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Title: Demonstration of the event identification capabilities of the NEXT-White detector

Abstract

In experiments searching for neutrinoless double-beta decay, the possibility of identifying the two emitted electrons is a powerful tool in rejecting background events and therefore improving the overall sensitivity of the experiment. In this paper we present the first measurement of the efficiency of a cut based on the different event signatures of double and single electron tracks, using the data of the NEXT-White detector, the first detector of the NEXT experiment operating underground. Using a \TO\ calibration source to produce signal-like and background-like events with energies near 1.6 MeV, a signal efficiency of $$71.6 \pm 1.5_{\textrm{ stat}} \pm 0.3_{\textrm{ sys}} \%$$ for a background acceptance of $$20.6 \pm 0.4_{\textrm{ stat}} \pm 0.3_{\textrm{ sys}} \%$$ is found, in good agreement with Monte Carlo simulations. An extrapolation to the energy region of the neutrinoless double beta decay by means of Monte Carlo simulations is also carried out, and the results obtained show an improvement in background rejection over those obtained at lower energies.

Authors:
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Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
The NEXT collaboration
OSTI Identifier:
1546025
Alternate Identifier(s):
OSTI ID: 1604706
Report Number(s):
arXiv:1905.13141; FERMILAB-PUB-19-259-CD-ND
Journal ID: ISSN 1029-8479; oai:inspirehep.net:1737510
Grant/Contract Number:  
AC02-07CH11359; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2019; Journal Issue: 10; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Dark Matter and Double Beta Decay (experiments)

