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BEGIN:VEVENT
DTSTAMP:20260921T044629Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20120907T180000Z
DTEND:20120907T190000Z
UID:event965@bu.edu
URL:http://physics.bu.edu/internal/events/show/965
SUMMARY:Possibilities for the Fermi-LAT Gamma Ray Lines
DESCRIPTION:Featuring Matthew Reece\, Harvard University\n\nPart of the HET
	 Seminar Series.\n\nAbstract:\nRecent analyses of Fermi-LAT gamma ray data 
	(by Weniger\, Su\, and Finkbeiner) have found some evidence for monoenerget
	ic features ("lines") in the data at about 111 and 129 GeV\, from photons n
	ear the galactic center and\, with less significance\, from other points in
	 the sky not known to correspond to astronomical objects. I will describe w
	hat has been found and discuss some of the particle physics possibilities i
	f the lines are interpreted as arising from dark matter annihilation. In pa
	rticular\, I will point out the possibility that the lines are associated w
	ith a hidden sector that couples to the Standard Model only at the nonrenor
	malizable level\, and explore bounds on the scale suppressing these couplin
	gs. I will also discuss constraints on the case that the new physics is mor
	e strongly coupled\, and in particular the extent to which new charged part
	icles could simultaneously explain the gamma ray lines and modifications to
	 Higgs decay widths.\n \n 
LOCATION:PRB 595\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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