Two Neutrino Double Beta (2νββ) Decays into Excited States
|
|
- Allen Woods
- 6 years ago
- Views:
Transcription
1 Two Neutrino Double Beta (2νββ) Decays into Excited States International School of Subnuclear Physics 54 th Course: The new physics frontiers in the LHC-2 era Erice, 17/06/2016 Björn Lehnert TU-Dresden, Germany Carleton University, Canada
2 Neutrinoless Double Beta (0νββ) Decay proton number Z 2 :(Z, A)! (Z +2,A)+2e +2 e 0 :(Z, A)! (Z +2,A)+2e 76 Ge: 2039 kev (T1/2 = 1.9 x yr) (T1/2 > 2.1 x yr) in 76 Ge neutron number N - Lepton Number Violation (LNV) - Neutrinos are Majorana particles - Indication of neutrino mass Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 2
3 T 0 1/2 M Standard Mechanism of 0νββ Decay 1 = G 0 M 0 2 m ee 2 measured half-life phase space factor nuclear matrix element effective Majorana neutrino mass atomic physics nuclear physics particle physics Nuclear Matrix Elements (NME) are model dependent and have large theoretical uncertainties (factor 2-3) mlightest [ev] arxiv: v2 (2009) Conversion of T1/2 into neutrino mass dominated by uncertainty of NME calculation Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 3
4 Non-Standard Mechanism of 0νββ Decay Possible processes (not exhaustive ) PHYSICAL REVIEW D 83, (2011) light Majorana Higgs triplet SUSY particle right handed currents If 0νββ decay is discovered, the LNV mechanism is not clear Other approaches e.g. LHC 0νββ observation in multiple isotopes can help to disentangle the mechanism Strong motivation for different DBD experiments / isotopes NMEs have to be knows precisely Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 4
5 Improvement of Nuclear Matrix Elements Ge Qββ= kev h 76 As kev 2 : 0 : T 2 1/2 T 0 1/2 1 = G 2 M = G 0 M 0 2 m ee % 64% kev kev kev Se kev Measurement of 2νββ decays allow direct test of NME calculations Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 5
6 Improvement of Nuclear Matrix Elements Ge Qββ= kev h 76 As kev kev kev 2 : 0 : T 2 1/2 T 0 1/2 1 = G 2 M = G 0 M 0 2 m ee % 64% kev kev kev Se kev Decays into excited states give an additional possibility to test NME calculations and can constrain nuclear model parameters (ga, gpp in QRPA) So far 2νββ transition discovered in 100 Mo (1995) and 150 Nd (2004) Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 6
7 2νββ Excited States: Overview Experimental approaches: Direct theoretical calculation with various nuclear models Often very inconsistent Use ratio of NME and PSF which cancels some uncertainties (e.g. ga) Then scale with measured ground state T1/2 Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 7
8 2νββ Excited States: Overview Experimental approaches: Direct theoretical calculation with various nuclear models Often very inconsistent Use ratio of NME and PSF which cancels some uncertainties (e.g. ga) Then scale with measured ground state T1/2 Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 8
9 GERDA = Germanium Detector Array Low background experiment: Reducing environmental radioactivity HPGe detectors in liquid argon (LAr): Shielding, cooling, active scintillation veto clean room lock system water tank HPGe detector array LAr cryostat Phase I: Nov till May 2013 Phase II: Since Dec Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 9
10 Laboratori Nazionali del Gran Sasso in Italy underground labs outside lab 1400m overburden (3500 m.w.e.) muon flux suppressed by factor 106 L Aquila GERDA Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 10
11 Analysis: 76 Ge 2νββ Decay into Excited States most probable transition experimental sensitivity reaches predictions Best previous experimental result: Theoretical predictions for 2νββ νββ 0 + 1: T1/2 > yr nuclear model year T1/2 JETP Lett. 72 (2000) Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States HFB yr QRPA yr QRPA yr QRPA yr QRPA 1997 ( ) yr QRPA 2014 ( ) yr IBM yr ShM 2014 ( ) yr 11
12 Analysis: 76 Ge 2νββ Decay into Excited States most probable transition experimental sensitivity reaches predictions 2-Detector coincidences Phase I data set: detector events 2νββ Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 12
13 Analysis: 76 Ge 2νββ Decay into Excited States Signal Monte Carlo (Geant4) Background Monte Carlo Cut and count analysis (background from sidebands) Signal selection cuts: 1 of 2 detector has one of the ɣ-energies Other detector above certain threshold Background rejection cuts: Excluding background ɣ-lines ( 42 K, 214 Bi, 108m Ag) Select only detector-detector pairs which contribute to sensitivity Tuning ad-hoc cut parameters to maximize sensitivity Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 13
14 Analysis: 76 Ge 2νββ Decay into Excited States Signal Monte Carlo (Geant4) Background Monte Carlo Cut and count analysis (background from sidebands) Signal selection cuts: 1 of 2 detector has one of the ɣ-energies Other detector above certain threshold Background rejection cuts: Excluding background ɣ-lines ( 42 K, 214 Bi, 108m Ag) Select only detector-detector pairs which contribute to sensitivity Tuning ad-hoc cut parameters to maximize sensitivity Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 14
