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Why Direct Measurements of the Neutrino Mass?

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Why Direct Measurements of the Neutrino Mass? My debts to Bruno 1. Double beta decay Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 1 Then not “on fashion” (Few believed on lepton number non conservation) But important for the two of us Experiments source = detector 48 48 - Ca => Ti + 2 e + ( 2ne ) Matheosian & Goldhaber 76 76 - Ge => Se + 2 e + ( 2ne ) E.Fiorini et al Bruno =.> DSDL =2 vs =2 A comment by Mrs. Wu Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 2 The Meeting in KIEV and Balatonfured Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 3 2. My first approach to a Reactor Neutrino oscillations? A proposal for the Caorso reactor => no nuclear energy in Italy Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 4 3.Discussion on weak neutral currents in Balatonfured and Milano In Gargamelle some skeptical Carlo Franzitetti; Le correnti neutre le lascio a Fiorini Cabibbo & Maiani Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 5 3. The discovery of weak neutral currents n e ne ne ne Z 0 Z0 p,n p,n p,n p,n Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 6 4.Solar neutrinos => the GALLEX experiment Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 7 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 8 Presentation at neutrino with Bruno Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 9 BRUNO returns to Italy ! Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 10 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 11 The great suggestion of Bruno => Neutrino oscillations Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 12 Neutrino oscillations => Mna – Mnb ≠ 0 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 13 <mCMB>from Anisotropy cosmology μKn nK WMAP Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 14 DASI Direct measurement of the neutrino mass b decay Limite attuale < 2 eV Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 15 The second mystery of Ettore Majorana Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 16 Dirac or Majorana neutrino? LEFT n: RIGHT n: → → Majorana <= => =>1937 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 17 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 18 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 19 Where to go ? Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 20 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 21 0n 25 EXO T 1/2 (136Xe) > 1.6 × 10 yr correspond <mn > 140–380me KAMLAND-ZEN > 3.4 × 1025 yr (Fukushima) 120-250 GERDA I => 0.2 -0.4 eV Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 22 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 23 CUORICINO CUORE0 CUORE Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 24 But Bruno was interested also in our problem of the Roman lead Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 25 A Roman “navis oneraria” sunk in Sardinia Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 26 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 27 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 28 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 29 Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 30 AN INPORTANT RECENT RESULT ON NEUTRINO OSCILLATIONS 2 2 P(na - nb ) = sen q[1.27 Dm L(km)/E(GeV)] Only q13 was missing ! After an indication by Double Chooz e Japan Risults from Orient: Daya Bay (China) and RENO (South Corea) 2 sin θ13 = 0.092 ± 0.016(stat) ± 0.005(syst) 2 sin θ13 = 0.103 ± 0:013(stat) ± 0:011(syst) If Bruno would still be alive what a triumph for him! Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 31 A non conventional conclusion An Italian and a Russian Two examples : 1. The cabbage 2. The pioneers house The best week of my life Mail by Samoel : “Dear Ettore, Bruno died yesterday night in the Dubna Hospital. It is a great loss for our science and his friends. I worked with him for 22 years and still thank God for that” Rome Sept.11,2013 Ettore Fiorini My debts to Bruno 32 .
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