BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//RLASKEY//CALENDEROUS//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260914T102516Z
LAST-MODIFIED:20160405T194036Z
DTSTART:20160209T203000Z
DTEND:20160209T213000Z
UID:event1527@bu.edu
URL:http://physics.bu.edu/internal/events/show/1527
SUMMARY:The Proton Remains Puzzling
DESCRIPTION:Featuring Haiyan Gao\, Duke University and Duke Kunshan Univers
	ity\nHosted by: Lee Roberts\nPoster: http://physics.bu.edu/internal//files/
	get/020916Gao.pdf\n\nPart of the Physics Department Colloquia Series.\n\nNu
	cleons are building blocks of visible matter\, and are responsible for more
	 than 99% of the visible mass in the universe. While major progress has bee
	n made in the last two decades in understanding the proton spin puzzle disc
	overed in the late 1980s by the European Muon Collaboration\, a new proton 
	puzzle developed in the last several years concerning the proton charge rad
	ius\, which is the charge weighted size of the proton. The ultrahigh precis
	e value of the proton charge radius determined from muonic hydrogen Lamb sh
	ift measurements is about 7 sigma smaller than the values determined from e
	lectron-proton scattering experiments and CODATA value of the hydrogen Lamb
	 shift measurements. In this talk I will review the latest situation concer
	ning the proton charge radius and discuss upcoming new experiments addressi
	ng this puzzle.
LOCATION:SCI 109\, 590 Commonwealth Avenue\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR