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Title: Observation of Hadronic {ital W} Decays in {ital t}{bar {ital t}} Events with the Collider Detector at Fermilab

Journal Article · · Physical Review Letters
OSTI ID:656289
; ; ; ; ;  [1]; ; ; ; ;  [2]; ; ; ; ;  [3]; ; ;  [4]; more »; ; ; ; ; ;  [5]; ; ; ; ; ;  [6]; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [7]; ; ; ;  [8]; ; ; ; ; ; ; ;  [9]; ; ;  [10]; ; ; ; ; ; « less
  1. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna (Italy)
  3. Brandeis University, Waltham, Massachusetts 02254 (United States)
  4. University of California at Los Angeles, Los Angeles, California 90024 (United States)
  5. University of Chicago, Chicago, Illinois 60637 (United States)
  6. Duke University, Durham, North Carolina 27708 (United States)
  7. Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
  8. University of Florida, Gainesville, Florida 32611 (United States)
  9. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)
  10. University of Geneva, CH-1211 Geneva 4 (Switzerland)
+ Show Author Affiliations

We observe hadronic W decays in t{bar t}{r_arrow}W({r_arrow} {ell}{nu})+{ge}4 jet events using a 109 pb{sup {minus}1} data sample of p{ovr p} collisions at {radical}(s)=1.8 TeV collected with the Collider Detector at Fermilab. A peak in the dijet invariant mass distribution is obtained that is consistent with W decay and inconsistent with the background prediction by 3.3{sigma} . From this peak we measure the W mass to be 77.2{plus_minus}4.6(stat+syst) GeV/c{sup 2} . This result demonstrates the presence of a second W boson in t{bar t} candidates in the W({r_arrow}{ell}{nu})+{ge}4 jet channel. {copyright} {ital 1998} {ital The American Physical Society}

OSTI ID:
656289
Journal Information:
Physical Review Letters, Vol. 80, Issue 26; Other Information: PBD: Jun 1998
Country of Publication:
United States
Language:
English

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Related Subjects

66 PHYSICS
PROTON-PROTON INTERACTIONS
QUARKS
W PLUS BOSONS
W MINUS BOSONS
TOPONIUM
WEAK HADRONIC DECAY
PROTON-ANTIPROTON INTERACTIONS
FERMILAB TEVATRON
MASS DISTRIBUTION
JETS
TEV RANGE