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2025-12-05
14:06
Measurement of the branching fractions and longitudinal polarisations of $B^0_{(s)} \to K^{*0} \kern 0.18em \overline{\kern -0.18em K}{}^{*0}$ decays
A time- and flavour-integrated amplitude analysis of $B^0$ and $B^0_s$ decays to the $(K^+\pi^-)(K^-\pi^+)$ final state in the $K^*(892)^0 \kern 0.18em \overline{\kern -0.18em K}{}^{*}(892)^0$ region is presented, using $pp$ collision data recorded with the LHCb detector in 2011--2018, corresponding to an integrated luminosity of $9\,\text{fb}^{-1}$. [...]
CERN-EP-2025-265 ; arXiv:2512.05102 ; LHCB-PAPER-2025-046. - 2025
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2025-12-05
04:52
NNLO+NNLL Predictions for Heavy-Jet Mass and C-parameter in Higgs Decays to Quarks and Gluons / Fox, Elliot (Durham U., IPPP) ; Gehrmann-De Ridder, Aude (Zurich, ETH ; Zurich U.) ; Gehrmann, Thomas (Zurich U.) ; Glover, Nigel (Durham U., IPPP ; Zurich U. ; CERN) ; Marcoli, Matteo (Durham U., IPPP) ; Preuss, Christian T. (Gottingen U.)
We consider the resummation of large logarithmic corrections arising in the two-particle limit at next-to-next-to-leading logarithmic (NNLL) accuracy for the heavy-jet mass and $C$-parameter distributions in the decay of a Higgs boson to quarks and gluons: $H\to b\bar{b}$, $H\to c\bar{c}$, and $H\to gg$. [...]
IPPP/25/85 ; ZU-TH 82/25 ; MCNET-25-27 ; arXiv:2512.03263. - 11.
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2025-12-05
04:51
Jet Production at NNLO: Exploring a New Scheme / Buonocore, Luca ; Grazzini, Massimiliano ; Guadagni, Flavio ; Haag, Jürg (U. Bern, AEC) ; Kallweit, Stefan (Zurich U.) ; Rottoli, Luca (Milan Bicocca U. ; INFN, Milan Bicocca)
We consider dijet production in $e^+e^-$ collisions and in $H\to b{\bar b}$ decays at next-to-next-to-leading order (NNLO) in perturbative QCD. [...]
ZU-TH 83/25 ; CERN-TH-2025-232 ; arXiv:2512.03954. - 26.
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2025-12-04
06:02
Preliminary results from the CLEAR nonlinear plasma lens experiment / Drobniak, P (U. Oslo (main)) ; Adli, E (U. Oslo (main)) ; Anderson, H B (U. Oslo (main)) ; Sjobak, K N (U. Oslo (main)) ; Lindstrøm, C A (U. Oslo (main)) ; Dyson, A (U. Oxford (main)) ; Mewes, S M (DESY) ; Thévenet, M (DESY)
Plasma lensing provides compact focusing of electron beams, since they offer strong focusing fields (kT/m) in both planes simultaneously. [...]
arXiv:2505.21313. - 2025 - 4.
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2025-12-04
04:29
High-Resolution Laser Spectroscopy on the Hyperfine Structure of $^{255}$Fm (Z=100) / Urquiza-González, M. (U. Gothenburg (main)) ; Stemmler, M. (Mainz U. ; Leibniz U., Hannover) ; Albrecht, T.E. (Florida State U., Tallahassee (main)) ; Bally, B. (Darmstadt, Tech. U.) ; Bender, M. (IP2I, Lyon) ; Berndt, S. (Mainz U.) ; Block, M. (Mainz U. ; Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Brizard, A. (Darmstadt, GSI ; GANIL) ; Andrews, J.S. (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Bieron, J. (Jagiellonian U.) et al.
We report on high-resolution laser spectroscopy of $^{255}$Fm ($T_{1/2} = 20$h), one of the heaviest nuclides available from reactor breeding. [...]
arXiv:2511.20921. - 6.
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2025-12-04
04:26
High Density Hybridisation Using ENIG Bumping and Anisotropic Conductive Films / Bangaru, Haripriya (CERN) ; Calderini, Giovanni (LPNHE, Paris) ; Dannheim, Dominik (CERN) ; De Oliveira, Rui (CERN) ; Lale, Ahmet (CERN) ; Lauser, Moritz (KIT, Karlsruhe) ; Pinto, Mateus Vicente Barreto (Geneva U.) ; Svihra, Peter (CERN ; LPNHE, Paris)
Fine-pitch hybridisation processes are essential for next-generation pixel detectors and high-density microelectronic assemblies. [...]
arXiv:2511.15562. - 7.
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2025-12-04
04:25
hls4ml: A Flexible, Open-Source Platform for Deep Learning Acceleration on Reconfigurable Hardware / Schulte, Jan-Frederik (Purdue U.) ; Ramhorst, Benjamin (Zurich, ETH) ; Sun, Chang (Caltech) ; Mitrevski, Jovan (Fermilab) ; Ghielmetti, Nicolò (CERN) ; Lupi, Enrico (CERN) ; Danopoulos, Dimitrios (CERN) ; Lončar, Vladimir (Belgrade, Inst. Phys. ; CERN) ; Duarte, Javier (UC, San Diego (main)) ; Burnette, David (KETEK, Munich) et al.
We present hls4ml, a free and open-source platform that translates machine learning (ML) models from modern deep learning frameworks into high-level synthesis (HLS) code that can be integrated into full designs for field-programmable gate arrays (FPGAs) or application-specific integrated circuits (ASICs). [...]
arXiv:2512.01463. -
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2025-12-03
20:22
Performance and efficiency of a transformer-based quark/gluon jet tagger in the ATLAS experiment / ATLAS Collaboration
A deep-learning approach based on the transformer architecture is developed to distinguish between jets originating from quarks and gluons. [...]
arXiv:2512.03949 ; CERN-EP-2025-252. - 2025 - 50 p, 50.
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2025-12-03
04:49
Three-loop corrections to $gg\to ZH$ in the large top quark mass limit / Davies, Joshua (U. Liverpool (main)) ; Grau, Dominik (KIT, Karlsruhe) ; Schönwald, Kay (Zurich U.) ; Steinhauser, Matthias (KIT, Karlsruhe) ; Stremmer, Daniel (KIT, Karlsruhe)
We compute three-loop virtual corrections to the associated production of a Higgs boson with a $Z$ boson in the large-$m_t$ limit. [...]
CERN-TH-2025-245 ; P3H-25-101 ; TTP25-047 ; arXiv:2512.00156. - 15.
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2025-12-02
07:34
The Heavy Dark Photon Handbook: Cosmological and Astrophysical Bounds / Caputo, Andrea (CERN ; U. Rome La Sapienza (main) ; Weizmann Inst. ; INFN, Rome) ; Park, Jaeyoung (CERN ; Seoul Natl. U., Dept. Phys. Astron.) ; Yun, Seokhoon (IBS, Daejeon, CTPU)
We investigate cosmological and astrophysical constraints on dark photons with masses $\sim 10^{-1}$-$10^3$ MeV. [...]
arXiv:2511.15785 ; CTPU-PTC-25-42. - 2025 - 31.
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