We propose a new method to determine quark masses using ratios of the vacuum-expectation values ( ) of flowed quark bilinear operators. They can be expressed as functions of the flow time $\textit{t}$ and the $$ \overline{\textrm{MS}} $$ quark mass $$ \overline{m} $$ , which can then be determined by matching with the corresponding lattice results. Motivated by this, we evaluate these perturbatively through next-to-leading order in the strong coupling. We provide the results as expansions in the limits of small and large $$ {\overline{m}}^2t $$ . To this end, we develop a new expansion technique based on the Laplace transform. Additionally, we present numerical results with the exact mass dependence over a wide range of $$ {\overline{m}}^2t $$ . We discuss the expected perturbative precision for the mass determination based on our next-to-leading order perturbative calculations, and possible non-perturbative corrections.

Japan

Hiromasa Takaura

Germany

Robert Harlander

Switzerland

Fabian Lange

A new approach to quark mass determination using the gradient flow

<p>We show that primordial adiabatic curvature fluctuations generate an instability of the scalar field sourcing a kination era. We demonstrate that the generated higher Fourier modes constitute a radiationlike component dominating over the kination background after about 11 e-folds of cosmic expansion. Current constraints on the extra number of neutrino flavors <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="normal">Δ</mi><msub><mi>N</mi><mi>eff</mi></msub></math> thus imply the observational bound of approximately 10 e-folds, representing the most stringent bound to date on the stiffness of the equation of state of the pre–Big Bang–nucleosynthesis universe.</p>

Türkiye

Cem Eröncel

Israel

Yann Gouttenoire

Ryosuke Sato

Géraldine Servant

Spain

Peera Simakachorn

Universal Bound on the Duration of a Kination Era

Cryogenic calorimeters are among the leading technologies for searching for rare events. The CUPID experiment is exploiting this technology to deploy a tonne-scale detector to search for neutrinoless double-beta decay of $$^{100}$$ Mo. The CUPID collaboration proposed an innovative approach to assembling cryogenic calorimeters in a stacked configuration, held in position solely by gravity. This gravity-based assembly method is unprecedented in the field of cryogenic calorimeters and offers several advantages, including relaxed mechanical tolerances and simplified construction. To assess and optimize its performance, we constructed a medium-scale prototype hosting 28 Li $$_2$$ MoO $$_4$$ crystals and 30 Ge light detectors, both operated as cryogenic calorimeters at the Laboratori Nazionali del Gran Sasso (Italy). Despite an unexpected excess of noise in the light detectors, the results of this test proved (i) a thermal stability better than ±0.5 mK at 10 mK, (ii) a good energy resolution of Li $$_2$$ MoO $$_4$$ cryogenic calorimeters, (6.6 ± 2.2) keV FWHM at 2615 keV, and (iii) a Li $$_2$$ MoO $$_4$$ light yield measured by the closest light detector of 0.36 keV/MeV, sufficient to guarantee the particle identification requested by CUPID.

United States

K. Alfonso

France

A. Armatol

C. Augier

F. Avignone

Italy

O. Azzolini

Russia

A. Barabash

G. Bari

A. Barrera

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

China

J. Cao

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

F. Domizio

S. Lorenzo

V. Dompe

A. Drobizhev

L. Dumoulin

G. Fantini

M. Idrissi

M. Faverzani

E. Ferri

F. Ferri

F. Ferroni

E. Figueros-Feliciamo

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

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

A gravity-based mounting approach for large-scale cryogenic calorimeter arrays

The jet energy calibration and its uncertainties are derived from measurements of the calorimeter response to single particles in both data and Monte Carlo simulation using proton–proton collisions at $$\sqrt{s} = 13$$ TeV collected with the ATLAS detector during Run 2 at the Large Hadron Collider. The jet calibration uncertainty for anti- $$k_T$$ jets with a jet radius parameter of $\textit{R}$ $$_\textrm{jet} = 0.4$$ and in the central jet rapidity region is about 2.5% for transverse momenta ( $$p_{\text {T}}$$ ) of 20 $$\text {GeV}$$ , about $$0.5\%$$ for $$p_{\text {T}} =300$$ $$\text {GeV}$$ and $$0.7\%$$ for $$p_{\text {T}} =4$$ $$\text {TeV}$$ . Excellent agreement is found with earlier determinations obtained from $$p_\textrm{T}$$ -balance based in situ methods ( $$Z/\gamma $$ +jets). The combination of these two independent methods results in the most precise jet energy measurement achieved so far with the ATLAS detector with a relative uncertainty of $$0.3\%$$ at $$p_\textrm{T}=300$$ GeV and $$0.6\%$$ at 4 TeV. The jet energy calibration is also derived with the single-particle calorimeter response measurements separately for quark- and gluon-induced jets and furthermore for jets with $\textit{R}$ $$_\textrm{jet}$$ varying from 0.2 to 1.0 retaining the correlations between these measurements. Differences between inclusive jets and jets from boosted top-quark decays, with and without grooming the soft jet constituents, are also studied.

G. Aad

Norway

E. Aakvaag

B. Abbott

United Arab Emirates

S. Abdelhameed

K. Abeling

N. Abicht

S. Abidi

M. Aboelela

Morocco

A. Aboulhorma

H. Abramowicz

H. Abreu

Y. Abulaiti

United Kingdom

B. Acharya

A. Ackermann

C. Bourdarios

Poland

L. Adamczyk

S. Addepalli

M. Addison

J. Adelman

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

J. Albert

P. Albicocco

G. Albouy

S. Alderweireldt

Z. Alegria

M. Aleksa

I. Aleksandrov

C. Alexa

Greece

T. Alexopoulos

F. Alfonsi

M. Algren

M. Alhroob

Czechia

B. Ali

Saudi Arabia

H. Ali

S. Ali

S. Alibocus

South Africa

M. Aliev

G. Alimonti

A precise measurement of the jet energy scale derived from single-particle measurements and in situ techniques in proton–proton collisions at $$\sqrt{s}=$$ 13 TeV with the ATLAS detector