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2026-04-12
16:41
Measurement of charged-particle production in $\sqrt{s_\text{NN}}=9.62$ TeV proton-oxygen collisions as a probe of cosmic-ray air showers with the ATLAS detector
This Letter presents a measurement of prompt charged-particle production in proton-oxygen interactions at $\sqrt{s_\text{NN}}=9.62$ TeV center-of-mass energy with the ATLAS detector, corresponding to 634 $\mu$b$^{-1}$ of integrated luminosity. [...]
CERN-EP-2026-106. - 2026
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2026-04-11
13:45
Formalizing Informal Communication: An Archaeology of the Early Pre-Web Preprint Infrastructure at CERN / Roth, Phillip H (RWTH Aachen U.)
This article deals with the early development of preprint communication in high-energy physics, specifically with how preprint communication was formalized in the early 1960s at the European Organization for Nuclear Research (CERN). [...]
arXiv:2507.12812. - 2026 - 19.
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2026-04-11
13:45
Joint LHCb--Belle II Prospects to Constrain New Physics in $B\to D^{(*)}τν$ / Albrecht, Johannes (Tech. U., Dortmund (main)) ; Bernlochner, Florian (U. Bonn (main)) ; Colonna, Marco (Tech. U., Dortmund (main)) ; Gärtner, Lorenz (LMU Munich (main)) ; Mathad, Abhijit (CERN) ; Mitreska, Biljana (Manchester U.) ; Prim, Markus (U. Bonn (main)) ; Tsaklidis, Ilias (U. Bonn (main))
Semileptonic $b\to cτ\barν_τ$ decays are powerful probes of non-Standard-Model effects within an effective-field-theory (EFT) framework, but fully exploiting them in current and future data demands combinations that maximise sensitivity while controlling biases from Standard-Model-based modelling and from theory inputs that are shared, and therefore correlated, across analyses in different experiments. [...]
arXiv:2604.00735. - 2026 - 16.
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2026-04-11
13:44
Prying Open the Dark Sector Window with SBND Off-Target Mode / Dutta, Bhaskar (TAMU, College Station) ; Goswami, Debopam (TAMU, College Station) ; Karthikeyan, Aparajitha (TAMU, College Station) ; Pandey, Vishvas (Fermilab) ; Tabrizi, Zahra (U. Pittsburgh (main) ; CERN) ; Thompson, Adrian (Northwestern U.) ; Van de Water, Richard G (Los Alamos)
Accelerator-based neutrino experiments with high-intensity proton beams and advanced detector technologies provide a powerful and complementary approach to probing physics beyond the Standard Model. [...]
arXiv:2603.25818 ; FERMILAB-PUB-26-0090-PPD ; MI-HET-879. - 2026 - 12.
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2026-04-11
05:28
Search for the lepton-flavour violating decays $B^+ \to \pi^+ \mu^\pm e^\mp$ / LHCb Collaboration
The first search for the lepton-flavour violating decays $B^+ \to π^+ μ^{\pm} e^{\mp}$ in proton-proton collisions is presented, using data collected by the LHCb experiment between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. [...]
arXiv:2604.08396 ; LHCb-PAPER-2026-013 ; CERN-EP-2026-093. - 21.
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2026-04-11
05:08
Lattice determination of the higher-order hadronic vacuum polarization contribution to the muon $g-2$ / Beltran, Arnau (U. Mainz, PRISMA) ; Conigli, Alessandro (Mainz U., Inst. Phys. ; Darmstadt, GSI) ; Kuberski, Simon (CERN) ; Meyer, Harvey B. (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; CERN) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Bonn U., HISKP) ; Wittig, Hartmut (U. Mainz, PRISMA ; Mainz U., Inst. Phys. ; Darmstadt, GSI)
We present the first lattice QCD calculation of the next-to-leading order (NLO) hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment with sub-percent precision. [...]
arXiv:2604.08351 ; MITP-26-017 ; CERN-TH-2026-080. - 10.
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2026-04-10
04:20
Euclid preparation. Non-Gaussianity of 2-pt statistics likelihood: Parameter inference with a non-Gaussian likelihood in Fourier and configuration space / Euclid Collaboration
In this work we account for this skewness in parameter inference by modelling the likelihood through an Edgeworth expansion which involves the complete skewness tensor, composed of 1-point, 2-point, and 3-point correlators. [...]
arXiv:2604.01309. - 25.
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2026-04-10
04:20
Spatial resolution improvement of PICOSEC Micromegas precise timing detectors / Brunbauer, F.M. (CERN) ; Aleksan, R. (IRFU, Saclay) ; Angelis, Y. (Aristotle U., Thessaloniki) ; Aune, S. (IRFU, Saclay) ; Bortfeldt, J. (LMU Munich (main)) ; Brunoldi, M. (Pavia U. ; INFN, Pavia) ; Datta, J. (Stony Brook U.) ; Desforge, D. (IRFU, Saclay) ; Fanourakis, G. (Democritos Nucl. Res. Ctr.) ; Fiorina, D. (Pavia U. ; INFN, Pavia ; GSSI, Aquila) et al.
The combination of a Cherenkov radiator with a semi-transparent photocathode and a Micromegas based amplification stage allows PICOSEC Micromegas detectors to achieve a time resolution of better than 15ps. [...]
arXiv:2603.18733. - 9.
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2026-04-10
04:19
A first study of strong isospin breaking effects in lattice QCD using truncated polynomials / Albandea, David (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Kuberski, Simon (CERN) ; Panadero, Fernando P. (Madrid, IFT)
Computing derivatives of observables with respect to parameters of the theory is a powerful tool in lattice QCD, as it allows the study of physical effects not directly accessible in the original Monte Carlo simulation. [...]
arXiv:2603.24420 ; MITP-26-015 ; CERN-TH-2026-059 ; IFT-UAM/CSIC-26-38. - 10.
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2026-04-10
04:09
The hadronic contribution to the running of the electroweak gauge couplings / Conigli, Alessandro (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; Djukanovic, Dalibor (Helmholtz Inst., Mainz ; Darmstadt, GSI) ; von Hippel, Georg (U. Mainz, PRISMA) ; Kuberski, Simon (CERN) ; Meyer, Harvey B. (Helmholtz Inst., Mainz ; U. Mainz, PRISMA ; CERN) ; Miura, Kohtaroh (KEK, Tsukuba) ; Ottnad, Konstantin (U. Mainz, PRISMA ; Bonn U. ; Bonn U., HISKP) ; Risch, Andreas (Wuppertal U.) ; Wittig, Hartmut (Helmholtz Inst., Mainz ; Darmstadt, GSI ; U. Mainz, PRISMA)
We present an updated determination of the hadronic vacuum polarization contribution to the running of the electromagnetic coupling $Δα_{\mathrm{had}}^{(5)}(-Q^2)$, and of the electroweak mixing angle in the space-like momentum range up to $12 \ \mathrm{GeV}^2$. [...]
arXiv:2603.29775. - 10.
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