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Study of gluon versus quark fragmentation in {Upsilon}{r_arrow}gg{gamma} and e{sup +}e{sup {minus}}{r_arrow}q{bar q}{gamma} events at {radical}(s)=10 GeV

Journal Article · · Physical Review, D
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  1. State University of New York at Albany, Albany, New York 12222 (United States)
  2. Ohio State University, Columbus, Ohio 43210 (United States)
  3. University of Oklahoma, Norman, Oklahoma 73019 (United States)
  4. Purdue University, West Lafayette, Indiana 47907 (United States)
  5. University of Rochester, Rochester, New York 14627 (United States)
  6. Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (United States)
  7. Southern Methodist University, Dallas, Texas 75275 (United States)
  8. Syracuse University, Syracuse, New York 13244 (United States)
  9. Vanderbilt University, Nashville, Tennessee 37235 (United States)
  10. Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (United States)
  11. Wayne State University, Detroit, Michigan 48202 (United States)
+ Show Author Affiliations

Using data collected with the CLEO II detector at the Cornell Electron Storage Ring, we determine the ratio R{sub chrg} for the mean charged multiplicity observed in {Upsilon}(1S){r_arrow}gg{gamma} events, {l_angle}n{sub gluon}{sup {plus_minus}}{r_angle}, to the mean charged multiplicity observed in e{sup +}e{sup {minus}}{r_arrow}q{bar q}{gamma} events, {l_angle}n{sub quark}{sup {plus_minus}}{r_angle}. We find R{sub chrg}{equivalent_to}{l_angle}n{sub gluon}{sup {plus_minus}}{r_angle}/{l_angle}n{sub quark}{sup {plus_minus}}{r_angle}=1.04 {plus_minus}0.02(stat){plus_minus}0.05(syst) for jet-jet masses less than 7 GeV. {copyright} {ital 1997} {ital The American Physical Society}

OSTI ID:
628691
Journal Information:
Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
ELECTRON-POSITRON INTERACTIONS
FRAGMENTATION
GAMMA DECAY
GLUONS
JETS
MASS
MULTIPLICITY
PHOTONS
QUARKS
STORAGE RINGS
UPSILON-9460 MESONS