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New limits on nucleon decays into invisible channels with the BOREXINO counting test facility

  • H. O. Back
  • , M. Balata
  • , A. de Bari
  • , T. Beau
  • , A. de Bellefon
  • , G. Bellini
  • , J. Benziger
  • , S. Bonetti
  • , C. Buck
  • , B. Caccianiga
  • , L. Cadonati
  • , F. Calaprice
  • , G. Cecchet
  • , M. Chen
  • , A. di Credico
  • , O. Dadoun
  • , D. D'Angelo
  • , V. Y. Denisov
  • , A. Derbin
  • , M. Deutsch
  • F. Elisei, A. Etenko, F. von Feilitzsch, R. Fernholz, R. Ford, D. Franco, B. Freudiger, C. Galbiati, F. Gatti, S. Gazzana, M. G. Giammarchi, D. Giugni, M. Goeger-Neff, A. Goretti, C. Grieb, C. Hagner, G. Heusser, A. Ianni, A. M. Ianni, H. de Kerret, J. Kiko, T. Kirsten, V. Kobychev, G. Korga, G. Korschinek, Y. Kozlov, D. Kryn, M. Laubenstein, E. Litvinovich, C. Lendvai, P. Lombardi, I. Machulin, S. Malvezzi, J. Maneira, I. Manno, D. Manuzio, G. Manuzio, F. Masetti, A. Martemianov, U. Mazzucato, K. McCarty, E. Meroni, L. Miramonti, M. E. Monzani, P. Musico, L. Niedermeier, L. Oberauer, M. Obolensky, F. Ortica, M. Pallavicini, L. Papp, L. Perasso, A. Pocar, O. A. Ponkratenko, R. S. Raghavan, G. Ranucci, A. Razeto, A. Sabelnikov, C. Salvo, R. Scardaoni, D. Schimizzi, S. Schoenert, H. Simgen, T. Shutt, M. Skorokhvatov, O. Smirnov, A. Sonnenschein, A. Sotnikov, S. Sukhotin, V. Tarasenkov, R. Tartaglia, G. Testera, V. I. Tretyak, D. Vignaud, R. B. Vogelaar, V. Vyrodov, M. Wojcik, O. Zaimidoroga, Y. G. Zdesenko, G. Zuzel
  • Virginia Polytechnic Institute and State University
  • LNGSSS17
  • University of Pavia
  • Laboratoire de Physique Corpusculaire et Cosmologie
  • University of Milan
  • Princeton University
  • Max-Planck-Institut für Kernphysik
  • Queen's University
  • Technical University of Munich
  • Institute for Nuclear Research
  • Joint Inst. for Nuclear Research
  • Petersburg Nuclear Phys. Inst.
  • Massachusetts Institute of Technology
  • Università di Perugia
  • National Research Centre "Kurchatov Institute"
  • Istituto Nazionale per la Fisica della Materia
  • Wigner Research Centre for Physics
  • Alcatel-Lucent
  • Jagiellonian University

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

The results of background measurements with the second version of the BOREXINO Counting Test Facility (CTF-II), installed in the Gran Sasso Underground Laboratory, were used to obtain limits on the instability of nucleons, bounded in nuclei, for decays into invisible channels (inv): disappearance, decays to neutrinos, etc. The approach consisted of a search for decays of unstable nuclides resulting from N and N N decays of parent 12C, 13C and 16O nuclei in the liquid scintillator and the water shield of the CTF. Due to the extremely low background and the large mass (4.2 t) of the CTF detector, the most stringent (or competitive) up-to-date experimental bounds have been established: τ(n → inv) > 1.8 × 1025 yr, τ(p → inv) > 1.1 × 1026 yr, τ(nn → inv) > 4.9 × 1025 yr and τ(pp → inv) > 5.0 × 1025 yr, all at 90% C.L.

Original languageEnglish
Pages (from-to)23-34
Number of pages12
JournalPhysics Letters B
Volume563
Issue number1-2
DOIs
StatePublished - 19 Jun 2003

Keywords

  • Baryon number conservation
  • Proton decay
  • Scintillation detector

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