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First Evidence of Solar Neutrino Interactions on $^{13}$C

Fuente: arXiv

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Main Authors:	Collaboration, SNO+, :, Abreu, M., Allega, A., Anderson, M. R., Andringa, S., Asner, D. M., Auty, D. J., Bacon, A., Baltazar, T., Barão, F., Barros, N., Bayes, R., Beier, E. W., Bialek, A., Biller, S. D., Caden, E., Chen, M., Cheng, S., Cleveland, B., Cookman, D., Corning, J., DeGraw, S., Dehghani, R., Deloye, J., Depatie, M. M., Di Lodovico, F., Dima, C., Dittmer, J., Dixon, K. H., Esmaeilian, M. S., Falk, E., Fatemighomi, N., Ford, R., Gaur, A., González-Reina, O. I., Gooding, D., Grant, C., Grove, J., Hall, S., Hallin, A. L., Hallman, D., Hebert, M. R., Heintzelman, W. J., Helmer, R. L., Hewitt, C., Hreljac, B., Huang, P., Hunt-Stokes, R., Inácio, A. S., Jillings, C. J., Kaluzienski, S., Kaptanoglu, T., Kladnik, J., Klein, J. R., Kormos, L. L., Krar, B., Kraus, C., Krauss, C. B., Kroupová, T., Lake, C., Lebanowski, L., Lefebvre, C., Lozza, V., Luo, M., Maguire, S., Maio, A., Manecki, S., Maneira, J., Martin, R. D., McCauley, N., McDonald, A. B., Milton, G., Morris, D., Mubasher, M., Naugle, S., Nolan, L. J., O'Keeffe, H. M., Gann, G. D. Orebi, Ouyang, S., Page, J., Pal, S., Paleshi, K., Parker, W., Pickard, L. J., Quenallata, B., Ravi, P., Reichold, A., Riccetto, S., Rose, J., Rosero, R., Shen, J., Simms, J., Skensved, P., Smiley, M., Tafirout, R., Tam, B., Tseng, J., Vázquez-Jáuregui, E., Veinot, J. G. C., Virtue, C. J., Wang, F., Ward, M., Weigand, J. J., Wilson, J. D., Wilson, J. R., Wright, A., Yang, S., Ye, Z., Yeh, M., Yu, S., Zhang, Y., Zuber, K., Zummo, A.
Format:	Preprint
Published:	2025
Subjects:	Nuclear Experiment High Energy Physics - Experiment
Online Access:	Acceder al recurso
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author	Collaboration, SNO+ : Abreu, M. Allega, A. Anderson, M. R. Andringa, S. Asner, D. M. Auty, D. J. Bacon, A. Baltazar, T. Barão, F. Barros, N. Bayes, R. Beier, E. W. Bialek, A. Biller, S. D. Caden, E. Chen, M. Cheng, S. Cleveland, B. Cookman, D. Corning, J. DeGraw, S. Dehghani, R. Deloye, J. Depatie, M. M. Di Lodovico, F. Dima, C. Dittmer, J. Dixon, K. H. Esmaeilian, M. S. Falk, E. Fatemighomi, N. Ford, R. Gaur, A. González-Reina, O. I. Gooding, D. Grant, C. Grove, J. Hall, S. Hallin, A. L. Hallman, D. Hebert, M. R. Heintzelman, W. J. Helmer, R. L. Hewitt, C. Hreljac, B. Huang, P. Hunt-Stokes, R. Inácio, A. S. Jillings, C. J. Kaluzienski, S. Kaptanoglu, T. Kladnik, J. Klein, J. R. Kormos, L. L. Krar, B. Kraus, C. Krauss, C. B. Kroupová, T. Lake, C. Lebanowski, L. Lefebvre, C. Lozza, V. Luo, M. Maguire, S. Maio, A. Manecki, S. Maneira, J. Martin, R. D. McCauley, N. McDonald, A. B. Milton, G. Morris, D. Mubasher, M. Naugle, S. Nolan, L. J. O'Keeffe, H. M. Gann, G. D. Orebi Ouyang, S. Page, J. Pal, S. Paleshi, K. Parker, W. Pickard, L. J. Quenallata, B. Ravi, P. Reichold, A. Riccetto, S. Rose, J. Rosero, R. Shen, J. Simms, J. Skensved, P. Smiley, M. Tafirout, R. Tam, B. Tseng, J. Vázquez-Jáuregui, E. Veinot, J. G. C. Virtue, C. J. Wang, F. Ward, M. Weigand, J. J. Wilson, J. D. Wilson, J. R. Wright, A. Yang, S. Ye, Z. Yeh, M. Yu, S. Zhang, Y. Zuber, K. Zummo, A.
