A measurement of correction factors for the hadronic jet energy scale and resolution in the ATLAS detector is presented. These correction factors account for differences between simulated and observed data. They are obtained by analysing a selection of top quark events collected in proton–proton collisions by ATLAS between the years 2015 and 2018 at a centre-of-mass energy $$\sqrt{s} = 13$$ $$\text {T{eV}}$$ as well as in 2022 and 2023 at $$\sqrt{s} = 13.6$$ $$\text {T{eV}}$$ . The impact of different jet energy scale or resolution corrections on the reconstructed mass of the hadronically decaying $\textit{W}$ boson from top-quark decays in simulation is quantified. The correction factors are extracted from a fit to the parameterised reconstructed $\textit{W}$-boson mass distribution to data. The energy scale and resolution corrections are measured as a function of the jet transverse momentum between 20 and 200 GeV and absolute pseudorapidity less than 0.8. The uncertainties in the energy scale range from about 0.93% to about 1.7% for jets between 35 and 200 $$\text {G{eV}}$$ , while for the energy resolution the uncertainties range from about 14 to 28%. The method presented will be used in conjunction with other techniques to further improve ATLAS jet energy scale and resolution precision.

France

G. Aad

Norway

E. Aakvaag

United States

B. Abbott

United Arab Emirates

S. Abdelhameed

Germany

K. Abeling

N. Abicht

S. Abidi

M. Aboelela

Morocco

A. Aboulhorma

Israel

H. Abramowicz

Italy

United Kingdom

B. Acharya

A. Ackermann

C. Bourdarios

Poland

L. Adamczyk

S. Addepalli

M. Addison

J. Adelman

Türkiye

A. Adiguzel

T. Adye

A. Affolder

Y. Afik

Spain

M. Agaras

A. Aggarwal

Romania

C. Agheorghiesei

Azerbaijan

F. Ahmadov

S. Ahuja

China

X. Ai

G. Aielli

A. Aikot

M. Tamlihat

B. Aitbenchikh

Sweden

T. Åkesson

Japan

D. Akiyama

N. Akolkar

S. Aktas

G. Alberghi

Canada

J. Albert

Switzerland

U. Alberti

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

W. Alkakhi

C. Allaire

B. Allbrooke

D. Allen

J. Allen

Australia

C. Alley

A. Aloisio

Argentina

F. Alonso

C. Alpigiani

Z. Alsolami

A. Fernandez

M. Cardoso

M. Alviggi

M. Aly

Brazil

Y. Coutinho

A. Ambler

C. Amelung

M. Amerl

T. Amezza

B. Amini

K. Amirie

A. Amirkhanov

Portugal

S. Santos

D. Amperiadou

S. An

C. Anastopoulos

T. Andeen

J. Anders

A. Anderson

A. Andreazza

S. Angelidakis

A. Angerami

A. Anisenkov

A. Annovi

C. Antel

E. Antipov

M. Antonelli

F. Anulli

M. Aoki

T. Aoki

M. Aparo

L. Bella

M. Apicella

Calibration of the jet energy scale and resolution of small-radius jets using semileptonic $$t\bar{t}$$ events with the ATLAS detector

We discuss the reconstruction of scalar field potential necessary to witness inflation at the very early phase of the Universe. A minimally coupled inflaton field is considered along with a modified teleparallel gravity where the action contains a function of torsion. Reconstruction mechanism in a most general way is discussed. Constant roll inflation is imposed upon the field equations to simplify the reconstruction procedure. Considering a functional form of $\textit{f}$($\textit{T}$), we obtained the effective scalar field potential and Hubble parameter in an analytic manner.

India

B. Mishra

S. Tripathy

Constant roll inflation and reconstruction of scalar field potential in $\textit{f}$($\textit{T}$) gravity

<list id='lst0001'><list-item id='lstitem0001'><label>&#8226;</label><para id='p0001'>MSSM-like spectra are constructed from magnetized 7-brane configurations.</para></list-item><list-item id='lstitem0002'><label>&#8226;</label><para id='p0002'>Semi-realistic quark and charged-lepton flavor structures are realized from wavefunction overlaps.</para></list-item><list-item id='lstitem0003'><label>&#8226;</label><para id='p0003'>Exotic matter zero-modes are eliminated.</para></list-item><list-item id='lstitem0004'><label>&#8226;</label><para id='p0004'>Additional 7-branes are systematically embedded as sequestered hidden sectors.</para></list-item></list>

Hiroyuki Abe

Molin Chen

Itsuki Miyane

Naoki Shimada

MSSM flavors from 7-brane configurations of magnetized SYM on <math altimg='si39.svg'><mrow><msup><mi>R</mi><mrow><mn>1</mn><mo>,</mo><mn>3</mn></mrow></msup><mo linebreak='goodbreak'>&#215;</mo><msup><mrow><mo>(</mo><msup><mi>T</mi><mn>2</mn></msup><mo>)</mo></mrow><mn>3</mn></msup><mo linebreak='goodbreak'>/</mo><mrow><mo>(</mo><msub><mi>Z</mi><mn>2</mn></msub><mo linebreak='badbreak'>&#215;</mo><msubsup><mi>Z</mi><mn>2</mn><mo>&#8242;</mo></msubsup><mo>)</mo></mrow></mrow></math>

<p>Neutrino emission from nuclear reactors provides real-time insights into reactor power and fuel evolution, with potential applications in monitoring and nuclear safeguards. Following reactor shutdown, a low-intensity flux of “residual neutrinos” persists due to the decay of long-lived fission isotopes in the partially burnt fuel remaining within the reactor cores and in spent nuclear fuel stored in nearby cooling pools. The Double Chooz experiment at the Chooz B nuclear power plant in France achieved the first quantitative measurement of this residual flux based on 17.2 days of reactor-off data. In the energy range where the residual signal is most pronounced, the neutrino detector located 400 m from the cores recorded <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>106</mn><mo>±</mo><mn>18</mn></math> neutrino candidate events (<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><mn>5.9</mn><mi>σ</mi></mrow></math> significance). This measurement is in excellent agreement with the predicted value of <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>88</mn><mo>±</mo><mn>7</mn></math> events derived from detailed reactor simulations modeling the decay activities of fission products and incorporating the best-available models of neutrino spectra.</p>

T. Abrahão

H. Almazan

J.C. dos Anjos

S. Appel

J.C. Barriere

I. Bekman

T.J.C. Bezerra

L. Bezrukov

E. Blucher

C. Bourgeois

C. Buck

J. Busenitz

A. Cabrera

M. Cerrada

E. Chauveau

P. Chimenti

O. Corpace

J.V. Dawson

J.F. Du

Z. Djurcic

A. Etenko

H. Furuta

I. Gil-Botella

A. Givaudan

H. Gomez

M.C. Goodman

T. Hara

J. Haser

D. Hellwig

A. Hourlier

M. Ishitsuka

J. Jochum

C. Jollet

K. Kale

M. Kaneda

M. Karakac

T. Kawasaki

E. Kemp

D. Kryn

M. Kuze

T. Lachenmaier

C.E. Lane

T. Lasserre

D. Lhuillier

H.P. Lima

M. Lindner

J.M. LoSecco

B. Lubsandorzhiev

J. Maeda

C. Mariani

J. Maricic

J. Martino

T. Matsubara

G. Mention

A. Meregaglia

T. Miletic

R. Milincic

A. Minotti

X. Mougeot

D. Navas-Nicolás

Y. Nikitenko

P. Novella

First Measurement of Neutrino Emissions from Spent Nuclear Fuel by the Double Chooz Experiment