BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The low energy electronic recoil excess observed in the XENON1T ex
 periment - Matteo Alfonsi (Johannes Gutenberg University of Mainz)
DTSTART:20200714T150000Z
DTEND:20200714T160000Z
UID:TALK149797@talks.cam.ac.uk
CONTACT:William Fawcett
DESCRIPTION:The XENON1T experiment has recently reported new results from 
 the analysis of low energy electronic recoils data\, characterized by the 
 lowest background rate ever achieved in the energy range between 1 and 30 
 keV. An excess over known background has been observed around 2-3 keV\, an
 d this observation has been interpreted in terms of the existence of solar
  axions\, or as an enhancement of the neutrino magnetic moment observed in
  solar neutrinos\, or an additional background initially not considered. I
 n the latter hypothesis\, among the various possibilities considered such 
 as traces of 127Xe or 37Ar or tritium diluted into the active volume\, onl
 y the tritium hypothesis cannot be confirmed or excluded with the current 
 knowledge of the production and reduction mechanism. In this seminar I wil
 l describe the detector operation\, the analysis approach and the argument
 s that allowed us to arrive to such conclusions\, trying to address also t
 he additional questions that has been posed by the community
LOCATION:Ryle Seminar Room (Rutherford 930) 
END:VEVENT
END:VCALENDAR