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The Preprints collection aims to cover as far as possible all the grey literature in particle physics and its related technologies. The collection contains something like 400,000 documents, out of which about 50% can be accessed electronically. The documents originate from a variety of institutes all over the world. The collection, currently available, starts in 1979 and it has a full coverage of the arXiv.org e-Print archive since its beginning in 1991.
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Preprints

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2026-04-13
11:25
Search for the lepton-flavour violating decays $B^+\to \pi^+ \mu^\pm e^\mp$
The first search for the lepton-flavour violating decays $B^+ \to \pi^+ \mu^{\pm} e^{\mp}$ 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$^{-1}$. [...]
LHCb-PAPER-2026-013 ; CERN-EP-2026-093 ; arXiv:2604.08396 ; LHCB-PAPER-2026-013. - 2026 - 21.
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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. [...]
arXiv:2604.05512 ; CERN-EP-2026-106. - 2026 - 36.
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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
05:08
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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