New experimental limits on the Pauli-forbidden transitions in C12 nuclei obtained with 485 days Borexino data

G. Bellini, S. Bonetti, M. Buizza Avanzini, B. Caccianiga, D. D'Angelo, D. Franco, M. Giammarchi, P. Lombardi, L. Ludhova, E. Meroni, L. Miramonti, L. Perasso, G. Ranucci, A. Re, Y. Suvorov, Jay Burton Benziger, L. Cadonati, A. Pocar, Frank Calaprice, A. ChavarriaF. Dalnoki-Veress, Cristiano Galbiati, A. Goretti, Andrea Ianni, M. Leung, B. Loer, R. Saldanha, J. Xu, C. Carraro, S. Davini, E. Guardincerri, G. Manuzio, M. Pallavicini, S. Perasso, P. Risso, C. Salvo, G. Testera, S. Zavatarelli, H. De Kerret, D. Kryn, M. Obolensky, D. Vignaud, A. Derbin, V. Muratova, A. Etenko, E. Litvinovich, I. MacHulin, A. Sabelnikov, M. Skorokhvatov, S. Sukhotin, K. Fomenko, O. Smirnov, A. Sotnikov, O. Zaimidoroga, S. Gazzana, C. Ghiano, Aldo Ianni, G. Korga, D. Montanari, A. Razeto, R. Tartaglia, M. Goeger-Neff, T. Lewke, Q. Meindl, L. Oberauer, F. Von Feilitzsch, Y. Winter, M. Wurm, C. Grieb, S. Hardy, M. Joyce, S. Manecki, L. Papp, R. S. Raghavan, D. Rountree, R. B. Vogelaar, W. Maneschg, S. Schönert, H. Simgen, G. Zuzel, M. Misiaszek, M. Wojcik, F. Ortica, A. Romani

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Abstract

The Pauli exclusion principle (PEP) has been tested for nucleons (n,p) in C12 with the Borexino detector. The approach consists of a search for γ, n, p, and β± emitted in a non-Paulian transition of 1P3/2-shell nucleons to the filled 1S1/2 shell in nuclei. Due to the extremely low background and the large mass (278 tons) of the Borexino detector, the following most stringent up-to-date experimental bounds on PEP violating transitions of nucleons have been established: τ(12C→12C~+γ) ≥5.0×1031 yr, τ(12C→11B~+p)≥8.9×1029 yr, τ(12C→11C~+n)≥3.4×1030 yr, τ(12C→12N~+e -+νe~)≥3.1×1030 yr, and τ(12C→12B~+e ++νe)≥2.1×1030 yr, all at 90% C.L. The corresponding upper limits on the relative strengths for the searched non-Paulian electromagnetic, strong and weak transitions have been estimated as δγ2≤2.2×10-57, δN2≤4.1×10 -60, and δβ2≤2.1×10-35.

Original languageEnglish (US)
Article number034317
JournalPhysical Review C - Nuclear Physics
Volume81
Issue number3
DOIs
StatePublished - Mar 29 2010

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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    Bellini, G., Bonetti, S., Buizza Avanzini, M., Caccianiga, B., D'Angelo, D., Franco, D., Giammarchi, M., Lombardi, P., Ludhova, L., Meroni, E., Miramonti, L., Perasso, L., Ranucci, G., Re, A., Suvorov, Y., Benziger, J. B., Cadonati, L., Pocar, A., Calaprice, F., ... Romani, A. (2010). New experimental limits on the Pauli-forbidden transitions in C12 nuclei obtained with 485 days Borexino data. Physical Review C - Nuclear Physics, 81(3), [034317]. https://doi.org/10.1103/PhysRevC.81.034317