Ba{anti B}ar status report on the design of a detector for the study of CP violation at PEP-II at SLAC

Technical Report · Tue Jun 01 00:00:00 EDT 1993

DOI:https://doi.org/10.2172/10194023· OSTI ID:10194023

Experiments designed to measure CP-violating asymmetries in the B meson system must emphasize exclusive state reconstruction with the highest possible resolution and efficiency. In the case of B{sup 0} mesons produced in pairs at the {Upsilon}(4S) resonance at an asymmetric e{sup +}e{sup {minus}} storage ring, this capability must be accompanied by precise vertex reconstruction in the direction of the e{sup +}e{sup {minus}} beams (henceforth the z direction). These are difficult requirements, beyond the scope of any existing storage ring detector. The challenge of designing an asymmetric storage ring capable of producing the large number of neutral B meson pairs required to measure CP-violating asymmetries in decays to CP eigenstates has been handsomely met in the PEP-II design. As the first asymmetric e{sup +}e{sup {minus}} storage ring, PEP-II presents a novel set of experimental challenges to a 4{pi} detector. This Status Report describes the design of a new detector fully capable of exploiting the physics opportunities provided by PEP-II.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); California Univ., San Diego, La Jolla, CA (United States); California Univ., Santa Cruz, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515; FG03-92ER40701; AC03-76SF00098; FG03-92ER40718; FG03-92ER40689
• OSTI ID: 10194023
• Report Number(s): SLAC-419; ON: DE94002930; CNN: W-7405-ENG-48; TRN: 93:025756
• Resource Relation: Other Information: PBD: Jun 1993
• Country of Publication: United States
• Language: English

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43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
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RADIATION DETECTORS
DESIGN
RADIATION DETECTION
UPSILON-10575 MESONS
ELECTRON-POSITRON INTERACTIONS
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EXPERIMENTAL FACILITIES AND EQUIPMENT
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