Published September 2007 | Version v1
Journal article Metadata-only

Improvement on hadronic event selection in R measurement

Creators

  • 1. Chinese Academy of Sciences, Beijing (China). Inst. of High Energy Physics
  • 2. Jinan Univ., Jinan (China). Inst. of Science
  • 3. Guangxi Normal Univ., Guilin (China). College of Physics and Electronic Engineering
  • 4. Tsinghua Univ., Beijing (China). Dept. of Enginering Physics

Description

Hadronic event selection and hadronic detection efficiency are two main sources of systematic error for the R measurement at BES/BEPC. If only the hadronic events with 2-prong and higher prong are selected as done in the previous measurements, the lost events with 0-prong and 1-prong will cause the systematic error for both of the number of hadronic events and the detection efficiency. This paper aims to present a new method to select the 1-prong hadronic events. It will be helpful to tune the parameters in hadronic events generator LUARLW more reasonably, and decrease the systematic errors of hadronic efficiency in R measurement. (authors)

Additional details

Publishing Information

Journal Title
High Energy Physics and Nuclear Physics
Journal Volume
31
Journal Issue
9
Journal Page Range
p. 802-809
ISSN
0254-3052

INIS

Country of Publication
China
Country of Input or Organization
China
INIS RN
39118396
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
BEIJING ELECTRON-POSITRON COLLIDER; CROSS SECTIONS; EFFICIENCY; ELECTRON-POSITRON INTERACTIONS; ERRORS; HADRONS; MAGNETIC SPECTROMETERS; MEASURING METHODS; MODIFICATIONS; PARTICLE PRODUCTION
Descriptors DEC
ACCELERATORS; ELEMENTARY PARTICLES; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LINEAR ACCELERATORS; MEASURING INSTRUMENTS; PARTICLE INTERACTIONS; SPECTROMETERS; STORAGE RINGS

Optional Information

Notes
10 figs., 2 tabs., 8 refs.