1 / 4

Trijets in Neutral Current Deep Inelastic Scattering

Trijets in Neutral Current Deep Inelastic Scattering. A Proposal for Studies Using the 1998 -2000 Data. Liang Li University of Wisconsin. 96-97 Data Offline Cuts: Start from Dijets Cuts.

lynley
Download Presentation

Trijets in Neutral Current Deep Inelastic Scattering

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Trijets in Neutral Current Deep Inelastic Scattering A Proposal for Studies Using the 1998 -2000 Data Liang Li University of Wisconsin

  2. 96-97 Data Offline Cuts: Start from Dijets Cuts • Detector Acceptance and EfficiencyyJB > 0.04 positron found with E > 10 GeV vertex cut: -50cm < z < 50 cm positron position cut: |X| > 14 cm or |Y| > 14 cm • • Signal Selection • 38 GeV < E-Pz < 65 GeV A well found track with p > 5 GeV & DCA < 15 cm yEL < 0.95 • Physics and Kinematic Requirement100 GeV2 < Q2 < 10000 GeV2 Three jets found using KTCLUS algorithm || < 2.0 ETLAB > 5 GeV New requirement added to Dijets ET,1BRT > 8 GeV, ET,2BRT > 5 GeV , ET,3BRT > 5 GeV

  3. First Look at DIS Trijets (DA) ReconstructedQ2, x, y by Double Angle method Q2 x Use LO Ariadne for all MC OK agreement between data and Ariadne y Area normalized

  4. Conclusions First glance at DIS Trijets at ZEUS shows reasonable agreement between data & Ariadne LO Ariadne MC used from Dijet Analysis without changes -> a good starting point Plans Calculate cross sections and compare in detail with other QCD calculations and different MC programs (LO & NLO) Add 1998-2000 data for more statistics Explore systematic uncertainties First Look at ZEUS DIS Trijets

More Related