12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > A measurement of the tau(-) -> mu(-) (nu)over-b...
View graph of relations

« Back

A measurement of the tau(-) -> mu(-) (nu)over-bar(mu)nu(tau) branching ratio

Research output: Contribution to journalJournal article

Published

  • G Abbiendi
  • C Ainsley
  • P F Akesson
  • G Alexander
  • J Allison
  • P Amaral
  • G Anagnostou
  • K J Anderson
  • S Arcelli
  • S Asai
  • D Axen
  • G Azuelos
  • E Barberio
  • R J Barlow
  • R J Batley
  • P Bechtle
  • T Behnke
  • K W Bell
  • P J Bell
  • G Bella
  • A Bellerive
  • G Benelli
  • S Bethke
  • O Biebel
  • I J Bloodworth
  • O Boeriu
  • P Bock
  • D Bonacorsi
  • M Boutemeur
  • S Braibant
  • L Brigliadori
  • R M Brown
  • K Buesser
  • H J Burckhart
  • S Campana
  • R K Carnegie
  • B Caron
  • A A Carter
  • J R Carter
  • C Y Chang
  • D G Charlton
  • A Csilling
  • M Cuffiani
  • S Dado
  • S Dallison
  • A De Roeck
  • E A De Wolf
  • K Desch
  • B Dienes
  • M Donkers
  • J Dubbert
  • E Duchovni
  • G Duckeck
  • I P Duerdoth
  • E Elfgren
  • E Etzion
  • F Fabbri
  • L Feld
  • P Ferrari
  • F Fiedler
  • I Fleck
  • M Ford
  • A Frey
  • A Furtjes
  • P Gagnon
  • J W Gary
  • G Gaycken
  • C Geich-Gimbel
  • G Giacomelli
  • P Giacomelli
  • M Giunta
  • J Goldberg
  • E Gross
  • J Grunhaus
  • M Gruwe
  • P O Gunther
  • A Gupta
  • C Hajdu
  • M Hamann
  • G G Hanson
  • K Harder
  • A Harel
  • M Harin-Dirac
  • M Hauschild
  • J Hauschildt
  • C M Hawkes
  • R Hawkings
  • R J Hemingway
  • C Hensel
  • G Herten
  • R D Heuer
  • J C Hill
  • K Hoffman
  • R J Homer
  • D Horvath
  • R Howard
  • P Igo-Kemenes
  • K Ishii
  • H Jeremie
  • P Jovanovic
  • T R Junk
  • N Kanaya
  • J Kanzaki
  • G Karapetian
  • D Karlen
  • K Kawagoe
  • T Kawamoto
  • R K Keeler
  • R G Kellogg
  • B W Kennedy
  • D H Kim
  • K Klein
  • A Klier
  • S Kluth
  • T Kobayashi
  • M Kobel
  • S Komamiya
  • T Kramer
  • T Kress
  • P Krieger
  • J von Krogh
  • D Krop
  • K Kruger
  • T Kuhl
  • M Kupper
  • G D Lafferty
  • H Landsman
  • D Lanske
  • J G Layter
  • A Leins
  • D Lellouch
  • J Letts
  • L Levinson
  • J Lillich
  • S L Lloyd
  • F K Loebinger
  • J Lu
  • J Ludwig
  • A Macpherson
  • W Mader
  • S Marcellini
  • T E Marchant
  • A J Martin
  • J P Martin
  • G Masetti
  • T Mashimo
  • P Mattig
  • W J McDonald
  • J McKenna
  • T J McMahon
  • R A McPherson
  • F Meijers
  • P Mendez-Lorenzo
  • W Menges
  • F S Merritt
  • H Mes
  • A Michelini
  • S Mihara
  • G Mikenberg
  • D J Miller
  • S Moed
  • W Mohr
  • T Mori
  • A Mutter
  • K Nagai
  • I Nakamura
  • H A Neal
  • R Nisius
  • S W O'Neale
  • A Oh
  • A Okpara
  • M J Oreglia
  • S Orito
  • C Pahl
  • G Pasztor
  • J R Pater
  • G N Patrick
  • J E Pilcher
  • J Pinfold
  • D E Plane
  • B Poli
  • J Polok
  • O Pooth
  • M Przybycien
  • A Quadt
  • K Rabbertz
  • C Rembser
  • P Renkel
  • H Rick
  • J M Roney
  • S Rosati
  • Y Rozen
  • K Runge
  • K Sachs
  • T Saeki
  • O Sahr
  • E K G Sarkisyan
  • A D Schaile
  • O Schaile
  • P Scharff-Hansen
  • J Schieck
  • T Schorner-Sadenius
  • M Schroder
  • M Schumacher
  • C Schwick
  • W G Scott
  • R Seuster
  • T G Shears
  • B C Shen
  • P Sherwood
  • G Siroli
  • A Skuja
  • A M Smith
  • R Sobie
  • S Soldner-Rembold
  • R Spano
  • A Stahl
  • K Stephens
  • D Strom
  • R Strohmer
  • S Tarem
  • M Tasevsky
  • R J Taylor
  • R Teuscher
  • M A Thomson
  • E Torrence
  • D Toya
  • P Tran
  • T Trefzger
  • A Tricoli
  • I Trigger
  • Z Trocsanyi
  • E Tsur
  • M F Turner-Watson
  • I Ueda
  • B Ujvari
  • B Vachon
  • C F Vollmer
  • P Vannerem
  • M Verzocchi
  • H Voss
  • J Vossebeld
  • D Waller
  • C P Ward
  • D R Ward
  • P M Watkins
  • A T Watson
  • N K Watson
  • P S Wells
  • T Wengler
  • N Wermes
  • D Wetterling
  • G W Wilson
  • J A Wilson
  • G Wolf
  • T R Wyatt
  • S Yamashita
  • D Zer-Zion
  • L Zivkovic
  • OPAL Collaboration
Journal publication date2/01/2003
JournalPhysics Letters B
Journal number1-2
Volume551
Number of pages14
Pages35-48
Original languageEnglish

Abstract

The tau(-) --> mu(-)(nu) over bar (mu)nu(tau) branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of

B (tau(-) --> mu-(nu) over bar (mu)nu(tau))= 0. 1734 +/- 0.0009(stat) +/- 0.0006(syst)

has been used in conjunction with other OPAL measurements to test lepton universality, yielding the coupling constant ratios g(mu)/g(e) = 1.0005 +/- 0.0044 and g(tau)/g(e) = 1.0031 +/- 0.0048, in good agreement with the Standard Model prediction of unity. A value for the Michel parameter eta = 0.004 +/- 0.037 has also been determined and used to find a limit for the mass of the charged Higgs boson, m(H)+/- > 1.28 tan beta, in the Minimal Supersymmetric Standard Model.