1. Upsilon Trigger Efficiency in pp Rosi Reed UC Davis

2. Upsilon 400 Embedded Series Left Figure is MC Eta vs Phi distribution for upsilon electron daughters with at least 1 hit in the BEMC Right Figure is MC pT distribution of upsilons

3. Upsilon 400 Embedded Series Left Figure is upsilon MC rapidity distribution for upsilons with both daughters outside of eta<0 and phi < 0 Right Figure is upsilon MC rapidity distribution

4. Acceptance Efficiency Right Figure is acceptance efficiency for electrons with at least one hit in the BEMC from upsilon 600 series. Asymmetric due to showering off endcap. Left Figure is the mid-rapidity efficiency where acceptance is defined as both upsilon daughter leaving at least Emin energy in the BEMC

5. Acceptance Efficiency Acceptance efficiency versus MC upsilon rapidity and pT where the denominator is comprised of all upsilons where the daughters are not located in eta < 0 and rapidity < 0

6. L2 Trigger Efficiency L2 trigger efficiency in Upsilon 400 embedded series

7. Upsilon Trigger Efficiency Summary of efficiency calculations Error efficiencies done assuming gaussian error -> Needs to be revisted

8. Conclusions Need embedded files for both Au-Au and pp to continue Full presentation to be given next week at the analysis meeting

9. Relevant blogs http://drupal.star.bnl.gov/STAR/blog- entry/rjreed/2008/sep/12/upsilon-trigger- efficiency-calculation-pp2006-triggers-upsilon- 400-series http://drupal.star.bnl.gov/STAR/blog- entry/rjreed/2008/sep/10/upsilon-trigger- efficiency-calculation-pp2006-triggers- acceptance-2

10. Back Up Slides

11. Upsilon 400 Embedded Series