Some New Developments in High Precision Beta Spectroscopy in Measurements of Nuclear Beta Decay
Jeudi 6 août 2015 11:00
- Duree : 1 heure
Lieu : Seminar Room 7/8 - ILL 1, 71 avenue des Martyrs, Grenoble
Orateur : Albert YOUNG (North Carolina State University (NCSU), Raleigh, NC 27695, United States)
Nuclear beta decay continues to play an important role in probing the limits of vailidty of the standard model of particle physics, even in the era of the Large Hadron Collider (LHC). In the past five years it has become evident that constraints on "exotic couplings" with scalar and tensor symmetries (not expected in the standard model of particle physics) are possible from beta decay which can equal or exceed those expected from the LHC. These constraints arise from interference terms between standard model amplitudes and those from the exotic couplings with a characteristic E^-1 dependence on the beta energy. Placing direct limits on these terms has motivated the implementation of new technology for beta spectroscopy in solenoidal magnetic spectrometers, including the development of very thick (2 mm), large area ( 150 mm diameter), highly segmented (127 pixel) Si detectors and the direct detection of the cyclotron radiation from magnetically trapped electrons using technology developed for the Project 8 neutrino mass search. In this talk we review the status and challenges associated with these two approaches and the experiments for which they are planned.
Contact : tellier@ill.fr
Discipline évènement : (Physique)
Entité organisatrice : (ILL)
Nature évènement : (Séminaire)
Evènement répétitif : (General ILL Seminar - College 3)
Site de l'évènement : Polygone scientifique
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