15 Analysis: 76 Ge 2νββ Decay into Excited States signal- region sideband region for background evaluation all 2- detectorevents background model 5 events in signal region, 8.5 events expected No signal observed Detection efficiency 0.91%, exposure 22.3 kg yr Lower half-life limit: T1.2 > yr (90% CL) Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 15
16 Analysis: 76 Ge 2νββ Decay into Excited States Experimental results decay mode 2νββ νββ νββ T1/2 (90% CL) > yr > yr > yr J. Phys. G: Nucl. Part. Phys. 42 (2015) Theoretical predictions for 2νββ nuclear model year T1/2 HFB yr QRPA yr QRPA yr QRPA yr QRPA 1997 ( ) yr QRPA 2014 ( ) yr IBM yr ShM 2014 ( ) yr Half-life limits improved by 2 orders of magnitude Most old NME calculations excluded for mode Sensitivity in Phase II of T1/2 > yr for mode Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 16
17 Conclusions 0νββ decay tests LNV and Majorana nature of neutrinos Standard interpretation: Dominant light Majorana neutrino exchange Access to neutrino mass (mee) Non-standard interpretation: Other LNV processes dominant or mixture NMEs crucial to connect T1/2 and mee (or LNV parameter) Currently large uncertainties for NMEs (factor 2-3) Improvement with 2νββ decay measurements (ground or excited states) Analysis for 76 Ge with GERDA Phase I data 2 orders of magnitude improvement Many older NME calculations excluded New generation of 0νββ will soon discover more 2νββ transitions Erice, 17/06/16 Bjoern Lehnert 2νββ into Excited States 17
18 Backup 18
19 Experimental Overview of Neutrino Masses Beta-decay KATRIN, MARE, Echo Limit: m < 2.3 ev (model independent) Cosmology Planck, LSST,... Limit: m < 0.28 ev (model dependent) Neutrinoless DBD GERDA, EXO, KamLAND- ZEN,... Limit: m < ev (model dependent) 19
20 Schechter Valle Standard process: Light Majorana neutrino exchange There are also other lepton number violating processes that can trigger 0νββ Schechter-Valle theorem: If 0νββ exists, it can always be interpreted as a neutrino Majorana mass term Contribution of Majorana mass terms to neutrino mass might be very small 20
21 NME only 1 + : only GT all states: GT + Fermi 21
22 Other DBD Isotopes decay final state particles candidate 2νβ - β - (Z,A) (Z+2,A) + 2e - + 2ν νECEC (Z,A) + 2e - (Z-2,A) + 2ν 34 2νβ + EC (Z,A) + e - (Z-2,A) + e + + 2ν 19 2νβ + β + (Z,A) (Z-2,A) + 2e + + 2ν 6 Isobar A=76 Sr mass excess (MeV) Zn Ga Ge As Br Se Rb Kr protons Z 22
23 DBD Isotopes Effective neutrino mass: (only for dominant light Majorana neutrino exchange) G 0 phase space factor (atomic physics) matrix element (nuclear physics) Beyond SM process (particle physics) 0νββ half-life (mee = 1eV) PHYSICAL REVIEW C 87, (2013) 23
24 0νββ Global Picture 24
25 Sensitivity and Experimental Approaches Sensitivity: (for Gaussian background) Advantage 76 Ge: Well known HPGe detector technology Excellent energy resolution O(0.1%) Intrinsic low background (Semiconductor) Disadvantages 76 Ge: Expensive enrichment (7.8% to 87%) Difficult to scale Q-value < 2614 kev of 208 Tl 25
26 The$GERDA$Collabora0on$ h5p:// INR% Moscow% ITEP% Moscow% Kurchatov%% Ins3tute% Laboratori Nazionali del Gran Sasso 16$ins0tu0ons$ ~100$members$ 26
27 GERDA Timeline Commissioning Phase I Transition to Phase II Phase II 2010 Nov 2011 May 2013 Dec 2015 very early GERDA spectrum mini-shrouds (MS) Larger 42 Ar contribution than expected 1.5 years of commissioning to understand and mitigate 42 K background Conclusion: 42 K is charged and attracted by HV Installation of mini-shroud in Phase I Test with HV potentials on MS 27
28 High Purity Germanium (HPGe) Detectors standard technology since 1980s 76 Ge intrinsic in germanium 7.8% 76 Ge enrichment to 87% very good energy resolution 0.1% 28
29 High Purity Germanium Detectors Detectors enriched to contain 87% 76 Ge Semi-coaxial Ge detector: Standard design for gamma spectroscopy Major detector for Phase I Large up to 3 kg Thick n + electrode 2 mm e - hole Broad Energy Ge (BEGe) detector: Major detector for Phase II Small around 600 g Thin n + electrode <1 mm Better energy resolution Superior pulse shape discrimination 29
30 100 Mo Gammas: kev and kev [1] First discovered in 1995 by Barabash et al.: Phys. Lett. B, vol. 345, pp (1995) [2] Latest measurement by NEMO-3 Collaboration: Nucl. Phys. A, vol. 925, pp (2014) [2] 2.6 kg of enriched metallic 100 Mo 600 cm 3 HPGe detector 3.3% 540 kev Exp [2]: T1/2 = 7.5± yr QRPA: T1/2 = ( ) yr IBM-2: T1/2 = yr 30
31 150 Nd Gammas: kev and kev [1] First discovered in 2004 by Barabash et al.: JETP Lett., vol. 79, pp (2004) [2] Latest measurement by Barabash et al.: Phys. Rev. C, vol. 79, no. 4, p (2009) [2] 3 kg of natural Nd2O3 (153 g 150 Nd) HPGe: 2.3% 334 kev [2]: T1/2 = yr IBM-2: T1/2 = yr [2] 31
