Measurement of the B± lifetime and top quark identification using secondary vertex b-tagging (in Spanish)
Abstract
This dissertation presents a preliminary measurement of the B± lifetime through the full reconstruction of its decay chain, and the identification of top quark production in the electron plus jets channel using the displaced vertex b-tagging method. Its main contribution is the development, implementation and optimization of the Kalman filter algorithm for vertex reconstruction, and of the displaced vertex technique for tagging jets arising from b quark fragmentation, both of which have now become part of the standard D0 reconstruction package. These two algorithms fully exploit the new state-of-the-art tracking detectors, recently installed as part of the Run 2 D0 upgrade project. The analysis is based on data collected during Run 2a at the Fermilab Tevatron p$$\bar{p}$$ Hadron Collider up to April 2003, corresponding to an integrated luminosity of 60 pb-1. The measured B meson lifetime of τ = 1.57 ± 0.18 ps is in agreement with the current world average, with a competitive level of precision expected when the full data sample becomes available.
- Authors:
-
- Univ. of Buenos Aires (Argentina)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 15017346
- Report Number(s):
- FERMILAB-THESIS-2004-21
TRN: US0605238
- DOE Contract Number:
- AC02-76CH03000
- Resource Type:
- Thesis/Dissertation
- Country of Publication:
- United States
- Language:
- Spanish
- Subject:
- 43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; ALGORITHMS; B MESONS; B QUARKS; DECAY; ELECTRONS; FERMILAB TEVATRON; FRAGMENTATION; HADRONS; IMPLEMENTATION; LIFETIME; LUMINOSITY; OPTIMIZATION; PRODUCTION; T QUARKS; Experiment-HEP
Citation Formats
Schwartzman, Ariel G. Measurement of the B± lifetime and top quark identification using secondary vertex b-tagging. United States: N. p., 2004.
Web. doi:10.2172/15017346.
Schwartzman, Ariel G. Measurement of the B± lifetime and top quark identification using secondary vertex b-tagging. United States. https://doi.org/10.2172/15017346
Schwartzman, Ariel G. 2004.
"Measurement of the B± lifetime and top quark identification using secondary vertex b-tagging". United States. https://doi.org/10.2172/15017346. https://www.osti.gov/servlets/purl/15017346.
@article{osti_15017346,
title = {Measurement of the B± lifetime and top quark identification using secondary vertex b-tagging},
author = {Schwartzman, Ariel G.},
abstractNote = {This dissertation presents a preliminary measurement of the B± lifetime through the full reconstruction of its decay chain, and the identification of top quark production in the electron plus jets channel using the displaced vertex b-tagging method. Its main contribution is the development, implementation and optimization of the Kalman filter algorithm for vertex reconstruction, and of the displaced vertex technique for tagging jets arising from b quark fragmentation, both of which have now become part of the standard D0 reconstruction package. These two algorithms fully exploit the new state-of-the-art tracking detectors, recently installed as part of the Run 2 D0 upgrade project. The analysis is based on data collected during Run 2a at the Fermilab Tevatron p$\bar{p}$ Hadron Collider up to April 2003, corresponding to an integrated luminosity of 60 pb-1. The measured B meson lifetime of τ = 1.57 ± 0.18 ps is in agreement with the current world average, with a competitive level of precision expected when the full data sample becomes available.},
doi = {10.2172/15017346},
url = {https://www.osti.gov/biblio/15017346},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2004},
month = {Thu Jan 01 00:00:00 EST 2004}
}