes in Maxwell–dilaton–dRGT-like massive gravity

We explicitly construct a class of multivariate generalized hypergeometric series which is conjectured in our previous paper [1] to calculate multipoint one-loop parametric conformal integrals in $\textit{D}$ dimensions. Our approach is based on a simple diagrammatic algorithm which systematically builds both arguments and series coefficients in terms of a convex polygon which is part of the Baxter lattice. The examples of the box, pentagon, and hexagon integrals are considered in detail.

Konstantin Alkalaev

Semyon Mandrygin

Multipoint conformal integrals in $\textit{D}$ dimensions. Part II. Polygons and basis functions

Recent developments for the consistent embedding of general 4D static and spherically-symmetric spacetimes in arbitrary single-brane braneworld models in the form of the General Embedding Algorithm (GEA) [$\textit{Phys.Rev. D}$ (2024) L041501], initiated the program of studying the bulk structure of braneworld wormholes. In this article, adopting a completely generic approach, we derive the general conditions that the metric functions of any braneworld spacetime must satisfy to describe a wormhole structure in the bulk. Particular emphasis is placed on clarifying the proper uplift of 4D spacetimes, expressed in terms of arbitrary radial coordinates on the brane, and we demonstrate the important role of the circumferential radius metric function $\textit{r}$($\textit{u}$) for the embedding. To ensure applicability even when $\textit{r}$($\textit{u}$) is non-invertible, we develop an extended formulation of the GEA. Additionally, the flare-out conditions for braneworld wormholes are presented for the first time and are found to differ from the case of flat extra dimensions. To illustrate the method, we first perform the uplift into both thin (Randall-Sundrum II) and thick braneworld models for four well-known 4D wormhole spacetimes: the effective braneworld wormhole solutions of Casadio-Fabbri-Mazzacurati and Bronnikov-Kim, the Simpson-Visser spacetime, and the Ellis-Bronnikov or “anti-Fisher” solution. Subsequently, we study their bulk features by means of curvature invariants, flare-out conditions, energy conditions and embedding diagrams. Our analysis reveals that the assumption of a warped extra dimension has non-trivial implications for the structure of 5D wormholes.

Czechia

Thomas Pappas

South Korea

Theodoros Nakas

On the uplift of 4D wormholes in braneworld models and their 5D structure

We investigate codimension-2 defect partition functions and quantum Seiberg-Witten curves in 5d rank-1 supersymmetric QFTs, including non-Lagrangian and Kaluza-Klein theories. Using generalized blowup equations, we compute defect partition functions in the Ω-background and show that, in the Nekrasov-Shatashvili limit, they satisfy certain difference equations that encode the quantization of classical Seiberg-Witten curves. Furthermore, we explore novel transitions in the defect partition functions and their relation to coordinate transformations of quantum Seiberg-Witten curves, with a focus on SL(2,ℤ) transformations and Hanany-Witten transitions. These findings provide new insights into the interplay between codimension-2 defects, quantum curves, and the geometric structure of 5d supersymmetric QFTs.

Hee-Cheol Kim

Minsung Kim

China

Sung-Soo Kim

Kimyeong Lee

Xin Wang

Probing quantum curves and transitions in 5d SQFTs via defects and blowup equations

We extend the geometric framework of field-space covariance for loop computations, thereby unifying the treatment of scalars, fermions, and gauge bosons in effective field theories. This allows us to derive a manifestly covariant formula for one-loop UV divergences that includes contributions from mixed boson-fermion graphs. The result is expressed in terms of geometric invariants of the field-space supermanifold. As a demonstration of this formula, we compute the renormalization group equations for two-fermion operators at the dimension-eight level in the Standard Model Effective Field Theory.

Benoît Assi

Andreas Helset

Julie Pagès

Taiwan

Chia-Hsien Shen

Renormalizing two-fermion operators in the SMEFT via supergeometry

Very recently, the two-photon decay width of the <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>η</mi><mi>b</mi></msub></math> meson was computed with lattice QCD methods. This decay has not yet been measured. The knowledge of this width allows for the calculation of the <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>η</mi><mi>b</mi></msub></math> production cross section through photon-photon interactions in ultraperipheral (UPC) <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>P</mi><mi>b</mi><mtext>−</mtext><mi>P</mi><mi>b</mi></mrow></math> collisions. In this work we present this calculation, which is the first application of the lattice result. Since UPCs are gaining increasing attention of the heavy-ion community, we take the opportunity to perform a comprehensive study of the different ways of defining ultraperipheral collisions and of the different ways to treat the equivalent photon flux.

Brazil

C.N. Azevedo

F.C. Sobrinho

F.S. Navarra

Production of <math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>η</mi><mi>b</mi></msub></math> in ultraperipheral Pb-Pb collisions

Calculations truncated at a fixed order in perturbation theory are accompanied by an associated theoretical uncertainty, which encodes the missing higher orders (MHOU). This is typically estimated by a scale variation procedure, which has well-known shortcomings. In this work, we propose a simple prescription to directly encode the missing higher order terms using theory nuisance parameters (TNPs) and estimate the uncertainty by their variation. We study multiple processes relevant for Large Hadron Collider physics at next-to-leading and next-to-next-to-leading order in perturbation theory, obtaining MHOU estimates for differential observables in each case. In cases where scale variations are well-behaved we are able to replicate their effects using TNPs, while we find significant improvement in cases where scale variation typically underestimates the uncertainty.

Matthew A. Lim

Rene Poncelet

Robust estimates of theoretical uncertainties at fixed-order in perturbation theory