Measurement of the B{sub S}{sup 0} meson lifetime using semileptonic decays
Journal Article
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· Physical Review, D
OSTI ID:328536
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- Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna (Italy)
- Brandeis University, Waltham, Massachusetts 02254 (United States)
- University of California at Los Angeles, Los Angeles, California 90024 (United States)
- University of Chicago, Chicago, Illinois 60637 (United States)
- Duke University, Durham, North Carolina 27708 (United States)
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)
- University of Florida, Gainesville, Florida 32611 (United States)
- Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati (Italy)
- University of Geneva, CH-1211 Geneva 4 (Switzerland)
The lifetime of the B{sub S}{sup 0} meson is measured using the semileptonic decay B{sub S}{sup 0}{r_arrow}D{sub S}{sup {minus}}l{sup +}{nu}X. The data sample consists of about 110 pb{sup {minus}1} of p{bar p} collisions at {radical} (s) =1.8 TeV collected by the CDF detector at Fermilab. Four different D{sub S}{sup {minus}} decay modes are reconstructed resulting in approximately 600 D{sub S}{sup {minus}}l{sup +} signal events. The B{sub S}{sup 0} meson lifetime is determined to be {tau}(B{sub S}{sup 0})=(1.36{plus_minus}0.09{sub {minus}0.05}{sup +0.06}) ps, where the first and second uncertainties are statistical and systematic, respectively. The B{sub S}{sup 0} meson decay length distribution is examined for a lifetime difference {Delta}{Gamma}/{Gamma} between the two mass eigenstates of the B{sub S}{sup 0} meson. An upper limit of {Delta}{Gamma}/{Gamma}{lt}0.83 is set at the 95{percent} confidence level. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 328536
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 59; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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