Citation Formats

Ferrario, P., Benlloch-Rodríguez, J. M., Díaz López, G., Hernando Morata, J. A., Kekic, M., Renner, J., Usón, A., Gómez-Cadenas, J. J., Adams, C., Álvarez, V., Arazi, L., Arnquist, I. J., Azevedo, C. D. R., Bailey, K., Ballester, F., Borges, F. I. G. M., Byrnes, N., Cárcel, S., Carrión, J. V., Cebrían, S., Church, E., Conde, C. A. N., Contreras, T., Díaz, J., Diesburg, M., Escada, J., Esteve, R., Felkai, R., Fernandes, A. F. M., Fernandes, L. M. P., Ferreira, A. L., Freitas, E. D. C., Generowicz, J., Ghosh, S., Goldschmidt, A., González-Díaz, D., Guenette, R., Gutíerrez, R. M., Haefner, J., Hafidi, K., Hauptman, J., Henriques, C. A. O., Herrero, P., Herrero, V., Ifergan, Y., Johnston, S., Jones, B. J. P., Labarga, L., Laing, A., Lebrun, P., López-March, N., Losada, M., Mano, R. D. P., Martín-Albo, J., Martínez, A., Martínez-Lema, G., McDonald, A. D., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Muñoz Vidal, J., Novella, P., Nygren, D. R., Palmeiro, B., Para, A., Pérez, J., Psihas, F., Querol, M., Repond, J., Riordan, S., Ripoll, L., Rodríguez García, Y., Rodríguez, J., Rogers, L., Romeo, B., Romo-Luque, C., Santos, F. P., dos Santos, J. M. F., Simón, A., Sofka, C., Sorel, M., Stiegler, T., Toledo, J. F., Torrent, J., Veloso, J. F. C. A., Webb, R., Weiss-Babai, R., White, J. T., Woodruff, K., and Yahlali, N. Demonstration of the event identification capabilities of the NEXT-White detector. United States: N. p., 2019. Web. doi:10.1007/JHEP10(2019)052.
Ferrario, P., Benlloch-Rodríguez, J. M., Díaz López, G., Hernando Morata, J. A., Kekic, M., Renner, J., Usón, A., Gómez-Cadenas, J. J., Adams, C., Álvarez, V., Arazi, L., Arnquist, I. J., Azevedo, C. D. R., Bailey, K., Ballester, F., Borges, F. I. G. M., Byrnes, N., Cárcel, S., Carrión, J. V., Cebrían, S., Church, E., Conde, C. A. N., Contreras, T., Díaz, J., Diesburg, M., Escada, J., Esteve, R., Felkai, R., Fernandes, A. F. M., Fernandes, L. M. P., Ferreira, A. L., Freitas, E. D. C., Generowicz, J., Ghosh, S., Goldschmidt, A., González-Díaz, D., Guenette, R., Gutíerrez, R. M., Haefner, J., Hafidi, K., Hauptman, J., Henriques, C. A. O., Herrero, P., Herrero, V., Ifergan, Y., Johnston, S., Jones, B. J. P., Labarga, L., Laing, A., Lebrun, P., López-March, N., Losada, M., Mano, R. D. P., Martín-Albo, J., Martínez, A., Martínez-Lema, G., McDonald, A. D., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Muñoz Vidal, J., Novella, P., Nygren, D. R., Palmeiro, B., Para, A., Pérez, J., Psihas, F., Querol, M., Repond, J., Riordan, S., Ripoll, L., Rodríguez García, Y., Rodríguez, J., Rogers, L., Romeo, B., Romo-Luque, C., Santos, F. P., dos Santos, J. M. F., Simón, A., Sofka, C., Sorel, M., Stiegler, T., Toledo, J. F., Torrent, J., Veloso, J. F. C. A., Webb, R., Weiss-Babai, R., White, J. T., Woodruff, K., & Yahlali, N. Demonstration of the event identification capabilities of the NEXT-White detector. United States. doi:10.1007/JHEP10(2019)052.
Ferrario, P., Benlloch-Rodríguez, J. M., Díaz López, G., Hernando Morata, J. A., Kekic, M., Renner, J., Usón, A., Gómez-Cadenas, J. J., Adams, C., Álvarez, V., Arazi, L., Arnquist, I. J., Azevedo, C. D. R., Bailey, K., Ballester, F., Borges, F. I. G. M., Byrnes, N., Cárcel, S., Carrión, J. V., Cebrían, S., Church, E., Conde, C. A. N., Contreras, T., Díaz, J., Diesburg, M., Escada, J., Esteve, R., Felkai, R., Fernandes, A. F. M., Fernandes, L. M. P., Ferreira, A. L., Freitas, E. D. C., Generowicz, J., Ghosh, S., Goldschmidt, A., González-Díaz, D., Guenette, R., Gutíerrez, R. M., Haefner, J., Hafidi, K., Hauptman, J., Henriques, C. A. O., Herrero, P., Herrero, V., Ifergan, Y., Johnston, S., Jones, B. J. P., Labarga, L., Laing, A., Lebrun, P., López-March, N., Losada, M., Mano, R. D. P., Martín-Albo, J., Martínez, A., Martínez-Lema, G., McDonald, A. D., Monrabal, F., Monteiro, C. M. B., Mora, F. J., Muñoz Vidal, J., Novella, P., Nygren, D. R., Palmeiro, B., Para, A., Pérez, J., Psihas, F., Querol, M., Repond, J., Riordan, S., Ripoll, L., Rodríguez García, Y., Rodríguez, J., Rogers, L., Romeo, B., Romo-Luque, C., Santos, F. P., dos Santos, J. M. F., Simón, A., Sofka, C., Sorel, M., Stiegler, T., Toledo, J. F., Torrent, J., Veloso, J. F. C. A., Webb, R., Weiss-Babai, R., White, J. T., Woodruff, K., and Yahlali, N. Fri . "Demonstration of the event identification capabilities of the NEXT-White detector". United States. doi:10.1007/JHEP10(2019)052. https://www.osti.gov/servlets/purl/1546025.
@article{osti_1546025,
title = {Demonstration of the event identification capabilities of the NEXT-White detector},
author = {Ferrario, P. and Benlloch-Rodríguez, J. M. and Díaz López, G. and Hernando Morata, J. A. and Kekic, M. and Renner, J. and Usón, A. and Gómez-Cadenas, J. J. and Adams, C. and Álvarez, V. and Arazi, L. and Arnquist, I. J. and Azevedo, C. D. R. and Bailey, K. and Ballester, F. and Borges, F. I. G. M. and Byrnes, N. and Cárcel, S. and Carrión, J. V. and Cebrían, S. and Church, E. and Conde, C. A. N. and Contreras, T. and Díaz, J. and Diesburg, M. and Escada, J. and Esteve, R. and Felkai, R. and Fernandes, A. F. M. and Fernandes, L. M. P. and Ferreira, A. L. and Freitas, E. D. C. and Generowicz, J. and Ghosh, S. and Goldschmidt, A. and González-Díaz, D. and Guenette, R. and Gutíerrez, R. M. and Haefner, J. and Hafidi, K. and Hauptman, J. and Henriques, C. A. O. and Herrero, P. and Herrero, V. and Ifergan, Y. and Johnston, S. and Jones, B. J. P. and Labarga, L. and Laing, A. and Lebrun, P. and López-March, N. and Losada, M. and Mano, R. D. P. and Martín-Albo, J. and Martínez, A. and Martínez-Lema, G. and McDonald, A. D. and Monrabal, F. and Monteiro, C. M. B. and Mora, F. J. and Muñoz Vidal, J. and Novella, P. and Nygren, D. R. and Palmeiro, B. and Para, A. and Pérez, J. and Psihas, F. and Querol, M. and Repond, J. and Riordan, S. and Ripoll, L. and Rodríguez García, Y. and Rodríguez, J. and Rogers, L. and Romeo, B. and Romo-Luque, C. and Santos, F. P. and dos Santos, J. M. F. and Simón, A. and Sofka, C. and Sorel, M. and Stiegler, T. and Toledo, J. F. and Torrent, J. and Veloso, J. F. C. A. and Webb, R. and Weiss-Babai, R. and White, J. T. and Woodruff, K. and Yahlali, N.},
abstractNote = {In experiments searching for neutrinoless double-beta decay, the possibility of identifying the two emitted electrons is a powerful tool in rejecting background events and therefore improving the overall sensitivity of the experiment. In this paper we present the first measurement of the efficiency of a cut based on the different event signatures of double and single electron tracks, using the data of the NEXT-White detector, the first detector of the NEXT experiment operating underground. Using a \TO\ calibration source to produce signal-like and background-like events with energies near 1.6 MeV, a signal efficiency of $71.6 \pm 1.5_{\textrm{ stat}} \pm 0.3_{\textrm{ sys}} \%$ for a background acceptance of $20.6 \pm 0.4_{\textrm{ stat}} \pm 0.3_{\textrm{ sys}} \%$ is found, in good agreement with Monte Carlo simulations. An extrapolation to the energy region of the neutrinoless double beta decay by means of Monte Carlo simulations is also carried out, and the results obtained show an improvement in background rejection over those obtained at lower energies.},
doi = {10.1007/JHEP10(2019)052},
journal = {Journal of High Energy Physics (Online)},
number = 10,
volume = 2019,
place = {United States},
year = {2019},
month = {10}
}

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Geant4—a simulation toolkit
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