Wed·May 14, 2025Wednesday·May 14, 2025

1. 01*

   Measurement of the Total Compton Scattering Cross Section between 6.5 and 11 GeV

   GlueX Collaboration · F. Afzal · C. S. Akondi · M. Albrecht · M. Amaryan · S. Arrigo · V. Arroyave · A. Asaturyan · A. Austregesilo · Z. Baldwin · F. Barbosa · J. Barlow and 139 other authors

   The total cross section for Compton scattering off atomic electrons, $\gamma +e\to {\gamma }^{\prime }+e^{\prime }$, was measured using photons with energies between 6.5 and 11.1 GeV incident on a ${}^9$Be target as part of the PrimEx-eta experiment in Hall D at Jefferson Lab. This is the first measurement of this fundamental QED process within this energy range. The total uncertainties of the cross section, combining the statistical and systematic components in quadrature, averaged to 3.4% across all energy bins. This not only demonstrates the capability of this experimental setup to perform precision cross-section measurements at forward angles but also allows us to compare with state-of-the-art QED calculations.

   nucl-exhep-exPLB(2025)·4 citations
2. 02*

   Improved ion bunch quality of conical target irradiated by ultra-intense and ultra-short laser

   Wan-Qing Su · Xi-Guang Cao · Chun-Wang Ma🇨🇳 · Guo-Qiang Zhang · Hui-Ling Wei🇨🇳 · Yu-Ting Wang · Chun-Yuan Qiao · Jie Pu🇨🇳 · Kai-Xuan Cheng🇹🇼 · Ya-Fei Guo🇨🇳

   We conduct particle-in-cell simulations to estimate the effects of circularly and linearly polarized SEL 100 PW lasers on flat Th targets with thicknesses of 50 nm, 100 nm and 250 nm, as well as easy to manufacture conical Th targets with angularity either on the left or right. As the thickness of the three types of targets increases and under the same polarized laser, the average energy, maximum energy and energy conversion efficiency of Th ions decrease as it is well-known, and except for the circularly polarized laser hit on the conical target with angularity on the left, the Th ion beam emittance also decreases, while its beam intensity increases conversely. The linearly polarized laser, compared to the circularly polarized laser with the same laser intensity, exhibits higher beam intensity, beam emittance and energy conversion efficiency for the same type and thickness of Th target. The conical Th target with angularity on the left and intermediate thickness, compared to the flat target and conical target with angularity on the right of the same thickness, possesses both higher ion average energy up to 7 GeV and virtually the same beam intensity up to 0.8 MA under the linearly polarized laser. The results lead us to an easier way of controlling laser-accelerated high-quality heavy ion beam by switching to an optimal laser-target configuration scheme, which may enable the synthesis of superheavy nuclei in a high-temperature and high-density extreme plasma environment in astronuclear physics.

   ↳ physics.plasm-phnucl-exFront.Phys.(Beijing)(2025)·1 citation
3. 03*

   Towards Foundation Models for Experimental Readout Systems Combining Discrete and Continuous Data

   James Giroux🇺🇸 · Cristiano Fanelli🇺🇸

   We present a (proto) Foundation Model for Nuclear Physics, capable of operating on low-level detector inputs from Imaging Cherenkov Detectors at the future Electron Ion Collider. Building upon established next-token prediction approaches, we aim to address potential challenges such as resolution loss from existing tokenization schemes and limited support for conditional generation. We propose four key innovations: (i) separate vocabularies for discrete and continuous variates, combined via Causal Multi-Head Cross-Attention (CMHCA), (ii) continuous kinematic conditioning through prepended context embeddings, (iii) scalable and simple, high-resolution continuous variate tokenization without joint vocabulary inflation, and (iv) class conditional generation through a Mixture of Experts. Our model enables fast, high-fidelity generation of pixel and time sequences for Cherenkov photons, validated through closure tests in the High Performance DIRC. We also show our model generalizes to reconstruction tasks such as pion/kaon identification, and noise filtering, in which we show its ability to leverage fine-tuning under specific objectives.

   ↳ cs.LGhep-exnucl-exphysics.ins-detMach.Learn.Sci.Tech.(2026)·6 citations
4. 04*

   Electron-Ion Collider as a Discovery Tool for Invisible Dark Bosons

   Hooman Davoudiasl🇺🇸 · Hongkai Liu🇺🇸

   We illustrate how the future Electron-Ion Collider (EIC) can be used to discover dark bosons with masses in the $\sim$ (10~MeV -- 10~GeV) regime, having a wide range of properties. We only require that the dark bosons have a non-negligible weak coupling to electrons and decay with $\text{ord}1$ branching fraction into invisible final states. Our signal selection takes advantage of the excellent electron beam kinematic measurements and the capability to tag incoherent scattering, as envisioned at the EIC. This makes the EIC a powerful tool for uncovering potential dark sector forces, for a variety of possibilities.

   ↳ hep-phhep-exnucl-exPRD(2025)·6 citations
5. 05*

   The detection of marine microseismic activity with the CUORE tonne-scale cryogenic experiment

   D. Q. Adams · C. Alduino · K. Alfonso · A. Armatol · F. T. Avignone · O. Azzolini · G. Bari · F. Bellini · G. Benato · M. Beretta · M. Biassoni · A. Branca and 117 other authors

   Vibrations from experimental setups and the environment are a persistent source of noise for low-temperature calorimeters searching for rare events, including neutrinoless double beta ($0\nu \beta \beta$) decay or dark matter interactions. Such noise can significantly limit experimental sensitivity to the physics case under investigation. Here we report the first detection of marine microseismic vibrations using mK-scale calorimeters. This study employs a multi-device analysis correlating data from CUORE, the leading experiment in the search for $0\nu \beta \beta$ decay with mK-scale calorimeters and the Copernicus Earth Observation program, revealing the seasonal impact of Mediterranean Sea activity on CUORE's energy thresholds, resolution, and sensitivity over four years. The detection of marine microseisms underscores the need to address faint environmental noise in ultra-sensitive experiments. Understanding how such noise couples to the detector and developing mitigation strategies is essential for next-generation experiments. We demonstrate one such strategy: a noise decorrelation algorithm implemented in CUORE using auxiliary sensors, which reduces vibrational noise and improves detector performance. Enhancing sensitivity to $0\nu \beta \beta$ decay and to rare events with low-energy signatures requires identifying unresolved noise sources, advancing noise reduction methods, and improving vibration suppression systems, all of which inform the design of next-generation rare event experiments.

   ↳ physics.ins-detnucl-exCommun.Phys.(2026)·1 citation

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.