We use a non-invertible symmetry to construct a three-zero texture for the down-type quark mass matrix, which can resolve the strong CP problem without invoking the axion, in four-dimensional spacetime with three quark families in QCD. We assume CP invariance at the fundamental high-energy scale.

Japan

Qiuyue Liang

China

Tsutomu T. Yanagida

Non-invertible symmetry as an axion-less solution to the strong CP problem

CUPID, the CUORE Upgrade with Particle Identification, is a next-generation experiment to search for neutrinoless double beta decay ( $$0\mathrm {\nu \beta \beta }$$ ) and other rare events using enriched Li $$_{2}$$ $$^{100}$$ MoO $$_{4}$$ scintillating bolometers. It will be hosted by the CUORE cryostat located at the Laboratori Nazionali del Gran Sasso in Italy. The main physics goal of CUPID is to search for $$0\mathrm {\nu \beta \beta }$$ of $$^{100}$$ Mo with a discovery sensitivity covering the full neutrino mass regime in the inverted ordering scenario, as well as the portion of the normal ordering regime with lightest neutrino mass larger than 10 meV. With a conservative background index of 10 $$^{-4}$$ cts $$/($$ keV $$\cdot $$ kg $$\cdot $$ yr $$)$$ , 240 kg isotope mass, 5 keV FWHM energy resolution at 3 MeV and 10 live-years of data taking, CUPID will have a 90% C.L. half-life exclusion sensitivity of $$1.8\cdot 10^{27}$$ yr, corresponding to an effective Majorana neutrino mass ( $$m_{\beta \beta }$$ ) sensitivity of 9–15 meV, and a $$3\sigma $$ discovery sensitivity of $$1\cdot 10^{27}$$ yr, corresponding to an $$m_{\beta \beta }$$ range of 12–21 meV.

United States

K. Alfonso

France

A. Armatol

C. Augier

F. Avignone III

Italy

O. Azzolini

Russia

A. Barabash

G. Bari

A. Barresi

D. Baudin

F. Bellini

G. Benato

L. Benussi

V. Berest

M. Beretta

L. Bergé

M. Bettelli

M. Biassoni

J. Billard

F. Boffelli

V. Boldrini

E. Brandani

C. Brofferio

C. Bucci

M. Buchynska

J. Camilleri

A. Campani

J. Cao

Switzerland

C. Capelli

S. Capelli

V. Caracciolo

L. Cardani

P. Carniti

N. Casali

E. Celi

C. Chang

M. Chapellier

H. Chen

D. Chiesa

D. Cintas

M. Clemenza

I. Colantoni

S. Copello

O. Cremonesi

R. Creswick

A. D’Addabbo

I. Dafinei

Ukraine

F. Danevich

F. Dominicis

M. Jesus

P. Marcillac

S. Dell’Oro

S. Domizio

S. Lorenzo

United Kingdom

T. Dixon

A. Drobizhev

L. Dumoulin

M. Idrissi

M. Faverzani

E. Ferri

F. Ferri

F. Ferroni

E. Figueroa-Feliciano

J. Formaggio

A. Franceschi

S. Fu

B. Fujikawa

J. Gascon

S. Ghislandi

A. Giachero

M. Girola

L. Gironi

A. Giuliani

P. Gorla

C. Gotti

C. Grant

P. Gras

Brazil

P. Guillaumon

T. Gutierrez

K. Han

E. Hansen

K. Heeger

D. Helis

H. Huang

M. Hurst

L. Imbert

A. Juillard

G. Karapetrov

G. Keppel

H. Khalife

V. Kobychev

Yu. Kolomensky

R. Kowalski

H. Lattaud

M. Lefevre

M. Lisovenko

R. Liu

Y. Liu

P. Loaiza

L. Ma

F. Mancarella

CUPID, the

We identify a minisuperspace of complex deformations of ABJM theory for which the partition function specifies the amplitude of an eternally inflating universe. The boundary theory predicts that the bosonic bulk is effectively in the Hartle-Hawking no-boundary state, with a subleading ‘tunneling’ contribution. This holographic model of inflation also reveals a close connection between the swampland distance and cobordism conjectures, and the condition for the asymptotic wave function to predict classical behavior in geometry and fields.

Belgium

Thomas Hertog

Jef Pauwels

Victoria Venken

Holographic (eternal) inflation

We develop a spinor helicity formalism for five-dimensional scattering amplitudes of any mass and spin configuration. While five-dimensional spinor helicity variables have been previously studied in the context of $$ \mathcal{N} $$ = 2, 4 supersymmetric Yang-Mills scattering amplitudes with spin less than two [1], we propose an alternative viewpoint that stems from $\textit{d}$-dimensional spinor helicity variables avoiding the decomposition of a massive momentum into the sum of two massless momenta. By enumerating all possible independent little group tensors, we systematically build the full space of five-dimensional three-point tree-level scattering amplitudes for any configuration of spins and masses. Furthermore, we provide a prescription for computing the high energy limit of scattering amplitudes written in our spinor helicity variables. We also expect that our formalism will be applicable to effective field theories with higher spin, in particular, the scattering of highly spinning black holes in five dimensions.

