Preprints

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2025-10-09
14:28
OpenAccess [PUBDB-2025-04280] Preprint
; ; ; et al
Measurement of time-dependent $CP$ asymmetries in $B^0 \to K_{\rm S}^0 \: π^{+} π^{-} γ$ decays at Belle and Belle II
[Belle II preprint: 2025-001; KEK preprint: 2024-49; arXiv:2510.01331]
We present a measurement of the time-dependent $CP$ asymmetry in $B^0 \to K_{\rm S}^0 \: π^{+} π^{-} γ$ decays using a data set of 365 fb$^{-1}$ recorded by the Belle II experiment and the final data set of 711 fb$^{-1}$ recorded by the Belle experiment at the ${\rm Υ(4S)}$ resonance. The direct and mixing-induced time-dependent $CP$ violation parameters $C$ and $S$ are determined along with two additional quantities, $S^{+}$ and $S^{-}$, defined in the two halves of the $m^2(K_{\rm S}^0 π^{+})-m^2(K_{\rm S}^0 π^{-})$ plane. [...]
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2025-10-09
14:25
OpenAccess [PUBDB-2025-04279] Preprint
; ; ; et al
Search for $CP$ violation in $Ξ_c^+\toΣ^+h^+h^-$ and $Λ_c^+\to ph^+h^-$ at Belle II
[Belle II Preprint 2025-024; KEK Preprint 2025-26; arXiv:2509.25765]
We report decay-rate $CP$ asymmetries of the singly-Cabibbo-suppressed decays $Ξ_c^+\toΣ^+h^+h^-$ and $Λ_c^+\to ph^+h^-$, with $h=K,π$, measured using 428 fb$^{-1}$ of $e^+e^-$ collisions collected by the Belle II experiment at the SuperKEKB collider. The results, \begin{equation} A_{CP}(Ξ_c^+\toΣ^+K^+K^-) = (3.7\pm6.6\pm0.6)\%, \end{equation}\begin{equation} A_{CP}(Ξ_c^+\toΣ^+π^+π^-) = (9.5\pm6.8\pm0.5)\%, \end{equation}\begin{equation} A_{CP}(Λ_c^+\to pK^+K^-) = (3.9\pm1.7\pm0.7)\%, \end{equation}\begin{equation} A_{CP}(Λ_c^+\to pπ^+π^-) = (0.3\pm1.0\pm0.2)\%, \end{equation} where the first uncertainties are statistical and the second systematic, agree with $CP$ symmetry. [...]
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2025-10-09
14:22
arXiv [PUBDB-2025-04278] Preprint
; ; ; et al
Search for $e^+ e^- \to \gamma X_{bJ}$ ($J$ = 0, 1, 2) near $\sqrt{s}$ = 10.746 GeV at Belle II
[Belle II Preprint 2025-022; KEK Preprint 2025-21; arXiv:2508.16036]
 GO
We search for the $e^+ e^- \to γχ_{bJ}$ ($J$ = 0, 1, 2) processes at center-of-mass energies $\sqrt{s}$ = 10.653, 10.701, 10.746, and 10.804 GeV. These data were collected with the Belle II detector at the SuperKEKB collider and correspond to 3.5, 1.6, 9.8, and 4.7 fb$^{-1}$ of integrated luminosity, respectively. [...]
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2025-09-29
10:13
[PUBDB-2025-04130] Preprint
; ; ; et al
Position-Blind Ptychography: Viability of image reconstruction via data-driven variational inference
 GO
In this work, we present and investigate the novel blind inverse problem of \emph{position-blind ptychography}, i.e., ptychographic phase retrieval without any knowledge of scan positions, which then must be recovered jointly with the image. The motivation for this problem comes from single-particle diffractive X-ray imaging, where particles in random orientations are illuminated and a set of diffraction patterns is collected. [...]

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2025-09-25
16:53
OpenAccess [PUBDB-2025-04099] Preprint
; ; ; et al
Cost for research -- how cost data of research can be included in open metadata to be reused and evaluated
arXiv () [10.48550/ARXIV.2506.18517]  GO
The openCost project aims to enhance transparency in research funding by making publication-related costs publicly accessible, following FAIR principles. It introduces a metadata schema for cost data, allowing aggregation and analysis across institutions. [...]
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2025-09-24
10:19
OpenAccess [PUBDB-2025-04077] Preprint

Monte Carlo Event Generators
[DESY-25-130; arXiv:2509.21611]
Monte Carlo event generators are in a modern terminology the digital twins of collider-based particle physics experiment. We give an introduction into the application of MC generators for particle physics, discuss their different components each simmulating a different aspect of physics. [...]

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2025-09-19
13:25
arXiv [PUBDB-2025-04038] Preprint
; ; ; et al
Measurements of ttW differential cross sections and the leptonic charge asymmetry at $\sqrt{s}$ = 13 TeV
[CERN-EP-2025-170; CMS-TOP-24-003; arXiv:2509.13512]
 GO
Measurements of properties of top quark-antiquark pair production in association with a W boson in proton-proton collisions at a center-of-mass energy of 13 TeV are presented, using a data sample corresponding to an integrated luminosity of 138 fb$^{-1}$, recorded by the CMS experiment at the CERN LHC. Events are selected based on the presence of either two leptons with the same electric charge or three leptons, and multiple jets and b-tagged jets. [...]
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2025-09-19
13:23
arXiv [PUBDB-2025-04037] Preprint
; ; ; et al
Search for resonances decaying to an anomalous jet and a Higgs boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2025-190; CMS-B2G-24-015; arXiv:2509.13635]
 GO
This paper presents a search for new physics through the process where a new massive particle, X, decays into a Higgs boson and a second particle, Y. The Higgs boson subsequently decays into a bottom quark-antiquark pair, reconstructed as a single large-radius jet. [...]
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2025-09-19
13:21
arXiv [PUBDB-2025-04036] Preprint
; ; ; et al
DeepMET: Improving missing transverse momentum estimation with a deep neural network
[CERN-EP-2025-193; CMS-JME-24-001; arXiv:2509.12012]
 GO
At hadron colliders, the net transverse momentum of particles that do not interact with the detector (missing transverse momentum, $\vec{p}_\mathrm{T}^\text{miss}$) is a crucial observable in many analyses. In the standard model, $\vec{p}_\mathrm{T}^\text{miss}$ originates from neutrinos. [...]
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2025-09-19
13:18
arXiv [PUBDB-2025-04035] Preprint
; ; ; et al
Measurement of D$^0$ meson photoproduction in ultraperipheral heavy ion collisions
[CERN-EP-2025-095; CMS-HIN-24-003; arXiv:2509.08626]
 GO
This Letter reports the first measurement of photonuclear D$^0$ meson production in ultraperipheral heavy ion collisions. The study is performed using lead-lead collision data, with an integrated luminosity of 1.38 nb$^{-1}$, collected by the CMS experiment at a nucleon-nucleon center-of-mass energy of 5.36 TeV. [...]
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