Accès ouvert
2026
article
OpenAlex
Georges Aad, Erlend Aakvaag, B M. Acharya, Mariano Apicella et autres
A measurement of $t\bar{t}$ production is presented in the invariant-mass region near the pair production threshold, $m_{t\bar{t}} \sim 345$ GeV, in final states with two charged leptons and multiple jets. The measurement is based on $140\,\mathrm{fb}^{-1}$ of proton-proton collision data collected at …
Accès ouvert
2026
article
OpenAlex
Georges Aad, Erlend Aakvaag, B M. Acharya, Mariano Apicella et autres
International audience
Accès ouvert
2026
article
OpenAlex
Georges Aad, Erlend Aakvaag, Yiming Abulaiti, Masato Aoki et autres
High-energy photonuclear ($\gamma+A$) scattering in ultra-peripheral heavy-ion collisions provides a unique probe of nuclear structure. This Letter studies the dependence of $\gamma+A$ jet production in ultra-peripheral Pb+Pb collisions at $\sqrt{s_{_\text{NN}}} = 5.02$ TeV on the presence of forward neutron emission from either …
Accès ouvert
2025
preprint
OpenAlex
Georges Aad, Erlend Aakvaag, B M. Acharya, Christian Appelt et autres
A deep-learning approach based on the transformer architecture is developed to distinguish between jets originating from quarks and gluons. The algorithm operates on jets with transverse momentum $p_{\text{T}} > 20$ and pseudorapidity $|η| < 4.5$ and takes as input several properties derived …
Accès ouvert
2025
preprint
OpenAlex
G. Aad, E. Aakvaag, B M. Acharya, Christian Appelt et autres
Inclusive dijet cross-sections have been measured in proton-proton collisions at a centre-of-mass energy of 13 TeV using data with an integrated luminosity of 140 fb$^{-1}$, recorded by the ATLAS detector at the Large Hadron Collider during 2015-2018. Jets are identified using the …