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A precise measurement of the B+, B-0 and mean b-hadron lifetime with the DELPHI detector at LEP I

Abdallah, J ; Abreu, P ; Adam, W ; Adzic, P ; Albrecht, T ; Alderweireld, T ; Alemany-Fernandez, R ; Allmendinger, T ; Allport, P and Amaldi, U , et al. (2004) In European Physical Journal C. Particles and Fields 33(3). p.307-324
Abstract
Final results from the DELPHI Collaboration on the lifetime of B+ and B-0 mesons and the mean b-hadron lifetime, are presented using the data collected at the Z(0) peak in 1994 and 1995. Elaborate, inclusive, secondary vertexing methods have been employed to ensure a b-hadron reconstruction with good efficiency. To separate samples of B+ and B-0 mesons, high performance neural network techniques are used that achieve very high purity signals. The results obtained are: tau(B+) = 1.624+/-0.014 (stat)+/-0.018 (syst) ps tau(B)0 = 1.531+/-0.021 (stat)+/-0.031 (syst) ps tau(B+)/tau(B)0 = 1.060+/-0.021 (stat)+/-0.024 (syst) and for the average b-hadron lifetime: taub/tau(B)0 = 1.570+/-0.005 (stat)+/-0.008 (syst) ps.
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Physical Journal C. Particles and Fields
volume
33
issue
3
pages
307 - 324
publisher
Springer
external identifiers
  • wos:000220846500001
  • scopus:2442482748
ISSN
1434-6044
DOI
10.1140/epjc/s2004-01599-5
language
English
LU publication?
yes
id
cbd5abe8-f5fe-4b10-b5cf-189114ad31c9 (old id 281297)
date added to LUP
2016-04-01 16:34:52
date last changed
2023-01-05 00:44:06
@article{cbd5abe8-f5fe-4b10-b5cf-189114ad31c9,
  abstract     = {{Final results from the DELPHI Collaboration on the lifetime of B+ and B-0 mesons and the mean b-hadron lifetime, are presented using the data collected at the Z(0) peak in 1994 and 1995. Elaborate, inclusive, secondary vertexing methods have been employed to ensure a b-hadron reconstruction with good efficiency. To separate samples of B+ and B-0 mesons, high performance neural network techniques are used that achieve very high purity signals. The results obtained are: tau(B+) = 1.624+/-0.014 (stat)+/-0.018 (syst) ps tau(B)0 = 1.531+/-0.021 (stat)+/-0.031 (syst) ps tau(B+)/tau(B)0 = 1.060+/-0.021 (stat)+/-0.024 (syst) and for the average b-hadron lifetime: taub/tau(B)0 = 1.570+/-0.005 (stat)+/-0.008 (syst) ps.}},
  author       = {{Abdallah, J and Abreu, P and Adam, W and Adzic, P and Albrecht, T and Alderweireld, T and Alemany-Fernandez, R and Allmendinger, T and Allport, P and Amaldi, U and Amapane, N and Amato, S and Anashkin, E and Andreazza, A and Andringa, S and Anjos, N and Antilogus, P and Apel, WD and Arnoud, Y and Ask, Stefan and Asman, B and Augustin, E and Augustinus, A and Baillon, P and Ballestrero, A and Bambade, P and Barbier, R and Bardin, D and Barker, GJ and Baroncelli, A and Battaglia, M and Baubillier, M and Becks, KH and Begalli, M and Behrmann, A and Ben-Haim, E and Benekos, N and Benvenuti, A and Berat, C and Berggren, M and Berntzon, L and Bertrand, D and Besancon, M and Besson, N and Bloch, D and Blom, M and Bluj, M and Bonesini, M and Boonekamp, M and Booth, L and Borisov, G and Botner, O and Bouquet, B and Bowcock, V and Boyko, I and Bracko, M and Brenner, R and Brodet, E and Bruckman, P and Brunet, M and Bugge, L and Buschmann, P and Calvi, M and Camporesi, T and 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  issn         = {{1434-6044}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{307--324}},
  publisher    = {{Springer}},
  series       = {{European Physical Journal C. Particles and Fields}},
  title        = {{A precise measurement of the B+, B-0 and mean b-hadron lifetime with the DELPHI detector at LEP I}},
  url          = {{http://dx.doi.org/10.1140/epjc/s2004-01599-5}},
  doi          = {{10.1140/epjc/s2004-01599-5}},
  volume       = {{33}},
  year         = {{2004}},
}