Can double Gamow-Teller transitions calibrate the matrix elements? · revision history

Revision 2

Accepted · core change · record

Changes against revision 1:

Title
Can double Gamow-Teller transitions calibrate the matrix elements?
Plain
A related measurable process, the double Gamow-Teller transition (flipping the spin and charge of two nucleons), correlates strongly with the neutrinoless matrix element in calculations. If the correlation holds in all models, measuring it would calibrate the matrix elements.
Precise · changed · core
Revision 1: Shell-model calculations show a near-linear correlation between the ground-state double Gamow-Teller matrix element $M^{\mathrm{DGT}}$ and $M^{0\nu}$ (Shimizu, Menendez and Yako, PRL 120, 142502, 2018). Determine whether the correlation holds across many-body methods and with two-body currents, and extract M^{DGT} from heavy-ion double-charge-exchange reactions (NUMEN at LNS Catania, RCNP Osaka). Answer: yes or no for model independence, with calibration slope and uncertainty.
Revision 2: Shell-model calculations show a near-linear correlation between the ground-state double Gamow-Teller matrix element $M^{\mathrm{DGT}}$ and $M^{0\nu}$ (Shimizu, Menendez and Yako, PRL 120, 142502, 2018). Determine whether the correlation holds across many-body methods and with two-body currents, and extract $M^{\mathrm{DGT}}$ from heavy-ion double-charge-exchange reactions (NUMEN at LNS Catania, RCNP Osaka). Answer: yes or no for model independence, with calibration slope and uncertainty.
Settled by
Ab initio and QRPA calculations of $M^{\mathrm{DGT}}$ and $M^{0\nu}$ across ten or more nuclei, plus a reaction-theory-controlled extraction of $M^{\mathrm{DGT}}$ from double-charge-exchange data.
Kind
well-posed
Answer type
yes-no
References
(empty)
Literature status
open
Status note
(empty)
Posed since
2018

Decisions