Measurement of Quenched Axial Vector Coupling Constant in In-115 Beta Decay and its Impact on Future 0$\nu\beta\beta$ Searches

Not scheduled
20m
Kongresshaus Stadthalle Heidelberg (Heidelberg)

Kongresshaus Stadthalle Heidelberg

Heidelberg

Neckarstaden 24 69117 Heidelberg Germany
Poster 0vbb Poster (not participating in poster prize competition)

Speaker

Mr Alexander Leder (MIT)

Description

0$\nu\beta\beta$ is a nuclear process under investigation by numerous experiments, which if detected would demonstrate that neutrinos are Majorana particles. 0$\nu\beta\beta$ samples a wide range of intermediate forbidden nuclear transitions, which are governed by the quenched axial vector coupling constant ($g_A^{eff}$), the uncertainty of which plays a pivotal role in the uncertainty of the nuclear matrix elements. The recently reexamined role of $g_A^{eff}$ in these transitions has prompted measurements of $g_A^{eff}$ in highly forbidden decays via beta shape investigation with high resolution and low threshold bolometers. In this poster, we present measurements performed on an $LiInSe_{2}$ bolometer, with a 4th order forbidden decay spectrum in In-115. This decay is sensitive to similar nuclear effects as 0$\nu\beta\beta$. We will discuss the obtained results along with possible impacts this study has for future 0$\nu\beta\beta$ measurements.
Session and Location Monday Session, Poster Wall #82 (Auditorium Gallery Left)
Poster included in proceedings: no

Primary author

Co-authors

Prof. Andrea Giuliani (Centre de Sciences Nucleaires et de Sciences de la Matiere (CSNSM)) Dr Fedor Danevich (Centre de Sciences Nucleaires et de Sciences de la Matiere (CSNSM)) Mr Joel Kostensalo (Department of Physics Jyvaskyla) Dr Jonathan Ouellet (MIT) Prof. Jouni Suhonen (Department of Physics Jyvaskyla) Prof. Lindley Winslow (MIT) Dr Poda Denys (Centre de Sciences Nucleaires et de Sciences de la Matiere (CSNSM))

Presentation materials