32 CUORICINO: 130 Te EXO-200: 136 Xe ϵ=0.5% ϵ=3.0% single site multi site ϵ=1.3% Future CUORE 19 towers x 13 floors 11.3 kg of TeO2 bolometers ɣ: 536 kev and 1257 kev; β <734 kev T1/2 > yr [Phys. Rev. C (2012)] QRPA: T1/2 = ( ) yr IBM-2: T1/2 = yr 80 kg liquid enriched Xe TPC Complicated analysis without segmentation ɣ: 761 kev and 819 kev; β: <879 kev T1/2 > yr [PhD Thesis Yung-Ruey Yen (2013)] IBM-2: T1/2 = yr 32
Excited State Transitions in Double Beta Decay: A brief Review
Excited State Transitions in Double Beta Decay: A brief Review Fifteenth International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (CGS15) Dresden 26/08/2014 Björn Lehnert Institut für
More informationNeutrinoless Double Beta Decay for Particle Physicists
Neutrinoless Double Beta Decay for Particle Physicists GK PhD Presentation Björn Lehnert Institut für Kern- und Teilchenphysik Berlin, 04/10/2011 About this talk Double beta decay: Particle physics implications
More informationGERDA: The GERmanium Detector Array for the search for neutrinoless decays of 76 Ge. Allen Caldwell Max-Planck-Institut für Physik
GERDA: The GERmanium Detector Array for the search for neutrinoless decays of 76 Ge Allen Caldwell Max-Planck-Institut für Physik What we know Mass Scale NORMAL INVERTED m 12 2 known m 13 2 known Mixing
More informationBackground Free Search for 0 Decay of 76Ge with GERDA
Background Free Search for 0 Decay of 76Ge with GERDA Victoria Wagner for the GERDA collaboration Max-Planck-Institut für Kernphysik Rencontres de Moriond, Electro Weak La Thuile, March 24 2017 The GERDA
More informationThe GERDA Experiment:
The GERDA Experiment: a search for neutrinoless double beta decay Max-Planck-Institute for Physics, Munich now at University of Wisconsin, Madison on behalf of the GERDA Collaboration Outline: Motivation
More informationL esperimento GERDA. GERDA - gruppo INFN. L Aquila, Congresso SIF, 30/09/2011. OUTLINE: GERDA Motivations GERDA Status GERDA Future plans
L esperimento GERDA Balata M., Bellotti E., Benato G., Bettini A., Brugnera R., Cattadori C., Garfagnini A., Hemmer S., Iannucci L., Junker M., Laubenstein M., Nisi S., Pandola L., Pullia A., Riboldi S.,
More informationGERDA experiment A search for neutrinoless double beta decay. Roberto Santorelli (Physik-Institut der Universität Zürich)
GERDA experiment A search for neutrinoless double beta decay Roberto Santorelli (Physik-Institut der Universität Zürich) on behalf of the GERDA collaboration ÖPG/SPS/ÖGAA meeting 04/09/09 Neutrinos mixing
More information-> to worldwide experiments searching for neutrinoless double beta decay
From Baksan to -> A.Smolnikov International Session-Conference of RAS "Physics of fundamental interactions dedicated to 50th anniversary of Baksan Neutrino Observatory, Nalchik, Russia, June 6-8, 2017
More informationThe GERmanium Detector Array
The GERmanium Detector Array n n ν=v p e - e - p Outline: Exp. issues of 0νββ-decay of 76 Ge Concept of GERDA Status of the experiment Summary and conclusions Kevin Kröninger (Max-Planck-Institut für Physik,
More informationHEROICA: a test facility for the characterization of BEGe detectors for the GERDA experiment
Physikalisches Institut Kepler Center for Astro and Particle Physics : a test facility for the characterization of BEGe detectors for the GERDA experiment Raphael Falkenstein for the GERDA collaboration
More informationDouble Beta Present Activities in Europe
APPEAL Workshop 19-21 February 2007, Japan Double Beta Present Activities in Europe Xavier Sarazin Laboratoire de l Accélérateur Linéaire Orsay France Germanium detector Bolometers CdZnTe semiconductors
More informationTHE CRYOGENIC UNDERGROUND OBSERVATORY FOR RARE EVENTS: STATUS AND PROSPECTS
THE CRYOGENIC UNDERGROUND OBSERVATORY FOR RARE EVENTS: STATUS AND PROSPECTS Eric B. Norman Dept. of Nuclear Engineering Univ. of California, Berkeley, CA U. S. A. Recent results in n physics Neutrinos
More informationGERDA & the future of 76 Ge-based experiments
GERDA & the future of 76 Ge-based experiments Matteo Agostini on behalf of the GERDA Collaboration Technische Universität München (TUM), Germany Gran Sasso Science Institute (INFN), L Aquila, Italy 25th
More informationResults on neutrinoless double beta decay of 76 Ge from the GERDA experiment
EPJ Web of Conferences 95, 04049 (05) DOI:.5/ epjconf/ 059504049 C Owned by the authors, published by EDP Sciences, 05 Results on neutrinoless double beta decay of 76 Ge from the GERDA experiment Dimitrios
More informationHow can we search for double beta decay? Carter Hall University of Maryland
How can we search for double beta decay? Carter Hall University of Maryland 1 Neutrinoless Double Beta Decay (ββ0ν) Forbidden if neutrino mass is Dirac only N(Z,A) N(Z+2,A)e - e - e L - 2n W-W- ν R +εν
More informationBjörn Lehnert. Search for double beta decays of palladium isotopes into excited states
Search for double beta decays of palladium isotopes into excited states INTERNATIONAL SCHOOL OF NUCLEAR PHYSICS 35th Course Erice 23/09/2013 Björn Lehnert Institut für Kern- und Teilchenphysik Outline
