Tootfinder

The Evolution of Pop III.1 Protostars Powered by Dark Matter Annihilation. I. Fiducial model and first results
Devesh Nandal, Konstantinos Topalakis, Jonathan C. Tan, Vasilisa Sergienko, Ana\"is Pauchett, Maya Petkova
https://arxiv.org/abs/2507.00870

The Evolution of Pop III.1 Protostars Powered by Dark Matter Annihilation. I. Fiducial model and first results
The existence of billion-solar-mass quasars at redshifts $z \gtrsim 7$ poses a formidable challenge to theories of black hole formation, requiring pathways for the rapid growth of massive seeds. Population III.1 stars, forming in pristine, dense dark matter (DM) minihalos, are compelling progenitors. This study presents a suite of stellar evolution models for accreting Pop III.1 protostars, calculated with the \textsc{GENEC} code. We systematically explore a wide parameter space, spanning ambie…

Parton-shower and fixed-order QCD effects in Higgs-boson production in weak-boson fusion and its decays to bottom quarks
Arnd Behring, Kirill Melnikov, Ivan Novikov, Giulia Zanderighi
https://arxiv.org/abs/2507.01448

Parton-shower and fixed-order QCD effects in Higgs-boson production in weak-boson fusion and its decays to bottom quarks
Recently, it was observed [arXiv:2407.09363] that an aggressive cut on the $b$-jets' transverse momenta applied to Higgs-boson production in weak-boson fusion followed by the decay $H \to b \bar b$, leads to very large QCD corrections to the fiducial cross section. In this paper we show that these corrections are caused by soft and collinear QCD radiation and, therefore, can be efficiently treated by a parton shower. We combine the parton-shower description of the decay $H \to b \bar b$ with NN…

FedCLAM: Client Adaptive Momentum with Foreground Intensity Matching for Federated Medical Image Segmentation
Vasilis Siomos, Jonathan Passerat-Palmbach, Giacomo Tarroni
https://arxiv.org/abs/2506.22580

FedCLAM: Client Adaptive Momentum with Foreground Intensity Matching for Federated Medical Image Segmentation
Federated learning is a decentralized training approach that keeps data under stakeholder control while achieving superior performance over isolated training. While inter-institutional feature discrepancies pose a challenge in all federated settings, medical imaging is particularly affected due to diverse imaging devices and population variances, which can diminish the global model's effectiveness. Existing aggregation methods generally fail to adapt across varied circumstances. To address this…

The origin of the metallicity difference between star-forming and passive galaxies: Insights from {\nu}2GC semi-analytic model
Qiansheng Liu, Takashi Okamoto, Taira Oogi, Masahiro Nagashima
https://arxiv.org/abs/2506.00378

The origin of the metallicity difference between star-forming and passive galaxies: Insights from ν2GC semi-analytic model
We investigate the origin of the observed metallicity difference between star-forming and passive galaxies using the semi-analytic galaxy formation model nu2GC. Our fiducial model successfully reproduces the observed metallicity differences in local galaxies while simultaneously matching the potential-metallicity relations of both star-forming and passive galaxies. By varying the star formation efficiency, we identify strangulation as the primary driver of the metallicity difference. This findi…

Detection of Molecular Hydrogen in a Proton Trap
J. Caylor (Thomas Jefferson National Accelerator Facility, Newport News USA), R. Biswas (Tulane University, New Orleans USA), B. Crawford (Gettysburg College, Gettysburg USA), M. S. Dewey (National Institute of Standards and Technology, Gaithersburg USA), N. Fomin (University of Tennessee, Knoxville USA), G. L. Greene (University of Tennessee, Knoxville USA, Tulane University, New Orleans USA), S. F. Hoogerheide (National Institute of St…

Detection of Molecular Hydrogen in a Proton Trap
One method of determining the free neutron lifetime involves the absolute counting of neutrons and trapped decay protons. In such experiments, a cold neutron beam traverses a segmented proton trap inside a superconducting solenoid while the neutron flux is continuously monitored. Protons that are born within the fiducial volume of the trap are confined radially by the magnetic field and axially by the electrostatic potential supplied by trap electrodes. They are periodically released and counte…

Nochmal wegen grauenvoll beim Hochladen veränderter Fotoqualität:
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Handgemalte #wandklexschmuck Galaxien, kurz vor der endgültigen Weiterverarbeitung.

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https://bigpauper.bandcamp.com/track/idioteque-calisthenics-ft-gift-of-gab-cut-chemist
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This https://arxiv.org/abs/2410.17698 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

ProGeny II: the impact of libraries and model configurations on inferred galaxy properties in SED fitting
We use a volume-complete sample of ~8,000 galaxies from the GAMA survey to characterise the impact of stellar population libraries (SPLs) and model configurations on the resulting inferred galaxy properties from Spectral Energy Distribution (SED) fitting. We compare a fiducial SPL from ProGeny (a new tool that can generate SPLs quickly and flexibly) against five other commonly used SPLs using the SED-fitting code ProSpect. The impact of selecting each SPL is compared to the consequence of chang…