Limit on B0s oscillation using a jet charge method

A lower limit is set on the Bs0 meson oscillation parameter Δms using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a reconstructed secondary vertex are used. The high transverse momentum leptons are produced mainly by b hadron decays, and...

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Main Authors: BUSKULIC, D., THULASIDAS, M.
Format: text
Language:English
Published: Institutional Knowledge at Singapore Management University 1995
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Online Access:https://ink.library.smu.edu.sg/sis_research/5836
https://ink.library.smu.edu.sg/context/sis_research/article/6839/viewcontent/Limit_on_B0_s_oscillation_using_a_jet_charge_method.pdf
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spelling sg-smu-ink.sis_research-68392021-03-12T08:24:20Z Limit on B0s oscillation using a jet charge method BUSKULIC, D. THULASIDAS, M. A lower limit is set on the Bs0 meson oscillation parameter Δms using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a reconstructed secondary vertex are used. The high transverse momentum leptons are produced mainly by b hadron decays, and the sign of the lepton indicates the particle/antiparticle final state in decays of neutral B mesons. The initial state is determined by a jet charge technique using both sides of the event. A maximum likelihood method is used to set a lower limit of Δms. The 95% confidence level lower limit on Δms ranges between 5.2 and ̷6.5(h̷c2) ps−1 when the fraction of b quarks from Z0 decays that form Bs0 messons is varied from 8% to 16%. Assuming that the B0s fraction is 12%, the lower limit would be ̷Δms> 6.1(h̷c2) ps−1 at 95% confidence level. For xs = ΔmsτBs, this limit also gives xs > 8.8 using the B0s lifetime of τBs = 1.55 ± 0.11 ps and shifting the central value of τBs down by 1σ. 1995-08-01T07:00:00Z text application/pdf https://ink.library.smu.edu.sg/sis_research/5836 info:doi/10.1016/0370-2693(95)00823-4 https://ink.library.smu.edu.sg/context/sis_research/article/6839/viewcontent/Limit_on_B0_s_oscillation_using_a_jet_charge_method.pdf http://creativecommons.org/licenses/by-nc-nd/4.0/ Research Collection School Of Computing and Information Systems eng Institutional Knowledge at Singapore Management University Computer Sciences Databases and Information Systems
institution Singapore Management University
building SMU Libraries
continent Asia
country Singapore
Singapore
content_provider SMU Libraries
collection InK@SMU
language English
topic Computer Sciences
Databases and Information Systems
spellingShingle Computer Sciences
Databases and Information Systems
BUSKULIC, D.
THULASIDAS, M.
Limit on B0s oscillation using a jet charge method
description A lower limit is set on the Bs0 meson oscillation parameter Δms using data collected from 1991 to 1994 by the ALEPH detector. Events with a high transverse momentum lepton and a reconstructed secondary vertex are used. The high transverse momentum leptons are produced mainly by b hadron decays, and the sign of the lepton indicates the particle/antiparticle final state in decays of neutral B mesons. The initial state is determined by a jet charge technique using both sides of the event. A maximum likelihood method is used to set a lower limit of Δms. The 95% confidence level lower limit on Δms ranges between 5.2 and ̷6.5(h̷c2) ps−1 when the fraction of b quarks from Z0 decays that form Bs0 messons is varied from 8% to 16%. Assuming that the B0s fraction is 12%, the lower limit would be ̷Δms> 6.1(h̷c2) ps−1 at 95% confidence level. For xs = ΔmsτBs, this limit also gives xs > 8.8 using the B0s lifetime of τBs = 1.55 ± 0.11 ps and shifting the central value of τBs down by 1σ.
format text
author BUSKULIC, D.
THULASIDAS, M.
author_facet BUSKULIC, D.
THULASIDAS, M.
author_sort BUSKULIC, D.
title Limit on B0s oscillation using a jet charge method
title_short Limit on B0s oscillation using a jet charge method
title_full Limit on B0s oscillation using a jet charge method
title_fullStr Limit on B0s oscillation using a jet charge method
title_full_unstemmed Limit on B0s oscillation using a jet charge method
title_sort limit on b0s oscillation using a jet charge method
publisher Institutional Knowledge at Singapore Management University
publishDate 1995
url https://ink.library.smu.edu.sg/sis_research/5836
https://ink.library.smu.edu.sg/context/sis_research/article/6839/viewcontent/Limit_on_B0_s_oscillation_using_a_jet_charge_method.pdf
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