More informationK. Zuber, Techn. Univ. Dresden Cocoyoc, Status of double beta decay searches
K. Zuber, Techn. Univ. Dresden Status of double beta decay searches How to explain everything about double beta in 45 mins Cocoyoc, 6.1.2009 Contents General introduction Experimental considerations GERDA
More informationDesign, Construction, Operation, and Simulation of a Radioactivity Assay Chamber
Design, Construction, Operation, and Simulation of a Radioactivity Assay Chamber Wesley Ketchum and Abe Reddy EWI Group, UW REU 2006 Outline Neutrino Physics Background Double Beta Decay and the Majorana
More informationStatus and Perspectives of the COBRA-Experiment
Status and Perspectives of the COBRA-Experiment Jan Tebrügge for the COBRA Collaboration Status and Perspectives of the COBRA-Experiment Jan Tebrügge beta decays for thedouble COBRA Collaboration CdZnTe
More informationSearch for 0νββ-decay with GERDA Phase II
Search for 0νββ-decay with GERDA Phase II (MPI für Physik) for the collaboration GERDA OUTLINE: Phase I background results Phase II data taking Phase II background \wo cuts LAr veto and PSD cuts 0νββ result
More informationFirst results on neutrinoless double beta decay of 82 Se with CUPID-0
First results on neutrinoless double beta decay of 82 Se with CUPID-0 Lorenzo Pagnanini on behalf of the CUPID-0 collaboration 30 th Rencontres de Blois CUPID: a next generation experiment CUPID (CUORE
More informationThe Gerda Experiment for the Search of Neutrinoless Double Beta Decay
The Gerda Experiment for the Search of Neutrinoless Double Beta Decay Manuel Walter for the Gerda collaboration Physik-Institut, Universität Zürich, 8057 Zürich, Switzerland DOI: will be assigned The Gerda
More informationResults on neutrinoless double beta decay of 76 Ge from GERDA Phase I
Home Search Collections Journals About Contact us My IOPscience Results on neutrinoless double beta decay of 76 Ge from GERDA Phase I This content has been downloaded from IOPscience. Please scroll down
More informationa step forward exploring the inverted hierarchy region of the neutrino mass
a step forward exploring the inverted hierarchy region of the neutrino mass Maria Martinez (U. La Sapienza, Rome) on behalf of the CUPID-0 collaboration 28th Rencontres de Blois, May 29 - June 03 (2016)
More informationCosmogenic background for the GERDA experiment. Luciano Pandola INFN, Laboratori del Gran Sasso, Italy
Cosmogenic background for the GERDA experiment Luciano Pandola INFN, Laboratori del Gran Sasso, Italy Cosmogenic Activity and Background Workshop, Berkeley April 15 th, 2011 GERDA experiment at LNGS The
More informationStatus of the CUORE and CUORE-0 experiments at Gran Sasso
Status of the CUORE and CUORE-0 experiments at Gran Sasso S. Di Domizio INFN and University of Genova for the CUORE collaboration Weak Interactions and Neutrinos Natal, September 19 2013 Neutrinoless double
More informationKinematic searches. Relativity. Uncertainty. Best candidate: Using molecular tritium, daughter will be Kai Zuber 25
Kinematic searches Relativity Uncertainty Best candidate: Using molecular tritium, daughter will be 12.06.2014 Kai Zuber 25 Tritium beta decay Half-life :12.3 years Matrix element: 5.55 Endpoint energy:
More informationNeutrinoless Double Beta Decay. Phys 135c Spring 2007 Michael Mendenhall
Neutrinoless Double Beta Decay Phys 135c Spring 2007 Michael Mendenhall Theory Overview neutrino Lagrangian ν c iγ 2 γ 0 ν T L ν = M D [ν R ν L + ν c LνR] c }{{} + M L [ν c Lν L + ν L νl] c + M R [ν c
More informationProspects for kev-dm searches with the GERDA experiment
Physik-Institut Prospects for kev-dm searches with the GERDA experiment Roman Hiller for the GERDA collaboration 29/03/2017 Page 1 GERDA concept Cleanroom Lock systen Enriched 76 Ge detectors Cryostat
More informationCANDLES Experiment Current Status and Future Plan. X. Li for the CANDLES Collaboration
CANDLES Experiment Current Status and Future Plan X. Li for the CANDLES Collaboration 1 Neutrinoless Double Beta Decay (0νββ) 2νββ decay 0νββ decay (A, Z) => (A, Z+2) + 2e - process beyond Standard Model
More informationTo Be or Not To Be: Majorana Neutrinos, Grand Unification, and the Existence of the Universe
To Be or Not To Be: Majorana Neutrinos, Grand Unification, and the Existence of the Universe Assistant Professor, University of Washington Aug. 3, 2015 The Neutrino Meitner and Hahn (1911): 210 Bi ( Radium
More informationNeutrinoless Double-Beta Decay
Neutrinoless Double-Beta Decay Michal Tarka Stony Brook University ELBA XIV, 27 June 2016 Outline Neutrinoless double-beta decay (0νββ) Historical background & Motivation Neutrino masses Overview of (2νββ
More informationInvestigation and development of the suppression methods of the 42 K background in LArGe
bb G E R D A Investigation and development of the suppression methods of the 42 K background in LArGe A.V. Lubashevskiy on behalf of GERDA collaboration, Max-Planck-Institut für Kernphysik, Heidelberg.
