[Hps] No HPS meeting this week

[Jaros, John A.]

Dear HPS,

Many of us already met extensively this week at the Trident Summit, which made lots of progress.
Accordingly, we will cancel the regular weekly meeting, but plan to resume next week.

If you weren't able to join the meeting, check out the talks here:
https://confluence.slac.stanford.edu/display/hpsg/Trident+Summit%3A++July+25-26%2C+2017
We've confirmed that WABs generate a significant background to the tridents and skew the Esum
distribution. We established that we have current dependent normalized trident rates, but don't yet know why.
A comparison between Madgraph 4 and Madgraph 5 and Luca's simulation shows there's work to do
to nail down the trident simulation predictions.

Thanks to Matt and Nathan for organizing the workshop. 

John