<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000000">
<b><font color="#000099">Physics Seminar<br>
Fri., Feb. 19, 2010<br>
11:00AM<br>
CEBAF Center AUD.<br>
Cookies & Coffee 10:45AM<br>
<br>
</font></b><br>
<b><font color="#000099">Neal Weiner Center for Cosmology and Particle
Physics
<br>
New York University
</font></b><br>
<br>
<font color="#cc0000"><b>"Astrophysical Motivations for Dark Forces"
</b></font><br>
<br>
The existence of dark mater has been confirmed by a wide variety of
experiments, on a wide variety of length scales. However, the nature of
the dark matter remains elusive. One intriguing class of candidates -
weakly interacting massive particles or ``WIMPs'' - offer the prospect
of detection in cosmic rays, in direct detection experiments, and at
colliders. Of late, there has been an increasing set of experimental
signals, principally from cosmic rays, which may be providing a first
sign of dark matter. I will explore the range of signals and anomalies,
and the challenges of understanding all of them in terms of dark
matter. Remarkably, dark matter theories with new forces at the GeV
scale seem to provide a natural explanation. Thus, if dark matter is
responsible for these anomalies, it may be pointing us to a much richer
set of physics in the dark sector.<br>
</body>
</html>