More informationNEMO-3 latest results
NEMO-3 latest results Thibaud Le Noblet LAPP On behalf of the NEMO collaboration GdR neutrino 29-30 mai 2017 - APC Outline Neutrinoless double beta decay Tracker-calorimeter technique NEMO-3 detector Latest
More informationK. Zuber, Uni. Sussex NNR 05, Osaka Status of COBRA
K. Zuber, Uni. Sussex NNR 05, Osaka 2-4.12. 2005 Status of COBRA Contents Introduction Current status of COBRA The 64 detector array Longer term planning Summary C0BRA Use large amount of CdZnTe Semiconductor
More informationStatus of Cuore experiment and last results from Cuoricino
Status of Cuore experiment and last results from Cuoricino on behalf of the Cuore collaboration Istituto Nazionale di Fisica Nucleare, Genova E-mail: elena.guardincerri@ge.infn.it CUORE is a cryogenic-bolometer
More informationLUCIFER. Marco Vignati INFN Roma XCVIII congresso SIF, Napoli, 21 Settembre 2012
LUCIFER Marco Vignati INFN Roma XCVIII congresso SIF, Napoli, 21 Settembre 212 Neutrino nature Except for the total leptonic number the neutrino is a neutral fermion. So if the total leptonic number is
More informationBackground rejection techniques in Germanium 0νββ-decay experiments. ν=v
Background rejection techniques in Germanium 0νββ-decay experiments n p ν=v n eep II. Physikalisches Institut Universität Göttingen Institutsseminar des Inst. für Kern- und Teilchenphysik, Outline Neutrinos
More informationThe GERDA Neutrinoless double beta decay experiment
The GERDA Neutrinoless double beta decay experiment Stefan Schönert, MPIK Heidelberg Workshop on Precision Measurements at Low Energy January 18 th & 19 th 2007 Paul Scherrer Institut, Villingen, Switzerland
More informationSearch for Majorana neutrinos and double beta decay experiments
Search for Majorana neutrinos and double beta decay experiments Xavier Sarazin Laboratoire de l Accélérateur Linéaire (CNRS-IN2P3, Univ. Paris-Sud 11) Majorana Neutrino Neutrino is the only fermion with
More informationStatus of the CUORE experiment at Gran Sasso
University and INFN Genova ICHEP 2012 MELBOURNE JULY 2012 on behalf of the CUORE collaboration Status of the CUORE experiment at Gran Sasso Double beta decay Rare nuclear decay: (A, Z) (A, Z+2) + 2e- (+2
More informationNew results of CUORICINO on the way to CUORE
New results of CUORICINO on the way to CUORE Laboratori Nazionali del Gran Sasso of INFN On behalf of the CUORE Collaboration The CUORE experiment CUORE (Cryogenic Underground Observatory for Rare Events)
More informationConsiderations for future neutrinoless double beta decay experiments
Considerations for future neutrinoless double beta decay experiments Table 4: IHE characteristics for the different candidates. For each isotope we quote the type of scintillating crystal, the total mass
More informationThe Majorana Neutrinoless Double-Beta Decay Experiment
The Majorana Neutrinoless Double-Beta Decay Experiment A proposed detector to search for neutrinoless double-beta decay Reyco Henning Lawrence Berkeley National Laboratory for the Majorana Collaboration
More informationA Liquid Argon Scintillation Veto for the GERDA Experiment
A Liquid Argon Scintillation Veto for the GERDA Experiment for the GERDA Collaboration 2nd European Nuclear Physics Conference Bucharest, 18/09/2012 Institut für Kern- und Teilchenphysik GERDA - GERmanium
More informationStatus of the CUORE and CUORE-0 experiments at Gran Sasso
Status of the CUORE and CUORE-0 experiments at Gran Sasso S. Di Domizio INFN and University of Genova for the CUORE collaboration Les Rencontres de Physique de la Vallée d'aoste La Thuile, February 25
More informationExperimental Searches for Neutrinoless Double-Beta Decays in 76-Ge Alan Poon
Experimental Searches for Neutrinoless Double-Beta Decays in 76-Ge Alan Poon Institute for Nuclear and Particle Astrophysics Nuclear Science Division 1 Outline Introduction - 0νββ decay (see Agostini s
More informationSearch for Neutrinoless Double- Beta Decay with CUORE
Search for Neutrinoless Double- Beta Decay with CUORE Kyungeun E. Lim (on behalf of the CUORE collaboration) Jan. 14, 2014, WIDG Seminar, Yale University What we (don t) know about Neutrinos Neutrino Mass
More informationGERDA Status and Perspectives
GERDA Status and Perspectives K.T.Knöpfle for the GERDA collaboration MPI Kernphysik, Heidelberg ktkno@mpi-hd.mpg.de NOW2012, Sep 9-16, Conca Specchiulla, Otranto, Lecce, Italy About 100 members, 19 institutions,
More informationLUCIFER: Neutrinoless Double Beta Decay search with scintillating bolometers
LUCIFER: Neutrinoless Double Beta Decay search with scintillating bolometers Dipertimento di Fisica - Sapienza, Università di Roma, I-185 Roma, Italy E-mail: gabriele.piperno@roma1.infn.it The Neutrinoless
More informationContents. General Introduction Low background activities Pixel activities Summary and Outlook. Kai Zuber
Contents General Introduction Low background activities Pixel activities Summary and Outlook COBRA Use large amount of CdZnTe Semiconductor Detectors Large array of CdZnTe detectors K. Zuber, Phys. Lett.
