Progress and Challenges in Neutrinoless Double Beta Decay

Europe/Rome
Meeting room (ECT*)

Meeting room

ECT*

Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
Emanuele Mereghetti - ( LANL ) (Los Alamos National Laboratory), Javier Menendez - ( University of Tokyo ) (University of Tokyo), Amy Nicholson - ( University of North Carolina ) (University of North Carolina), Saori Pastore - ( Washington University & LANL ) (Washington University & Los Alamos National Laboratory), Andre Walker-Loud - ( LBNL ) (Lawrence Berkeley National Laboratory)
Description

Progress and Challenges in Neutrinoless Double Beta Decay

Neutrinoless double-beta decay is the most sensitive laboratory probe of lepton number violation, and its detection is being pursued by ambitious experimental programs. The observation of this decay will have far reaching consequences: demonstrate that neutrinos are Majorana fermions, shed light on the neutrino absolute masses and mass-generation mechanism, and give insight into leptogenesis scenarios key to understand the matterantimatter asymmetry in the universe. The interpretation of a positive or null measurement, however, relies on the identification of the lepton-number-violating mechanism driving the decay, and on having reliable nuclear matrix elements. This workshop will focus on recent advances in lattice QCD, chiral effective field theory, and many-body nuclear theory towards the determination of the relevant lepton-number-violating decay channel, with associated transition operators, and the controlled calculation of the corresponding nuclear matrix elements; in addition, we will discuss the challenges that remain to be faced.

Main Topics:

  • the determination of the NLDBD transition operators for the standard mechanism of exchange of light Majorana neutrinos
  • the determination of the NLDBD transition operators for short-range LNV mechanisms, using input from LQCD and chiral EFT.
  • the establishment of strategies to include two-body currents in the calculation of nuclear matrix elements. In a second-order operator two-body currents in general give raise to four-body operators, which are difficult to handle in most many-body approaches
  • test nuclear matrix element calculations in very light nuclei, comparing quantum Monte Carlo results with other many-body approaches, such as the nuclear shell model, which can be applied in heavier nuclei directly relevant for experiments
  •  approximate test of the role of two-body currents for the nuclear quantum Monte Carlo calculations in very light-nuclei
  • determine which observables, or set of observables, can be used to validate nuclear matrix-element calculations: e.g. single-beta decay, two-neutrino double-beta decay, double charge-exchange reactions, or muon-capture inelastic neutrino scattering (that operate in a similar momentum-transfer regime as NLDBD)
  • discuss the connection with collider and phenomenology.
 

ECT*                                 FBK               

Secretariat - Susan Driessen
    • 08:30 09:00
      Registration 30m ECT* (Rustico hall)

      ECT*

      Rustico hall

    • 09:00 10:50
      Morning 1 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 10:50 11:15
      Coffee break
    • 11:15 12:00
      Morning 2 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 12:15 13:30
      Lunch
    • 13:45 16:00
      Afternoon Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 16:00 16:30
      Coffee break
    • 16:45 17:45
      Discussion Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 09:00 10:30
      Morning 1 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 10:30 11:15
      Coffee break
    • 11:15 12:00
      Morning 2 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 11:15
        Double beta matrix elements with coupled cluster 45m
        Speaker: Sam Novario
    • 12:15 13:30
      Lunch
    • 13:45 15:15
      Afternoon Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 13:45
        Single current matrix element of two-hadron states 45m
        Speaker: Raul Briceno
      • 14:30
        Two-current insertions of one-hadron state 45m
        Speaker: Matthias Schindler (University of South Carolina)
    • 15:15 15:45
      Coffee break
    • 16:00 17:00
      Discussion Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 09:00 10:30
      Morning 1 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 09:00
        Structure and Reactions of Light Nuclei within chiral EFT 45m
        Speaker: Maria Piarulli (--None--)
      • 09:45
        Chiral EFT for low-energy symmetry tests 45m
        Speaker: Bira van Kolck
    • 10:30 11:15
      Coffee break
    • 11:15 12:00
      Morning 2 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 11:15
        Nuclear matrix elements with advanced shell model methods 45m
        Speaker: Takaharu Otsuka
    • 12:15 13:30
      Lunch
    • 13:45 15:15
      Afternoon Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 15:15 15:45
      Coffee break
    • 16:00 17:00
      Discussion Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 09:00 10:30
      Morning 1 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 09:00
        Towards double-beta decay matrix elements with nuclear reactions 45m
        Speaker: Manuela Cavallaro
      • 09:45
        Renormalization of the 0nbb operator in the shell model 45m
        Speaker: Luigi Coraggio
    • 10:30 11:15
      Coffee break
    • 11:15 12:00
      Morning 2 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 12:15 13:30
      Lunch
    • 13:45 15:15
      Afternoon Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 13:45
        Effective Field Theory for 0nbb 45m
        Speaker: Wouter Dekens (UCSD)
      • 14:30
        Non-Standard 0vbb Mechanisms as a Probe of BSM Physics. 45m
        Speaker: Lukas Graf
    • 15:15 16:00
      Coffee break
    • 16:00 16:45
      afternoon 2 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 16:45 17:30
      Discussion Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
    • 09:00 10:30
      Morning 2 Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 09:00
        Short-range three-nucleon interactions 45m
        Speaker: Luca Girlanda
      • 09:45
        Lepton number violation at the LHC 45m
        Speaker: Ann-Kathrin Perrevoort
    • 10:30 11:00
      Coffee break
    • 11:00 12:00
      Afternoon Meeting room

      Meeting room

      ECT*

      Strada delle Tabarelle, 286 38123 - Villazzano (TN) Italy
      • 11:00
        Matrix elements for non standard double beta mechanisms from lattice QCD 45m
        Speakers: Henry Monge Camacho (UNC at Chapel Hill), Henry Monge-Camacho
      • 11:45
        Closing 15m
    • 12:15 13:30
      Lunch
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