Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Measurements of the Average Lifetime of B Hadrons at SLD.
Author: Measurement of the Average Lifeetime of B Hadrons at SLD.
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
The authors present preliminary measurements of the average B hadron lifetime using a sample of 50,000 Z° events collected by SLD at the SLC in 1993. Their first technique uses the impact parameter of tracks in jets opposite tagged b jets. They obtain [tau]{sub B}([delta]) = 1.617 ± 0.048 ± 0.086 ps, and [tau]{sub B}([Sigma][delta]) = 1.627 ± 0.054 ± 0.132 ps from single and summed impact parameter distributions. The second technique uses inclusive vertices reconstructed in three dimensions. From the decay length distribution, they extract [tau]{sub B} = 1.577 ± 0.032 ± 0.046 ps.
A Preliminary Measurement of the Average B Hadron Lifetime
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
The average B hadron lifetime was measured using data collected with the SLD detector at the SLC in 1993. From a sample of -50,000 Z° events, a sample enriched in Z° → b{bar b} was selected by applying an impact parameter tag. The lifetime was extracted from the decay length distribution of inclusive vertices reconstructed in three dimensions. A binned maximum likelihood method yielded an average B hadron lifetime of?{sub B} = 1.577±0.032(stat.)±0.046(syst.) ps.
Scientific and Technical Aerospace Reports
Author: Albuquerque Meeting - Proceedings Of The 8th Meeting Division Of Particles And Fields Of The American Physical Society (In 2 Volumes)
Author: Sally SeidelPublisher: World Scientific
ISBN: 9814549967
Category :
Languages : en
Pages : 2088
Book Description
This book presents the latest results from high energy physics laboratories. The topics discussed include: Cosmology, Heavy Ions, Electroweak, Heavy Flavour Physics and CP Violation/Rare Decays, QCD and Beyond the Standard Model, Planck Scale Physics, Accelerator and Non-Accelerator Physics and Instrumentation.
A Measurement of the Average Lifetime of B Hadrons Using Vertex Reconstruction
Author: David Robert MullerPublisher:
ISBN:
Category : Hadrons
Languages : en
Pages : 486
Book Description
Measurement of the Average Lifetime of B Hadrons
Author: DELPHI.B Physics & Cp Violation '99, 3rd Intl Conf
Author: Wei Shu HouPublisher: World Scientific
ISBN: 9814492663
Category : Science
Languages : en
Pages : 552
Book Description
CP violation was first observed in 1964, but only in 1999 did we gain much greater experimental insight. Direct CP violation finally appeared in the form of ε′/ε in the K system. Indirect CP violation in B → J/Ψ Ks decay, the raison d'être for construction of e+e- B factories, was first sniffed out at the proton-antiproton collider. The asymmetric B factories — BABAR at SLAC and BELLE at KEK — were completed, while the symmetric B factory at Cornell was upgraded to CLEO-III. It seems that everyone is positioning himself for the great competition on “B Physics and CP Violation”, racing to unravel the Kobayashi-Maskawa matrix, especially the size and origin of CP phases. The change of millennium provides a dramatic backdrop.To have intensive discussions at the technical level, to create broader interest in the subject, and to maximize interaction between experimenters and theorists, this book starts with the status of B factories: accelerator, detector and physics analysis. Following an overview of B physics and the CKM matrix, it delves into the details of lifetime, spectroscopy and decays, with even more specialized discussions on rare decays, direct and indirect CP violation, factorization and final state interactions, determination of unitarity phases, etc. Topics on ε′/ε, rare K decay, charm and hyperon systems, and various T, CP and CPT tests are also discussed at length. The book closes with the outlook for hadron machines and the prospects for new physics. A special feature is that there are two summary talks, one on experiment and the other on theory. The book is further augmented by two dozen excellent contributed talks.
Author: TASSO Collaboration
Author: Daniel Edward Klem