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2026-03-04
04:41
The two-mass contributions to the three-loop massive operator matrix elements ${\widetilde{A}}_{Qg}^{(3)}$ and ${\Delta \widetilde{A}}_{Qg}^{(3)}$ / Ablinger, J. (Linz U. ; Linz U., RISC) ; Blümlein, J. (DESY, Zeuthen ; Dortmund U.) ; De Freitas, A. (Linz U. ; Linz U., RISC) ; von Manteuffel, A. (U. Regensburg (main)) ; Schneider, C. (Linz U. ; Linz U., RISC) ; Schönwald, K. (Zurich U. ; CERN)
We calculate the two-mass three-loop contributions to the unpolarized and polarized massive operator matrix elements $\tilde{A}_{Qg}^{(3)}$ and $Δ\tilde{A}_{Qg}^{(3)}$ in $x$-space for a general mass ratio by using a semi-analytic approach. We also compute Mellin moments up to $N = 2000 (3000)$ by an independent method, to which we compare the results in $x$-space. [...]
arXiv:2510.09403; DO-TH 23/16; DESY 25-125; RISC Report series 25-07; ZU-TH 66/25.- 2026-01-16 - 50 p. - Published in : JHEP 2601 (2026) 111 Fulltext: 2510.09403 - PDF; document - PDF;

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2026-03-03
07:30
Particle production and collectivity from small to large collision systems / Corredoira, Imanol (IRFU, Saclay, DPHN) /ALICE Collaboration ; ATLAS Collaboration ; CMS Collaboration ; LHCb Collaboration
2025 - Published in : PoS LHCP2025 (2025) 128 Fulltext: PDF;
In : 13th Edition of the Large Hadron Collider Physics Conference (LHCP2025), Taipei, Tw, 5 - 9 May 2025, pp.128

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2026-02-26
07:32
Neutral Meson Production Results in ${pp}$, ${p}$–Pb and Pb–Pb Collisions in ALICE / Averyanov, D A (Kurchatov Inst., Moscow) /ALICE Collaboration
In high-energy hadronic collisions neutral meson spectra can be measured with high precision in a wide range of transverse momenta, providing valuable input for the nucleon structure functions parametrization and for studying in great detail the cold and hot matter effects. The main decay modes of neutral mesons include photons in the final state. [...]
2026 - 12 p. - Published in : Phys. At. Nucl. 88 (2025) 993-1004

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2026-02-26
07:32
Physics of the Standard Model in the CMS Experiment at the LHC / Shalaev, V V (Dubna, JINR ; Dubna Intl. Univ.) ; Shmatov, S V (Dubna, JINR ; Dubna Intl. Univ.) /CMS Collaboration
The paper presents a review of the most essential results of the Standard Model physics studies based on the data recorded by the CMS detector at the Large Hadron Collider during the LHC RUN1 and RUN2..
2023 - 4 p. - Published in : Phys. Part. Nucl. 54 (2023) 425-428

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2026-02-26
07:31
Measurements of enriched $^{155}$Gd and $^{157}$Gd converters with the NMX detector on the n_TOF EAR2 beam line at CERN / Pfeiffer, D (ESS, Lund ; CERN ; Unlisted) ; Brunbauer, F M (CERN) ; Fehse, I R (CERN ; Unlisted) ; Finke, A D (ESS, Lund) ; Fissum, K (ESS, Lund) ; Floethner, K J (CERN) ; Janssens, D (CERN) ; Lisowska, M (CERN) ; Muller, H (CERN ; Unlisted) ; Oksanen, E (ESS, Lund) et al.
The detectors for the NMX instrument at the European Spallation Source (ESS) in Lund use natural Gd as the neutron converter. In 2024, beam time was obtained at the neutron time-of flight experiment (nTOF) at CERN to study the feasibility of an upgrade to enriched Gd. [...]
arXiv:2507.20756.- 2026 - 19 p. - Published in : JINST 21 (2026) P02011 Fulltext: 2507.20756 - PDF; document - PDF;

