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Title: Precise Measurement of the b -Quark Fragmentation Function in Z{sup 0} Boson Decays

Abstract

We have developed a new technique for inclusive reconstruction of the energy of B hadrons. The excellent efficiency and resolution of this technique allow us to make the most precise determination of the b -quark fragmentation function, using e{sup +}e{sup -}{yields}Z{sup 0} decays recorded in the SLAC Large Detector experiment. We compared our measurement with the predictions of a number of fragmentation models. We excluded several of these models and measured the average scaled energy of weakly decaying B hadrons to be <x{sub B}>=0.714{+-}0.005(stat ){+-}0.007(syst){+-}0.00 2 (model dependence). (c) 2000 The American Physical Society.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5];  [6];  [7]
  1. Nagoya University, Chikusa-ku, Nagoya, 464 Japan (Japan)
  2. Tohoku University, Sendai 980, (Japan)
  3. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
  4. University of Massachusetts, Amherst, Massachusetts 01003 (United States)
  5. Yale University, New Haven, Connecticut 06511 (United States)
  6. University of Wisconsin, Madison, Wisconsin 53706 (United States)
  7. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States) (and others)
Publication Date:
OSTI Identifier:
20216431
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 84; Journal Issue: 19; Other Information: PBD: 8 May 2000; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Z NEUTRAL BOSONS; B QUARKS; ELECTRON-POSITRON INTERACTIONS; B MESONS; HADRONIC PARTICLE DECAY; WEAK PARTICLE DECAY; EXPERIMENTAL DATA

Citation Formats

Abe, Kenji, Abe, Koya, Abe, T., Adam, I., Akimoto, H., Aston, D., Baird, K. G., Baltay, C., Band, H. R., and Barklow, T. L. Precise Measurement of the b -Quark Fragmentation Function in Z{sup 0} Boson Decays. United States: N. p., 2000. Web. doi:10.1103/PhysRevLett.84.4300.
Abe, Kenji, Abe, Koya, Abe, T., Adam, I., Akimoto, H., Aston, D., Baird, K. G., Baltay, C., Band, H. R., & Barklow, T. L. Precise Measurement of the b -Quark Fragmentation Function in Z{sup 0} Boson Decays. United States. doi:10.1103/PhysRevLett.84.4300.
Abe, Kenji, Abe, Koya, Abe, T., Adam, I., Akimoto, H., Aston, D., Baird, K. G., Baltay, C., Band, H. R., and Barklow, T. L. Mon . "Precise Measurement of the b -Quark Fragmentation Function in Z{sup 0} Boson Decays". United States. doi:10.1103/PhysRevLett.84.4300.
@article{osti_20216431,
title = {Precise Measurement of the b -Quark Fragmentation Function in Z{sup 0} Boson Decays},
author = {Abe, Kenji and Abe, Koya and Abe, T. and Adam, I. and Akimoto, H. and Aston, D. and Baird, K. G. and Baltay, C. and Band, H. R. and Barklow, T. L.},
abstractNote = {We have developed a new technique for inclusive reconstruction of the energy of B hadrons. The excellent efficiency and resolution of this technique allow us to make the most precise determination of the b -quark fragmentation function, using e{sup +}e{sup -}{yields}Z{sup 0} decays recorded in the SLAC Large Detector experiment. We compared our measurement with the predictions of a number of fragmentation models. We excluded several of these models and measured the average scaled energy of weakly decaying B hadrons to be <x{sub B}>=0.714{+-}0.005(stat ){+-}0.007(syst){+-}0.00 2 (model dependence). (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevLett.84.4300},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 19,
volume = 84,
place = {United States},
year = {2000},
month = {5}
}