Transcript Upsilon 400 Embedded Series

Upsilon Trigger Efficiency in
pp
Rosi Reed
UC Davis
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
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
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
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
L2 Trigger Efficiency
L2 trigger efficiency in Upsilon 400 embedded series
Upsilon Trigger Efficiency
Summary of efficiency
calculations
Error efficiencies done
assuming gaussian error ->
Needs to be revisted
Conclusions
• Need embedded files for both Au-Au and
pp to continue
• Full presentation to be given next week at
the analysis meeting
Relevant blogs
http://drupal.star.bnl.gov/STAR/blogentry/rjreed/2008/sep/12/upsilon-triggerefficiency-calculation-pp2006-triggers-upsilon400-series
http://drupal.star.bnl.gov/STAR/blogentry/rjreed/2008/sep/10/upsilon-triggerefficiency-calculation-pp2006-triggersacceptance-2
Back Up Slides
Upsilon 400 Embedded Series