A test of electric charge conservation with Borexino

Borexino Collaboration: M. Agostini , S. Appel , G. Bellini , J. Benziger , D. Bick , G. Bonfini , D. Bravo , B. Caccianiga

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F. Calaprice A. Caminata P. Cavalcante A. Chepurnov D. D'Angelo S. Davini A. Derbin L. Di Noto I. Drachnev A. Empl A. Etenko K. Fomenko D. Franco F. Gabriele C. Galbiati C. Ghiano M. Giammarchi M. Goeger-Neff A. Goretti M. Gromov C. Hagner E. Hungerford Aldo Ianni Andrea Ianni K. Jedrzejczak M. Kaiser V. Kobychev D. Korablev G. Korga D. Kryn M. Laubenstein B. Lehnert E. Litvinovich F. Lombardi P. Lombardi L. Ludhova G. Lukyanchenko I. Machulin S. Manecki W. Maneschg S. Marcocci E. Meroni M. Meyer L. Miramonti M. Misiaszek M. Montuschi P. Mosteiro V. Muratova B. Neumair L. Oberauer M. Obolensky F. Ortica K. Otis M. Pallavicini L. Papp L. Perasso A. Pocar G. Ranucci A. Razeto A. Re A. Romani R. Roncin N. Rossi S. Schoenert D. Semenov H. Simgen M. Skorokhvatov O. Smirnov A. Sotnikov S. Sukhotin Y. Suvorov R. Tartaglia G. Testera J. Thurn M. Toropova E. Unzhakov A. Vishneva R.B. Vogelaar F. von Feilitzsch H. Wang S. Weinz J. Winter M. Wojcik M. Wurm Z. Yokley O. Zaimidoroga S. Zavatarelli K. Zuber G. Zuzel

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classification ✦ hep-ex physics.ins-det

keywords borexinodetectorlimitbetterboundchargeconservationdecay

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Borexino is a liquid scintillation detector located deep underground at the Laboratori Nazionali del Gran Sasso (LNGS, Italy). Thanks to the unmatched radio-purity of the scintillator, and to the well understood detector response at low energy, a new limit on the stability of the electron for decay into a neutrino and a single mono-energetic photon was obtained. This new bound, tau > 6.6 10**28 yr at 90 % C.L., is two orders of magnitude better than the previous limit.

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A test of electric charge conservation with Borexino

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