Wed·Aug 28, 2024Wednesday·August 28, 2024

1. 01*

   Ionization potential of radium monofluoride

   S. G. Wilkins🇺🇸 · H. A. Perrett🇬🇧 · S. M. Udrescu🇺🇸 · A. A. Kyuberis🇳🇱 · L. F. Pašteka🇳🇱 · M. Au🇨🇭 · I. Belošević🇨🇦 · R. Berger🇩🇪 · C. L. Binnersley🇬🇧 · M. L. Bissell🇬🇧 · A. Borschevsky🇳🇱 · A. A. Breier🇩🇪 and 34 other authors

   The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. The results are in agreement with a relativistic coupled-cluster prediction of 4.969[7] eV, incorporating up to quantum electrodynamics corrections. Using the same computational methodology, an improved calculation for the dissociation energy ($D_0$) of 5.54[5] eV is presented. This confirms that radium monofluoride joins the small group of diatomic molecules for which $D_0>\mathrm{IP}$, paving the way for precision control and interrogation of its Rydberg states.

   ↳ physics.atom-phnucl-exphysics.chem-phphysics.comp-phPRResearch(2026)·9 citations
2. 02*

   Long Range Energy-energy Correlator at the LHC

   Yuxun Guo🇺🇸 · Xiaohui Liu🇨🇳 · Feng Yuan🇺🇸

   We study the forward-backward azimuthal angular correlations of hadrons in association with multi-particle production in the central rapidity region in proton-proton collisions at the LHC. We apply the nucleon energy-energy correlator framework, where the spinning gluon distribution introduces a nontrivial $\cos (2\varphi )$ asymmetries. We will demonstrate that the fundamental helicity structure of QCD amplitudes predicts a unique power counting rule: $\cos (2\varphi )$ asymmetry starts at $O({\alpha }_s^2)$ order for dijet, $O({\alpha }_s)$ for three jet and $O(1)$ for four (and more) jet productions. Our results will help us to understand the long standing puzzle of nearside ridge behavior observed in high multiplicity events of $pp$ collisions at the LHC.

   ↳ hep-phhep-exnucl-exnucl-thPRD(2025)·11 citations
3. 03*

   Sources of longitudinal flow decorrelations in high-energy nuclear collisions

   Jiangyong Jia🇺🇸 · Shengli Huang🇺🇸 · Chunjian Zhang🇨🇳 · Somadutta Bhatta🇺🇸

   The longitudinal structure of the quark-gluon plasma (QGP) consists of several components spanning various scales. However, its short-range features are often obscured by final-state non-flow correlations. Here, we introduce a data-driven approach to separate initial state structures from non-flow effects. The longitudinal structure is found having two distinct components: one that reflects the global twisted geometry of the QGP, and another that captures localized fluctuations in rapidity. The characteristics of this second component, contributing to short- and medium-range flow decorrelations, can be quantified by comparing collisions of nuclei with different shapes. This study represents the first successful attempt to disentangle long- and short-range flow decorrelations from non-flow backgrounds, providing new insights into the initial conditions of heavy-ion collisions.

   ↳ nucl-thhep-phnucl-ex13 citations

* 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.