Opportunities and challenges to study solar neutrinos with a Q-Pix pixel readout

Fuente: arXiv

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Autori principali:	García-Peris, M. Á., Ruiz, G., Kubota, S., Navrer-Agasson, A., Stenico, G. V., Gramellini, E., Guenette, R., Asaadi, J., Battat, J. B. R., Chirayath, V. A., Church, E., Djurcic, Z., Ezeribe, A. C., Gainer, J. N., Gansle, G., Keefe, K., Lane, N., Mauger, C., Mei, Y., Newcomer, F. M., Nygren, D. R., Rooks, M., Sau, P., Seidel, O., Söldner-Rembold, S., Tzoka, I., Van Berg, R.
Natura:	Preprint
Pubblicazione:	2025
Soggetti:	High Energy Physics - Experiment Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics High Energy Physics - Phenomenology Instrumentation and Detectors
Accesso online:	Acceder al recurso
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_version_	1866912494509883392
author	García-Peris, M. Á. Ruiz, G. Kubota, S. Navrer-Agasson, A. Stenico, G. V. Gramellini, E. Guenette, R. Asaadi, J. Battat, J. B. R. Chirayath, V. A. Church, E. Djurcic, Z. Ezeribe, A. C. Gainer, J. N. Gansle, G. Keefe, K. Lane, N. Mauger, C. Mei, Y. Newcomer, F. M. Nygren, D. R. Rooks, M. Sau, P. Seidel, O. Söldner-Rembold, S. Tzoka, I. Van Berg, R.
author_facet	García-Peris, M. Á. Ruiz, G. Kubota, S. Navrer-Agasson, A. Stenico, G. V. Gramellini, E. Guenette, R. Asaadi, J. Battat, J. B. R. Chirayath, V. A. Church, E. Djurcic, Z. Ezeribe, A. C. Gainer, J. N. Gansle, G. Keefe, K. Lane, N. Mauger, C. Mei, Y. Newcomer, F. M. Nygren, D. R. Rooks, M. Sau, P. Seidel, O. Söldner-Rembold, S. Tzoka, I. Van Berg, R.
contents	The study of solar neutrinos presents significant opportunities in astrophysics, nuclear physics, and particle physics. However, the low-energy nature of these neutrinos introduces considerable challenges to isolate them from background events, requiring detectors with low-energy threshold, high spatial and energy resolutions, and low data rate. We present the study of solar neutrinos with a kiloton-scale liquid argon detector located underground, instrumented with a pixel readout using the Q-Pix technology. We explore the potential of using volume fiducialization, directional topological information, light signal coincidence and pulse-shape discrimination to enhance solar neutrino sensitivity. We find that discriminating neutrino signals below 5 MeV is very difficult. However, we show that these methods are useful for the detection of solar neutrinos when external backgrounds are sufficiently understood and when the detector is built using low-background techniques. When building a workable background model for this study, we identify γ background from the cavern walls and from capture of α particles in radon decay chains as both critical to solar neutrino sensitivity and significantly underconstrained by existing measurements. Finally, we highlight that the main advantage of the use of Q-Pix for solar neutrino studies lies in its ability to enable the continuous readout of all low-energy events with minimal data rates and manageable storage for further offline analyses.
format	Preprint
id	arxiv_https___arxiv_org_abs_2507_15459
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Opportunities and challenges to study solar neutrinos with a Q-Pix pixel readout García-Peris, M. Á. Ruiz, G. Kubota, S. Navrer-Agasson, A. Stenico, G. V. Gramellini, E. Guenette, R. Asaadi, J. Battat, J. B. R. Chirayath, V. A. Church, E. Djurcic, Z. Ezeribe, A. C. Gainer, J. N. Gansle, G. Keefe, K. Lane, N. Mauger, C. Mei, Y. Newcomer, F. M. Nygren, D. R. Rooks, M. Sau, P. Seidel, O. Söldner-Rembold, S. Tzoka, I. Van Berg, R. High Energy Physics - Experiment Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics High Energy Physics - Phenomenology Instrumentation and Detectors The study of solar neutrinos presents significant opportunities in astrophysics, nuclear physics, and particle physics. However, the low-energy nature of these neutrinos introduces considerable challenges to isolate them from background events, requiring detectors with low-energy threshold, high spatial and energy resolutions, and low data rate. We present the study of solar neutrinos with a kiloton-scale liquid argon detector located underground, instrumented with a pixel readout using the Q-Pix technology. We explore the potential of using volume fiducialization, directional topological information, light signal coincidence and pulse-shape discrimination to enhance solar neutrino sensitivity. We find that discriminating neutrino signals below 5 MeV is very difficult. However, we show that these methods are useful for the detection of solar neutrinos when external backgrounds are sufficiently understood and when the detector is built using low-background techniques. When building a workable background model for this study, we identify γ background from the cavern walls and from capture of α particles in radon decay chains as both critical to solar neutrino sensitivity and significantly underconstrained by existing measurements. Finally, we highlight that the main advantage of the use of Q-Pix for solar neutrino studies lies in its ability to enable the continuous readout of all low-energy events with minimal data rates and manageable storage for further offline analyses.
title	Opportunities and challenges to study solar neutrinos with a Q-Pix pixel readout
topic	High Energy Physics - Experiment Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics High Energy Physics - Phenomenology Instrumentation and Detectors
url	https://arxiv.org/abs/2507.15459