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2026-02-26
07:31
CaloHadronic: a diffusion model for the generation of hadronic showers / Buss, Thorsten (Hamburg U. ; DESY) ; Gaede, Frank (DESY) ; Kasieczka, Gregor (Hamburg U.) ; Korol, Anatolii (DESY) ; Krüger, Katja (DESY) ; McKeown, Peter (CERN) ; Mozzanica, Martina (Hamburg U.)
Simulating showers of particles in highly-granular calorimeters is a key frontier in the application of machine learning to particle physics. Achieving high accuracy and speed with generative machine learning models can enable them to augment traditional simulations and alleviate a major computing constraint. [...]
arXiv:2506.21720.- 2026 - 33 p. - Published in : JINST 21 (2026) P01042 Fulltext: 2506.21720 - PDF; document - PDF;

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2026-02-26
07:31
Post long shutdown 2 CERN proton synchrotron transverse impedance model: Description and beam-based validation / Joly, Sébastien (U. Rome La Sapienza (main)) ; Migliorati, Mauro (INFN, Rome) ; Mounet, Nicolas (CERN) ; Salvant, Benoît (CERN)
In the framework of the LHC Injectors Upgrade project, the CERN Proton Synchrotron underwent hardware changes during the Long Shutdown 2. These changes required an update of the CERN Proton Synchrotron impedance model and an assessment of their impact on beam quality. [...]
arXiv:2505.09328.- 2026 - 19 p. - Published in : Phys. Rev. Accel. Beams 29 (2026) 024201 Fulltext: 2505.09328 - PDF; document - PDF;

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2026-02-25
06:55
EMP: a common infrastructure firmware framework for the CMS phase-2 upgrades / Adamidis, Kosmas (UCLA) ; Ardila-Perez, Luis (KIT, Karlsruhe, IPE) ; Bestintzanos, Ioannis (Ioannina U.) ; Cholak, Serhii (Boston U.) ; Fulcher, Jonathan (Boston U.) ; Hahn, Kristian (Northwestern U.) ; Howard, Alex (Imperial Coll., London) ; Iles, Gregory (Imperial Coll., London) ; Krause, Hendrik (KIT, Karlsruhe, IPE) ; Linacre, Jacob (Rutherford) et al.
In its phase-2 upgrades, all of the CMS experiment's off-detector electronics systems willbe replaced by ATCA boards featuring Xilinx UltraScale+ FPGAs and high-speedoptical modules. The various off-detector electronics systemshave different high-level purposes and I/O requirements, e.g. [...]
2026 - 7 p. - Published in : JINST 21 (2026) C02019 Fulltext: PDF;
In : Topical Workshop on Electronics for Particle Physics 2025, Rethymno, Crete, Greece, 6 - 10 Oct 2025, pp.C02019

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2026-02-25
06:55
Observation of tt¯γγ production at s=13 TeV with the ATLAS detector /ATLAS Collaboration
This paper presents the first observation of top-quark pair production in association with two photons (tt¯γγ). The measurement is performed in the single-lepton decay channel using proton-proton collision data collected by the ATLAS detector at the Large Hadron Collider. [...]
2026 - Published in : Phys. Lett. B 874 (2026) 140195

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2026-02-25
06:55
High-Performance and Scalable Agent-Based Simulation with BioDynaMo / Breitwieser, Lukas (CERN) ; Hesam, Ahmad (Delft Tech. U.) ; Rademakers, Fons (CERN) ; Luna, Juan Gómez (ETH, Zurich (main)) ; Mutlu, Onur (ETH, Zurich (main))
Agent-based modeling plays an essential role in gaining insights into biology, sociology, economics, and other fields. However, many existing agent-based simulation platforms are not suitable for large-scale studies due to the low performance of the underlying simulation engines [...]
2023 - 15 p. - Published in : Phys. Teach. 61 (2023) 174-188 Fulltext: PDF;
In : 28th ACM SIGPLAN Annual Symposium on Principles and Practices of Parallel Programming, Montreal, Canada, 25 Feb - 1 Mar 2023, pp.174-188

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