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2026-04-27
15:52
EM Shower Reconstruction and Identification at FASERnu / Wang, Yuxiao (Tsinghua University (CN)) ; Inada, Tomohiro (Kyushu University (JP)) /FASER Collaboration
We present methods for electromagnetic (EM) shower reconstruction and identification (Reco&ID;) in the FASERnu emulsion detector using 100 GeV and 200 GeV electron test-beam data from the CERN SPS H4 beamline. The reconstruction employs adaptive DBSCAN clustering with sequential centroid validation and robust Huber fitting to determine shower axes without energy-dependent parameter tuning. [...]
CERN-FASER-2026-001.- Geneva : CERN, 2026 - Published in : twiki version 1: PDF;

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2026-04-27
15:50
Measurement of jet photoproduction in ultra-peripheral Pb+Pb collisions without nuclear breakup at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV with the ATLAS detector
In ultra-relativistic heavy ion collisions at the LHC, each nucleus acts as a source of high-energy quasi-real photons that can participate in scattering processes without causing either participating nucleus to break up and emit forward neutrons. [...]
CERN-EP-2026-125. - 2026
Fulltext - Previous draft version

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2026-04-27
12:05
Angular analysis of the $B^+ \to \pi^+ \mu^+ \mu^-$ decay
This paper presents the first measurement of the forward-backward asymmetry, $A_{\rm FB}$, and the flat term, $F_{H}$, that parameterise the angular distribution of the $B^+\to\pi^+\mu^+\mu^-$ decay. [...]
CERN-EP-2026-105 ; arXiv:2604.21987 ; LHCB-PAPER-2026-015. - 2026
Fulltext - Related data file(s) - Full text

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2026-04-27
09:18
Observation of a new excited charm-strange meson $D_{s1}(2933)^+$ in $B^0 \to D^+D^-K^+\pi^-$ decays
A new excited charm-strange meson is observed through an amplitude analysis of the full phase space of $B^0\to D^+ D^- K^+ \pi^-$ decays. [...]
CERN-EP-2026-065 ; arXiv:2604.21257 ; LHCB-PAPER-2025-073. - 2026
Fulltext - Related data file(s)

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2026-04-25
06:00
Radiation effects on the entanglement of fermion pairs at colliders / Aoude, Rafael (U. Edinburgh (main)) ; Camacho, José Manuel (Valencia U., IFIC) ; Durupt, Valentin (Louvain U., CP3) ; García-Mir, Guillermo (Valencia U., IFIC) ; Maltoni, Fabio (Louvain U., CP3 ; Bologna U. ; INFN, Bologna ; CERN) ; Moreno Llácer, María (Valencia U., IFIC) ; Satrioni, Leonardo (Louvain U., CP3) ; Vos, Marcel (Valencia U., IFIC)
We study the impact of radiation on quantum systems defined by the spins of elementary fermion-antifermion pairs produced at colliders. [...]
arXiv:2604.16268. - 2026 - 5.
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2026-04-25
04:22
Observation of a new excited charm-strange meson $D_{s1}(2933)^+$ in $B^0\to D^+ D^- K^+ \pi^-$ decays / LHCb Collaboration
A new excited charm-strange meson is observed through an amplitude analysis of the full phase space of $B^0\to D^+ D^- K^+ π^-$ decays. [...]
arXiv:2604.21257 ; LHCb-PAPER-2025-073,CERN-EP-2026-065. - 24.
Fulltext

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2026-04-25
04:16
Search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark-antiquark pair in proton-proton collisions at $\sqrt{s}$ = 13 TeV / CMS Collaboration
A search for dark matter produced in association with a dark Higgs boson decaying into a bottom quark-antiquark pair has been performed using proton-proton collision data at a center-of-mass energy of 13 TeV. [...]
arXiv:2604.20999 ; CMS-SUS-23-013 ; CERN-EP-2026-087. -
Fulltext

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2026-04-24
14:21
Fabrication and characterization of Triple GEM detectors for HEP experiments / Giri Raj Mohan Sharma ; Dhingra, Nitish (Panjab U.) ; Chauhan, Sushil Singh (Panjab U.) ; Bhatnagar, Vipin (Panjab U.) /CMS Collaboration
Gas Electron Multiplier (GEM) detectors are advanced micro-pattern gaseous devices designed for particle detection in harsh radiation environments. The central feature of GEM detector is a thin metal-clad polymer (usually Kapton) foil chemically etched with a high density of microscopic bi-conical holes, where each hole acts as an individual proportional amplifier. [...]
CMS-CR-2026-021.- Geneva : CERN, 2026 - 10 p. Fulltext: PDF;
In : National Conference on Advanced Instrumentation for Nuclear Physics, High-Energy Physics, and Medical Imaging, Gaya, India, 23 - 25 mar 2026

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2026-04-24
07:30
Effective field theory interpretation of ATLAS measurements involving the Higgs boson, electroweak bosons and the top quark / ATLAS Collaboration
Wilson coefficients in dimension-six effective field theory are constrained in a combined fit to several ATLAS measurements. [...]
arXiv:2604.21670 ; CERN-EP-2026-113. - 2026 - 65.
Fulltext - Previous draft version - Fulltext

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2026-04-24
04:29
Crosscap Defects / Drukker, Nadav (King's Coll. London (main)) ; Komatsu, Shota (CERN) ; Wallberg, Anders (CERN ; EPFL, Lausanne, LTFP)
We introduce a novel class of defects, termed {\it crosscap defects}, in conformal field theory (CFT) in general dimensions. [...]
CERN-TH-2026-095 ; arXiv:2604.19868. - 50.
Fulltext

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