Nuclear Theory·nucl-th

Monday·August 11, 2025

9 papers—5 primary·4 cross-listed

06
Factorization and resummation of QED radiative corrections for neutron beta decay
Zehua Cao🇺🇸 · Richard J. Hill🇺🇸 · Ryan Plestid🇺🇸 · Peter Vander Griend🇺🇸
Details of the two-loop analysis of long-distance QED radiative corrections to neutron beta decay are presented. Explicit expressions are given for hard, jet, and soft functions appearing in the factorization formula that describes the small mass/large energy limit. Power corrections, cancellation of singularities in the small mass expansion, renormalization scheme dependence, and bound state effects are discussed. The results impact the determination of $∣ V_{u d} ∣$ from the measured neutron lifetime.
↳ hep-phhep-exnucl-thPRD(2025)·9 citations
07
Space-time Areas and Hadronization Studies
S. Abachi🇺🇸 · C. Buchanan🇺🇸
Space-time area laws play a fundamental role in modeling strongly interacting phenomena, such as in relativistic string models, QCD on the lattice, and in hadronization modeling. For the latter, an exact expression for relevant space-time areas related to the final state hadronic events for hadrons of any mass is calculated. Usage of this expression in the UCLA hadronization model helps validate its space-time area law (STAL) principle and unifies the treatment of heavy and light hadrons via a single fragmentation function.
↳ hep-phhep-exnucl-exnucl-th0 citations
08
Correlation functions for $n D ˉ_{s 1} (2460)$ and $n D ˉ_{s 1} (2536)$
Breno Agatão🇧🇷 · Pedro Brandão🇧🇷 · A. Martinez Torres🇧🇷 · K. P. Khemchandani🇧🇷 · Luciano M. Abreu🇧🇷 · E. Oset🇪🇸
We study the interaction of the $n D ˉ_{s 1} (2460)$ and $n D ˉ_{s 1} (2536)$ systems from the perspective that the $D_{s 1} (2460)$ and $D_{s 1} (2536)$ states are molecular states of $K D^{*}$ and $K^{*} D$ , respectively. We use an improved version of the fixed center approximation to the Faddeev equations which fulfills exact elastic unitarity at the threshold of the systems. We predict the existence of resonant states below threshold and also determine the scattering length, effective range and correlation functions of these systems, showing that the results contain important information to test the assumed molecular nature of the two $D_{s 1}$ states.
↳ hep-phnucl-thEPJC(2025)·13 citations
09
Detecting Traces of Light-Quark Yukawa Couplings to the Higgs Boson in Fragmentation Products
Johannes K. L. Michel🇳🇱
We point out that Yukawa interactions of light quarks with the Higgs boson are imprinted as unique azimuthal modulations in the density of fragmentation hadrons relative to the Higgs $p_{T}$ . We introduce Yukawa Fragmentation Asymmetries (YFAs), interference observables that are linearly proportional to real (Standard Model) or CP-odd Yukawa couplings, respectively. The chiral suppression is lifted nonperturbatively by chiral-odd multi-hadron fragmentation functions. As a simple example process, we consider $V H$ production with a tagged target fragmentation hadron at the HL-LHC. We find promising projected sensitivities to first and second-generation couplings while maintaining superior control over theory systematics, flavor separation, and model independence compared to present methods. Our results point to deep synergies between precision studies of confinement and the in-depth exploration of the Higgs sector.
↳ hep-phhep-exnucl-exnucl-th3 citations

Affiliations

first authorsco-authorsvia INSPIRE

Factorization and resummation of QED radiative corrections for neutron beta decay

Space-time Areas and Hadronization Studies

Correlation functions for nDˉs1​(2460) and nDˉs1​(2536)

Detecting Traces of Light-Quark Yukawa Couplings to the Higgs Boson in Fragmentation Products

Affiliations

Correlation functions for $n D ˉ_{s 1} (2460)$ and $n D ˉ_{s 1} (2536)$