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          Institute: MPI für Kernphysik     Collection: Neutrino Physics     Display Documents

ID: 474724.0, MPI für Kernphysik / Neutrino Physics
New experimental limits on the Pauli-forbidden transitions in 12C nuclei obtained with 485 days Borexino data
Authors:Bellini, G.; Bonetti, S.; 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.; Cadonati, L.; Pocar, A.; Calaprice, F.; Chavarria, A.; Dalnoki-Veress, F.; Galbiati, C.; Goretti, A.; Leung, M.; Loer, B.; Saldanha, R.; Xu, J.; Carraro, C.; Davini, S.; Guardincerri, E.; Manuzio, G.; Pallavicini, M.; Perasso, S.; Risso, P.; Salvo, C.; Testera, G.; Zavatarelli, S.; de Kerret, H.; Kryn, D.; Obolensky, M.; Vignaud, D.; Derbin, A.; Muratova, V.; Etenko, A.; Litvinovich, E.; Machulin, I.; Sabelnikov, A.; Skorokhvatov, M.; Sukhotin, S.; Fomenko, K.; Smirnov, O.; Sotnikov, A.; Zaimidoroga, O.; Gazzana, S.; Ghiano, C.; Ianni, Aldo; Korga, G.; Montanari, D.; Razeto, A.; Tartaglia, R.; Goeger-Neff, M.; Lewke, T.; Meindl, Q.; Oberauer, L.; von Feilitzsch, F.; Winter, Y.; Wurm, M.; Grieb, C.; Hardy, S.; Joyce, M.; Manecki, S.; Papp, L.; Raghavan, R.S.; Rountree, D.; Vogelaar, R.B.; Maneschg, W.; Schönert, S.; Simgen, H.; Zuzel, G.; Misiaszek, M.; Wojcik, M.; Ortica, F.; Romani, A.
Date of Publication (YYYY-MM-DD):2010-03-29
Title of Journal:Physical Review C
Issue / Number:3
Start Page:1
End Page:9
Sequence Number of Article:034317
Review Status:not specified
Audience:Experts Only
Abstract / Description:The Pauli exclusion principle (PEP) has been tested for nucleons (n,p) in 12C 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.
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group of M. Lindner
External Affiliations:1 Dipartimento di Fisica, Universita’ degli Studi e INFN, I-20133 Milano, Italy
2 Chemical Engineering Department, Princeton University, Princeton, New Jersey 08544, USA
3 Physics Department, University of Massachusetts, Amherst, Massachusetts 01003, USA
4 Physics Department, Princeton University, Princeton, New Jersey 08544, USA
5 Dipartimento di Fisica, Universita’ e INFN, Genova I-16146, Italy
6 Laboratoire AstroParticule et Cosmologie, F-75231 Paris Cedex 13, France
7 St. Petersburg Nuclear Physics Institute, RU-188350 Gatchina, Russia
8 RRC Kurchatov Institute, RU-123182 Moscow, Russia
9 Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
10 INFN Laboratori Nazionali del Gran Sasso, SS 17 bis Km 18+910, I-67010 Assergi (AQ), Italy
11 Physik Department, Technische Universitaet Muenchen, D-85747 Garching, Germany
12 Physics Department, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
14 M. Smoluchowski Institute of Physics, Jagellonian University, PL-30059 Krakow, Poland
15 Dipartimento di Chimica, Universita’ e INFN, I-06123 Perugia, Italy
URL:http://arxiv.org/pdf/0911.0548 [arxiv version]
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