中文

在DAΦNE上利用SIDDHARTA-2进行的首次Kaonic硼同位素测量

核实验 2026-05-27 v1

摘要

本文报告了由SIDDHARTA-2合作组在DAΦ\PhiNE对撞机上进行的Kaonic硼X射线跃迁的精确测量。确定了两种硼同位素,kaonic 10B^{10}\text{B}和kaonic 11B^{11}\text{B}5g4f5g\rightarrow4f4f3d4f\rightarrow3d跃迁的能量和产额。对于5g4f5g\rightarrow4f跃迁,kaonic 11B^{11}\text{B}的测量能量为7064.62±16.93(stat.)±2.00(sys.)7064.62 \pm 16.93\,\text{(stat.)} \pm 2.00\,\text{(sys.)}~eV,kaonic 10B^{10}\text{B}6920.96±58.23(stat.)±2.00(sys.)6920.96 \pm 58.23\,\text{(stat.)} \pm 2.00\,\text{(sys.)}~eV。对于4f3d4f\rightarrow3d跃迁,相应的值分别为15293.33±4.80(stat.)±5.30(sys.)15293.33 \pm 4.80\,\text{(stat.)} \pm 5.30\,\text{(sys.)}~eV和15180.11±20.86(stat.)±5.30(sys.)15180.11 \pm 20.86\,\text{(stat.)} \pm 5.30\,\text{(sys.)}~eV。5g4f5g\rightarrow4f跃迁的产额,kaonic 11B^{11}\text{B}0.076±0.013(stat.)0.012+0.011(sys.)0.076 \pm 0.013\,\text{(stat.)}^{+0.011}_{-0.012}\,\text{(sys.)},kaonic 10B^{10}\text{B}0.0189±0.0032(stat.)0.0030+0.0028(sys.)0.0189 \pm 0.0032\,\text{(stat.)}^{+0.0028}_{-0.0030}\,\text{(sys.)}。对于4f3d4f\rightarrow3d跃迁,相应的产额分别为0.115±0.006(stat.)0.005+0.002(sys.)0.115 \pm 0.006\,\text{(stat.)}^{+0.002}_{-0.005}\,\text{(sys.)}0.0286±0.0015(stat.)0.0014+0.0007(sys.)0.0286 \pm 0.0015\,\text{(stat.)}^{+0.0007}_{-0.0014}\,\text{(sys.)}。在kaonic 11B^{11}\text{B}4f3d4f\rightarrow3d X射线跃迁测量中,未观察到与纯电磁(QED)计算有统计显著性的偏差。将这些结果解释为上限,它们对轻核中3d能级的强相互作用能量移动和宽度施加了严格的约束。将这些限制转化为对唯象的Kaon-核光学势的界限,并在特定理论模型内转化为对复散射振幅的界限,我们约束并排除了预测硼中存在大移动或宽度的情景。

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引用

@article{arxiv.2605.26979,
  title  = {First Kaonic Boron Isotopes Measurements with SIDDHARTA-2 at DA$\Phi$NE},
  author = {D Sirghi and M Iliescu and F Sgaramella and L Abbene and C Amsler and F Artibani and M Bazzi and G Borghi and D Bosnar and M Bragadireanu and A Buttacavoli and M Carminati and A Clozza and F Clozza and L De Paolis and R Del Grande and K Dulski and C Fiorini and I Friščić and C Guaraldo and P Indelicato and M Iwasaki and A Khreptak and S Manti and J Marton and P Moskal and H Ohnishi and K Piscicchia and F Principato and A Scordo and M Silarski and F Sirghi and M Skurzok and A Spallone and K Toho and O Vazquez Doce and J Zmeskal and C Curceanu},
  journal= {arXiv preprint arXiv:2605.26979},
  year   = {2026}
}