Andrzej Pokraka

Smita Rajan

Lecheng Ren

Anastasia Volovich

W. Zhao

Five-dimensional spinor helicity for all masses and spins

Given a graph its set of connected subgraphs (tubes) can be defined in two ways: either by considering subsets of edges, or by considering subsets of vertices. We refer to these as binary tubes and unary tubes respectively. Both notions come with a natural compatibility condition between tubes which differ by a simple adjacency constraint. Compatible sets of tubes are referred to as tubings. By considering the set of binary tubes, and summing over all maximal binary-tubings, one is led to an expression for the flat-space wavefunction coefficients relevant for computing cosmological correlators. On the other hand, considering the set of unary tubes, and summing over all maximal unary-tubings, one is led to expressions recently referred to as amplitubes which resemble the scattering amplitudes of tr($\textit{ϕ}$ ) theory. Due to the similarity between these constructions it is natural to expect a close connection between the wavefunction coefficients and amplitubes. In this paper we study the two definitions of tubing in order to provide a new formula for the flat-space wavefunction coefficient for a single graph as a sum over products of amplitubes. We also show how the expressions for the amplitubes can naturally be understood as a sum over orientations of the underlying graph. Combining these observations we are lead to an expression for the wavefunction coefficient given by a sum over terms we refer to as decorated amplitubes which matches a recently conjectured formula resulting from partial fractions. Motivated by our rewriting of the wavefunction coefficient we introduce a new definition of tubing which makes use of both the binary and unary tubes which we refer to as cut tubings. We explain how each cut tubing induces a decorated orientation of the underlying graph satisfying an acyclic condition and demonstrate how the set of all acyclic decorated orientations for a given graph count the number of basis functions appearing in the kinematic flow.

Ross Glew

Wavefunction coefficients from amplitubes

Logarithmic corrections to the entropy of extremal black holes have been successfully used to accurately match degeneracies from microscopic constructions to calculations of the gravitational path integral. In this paper, we revisit the problem of deriving such corrections for the case of extremal black holes, either non-supersymmetric or supersymmetric, and for near-extremal black holes. The zero-modes that are present at extremality are crucial, since their path integral cannot be treated quadratically and needs to be regulated. We show how the regulated result can be obtained by taking the zero-temperature limit of either the 4$\textit{d}$ Einstein-Maxwell or 4$\textit{d}$ supergravity path integral to find the Schwarzian or super-Schwarzian theories. This leads to drastically different estimates for the degeneracy of extremal black hole: it vanishes when the extremal limit does not preserve supersymmetry, while it reproduces Bekenstein-Hawking in the BPS case. In a companion paper, we discuss how such zero-modes affect the calculation of BPS black holes degeneracies, using supersymmetric localization for an exact computation of the gravitational path integral.

Luca Iliesiu

Sameer Murthy

Gustavo Turiaci

Revisiting the logarithmic corrections to the black hole entropy

Generic nonlinear theories of chiral 2-form electrodynamics allow superluminal propagation in some stationary homogeneous backgrounds and are therefore acausal. We find a simple parameterisation of the Hamiltonian for causal theories, and we use it to show that the stress-energy tensor satisfies both the Dominant and Strong energy conditions. We also revisit the Perry-Schwarz formulation, clarifying aspects of it and of its relation to the Hamiltonian formulation.

Spain

Jorge Russo

Paul Townsend

Causal chiral 2-form electrodynamics

We propose a Lorentz invariant and little group covariant description of beta decay amplitudes relying on on-shell amplitude methods and the spinor variables for massive particles. The framework is employed to calculate Coulomb corrections to the decay amplitude and their contribution to $\textit{T}$-odd correlation coefficients, including the $\textit{D}$ parameter. In the SM limit we recover the known results for the Coulomb contributions to $\textit{D}$ and update their numerical values. We also calculate new subleading contributions to $\textit{D}$ in the presence of non-standard scalar and tensor interactions. We also point out that another $\textit{T}$-odd correlation coefficient is generated in the SM at the same order as the $\textit{D}$ parameter, and provide their numerical values for selected transitions.

Edoardo Alviani

Adam Falkowski

On the Coulomb corrections in nuclear beta decay

A measurement of the $$B^{0}$$ meson lifetime using $$ B^{0} \rightarrow J/\psi K^{*0} $$ decays in data from 13 $$\text {TeV}$$ proton–proton collisions with an integrated luminosity of $$ 140~\mathrm {fb^{-1}} $$ recorded by the ATLAS detector at the LHC is presented. The measured effective lifetime is The average decay width extracted from the effective lifetime, using parameters from external sources, is where the uncertainties are statistical, systematic and from external sources. The earlier ATLAS measurement of $$\Gamma _s$$ in the $$B^{0}_{s} \rightarrow J/\psi \phi $$ decay was used to derive a value for the ratio of the average decay widths $$\Gamma _d$$ and $$\Gamma _s$$ for $$B^{0} $$ and $$B^{0}_{s} $$ mesons respectively, of The measured lifetime, average decay width and decay width ratio are in agreement with theoretical predictions and with measurements by other experiments. This measurement provides the most precise result of the effective lifetime of the $$B^{0}$$ meson to date.

G. Aad

Norway

E. Aakvaag

B. Abbott

United Arab Emirates

S. Abdelhameed

Germany

K. Abeling

N. Abicht

S. Abidi

M. Aboelela

Morocco

A. Aboulhorma

Israel

H. Abramowicz

H. Abreu

Y. Abulaiti

B. Acharya

A. Ackermann

C. Bourdarios

Poland

L. Adamczyk

S. Addepalli

M. Addison

J. Adelman

Türkiye

A. Adiguzel

T. Adye

A. Affolder

Y. Afik

M. Agaras

J. Agarwala

A. Aggarwal

Romania

C. Agheorghiesei

Azerbaijan

F. Ahmadov

Canada

W. Ahmed

S. Ahuja

X. Ai

G. Aielli

A. Aikot

M. Tamlihat

B. Aitbenchikh

M. Akbiyik

Sweden

T. Åkesson

A. Akimov

D. Akiyama

N. Akolkar

S. Aktas

K. Khoury

G. Alberghi

Precision measurement of the $$B^{0}$$ meson lifetime using $$B^{0}\rightarrow J/\psi K^{{* 0}}$$ decays with the ATLAS detector