Tran - DESY Theory workshop 2008
Tran - DESY Theory workshop 2008
Tran - DESY Theory workshop 2008
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The Positron Fraction<br />
The coincidence of parameters is very intriguing...<br />
The anomalies in gamma-rays and positrons are related in this<br />
model – interpreting one of them in terms of decaying gravitinos<br />
“predicts” the existence of the other<br />
HEAT 94/95/00<br />
AMS-01 98<br />
CAPRICE 94<br />
MASS 91<br />
0.1<br />
Positron fraction e + /(e + + e − )<br />
M2<br />
Background only<br />
E 2 dJ/dE [GeV cm -2 s -1 sr -1 ]<br />
10 -6<br />
10 -7<br />
0.1 1 10 100<br />
M1, MED<br />
0.01<br />
1 10 100 1000<br />
T [GeV]<br />
E [GeV]<br />
David <strong>Tran</strong><br />
Indirect Signatures of Gravitino Dark Matter with Broken R-Parity
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