Measurement of direct CP asymmetry in B± → J/ K± decays produced in pp̅ collisions at √s = 1.96TeV

Thompson, Gregory A.

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https://hdl.handle.net/2142/26162 Copy

Description

Title

Measurement of direct CP asymmetry in B± → J/ K± decays produced in pp̅ collisions at √s = 1.96TeV

Author(s)

Thompson, Gregory A.

Issue Date

2011-08-25T22:16:50Z

Director of Research (if dissertation) or Advisor (if thesis)

Pitts, Kevin T.

Doctoral Committee Chair(s)

Liss, Tony M.

Committee Member(s)

• Pitts, Kevin T.
• Gladding, G.E.
• Stack, John D.

Department of Study

Physics

Discipline

Physics

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

• CP Asymmetry
• Collider Detector at Fermilab (CDF)
• CP (charge particle)

Abstract

A measurement of direct CP asymmetry is performed using 6fb−1 of pp̄ collisions at √s = 1.96TeV from the CDF detector at the Fermi National Accelerator Laboratory. Approximately 80,000 B− → J/ K− (and charge conjugate) events were selected on the dimuon trigger and the yields were determined using a simultaneous mass and lifetime fit. After corrections, a measurement of ACP = 0.0034 ± 0.0043(stat.) ± 0.0060(syst.) is obtained, which is consistent with the SM prediction and previous measurements at DØ and the B factories.

Graduation Semester

2011-08

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http://hdl.handle.net/2142/26162

Copyright and License Information

Copyright 2011 Gregory Andrew Thompson

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