Accès ouvert déclaré
2025
preprint
Reconstructing neutrinoless double beta decay event kinematics in a xenon gas detector with vertex tagging
NEXT Collaboration, M. Martínez-Vara, K. Mistry, F. Pompa, B. J. P. Jones, J. Martín-Albo, M. Sorel, C. Adams, H. Almazán, V. Álvarez, B. Aparicio, A. I. Aranburu, L. Arazi, I. J. Arnquist, Fernando Auria‐Luna, S. Ayet, C.D.R. Azevedo, K. Bailey, F. Ballester, M. del Barrio-Torregrosa, A. Bayo, J. M. Benlloch-Rodríguez, F. I. G. M. Borges, A. Brodolin, N. Byrnes, S. Cárcel, A. Castillo, E. Church, L. Cid, C.A.N. Conde, T. Contreras, F. P. Cossío, R. Coupe, E. Dey, G. Díaz, Carlos Echevarria, M. Elorza, J. Escada, R. Felkai, L. M. P. Fernandes, P. Ferrario, A. L. Ferreira, Frank W. Foss, Zoraida Freixa, J. García-Barrena, J.J. Gómez-Cadenas, J. W. R. Grocott, R. Guenette, J. Hauptman, C. A. O. Henriques, J. A. Hernando Morata, P. Herrero-Gómez, V. Herrero, C. Hervés Carrete, Y. Ifergan, F. Kellerer, L. Larizgoitia, A. Larumbe, P. Lebrun, F. López, N. López-March, R. Madigan, R. D. P. Mano, A. P. Marques, G. Martínez-Lema, R. L. Miller, J. Molina-Canteras, F. Monrabal, C. M. B. Monteiro, F. J. Mora, K. E. Navarro, P. Novella, Alex Pilco-Nuñez, D. R. Nygren, E. Oblak, J. Palacio, B. Palmeiro, A. Para, I. Parmaksiz, A. Pazos, J. Pelegrìn, M. Pérez Maneiro, M. Querol, J. Renner, Iván Rivilla, Celia Rogero, L. Rogers, B. Romeo, C. Romo-Luque, V. San Nacienciano, F. P. Santos, J.M.F. dos Santos, M. Seemann, Itay Shomroni, P. A. O. C. Silva, A. Simón, S. R. Soleti, J. Soto-Oton, J. M. R. Teixeira, S. Teruel-Pardo, J. F. Toledo, Claire Tonnelé, S. Torelli, J. Torrent, Alexander Trettin, A. Usón, P. R. G. Valle, J.F.C.A. Veloso, J. Waiton, A. Yubero-Navarro
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Le résumé fourni par la source
If neutrinoless double beta decay is discovered, the next natural step would be understanding the lepton number violating physics responsible for it. Several alternatives exist beyond the exchange of light neutrinos. Some of these mechanisms can be distinguished by measuring phase-space observables, namely the opening angle $\cosθ$ among the two decay electrons, and the electron energy spectra, $T_1$ and $T_2$. In this work, we study the statistical accuracy and precision in measuring these kinematic observables in a future xenon gas detector with the added capability to precisely locate the decay vertex. For realistic detector conditions (a gas pressure of 10 bar and spatial resolution of 4 mm), we find that the average $\overline{\cosθ}$ and $\overline{T_1}$ values can be reconstructed with a precision of 0.19 and 110 keV, respectively, assuming that only 10 neutrinoless double beta decay events are detected.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
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Les sujets associés
Neutrino Physics ResearchDark Matter and Cosmic PhenomenaParticle physics theoretical and experimental studies