Refined measurement of the B-hadron lifetime

R. A. Ong,J. A. Jaros,G. S. Abrams,D. Amidei,A. Baden,T. Barklow,A. M. Boyarski,J. Boyer,P. Burchat,D. L. Burke,F. Butler,J. M. Dorfan,G. J. Feldman,G. Gidal,L. Gladney,M. S. Gold,G. Goldhaber,L. Golding,J. Haggerty,G. Hanson,K. Hayes,D. Herrup,R. J. Hollebeek,Walter R. Innes,Juricic I I,J. A. Kadyk,D. Karlen,Klein,A.J. Lankford,R. R. Larsen,B. LeClaire,M. Levi,N. S. Lockyer,Luth,Mark E. Nelson,A. Petersen,B. Richter,K. Riles,P. C. Rowson,T. Schaad,H. Schellman,W. B. Schmidke,P.D. Sheldon,G. H. Trilling,D. Wood,J. M. Yelton

Refined measurement of the B-hadron lifetime

1989

We report a new measurement of the average lifetime of hadrons containing bottom quarks. The B-hadron decays are tagged by identifying leptons at high transverse momentum. From a fit to the lepton impact-parameter distribution, the average B-hadron lifetime is found to be (0.98 0.12 0.13)×10-12 sec. © 1989 The American Physical Society.

Keywords:

Quark
Hadron
Lepton
Meson
Nuclear physics
B meson
Particle physics
Elementary particle
Fermion
Particle decay
Physics

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