More informationarxiv: v1 [nucl-ex] 14 May 2013
Proceedings of the PIC 2012, Štrbské Pleso, Slovakia RECENT RESULTS IN NEUTRINOLESS DOUBLE BETA DECAY arxiv:1305.3306v1 [nucl-ex] 14 May 2013 LISA J. KAUFMAN Indiana University Department of Physics and
More informationDOUBLE BETA DECAY TO THE EXCITED STATES: REVIEW A.S. BARABASH ITEP, MOSCOW
DOUBLE BETA DECAY TO THE EXCITED STATES: REVIEW A.S. BARABASH ITEP, MOSCOW MEDEX'17, Prague, Czech Republic, May 29- June 02, 2017 OUTLINE Introduction 2 - (2) -decay to the excited ststates 2 - (0) decay
More informationStatus of CUORE and Results from CUORICINO. SERGIO DI DOMIZIO UNIVERSITÀ & INFN GENOVA On behalf of the CUORE Collaboration
Status of CUORE and Results from CUORICINO SERGIO DI DOMIZIO UNIVERSITÀ & INFN GENOVA On behalf of the CUORE Collaboration 11th Seminar on Innovative Particle and Radiation Detectors Siena, 1 October 2008
More informationEsperimenti bolometrici al Gran Sasso: CUORE e CRESST
Esperimenti bolometrici al Gran Sasso: CUORE e CRESST Marco Vignati 24 Ottobre 2011 0νDBD in Theory Nuclear process: (A,Z) (A,Z+2) + 2 e - Can only happen if lepton number is not conserved. The decay probability
More informationNeutron Activation of 76Ge
Neutron Activation of 76Ge Georg Meierhofer people involved: P. Grabmayr J. Jochum Kepler Center for Astro and Particle Physics University Tübingen P. Kudejova L. Canella J. Jolie IKP, Universität zu Köln
More informationResults from EXO 200. Journal of Physics: Conference Series. Related content PAPER OPEN ACCESS
Journal of Physics: Conference Series PAPER OPEN ACCESS Results from EXO 200 To cite this article: D J Auty and EXO-200 Collaboration 2015 J. Phys.: Conf. Ser. 598 012012 Related content - ON VARIABLE
More informationIs the Neutrino its Own Antiparticle?
Is the Neutrino its Own Antiparticle? CENPA REU Summer Seminar Series University of Washington, Seattle, WA July 22, 2013 Outline What s a neutrino? The case for Majorana neutrinos Probing the nature of
More informationThe energy calibration system of the CUORE double beta decay bolometric experiment
The energy calibration system of the CUORE double beta decay bolometric experiment Samuele Sangiorgio on behalf of the CUORE collaboration see also, on CUORE, Thomas Bloxham in Session G14, Sunday morning
More informationStudies of the XENON100 Electromagnetic Background
Studies of the XENON100 Electromagnetic Background Daniel Mayani Physik-Institut University of Zurich PhD Seminar PSI, August 26-27, 2015 Searching for elusive particles The main challenge for experiments
More informationNeutrino Masses and Mixing
Neutrino Masses and Mixing < Why so different??? (Harrison, Perkins, Scott 1999) The Mass Puzzle Seesaw mechanism L R m m D m 2 D M m D M m D L R M Heavy Majorana Neutrino Connection with high mass scales
More informationPhase II upgrade of the Gerda experiment for the search of neutrinoless double beta decay
Available online at www.sciencedirect.com ScienceDirect Physics Procedia 61 (2015 ) 254 259 Phase II upgrade of the Gerda experiment for the search of neutrinoless double beta decay B. Majorovits for the
More informationK. Zuber, Techn. Univ. Dresden Dresden, 17. Feb Double beta decay searches
K. Zuber, Techn. Univ. Dresden Dresden, 17. Feb. 2009 Double beta decay searches How to explain everything about double beta in 45 mins Cocoyoc, 6.1.2009 Contents General Introduction Experimental considerations
More informationEXO experiment. Jesse Wodin EXO group Sept 13, DOE Site Visit: Sept 13-14,
EXO experiment Jesse Wodin EXO group Sept 13, 2010 DOE Site Visit: Sept 13-14, 2010 1 EXO program A phased program aimed at building an enriched xenon double beta decay experiment with a one or more tonne
More informationPPC Ge detectors for dark matter, neutrino-less double beta decay and CNS measurements
PPC Ge detectors for dark matter, neutrino-less double beta decay and CNS measurements Ryan Martin, Queen s University Coherent Neutrino Scattering Experiment Workshop, Texas A&M 12 November 2015 R. Martin,
More informationDescription of 0νββ and 2νββ decay using interacting boson model with isospin restoration. Jenni Kotila
Description of 0νββ and 2νββ decay using interacting boson model with isospin restoration Jenni Kotila FIDIPRO-HIP workshop on Nuclear Isospin Properties Helsinki Institute of Physics, Helsinki 16-17.10.2014
More informationK. Zuber, TU Dresden INT, Double beta decay experiments
, TU Dresden INT, 3.6. 2015 Double beta decay experiments Double beta decay (A,Z) (A,Z+2) +2 e - + 2ν e (A,Z) (A,Z+2) + 2 e - - 2νββ 0νββ Unique process to measure character of neutrino The smaller the
More informationK. Zuber, University of Sussex TU Dresden, 15. Oct Double beta decay
K. Zuber, University of Sussex TU Dresden, 15. Oct. 2007 Double beta decay Contents General Introduction Neutrino oscillations and DBD Experimental considerations GERDA COBRA SNO+ Outlook and summary Beta
More informationE15. Background suppression in GERDA Phase II. and its study in the LARGE low background set-up
Background suppression in GERDA Phase II and its study in the LARGE low background set-up bb Dušan Budjáš Technische Universität München for the GERDA collaboration http://www.mpi-hd.mpg.de/gerda E15 Modified
More informationThe LUCIFER project current status and perspective!!!
