First Observation of Solar Neutrino Interactions on $^{13}$C
First Observation of Solar Neutrino Interactions on $^{13}$C
The SNO+ Collaboration reports the first evidence of $^{8}\text{B}$ solar neutrinos interacting on $^{13}\text{C}$ nuclei. The charged current interaction proceeds through $^{13}\text{C} + ν_e \rightarrow {}^{13}\text{N} + e^-$ which is followed, with a 10 minute half-life, by ${}^{13}\text{N} \rightarrow {}^{13}\text{C} + e^+ +ν_e .$ The detection strategy is based on the delayed coincidence between the electron and the positron. Evidence for the charged current signal is presented with a significance of 4.2$Ï$. Using the natural abundance of $^{13}\text{C}$ present in the scintillator, 5.7 tonnes of $^{13}\text{C}$ over 231 days of data were used in this analysis. The 5.6$^{+3.0}_{-2.3}$ detected events in the data set are consistent with the expectation of 4.7$^{+0.6}_{-1.3}$ events. This result is the second real-time measurement of CC interactions of $^{8}\text{B}$ neutrinos with nuclei and constitutes the lowest energy observation of neutrino interactions on $^{13}\text{C}$ generally. This enables the first direct measurement of the CC $ν_e$ reaction to the ground state of ${}^{13}\text{N}$, yielding an average cross section of $(16.1 ^{+8.5}_{-6.7} (\text{stat.}) ^{+1.6}_{-2.7} (\text{syst.}) )\times 10^{-43}$ cm$^{2}$ over the relevant $^{8}\text{B}$ solar neutrino energies.
SNO+ Collaboration、:、M. Abreu、A. Allega、M. R. Anderson、S. Andringa、D. M. Asner、D. J. Auty、A. Bacon、T. Baltazar、F. Barão、N. Barros、R. Bayes、E. W. Beier、A. Bialek、S. D. Biller、E. Caden、M. Chen、S. Cheng、B. Cleveland、D. Cookman、J. Corning、S. DeGraw、R. Dehghani、J. Deloye、M. M. Depatie、F. Di Lodovico、C. Dima、J. Dittmer、K. H. Dixon、M. S. Esmaeilian、E. Falk、N. Fatemighomi、R. Ford、A. Gaur、O. I. González-Reina、D. Gooding、C. Grant、J. Grove、S. Hall、A. L. Hallin、D. Hallman、M. R. Hebert、W. J. Heintzelman、R. L. Helmer、C. Hewitt、B. Hreljac、P. Huang、R. Hunt-Stokes、A. S. Inácio、C. J. Jillings、S. Kaluzienski、T. Kaptanoglu、J. Kladnik、J. R. Klein、L. L. Kormos、B. Krar、C. Kraus、C. B. Krauss、T. Kroupová、C. Lake、L. Lebanowski、C. Lefebvre、V. Lozza、M. Luo、S. Maguire、A. Maio、S. Manecki、J. Maneira、R. D. Martin、N. McCauley、A. B. McDonald、G. Milton、D. Morris、M. Mubasher、S. Naugle、L. J. Nolan、H. M. O'Keeffe、G. D. Orebi Gann、S. Ouyang、J. Page、S. Pal、K. Paleshi、W. Parker、L. J. Pickard、B. Quenallata、P. Ravi、A. Reichold、S. Riccetto、J. Rose、R. Rosero、J. Shen、J. Simms、P. Skensved、M. Smiley、R. Tafirout、B. Tam、J. Tseng、E. Vázquez-Jáuregui、J. G. C. Veinot、C. J. Virtue、F. Wang、M. Ward、J. J. Weigand、J. D. Wilson、J. R. Wilson、A. Wright、S. Yang、Z. Ye、M. Yeh、S. Yu、Y. Zhang、K. Zuber、A. Zummo
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SNO+ Collaboration,:,M. Abreu,A. Allega,M. R. Anderson,S. Andringa,D. M. Asner,D. J. Auty,A. Bacon,T. Baltazar,F. Barão,N. Barros,R. Bayes,E. W. Beier,A. Bialek,S. D. Biller,E. Caden,M. Chen,S. Cheng,B. Cleveland,D. Cookman,J. Corning,S. DeGraw,R. Dehghani,J. Deloye,M. M. Depatie,F. Di Lodovico,C. Dima,J. Dittmer,K. H. Dixon,M. S. Esmaeilian,E. Falk,N. Fatemighomi,R. Ford,A. Gaur,O. I. González-Reina,D. Gooding,C. Grant,J. Grove,S. Hall,A. L. Hallin,D. Hallman,M. R. Hebert,W. J. Heintzelman,R. L. Helmer,C. Hewitt,B. Hreljac,P. Huang,R. Hunt-Stokes,A. S. Inácio,C. J. Jillings,S. Kaluzienski,T. Kaptanoglu,J. Kladnik,J. R. Klein,L. L. Kormos,B. Krar,C. Kraus,C. B. Krauss,T. Kroupová,C. Lake,L. Lebanowski,C. Lefebvre,V. Lozza,M. Luo,S. Maguire,A. Maio,S. Manecki,J. Maneira,R. D. Martin,N. McCauley,A. B. McDonald,G. Milton,D. Morris,M. Mubasher,S. Naugle,L. J. Nolan,H. M. O'Keeffe,G. D. Orebi Gann,S. Ouyang,J. Page,S. Pal,K. Paleshi,W. Parker,L. J. Pickard,B. Quenallata,P. Ravi,A. Reichold,S. Riccetto,J. Rose,R. Rosero,J. Shen,J. Simms,P. Skensved,M. Smiley,R. Tafirout,B. Tam,J. Tseng,E. Vázquez-Jáuregui,J. G. C. Veinot,C. J. Virtue,F. Wang,M. Ward,J. J. Weigand,J. D. Wilson,J. R. Wilson,A. Wright,S. Yang,Z. Ye,M. Yeh,S. Yu,Y. Zhang,K. Zuber,A. Zummo.First Observation of Solar Neutrino Interactions on $^{13}$C[EB/OL].(2025-08-28)[2025-09-06].https://arxiv.org/abs/2508.20844.点此复制
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