Oxana Smirnova
Senior Lecturer, Deputy Head of division
Measurement of the forward-backward asymmetries of e(+)e(-)-> Z -> b(b)over-bar and e(+)e(-)-> Z -> c(c)over-bar using prompt leptons
Author
- J Abdallah
- P Abreu
- W Adam
- P Adzic
- T Albrecht
- T Alderweireld
- R Alemany-Fernandez
- T Allmendinger
- P Allport
- U Amaldi
- N Amapane
- S Amato
- E Anashkin
- A Andreazza
- S Andringa
- N Anjos
- P Antilogus
- WD Apel
- Y Arnoud
- Stefan Ask
- B Asman
- E Augustin
- A Augustinus
- P Baillon
- A Ballestrero
- P Bambade
- R Barbier
- D Bardin
- G Barker
- A Baroncelli
- M Battaglia
- M Baubillier
- KH Becks
- M Begalli
- A Behrmann
- E Ben-Haim
- N Benekos
- A Benvenuti
- C Berat
- M Berggren
- L Berntzon
- D Bertrand
- M Besancon
- N Besson
- D Bloch
- M Blom
- M Bluj
- M Bonesini
- M Boonekamp
- L Booth
- G Borisov
- O Botner
- B Bouquet
- V Bowcock
- I Boyko
- M Bracko
- R Brenner
- E Brodet
- P Bruckman
- M Brunet
- L Bugge
- P Buschmann
- M Calvi
- T Camporesi
- V Canale
- F Carena
- N Castro
- F Cavallo
- M Chapkin
- P Charpentier
- P Checchia
- R Chierici
- P Chliapnikov
- J Chudoba
- U Chung
- K Cieslik
- P Collins
- R Contri
- G Cosme
- F Cossutti
- J Costa
- D Crennell
- J Cuevas
- J D'Hondt
- J Dalmau
- T da Silva
- W Da Silva
- G Della Ricca
- A De Angelis
- W De Boer
- C De Clercq
- B De Lotto
- N De Maria
- A De Min
- L de Paula
- L Di Ciaccio
- A Di Simone
- K Doroba
- J Drees
- M Dris
- G Eigen
- T Ekelof
- M Ellert
- M Elsing
- CE Santo
- G Fanourakis
- D Fassouliotis
- M Feindt
- J Fernandez
- A Ferrer
- F Ferro
- U Flagmeyer
- H Foeth
- E Fokitis
- F Fulda-Quenzer
- J Fuster
- M Gandelman
- C Garcia
- P Gavillet
- E Gazis
- R Gokieli
- B Golob
- GG Ceballos
- P Goncalves
- E Graziani
- G Grosdidier
- K Grzelak
- J Guy
- C Haag
- A Hallgren
- K Hamacher
- K Hamilton
- S Haug
- F Hauler
- Vincent Hedberg
- M Hennecke
- H Herr
- J Hoffman
- SO Holmgren
- J Holt
- A Houlden
- K Hultqvist
- N Jackson
- Göran Jarlskog
- P Jarry
- D Jeans
- K Johansson
- D Johansson
- P Jonsson
- C Joram
- L Jungermann
- F Kapusta
- S Katsanevas
- E Katsoufis
- G Kernel
- P Kersevan
- U Kerzel
- A Kiiskinen
- T King
- J Kjaer
- P Kluit
- P Kokkinias
- C Kourkoumelis
- O Kouznetsov
- Z Krumstein
- M Kucharczyk
- J Lamsa
- G Leder
- F Ledroit
- L Leinonen
- R Leitner
- J Lemonne
- V Lepeltier
- T Lesiak
- W Liebig
- D Liko
- A Lipniacka
- H Lopes
- M Lopez
- D Loukas
- P Lutz
- L Lyons
- J MacNaughton
- A Malek
- S Maltezos
- F Mandl
- J Marco
- R Marco
- B Marechal
- M Margoni
- JC Marin
- C Mariotti
- A Markou
- C Martinez-Rivero
- J Masik
- N Mastroyiannopoulos
- F Matorras
- C Matteuzzi
- F Mazzucato
- M Mazzucato
- R Mc Nulty
- C Meroni
- E Migliore
- W Mitaroff
- Ulf Mjörnmark
- T Moa
- M Moch
- K Moenig
- R Monge
- J Montenegro
- D Moraes
- S Moreno
- P Morettini
- U Mueller
- K Muenich
- M Mulders
- L Mundim
- W Murray
- B Muryn
- G Myatt
- T Myklebust
- M Nassiakou