author_facet	Collaboration, SNO+ : Abreu, M. Allega, A. Anderson, M. R. Andringa, S. Asner, D. M. Auty, D. J. Bacon, A. Baltazar, T. Barão, F. Barros, N. Bayes, R. Beier, E. W. Bialek, A. Biller, S. D. Caden, E. Chen, M. Cheng, S. Cleveland, B. Cookman, D. Corning, J. DeGraw, S. Dehghani, R. Deloye, J. Depatie, M. M. Di Lodovico, F. Dima, C. Dittmer, J. Dixon, K. H. Esmaeilian, M. S. Falk, E. Fatemighomi, N. Ford, R. Gaur, A. González-Reina, O. I. Gooding, D. Grant, C. Grove, J. Hall, S. Hallin, A. L. Hallman, D. Hebert, M. R. Heintzelman, W. J. Helmer, R. L. Hewitt, C. Hreljac, B. Huang, P. Hunt-Stokes, R. Inácio, A. S. Jillings, C. J. Kaluzienski, S. Kaptanoglu, T. Kladnik, J. Klein, J. R. Kormos, L. L. Krar, B. Kraus, C. Krauss, C. B. Kroupová, T. Lake, C. Lebanowski, L. Lefebvre, C. Lozza, V. Luo, M. Maguire, S. Maio, A. Manecki, S. Maneira, J. Martin, R. D. McCauley, N. McDonald, A. B. Milton, G. Morris, D. Mubasher, M. Naugle, S. Nolan, L. J. O'Keeffe, H. M. Gann, G. D. Orebi Ouyang, S. Page, J. Pal, S. Paleshi, K. Parker, W. Pickard, L. J. Quenallata, B. Ravi, P. Reichold, A. Riccetto, S. Rose, J. Rosero, R. Shen, J. Simms, J. Skensved, P. Smiley, M. Tafirout, R. Tam, B. Tseng, J. Vázquez-Jáuregui, E. Veinot, J. G. C. Virtue, C. J. Wang, F. Ward, M. Weigand, J. J. Wilson, J. D. Wilson, J. R. Wright, A. Yang, S. Ye, Z. Yeh, M. Yu, S. Zhang, Y. Zuber, K. Zummo, A.
contents	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$σ$. 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$^{+3.0}_{-2.3}$ observed 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.
format	Preprint
id	arxiv_https___arxiv_org_abs_2508_20844
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	First Evidence of Solar Neutrino Interactions on $^{13}$C Collaboration, SNO+ : Abreu, M. Allega, A. Anderson, M. R. Andringa, S. Asner, D. M. Auty, D. J. Bacon, A. Baltazar, T. Barão, F. Barros, N. Bayes, R. Beier, E. W. Bialek, A. Biller, S. D. Caden, E. Chen, M. Cheng, S. Cleveland, B. Cookman, D. Corning, J. DeGraw, S. Dehghani, R. Deloye, J. Depatie, M. M. Di Lodovico, F. Dima, C. Dittmer, J. Dixon, K. H. Esmaeilian, M. S. Falk, E. Fatemighomi, N. Ford, R. Gaur, A. González-Reina, O. I. Gooding, D. Grant, C. Grove, J. Hall, S. Hallin, A. L. Hallman, D. Hebert, M. R. Heintzelman, W. J. Helmer, R. L. Hewitt, C. Hreljac, B. Huang, P. Hunt-Stokes, R. Inácio, A. S. Jillings, C. J. Kaluzienski, S. Kaptanoglu, T. Kladnik, J. Klein, J. R. Kormos, L. L. Krar, B. Kraus, C. Krauss, C. B. Kroupová, T. Lake, C. Lebanowski, L. Lefebvre, C. Lozza, V. Luo, M. Maguire, S. Maio, A. Manecki, S. Maneira, J. Martin, R. D. McCauley, N. McDonald, A. B. Milton, G. Morris, D. Mubasher, M. Naugle, S. Nolan, L. J. O'Keeffe, H. M. Gann, G. D. Orebi Ouyang, S. Page, J. Pal, S. Paleshi, K. Parker, W. Pickard, L. J. Quenallata, B. Ravi, P. Reichold, A. Riccetto, S. Rose, J. Rosero, R. Shen, J. Simms, J. Skensved, P. Smiley, M. Tafirout, R. Tam, B. Tseng, J. Vázquez-Jáuregui, E. Veinot, J. G. C. Virtue, C. J. Wang, F. Ward, M. Weigand, J. J. Wilson, J. D. Wilson, J. R. Wright, A. Yang, S. Ye, Z. Yeh, M. Yu, S. Zhang, Y. Zuber, K. Zummo, A. Nuclear Experiment High Energy Physics - Experiment 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$σ$. 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$^{+3.0}_{-2.3}$ observed 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.
title	First Evidence of Solar Neutrino Interactions on $^{13}$C
topic	Nuclear Experiment High Energy Physics - Experiment
url	https://arxiv.org/abs/2508.20844