Measurement of the Λb polarization in Z decays
The Λb polarization in hadronic Z decays is measured in semileptonic decays from the average energies of the charged lepton and the neutrino. In a data sample of approximately 3 million hadronic Z decays collected by the ALEPH detector at LEP between 1991 and 1994, 462 ± 31 Λb candidates are selecte...
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| Main Authors: | , |
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| Format: | text |
| Language: | English |
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Institutional Knowledge at Singapore Management University
1996
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| Online Access: | https://ink.library.smu.edu.sg/sis_research/5773 https://ink.library.smu.edu.sg/context/sis_research/article/6776/viewcontent/Measurement_of_the__b_polarization_in_Z_decays.pdf |
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| Institution: | Singapore Management University |
| Language: | English |
| Summary: | The Λb polarization in hadronic Z decays is measured in semileptonic decays from the average energies of the charged lepton and the neutrino. In a data sample of approximately 3 million hadronic Z decays collected by the ALEPH detector at LEP between 1991 and 1994, 462 ± 31 Λb candidates are selected using (Λπ+)-lepton correlations. From this event sample, the Λb polarization is measured to be PΛb = −0.23−0.20+0.24(stat.)−0.07+0.08(syst.). |
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