- F Navarria
- K Nawrocki
- R Nicolaidou
- M Nikolenko
- A Oblakowska-Mucha
- V Obraztsov
- A Olshevski
- A Onofre
- R Orava
- K Osterberg
- A Ouraou
- A Oyanguren
- M Paganoni
- S Paiano
- P Palacios
- H Palka
- D Papadopoulou
- L Pape
- C Parkes
- F Parodi
- U Parzefall
- A Passeri
- O Passon
- L Peralta
- V Perepelitsa
- A Perrotta
- A Petrolini
- J Piedra
- L Pieri
- F Pierre
- M Pimenta
- E Piotto
- T Podobnik
- V Poireau
- E Pol
- G Polok
- P Poropat
- V Pozdniakov
- N Pukhaeva
- A Pullia
- J Rames
- L Ramler
- A Read
- P Rebecchi
- J Rehn
- D Reid
- R Reinhardt
- P Renton
- F Richard
- J Ridky
- M Rivero
- D Rodriguez
- A Romero
- P Ronchese
- P Roudeau
- T Rovelli
- V Ruhlmann-Kleider
- D Ryabtchikov
- A Sadovsky
- L Salmi
- J Salt
- A Savoy-Navarro
- U Schwickerath
- A Segar
- R Sekulin
- M Siebel
- A Sisakian
- G Smadja
- Oxana Smirnova
- A Sokolov
- A Sopczak
- R Sosnowski
- T Spassov
- M Stanitzki
- A Stocchi
- J Strauss
- B Stugu
- M Szczekowski
- M Szeptycka
- T Szumlak
- T Tabarelli
- C Taffard
- F Tegenfeldt
- J Timmermans
- L Tkatchev
- M Tobin
- S Todorovova
- B Tome
- A Tonazzo
- P Tortosa
- P Travnicek
- D Treille
- G Tristram
- M Trochimczuk
- C Troncon
- ML Turluer
- A Tyapkin
- P Tyapkin
- S Tzamarias
- V Uvarov
- G Valenti
- P Van Dam
- J Van Eldik
- A Van Lysebetten
- N van Remortel
- I Van Vulpen
- G Vegni
- F Veloso
- W Venus
- P Verdier
- V Verzi
- D Vilanova
- L Vitale
- V Vrba
- H Wahlen
- J Washbrook
- C Weiser
- D Wicke
- J Wickens
- G Wilkinson
- M Winter
- M Witek
- O Yushchenko
- A Zalewska
- P Zalewski
- D Zavrtanik
- V Zhuravlov
- I Zimin
- A Zintchenko
- M Zupan
Summary, in English
The forward-backward asymmetries of the processes e(+) e(-) --> Z --> b (b) over bar and e(+)e(-) --> Z --> c (c) over bar were measured from a sample of hadronic Z decays collected by the DELPHI experiment between 1993 and 1995. Enriched samples of b (b) over bar and c (c) over bar events were obtained using lifetime information. The tagging of b and c quarks in these samples was based on the semileptonic decay channels b/c --> X + mu and b/c --> X + e combined with charge flow information from the hemisphere opposite to the lepton. Combining the A(FB)(b (b) over bar) and A(FB)(c (c) over bar) measurements presented in this paper with published results based on 1991 and 1992 DELPHI data samples, the following pole asymmetries were obtained: A(FB)(0,b) = 0.1021 +/- 0.0052 (stat) +/- 0.0024 (syst) A(FB)(0,c) = 0.0728 +/- 0.0086 (stat) +/- 0.0063 (syst) The effective value of the weak mixing angle derived from these measurements is sin(2) theta(W,eff)(lept) = 0.23170 +/- 0.00097.
Department/s
- Particle and nuclear physics
Publishing year
2004
Language
English
Pages
109-125
Publication/Series
European Physical Journal C. Particles and Fields
Volume
34
Issue
2
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Status
Published
ISBN/ISSN/Other
- ISSN: 1434-6044