The LUCIFER project current status and perspective!!! Karoline Schäffner LNGS - Laboratori Nazionali del Gran Sasso, Italy! Neutrinos and Dark Matter in Nuclear Physics 2015 June 1-5, 2015, Jyväskylä,
More informationStatus of the AMoRE experiment searching for neutrinoless double beta decay of 100 Mo
Status of the AMoRE experiment searching for neutrinoless double beta decay of 100 Mo Hyon-Suk Jo Center for Underground Physics Institute for Basic Science INPC 2016 - Adelaide Convention Centre, Australia
More informationcryogenic calorimeter with particle identification for double beta decay search
cryogenic calorimeter with particle identification for double beta decay search Cuore Upgrade with Particle IDentification In the middle of 2015 INFN decided to support CUPID activity to develop: CUPID-0:
More informationBackground by Neutron Activation in GERDA
Background by Neutron Activation in GERDA Georg Meierhofer people involved: Kepler Center for Astro and Particle Physics University Tübingen P. Grabmayr J. Jochum P. Kudejova L. Canella J. Jolie IKP, Universität
More informationK. Zuber, Techn. Univ. Dresden Erlangen, 4. June Status and perspectives of the COBRA double beta decay experiment
K. Zuber, Techn. Univ. Dresden Erlangen, 4. June 2009 Status and perspectives of the COBRA double beta decay experiment Contents General Introduction Experimental considerations COBRA Summary and Outlook
More informationDirect dark matter search using liquid noble gases
Direct dark matter search using liquid noble gases Teresa Marrodán Undagoitia marrodan@physik.uzh.ch Physik Institut Universität Zürich Texas Symposium 2010, Heidelberg, 09.11.2010 Teresa Marrodán Undagoitia
More informationK. Zuber, TU Dresden DESY, 9/10 September In search of neutrinoless double beta decay
K. Zuber, TU Dresden DESY, 9/10 September 2008 In search of neutrinoless double beta decay Contents General Introduction Neutrino physics and DBD Experimental considerations GERDA COBRA SNO+ Outlook and
More informationLow Background Experiments and Material Assay. Tessa Johnson NSSC Summer School July 2016
Low Background Experiments and Material Assay Tessa Johnson NSSC Summer School July 2016 Outline How do we detect particles? Some interesting questions relating to particle physics How can particle detection
More informationarxiv: v1 [nucl-ex] 20 Dec 2008
Operation of a GERDA Phase I prototype detector in liquid argon and nitrogen M. Barnabé Heider a, A. Bakalyarov b, L. Bezrukov c, C. Cattadori d, O. Chkvorets a, K. Gusev b,e, M. Hult f, I. Kirpichnikov
More informationMajorana Double Beta Decay Search Project (Majorana Demonstrator)
Majorana Double Beta Decay Search Project (Majorana Demonstrator) Sergey Vasilyev University of Tennessee, Knoxville Seminar 03/26/2014 1 Outline Neutrino properties (short) Introduction to double-beta
More informationElectron Capture branching ratio measurements at TITAN-TRIUMF
Electron Capture branching ratio measurements at TITAN-TRIUMF T. Brunner, D. Frekers, A. Lapierre, R. Krücken, I. Tanihata, and J. Dillingfor the TITAN collaboration Canada s National Laboratory for Nuclear
More informationCUPID Advanced bolometric technologies for double beta decay search in France
May 29 th, 2017 CUPID Advanced bolometric technologies for double beta decay search in France Andrea Giuliani Outline The challenging quest for neutrinoless double beta decay The bolometric approach: from
More informationThe search for neutrino-less double beta decay with LNGS: status and perspectives
The search for neutrino-less double beta decay with GERDA @ LNGS: status and perspectives Stefan Schönert Physik Department, TUM On behalf of the GERDA collaboration Astroteilchenphysik in Deutschland,
More informationParticle Physics: Neutrinos part II
Particle Physics: Neutrinos part II José I. Crespo-Anadón Week 9: April 1, 2017 Columbia University Science Honors Program Course Policies Attendance Up to four absences Send email notifications of all
More informationWavelength Shifting Reflector Foils for Liquid Ar Scintillation Light
Wavelength Shifting Reflector Foils for Liquid Ar Scintillation Light DPG Frühjahrstagung Dresden, 5 March 2013 Double Beta Decay 2 ν ββ decay known for: 48 Ca, 76Ge, 82Se, 96Zr, 100Mo, 116Cd, 128Te, 150Nd,
More informationPar$cle and Neutrino Physics. Liang Yang University of Illinois at Urbana- Champaign Physics 403 April 15, 2014
