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DTSTART;TZID=America/Los_Angeles:20200717T100000
DTEND;TZID=America/Los_Angeles:20200717T110000
DTSTAMP:20260429T112551
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UID:837-1594980000-1594983600@inpa.lbl.gov
SUMMARY:VIRTUAL SEMINAR Special INPA / Research Progress Meeting\, Friday\, July 17\, 2020 – Michelle Galloway (University of Zurich)
DESCRIPTION:Speaker: Michelle Galloway (University of Zurich) \nTitle: Observation of excess electronic recoil events in XENON1T \nAbstract: A search for new physics with XENON1T revealed an excess of electronic recoil events in the (1 – 7) keV region\, favoring signal over background with significances of 3.5 sigma for solar axions/ALPs\, 3.2 sigma for an enhanced neutrino magnetic moment\, and 3.0 sigma global (4.0 local) for bosonic dark matter with a peak at 2.3 +- 0.2 keV (68% C.L.). Additionally\, a previously undetected tritium component\, favoured at 3.2 sigma over known backgrounds\, can neither be confirmed nor excluded. I will provide an overview of the XENON1T detection and analysis methods for this search\, a characterization of the excess events\, and present results for both possible backgrounds and potential new physics. \nJoin Zoom Meeting\nhttps://lbnl.zoom.us/j/98002426771?pwd=R3dtTFhmb0ZyR0ZHV1E5amZCcnFBZz09 \nMeeting ID: 980 0242 6771\nPassword: 531232
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-michelle-galloway-university-of-zurich/
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BEGIN:VEVENT
DTSTART;TZID=America/Los_Angeles:20200717T120000
DTEND;TZID=America/Los_Angeles:20200717T130000
DTSTAMP:20260429T112551
CREATED:20200710T224830Z
LAST-MODIFIED:20200717T165436Z
UID:846-1594987200-1594990800@inpa.lbl.gov
SUMMARY:VIRTUAL INPA SEMINAR – Hao Chen (Texas A&M University)
DESCRIPTION:Speaker: Hao Chen (Texas A&M University) \nTitle: Two New Cryogenic Detector R&D \nAbstract: It is well-accepted that the majority of the matter in the universe is dark and non-baryonic. The nature of dark matter\, however\, remains mysterious. Various proposed candidates span a wide range in the mass and cross section parameter space. Many experimental efforts have been made aiming to detect dark matter particles directly\, part of the region in the parameter space has been excluded from their data. Probing the lower mass region requires a low threshold detection technique. I will talk about two new cryogenic detectors that are currently under development. The magnetic bubble chamber utilizes a single-molecule magnet as the target\, amplifying the signal from a scattering event by magnetic avalanches. The phonon-mediated high-voltage detector combines features of CDMS iZip and HV detector\, provides a possible way to achieve a low threshold without losing the electron recoil/nuclear recoil discrimination. \nCORRECTION Updated meeting ID and password information \nJoin Zoom Meeting https://lbnl.zoom.us/j/96636700595?pwd=bWcvZU9MQmdYdzE1YzNrZXdROElJQT09 \nMeeting ID: 966 3670 0595  \nPassword: 419873
URL:https://inpa.lbl.gov/event/virtual-inpa-seminar-hao-chen-texas-am-university/
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