Evolution of Spectroscopic Factors in Neutron-deficient p-shell Nuclei in connection with Short-Range Correlations

@misc{koyama2026evolution,
  title = {{Evolution of Spectroscopic Factors in Neutron-deficient $p$-shell Nuclei in connection with Short-Range Correlations}},
  author = {S Koyama and D Suzuki and O Sorlin and C Hebborn and M Assié and L Lalanne and T Abe and D Beaumel and Y Blumenfeld and L Caceres and F de Oliveira Santos and F Delaunay and F Flavigny and S Franchoo and J Gibelin and V Girard-Alcindor and J Guillot and F Hammache and O Kamalou and A Kamenyero and N Kitamura and V Lapoux and A Lemasson and A Matta and B Mauss and P Morfouace and M Niikura and H Otsu and J Pancin and T Roger and T.Y Saito and H Sakurai and C Stodel and J-C Thomas},
  howpublished = {HAL},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.07218},
  eprint = {2609.07218},
  archivePrefix = {arXiv},
  url = {https://hal.science/hal-05761261v1},
}

TY  - UNPB
TI  - Evolution of Spectroscopic Factors in Neutron-deficient p-shell Nuclei in connection with Short-Range Correlations
AU  - S Koyama
AU  - D Suzuki
AU  - O Sorlin
AU  - C Hebborn
AU  - M Assié
AU  - L Lalanne
AU  - T Abe
AU  - D Beaumel
AU  - Y Blumenfeld
AU  - L Caceres
AU  - F de Oliveira Santos
AU  - F Delaunay
AU  - F Flavigny
AU  - S Franchoo
AU  - J Gibelin
AU  - V Girard-Alcindor
AU  - J Guillot
AU  - F Hammache
AU  - O Kamalou
AU  - A Kamenyero
AU  - N Kitamura
AU  - V Lapoux
AU  - A Lemasson
AU  - A Matta
AU  - B Mauss
AU  - P Morfouace
AU  - M Niikura
AU  - H Otsu
AU  - J Pancin
AU  - T Roger
AU  - T.Y Saito
AU  - H Sakurai
AU  - C Stodel
AU  - J-C Thomas
PY  - 2026
DA  - 2026/09/07
PB  - HAL
DO  - 10.48550/arxiv.2609.07218
UR  - https://hal.science/hal-05761261v1
AB  - We report an uncertainty-controlled determination of neutron-removal spectroscopic factors in the neutron-deficient p-shell nuclei ^12C, ^10C, ^9C, and ^8B, all measured under uniform conditions through exclusive ground-state-to-ground-state (p,d) reactions at about 50 MeV/nucleon in a liquid hydrogen target at the GANIL/LISE facility. The deuterons were detected in the highly-segmented MUST2 detector placed at forward angles and the excitation energy was reconstructed by the missing mass method. Several transitions, including a new state in ^7B, were observed. Differential cross sections, which display an L=1 pattern for all nuclei, were fitted with 416 sets of uncertainty-quantified optical-model potential parameters and considering various single-particle bound-state wavefunctions to derive C^2S values. The ratio between experimental and shell-model calculated values, R_S, is found to be slightly decreasing as a function of increasing proton to neutron separation energy asymmetry ΔS, with a slope of −0.0049(36)_stat(13)_omp(8)_s.p.. The observed trend is compatible with the phenomenological expectation that the short-range correlation effect on C^2S increases with the degree of nucleon minority. The present data set delivers a high-precision benchmark that will tightly constrain future microscopic descriptions of short-range correlations in asymmetric nuclei.
ER  -