Par$cle and Neutrino Physics Liang Yang University of Illinois at Urbana- Champaign Physics 403 April 15, 2014 1 SNOWMASS on the Mississippi Community study 2013 for the high energy community 10 year plan
More informationPauli. Davis Fermi. Majorana. Dirac. Koshiba. Reines. Pontecorvo. Goeppert-Mayer. Steve Elliott
Davis Fermi Pauli Dirac Majorana Pontecorvo Reines Koshiba Goeppert-Mayer Experimental Double Beta Decay Outline Experimental issues Upcoming experiments Conclusion Example Decay Scheme 2-76 As 0+ 76 Ge
More informationThe Search for Dark Matter with the XENON Experiment
The Search for Dark Matter with the XENON Experiment Elena Aprile Columbia University Paris TPC Workshop December 19, 2008 World Wide Dark Matter Searches Yangyang KIMS Homestake LUX SNOLAB DEAP/CLEAN
More informationSearch for Neutrinoless Double Beta Decay in the GERDA Experiment
Search for Neutrinoless Double Beta Decay in the GERDA Experiment Andrea Kirsch on behalf of the Gerda Collaboration Max-Planck Institut für Kernphysik, Heidelberg X th Recontres du Vietnam Flavour Physics
More informationMC Benchmarks for LAr Instrumentation in GERDA
MC Benchmarks for LAr Instrumentation in GERDA Björn Lehnert Institut für Kern- und Teilchenphysik TU-Dresden DPG, Mainz, 22/03/2012 GERDA - GERmanium Detector Array Novel idea: Operate germanium detectors
More informationStatus of the GERDA experiment
Status of the GERDA experiment Hardy Simgen Max-Planck-Institute for Nuclear Physics Heidelberg The GERDA experiment Next generation 76 Ge double beta decay experiment at Gran Sasso. Basic idea: Operation
More informationNeutrinoless double beta decay with 76Ge. Bernhard Schwingenheuer Max-Planck-Institut für Kernphysik, Heidelberg
Neutrinoless double beta decay with 76Ge Bernhard Schwingenheuer Max-Planck-Institut für Kernphysik, Heidelberg Standard Model no new physics found at the LHC so far, SM could be valid up to Planck scale
More informationDouble Beta Decay matrix elements, remarks and perspectives
Double Beta Decay matrix elements, remarks and perspectives Petr Vogel, Caltech NNR05 Workshop CAST/SPring-8 Dec. 4, 2005 Thanks to the discoveries of the recent past we know a lot about neutrinos. But,
More informationIs the Neutrino its Own Antiparticle?
Is the Neutrino its Own Antiparticle? PHYS 294A Jan 24, 2013 Outline What s a neutrino? The case for Majorana neutrinos Probing the nature of the neutrino with neutrinoless double-beta decay 2 What s a
More informationGERDA Phase II: status and prospects
GERDA Phase II: status and prospects Matthias Laubenstein, LNGS on behalf of the GERDA collaboration XLVII meeting of the Gran Sasso Scientific Committee, 03-04 April 2017, Assergi, Laboratori Nazionali
More informationPoS(EMC2006)007. Neutrino: Dirac or Majorana? Ettore Fiorini 1
1 Dipartimento di Fisica G.P.S.Occhialini,Universita di Milano-Bicocca and Istituto Nazionale di Fisica Nucleare, Sezione di Milano-Bicocca Piazza della Scienza 3, 20126 Milano,Italy E-mail: Ettore.Fiorini@mib.infn.it
More informationStatus of the CUORE and CUORE-0 Experiments at Gran Sasso
Status of the CUORE and CUORE-0 Experiments at Gran Sasso University of California, Berkeley E-mail: jlouellet@lbl.gov CUORE is a 741 kg array of TeO bolometers that will search for the neutrinoless double
More informationResults from GERDA Phase I and status of the upgrade to Phase II. Stefan Schönert (TU München) on behalf of the GERDA collabora;on
Results from GERDA Phase I and status of the upgrade to Phase II Stefan Schönert (TU München) on behalf of the GERDA collabora;on 1 The GERDA experiment @ LNGS plasac µ- veto clean room with lock and glove
More informationE.Fiorini, Neutrino 2004 Paris, June 17, For searches on neutrinoless ββ decay, WIMPs and axions interactions and on rare nuclear events
CUORE (Cryogenic Underground Osservatory for Rare Events) and CUORICINO E.Fiorini, Neutrino 2004 Paris, June 17, 2004 For searches on neutrinoless ββ decay, WIMPs and axions interactions and on rare nuclear
More informationRecent Results and Status of EXO-200 and the nexo Experiment
Recent Results and Status of EXO-200 and the nexo Experiment, for the EXO-200 and nexo Collaborations Physics Department, Carleton University, Ottawa, ON, Canada E-mail: licciard@physics.carleton.ca The
More informationarxiv: v1 [physics.ins-det] 1 Feb 2016
arxiv:1602.00364v1 [physics.ins-det] 1 Feb 2016 Solar neutrino interactions with liquid scintillators used for double beta-decay experiments 1. Introduction Hiroyasu Ejiri 1 and Kai Zuber 2 1. Research
More information