Recent STAR BES results - talk for the Zimanyi school

Final version here:

https://drupal.star.bnl.gov/STAR/presentations/zim%C3%A1nyi-school/robert-vertesi-0

older versions:
v1 - for discussion in bulkcorr
v2 - after the comments of Nu and the NPI group
v3 - after Nu's and Gang's comments
v4 - after Frank's comments