Answer based on context:

The Patriots home opener featured the long-time division rival Jets and their new rookie quarterback Geno Smith. The Patriots struck first with Tom Brady hitting a wide open Aaron Dobson for a  39-yard touchdown pass, his first of the year. Because It rained heavily throughout the game, it resulted in poor offenses from both teams. Brady failed to complete at least 50% of his passes on the day. The lone bright spot on the Patriots offense was Julian Edelman, who caught 13 passes for 78 yards. After leading 13-3 at halftime, the Jets would try to rally with a touchdown, however the Pats' defense made a critical stop as the team improved to 2-0.

How many touchdowns were scored in the first half?
1