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Title: 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:
 [1]
  1. 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}
}

Thesis/Dissertation:
Other availability
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