NL50 - AA on a paired flop

[Cosmo26]

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $50.00
<font color="black">Hero (BB): $49.50</font>
UTG: $50.00
MP: $19.80
CO: $16.20
BTN: $34.00

<font color="black">Preflop:</font> Hero is dealt A[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/diamond.gif[/img] (6 Players)
4 folds, <font color="red">SB raises to $1.00</font>, <font color="red">Hero raises to $6.75</font>, SB calls $5.75

<font color="black">Flop:</font> ($13.50) J[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">SB bets all-in for $43.25</font>, Hero calls all-in for $42.75
Uncalled bet of $0.50 returned to SB

<font color="black">Turn:</font> ($99) 5[img]/images/graemlins/club.gif[/img] (2 Players - 2 All-In)

<font color="black">River:</font> ($99) 8[img]/images/graemlins/diamond.gif[/img] (2 Players - 2 All-In)

Pot Size: $99.00 ($3 Rake)

Results in white below:
<font color="white">
SB had Ks Ac (two pair, Kings and Jacks) and LOST (-$49.50)
Hero had A A (two pair, Aces and Jacks) and WON (+$46.50) </font>

New to the table so no reads.
Not so sure about my call here. My thoughts were, it is more likely he is holding a hand like AK/KQs then flopping trips and he thinks he has me beat. Standard call?