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2025-12-23
11:51
Search for $t\bar{t}$ resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment
A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. [...]
CERN-EP-2025-281. - 2025
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2025-12-23
04:12
Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment / ATLAS Collaboration
A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. [...]
arXiv:2512.17856 ; CERN-EP-2025-281. - 63.
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2025-12-22
07:52
Measurement of inclusive dijet cross-sections in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
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. [...]
CERN-EP-2025-283. - 2025
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2025-12-22
07:42
Calibration of the jet energy scale and resolution of small-radius jets using semileptonic $t\bar{t}$ events with the ATLAS detector / ATLAS Collaboration
A measurement of correction factors for the hadronic jet energy scale and resolution in the ATLAS detector is presented. [...]
arXiv:2512.17482 ; CERN-EP-2025-262. - 2025 - 47 p, 47.
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2025-12-20
04:04
Probing scalar and pseudoscalar new physics using rare kaon decays / D'Ambrosio, G. (INFN, Naples) ; Iyer, A.M. (Indian Inst. Tech., New Delhi) ; Mahmoudi, F. (IP2I, Lyon ; CERN ; ENS, Lyon, Lab. Phys.) ; Neshatpour, S. (IP2I, Lyon)
Rare kaon decays provide sensitive tests of new physics. [...]
CERN-TH-2025-254 ; arXiv:2512.16903. - 16.
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2025-12-20
04:03
Scalar damping in cosmological phase transitions / Ekstedt, Andreas (Uppsala U.) ; Konstandin, Thomas (DESY) ; van de Vis, Jorinde (CERN)
We outline how to calculate the scalar damping term during a cosmological phase transition from kinetic theory. [...]
DESY-25-195 ; CERN-TH-2025-262 ; arXiv:2512.16663. - 25.
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2025-12-20
04:03
Hadron Physics Opportunities at FAIR / Messchendorp, J.G. (Darmstadt, GSI) ; Nerling, F. (Darmstadt, GSI ; Frankfurt U., Inst. Kernphys. ; Helmholtz Res. Acad. Hesse for FAIR) ; Achenbach, P. (Jefferson Lab) ; Aichelin, J. (SUBATECH, Nantes ; Frankfurt U., FIAS) ; Albaladejo, M. (Valencia U., IFIC) ; An, L. (Peking U., SKLNPT) ; Aoki, K. (KEK, Tsukuba) ; Appagere, G. (Stockholm U. (main)) ; Baru, V. (Ruhr U., Bochum) ; Bashkanov, M. (U. York (main)) et al.
This White Paper outlines a coordinated, decade-spanning programme of hadron and QCD studies anchored at the GSI/FAIR accelerator complex. [...]
arXiv:2512.15986. - 281.
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2025-12-20
04:00
The Physics of Herwig 7 / Bellm, J. (Lund U.) ; Bewick, G. (Durham U., IPPP) ; Ferrario Ravasio, S. (Turin U. ; INFN, Turin) ; Gieseke, S. (KIT, Karlsruhe, TP) ; Grellscheid, D. (U. Bergen (main)) ; Kiebacher, S. (KIT, Karlsruhe, TP) ; Kirchgaeßer, P. (KIT, Karlsruhe, TP) ; Loshaj, F. (KIT, Karlsruhe, TP) ; Masouminia, M.R. (Durham U., IPPP) ; Nail, G. (U. Edinburgh (main)) et al.
We present the physics foundations and recent developments of Herwig 7, the modern successor of the original HERWIG and Herwig++ series. [...]
CERN-TH-2025-252 ; IPPP-25-57 ; HERWIG-2025-01 ; KA-TP-36-2025 ; MCNET-25-31 ; arXiv:2512.16645. - 195.
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2025-12-20
04:00
Charged black holes in the 1/N expansion / Obied, Georges (U. Oxford (main) ; U. Chicago (main)) ; Reig, Mario (Oxford U.(main) ; CERN)
We study some implications of $SU(N)\times U(1)$ theories coupled to gravity in the large-$N$ limit. [...]
CERN-TH-2025-256 ; arXiv:2512.15855. - 32.
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2025-12-19
16:51
Characterization of the quantum state of top quark pairs produced in proton-proton collisions at $ \sqrt{s}= $ 13 TeV using the beam and helicity bases / CMS Collaboration
Measurements of the spin correlation coefficients in the beam basis are presented for top quark-antiquark ($ \mathrm{t} \overline{\mathrm{t}} $) systems produced in proton-proton collisions at $ \sqrt{s}= $ 13 TeV collected by the CMS experiment in 2016-2018, and corresponding to an integrated luminosity of 138 fb$ ^{-1} $. [...]
arXiv:2512.17557 ; CMS-TOP-25-016 ; CERN-EP-2025-287 ; CMS-TOP-25-016-003. - 2025 - 31 p, 31.
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