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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4508
DTSTART:20170414T203000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T042905Z
LAST-MODIFIED:20170410T154147Z
LOCATION:2241 Chamberlin hall
SUMMARY:New Dark Matter Search Results from PICO 60\, Physics Departme
 nt Colloquium\, Carsten Krauss\, University of Alberta
DESCRIPTION:Bubble chambers have long been a tool for discovery in par
 ticle physics. Since the nature of dark matter within the standard mod
 el is still unknown\, a broad search with many target materials and te
 chniques is currently underway. The PICO collaboration\, which formed 
 as the merger of the PICASSO and COUPP collaborations in 2012 is curre
 ntly operating the world’s largest bubble chamber filled with 52kg o
 f superheated octaflouropropane (C3F8). Between November 2016 and Janu
 ary 2017 a blind run with an exposure of 1.5 ton days was taken. This 
 run had no events in the dark matter search area. This allows us to se
 t world leading limits on the interaction between WIMPs and protons. T
 his remarkable progress promises to enable the coming generations of d
 ark matter bubble chambers. These chambers are expected to have an exc
 ellent sensitivity now that confidence has been gained that the backgr
 ounds we observed in previous bubble chambers can be controlled. I wil
 l report on the status of both the PICO 40L experiment\, planned for o
 peration in later 2017 and PICO 500\, proposed for 2017/2019 at SNOLAB
 .
URL:https://www.physics.wisc.edu/events/?id=4508
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