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Title: Measurement of B hadron lifetimes using J/{psi} final states at CDF

The average bottom-hadron and individual B{sup +}, B{sup 0}, and B{sub s}{sup 0} meson lifetimes have been determined using decays with a J/{psi}{r_arrow}{mu}{sup +}{mu}{sup {minus}} in the final state. The data sample consists of 110 pb{sup {minus}1} of {bar p}p collisions at {radical} (s) =1.8 TeV collected by the CDF detector at the Fermilab Tevatron collider during 1992{endash}1995. For the average lifetime of B hadrons decaying into J/{psi}+X, we obtain {l_angle}{tau}{sub b}{r_angle}=1.533{plus_minus}0.015(stat){sub {minus}0.031}{sup +0.035}(syst)ps. For the B{sup +} and B{sup 0} meson lifetimes, we determine {tau}(B{sup +})=1.68{plus_minus}0.07(stat){plus_minus}0.02(syst)ps, {tau}(B{sup 0})=1.58{plus_minus}0.09(stat){plus_minus}0.02(syst)ps, and {tau}(B{sup +})/{tau}(B{sup 0})=1.06{plus_minus}0.07(stat){plus_minus}0.02(syst). For the B{sub s}{sup 0} meson lifetime, we find {tau}(B{sub s}{sup 0})=1.34{sub {minus}0.19}{sup +0.23}(stat){plus_minus}0.05(syst) ps. {copyright} {ital 1998} {ital The American Physical Society}
Authors:
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  1. Argonne National Laboratory, Argonne, Illinois60439 (United States)
  2. Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127Bologna (Italy)
  3. Brandeis University, Waltham, Massachusetts02254 (United States)
  4. University of California at Los Angeles, Los Angeles, California90024 (United States)
  5. University of Chicago, Chicago, Illinois 60637 (United States)
  6. Duke University, Durham, North Carolina27708 (United States)
  7. Fermi National Accelerator Laboratory, Batavia, Illinois60510 (United States)
  8. University of Florida, Gainesville, Florida32611 (United States)
  9. Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044Frascati (Italy)
  10. University of Geneva, CH-1211Geneva 4 (Switzerland)
Publication Date:
OSTI Identifier:
627850
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review, D; Journal Volume: 57; Journal Issue: 9; Other Information: PBD: May 1998
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; STRANGE PARTICLES; FERMILAB COLLIDER DETECTOR; B MESONS; LIFETIME; J PSI-3097 MESONS; WEAK HADRONIC DECAY; B PLUS MESONS; B NEUTRAL MESONS