Preprints

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2025-12-18
15:51
OpenAccess [PUBDB-2025-05722] Preprint
; ; ; et al
A first determination of the LHC neutrino fluxes from FASER data
[UCI-TR-2025-14; arXiv:2507.06022]
The detection of TeV neutrinos from the LHC by the far-forward detectors FASER and SND@LHC enables a plethora of novel physics opportunities. Among these, the measurement of the flavour, energy, and rapidity dependence of the LHC forward neutrino fluxes provides unique constraints on theoretical predictions of forward particle production in hadronic collisions. [...]
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2025-12-18
15:12
OpenAccess [PUBDB-2025-05717] Preprint
; ; ; et al
Virtual pulse reconstruction diagnostic for single-shot measurement of free electron laser radiation power
[arXiv:2411.17644]
Accurate characterization of radiation pulse profiles is crucial for optimizing beam quality and enhancing experimental outcomes in free electron laser (FEL) research. In this paper, we present a unique approach that employs machine learning techniques for real-time virtual diagnostics of FEL radiation pulses. [...]
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2025-12-18
15:04
OpenAccess [PUBDB-2025-05715] Preprint
; ; ; et al
Cosmic ray transport and acceleration with magnetic mirroring
[arXiv:2504.06140]
We analyse the transport of cosmic rays (CR) in magnetic fields that are structured on scales greater than the CR Larmor radius. We solve the Vlasov–Fokker–Planck equation for various mixes of mirroring and small-angle scattering and show that relatively small deviations from a uniform magnetic field can induce mirroring and inhibit CR transport to levels that mimic Bohm diffusion in which the CR mean-free path is comparable with the CR Larmor radius. [...]
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2025-12-18
12:20
OpenAccess [PUBDB-2025-05704] Preprint
; ; ; et al
Measurement of inclusive $B \to X_u \ell ν$ partial branching fractions and $|V_{ub}|$ at Belle II
[arXiv:2512.08056]
A sample of 365 fb$^{-1}$ of $e^+e^- \to Υ(4S) \to B\bar{B}$ data collected by the Belle II experiment is used to measure the partial branching fractions of charmless semileptonic $B$ meson decays and determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $V_{ub}$. Events containing a signal electron or muon $\ell$ and a fully reconstructed hadronic $B$ decay that constrains the signal kinematics are selected, while the rest of the event defines the hadronic system $X_u$ associated with the signal. [...]
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2025-12-18
10:10
arXiv [PUBDB-2025-05695] Preprint
; ; ; et al
All-sky Neutrino Point-source Search with IceCube Combined Track and Cascade Data
[arXiv:2507.07275]
 GO
Despite extensive efforts, discovery of high-energy astrophysical neutrino sources remains elusive. We present an event-level simultaneous maximum likelihood analysis of tracks and cascades using IceCube data collected from 2008 April 6 to 2022 May 23 to search the whole sky for neutrino sources, and using a source catalog, for coincidence of neutrino emission with gamma-ray emission. [...]
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2025-12-18
10:07
OpenAccess [PUBDB-2025-05694] Preprint
; ; ; et al
Measurement of Z$γ$ production in proton-proton collisions at $\sqrt{s}$ = 13.6 TeV and constraints on neutral triple gauge couplings
[CERN-EP-2025-232; CMS-SMP-24-002; arXiv:2512.08582]
A measurement of the Z$γ$ production cross section in proton-proton collisions at a center-of-mass energy of 13.6 TeV is presented. Data corresponding to an integrated luminosity of 34.8 fb$^{-1}$, collected by the CMS experiment at the LHC in 2022 are used. [...]
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2025-12-18
09:57
arXiv [PUBDB-2025-05692] Preprint
; ; ; et al
Robust semi-parametric signal detection in particle physics with classifiers decorrelated via optimal transport
[arXiv:2409.06399]
 GO
Searches for signals of new physics in particle physics are usually done by training a supervised classifier to separate a signal model from the known Standard Model physics (also called the background model). However, even when the signal model is correct, systematic errors in the background model can influence supervised classifiers and might adversely affect the signal detection procedure. [...]
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2025-12-17
10:13
arXiv [PUBDB-2025-05639] Preprint
; ; ; et al
Time-Dependent Modeling of the Sub-Hour Spectral Evolution During the 2013 Outburst of Mrk 421
[arXiv:2509.08686]
 GO
In April 2013, the TeV blazar Markarian~421 underwent one of its most powerful emission outbursts to date. An extensive multi-instrument campaign featuring MAGIC, VERITAS, and \textit{NuSTAR} provided comprehensive very-high-energy (VHE; $E > 100$ GeV) and X-ray coverage over nine consecutive days. [...]
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2025-12-16
13:27
[PUBDB-2025-05599] Preprint
; ; ; et al
The inner-shell ionization and fragmentation of selenophene at 120 eV
Three-dimensional velocity-map imaging and covariance analysis were used to identify over 50 fragmentation channels produced following the inner-shell ionization of selenophene at 120 eV. The majority resulted in two or three 'heavy' products containing selenium or carbon, many of which had identical mass-to-charge ratios but different chemical compositions due to the degree of hydrogenation and the selenium isotope involved. [...]
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2025-12-16
13:12
[PUBDB-2025-05595] Preprint
; ; ; et al
In-situ Diffraction Crystallization Study of a porous Ti(IV) oxo-cluster carboxylate MOF and its Water-Induced Ti(III) Formate
The in-situ crystallization kinetics of the highly porous Ti(IV)12 oxo-cluster based metal-organic framework (MOF) MIP-177(Ti)-LT (MIP: Materials from Institute of porous solids of Paris, LT: Low Temperature) were studied by synchrotron time-resolved powder X-ray diffraction. When dry formic acid (FA) was used as solvent the crystallization does follow the Johnson-Mehl-Avrami-Kolmogorov kinetics with an energy barrier of 74 kJ·mol-1 without any observed intermediate crystalline phases. [...]
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