BibTex format
@article{Akers:1996,
author = {Akers, R and Alexander, G and Allison, J and Altekamp, N and Ametewee, K and Anderson, KJ and Anderson, S and Arcelli, S and Asai, S and Axen, D and Azuelos, G and Ball, AH and Barberio, E and Barlow, RJ and Bartoldus, R and Batley, JR and Beaudoin, G and Bechtluft, J and Beck, A and Beck, GA and Beeston, C and Behnke, T and Bell, KW and Bella, G and Bentvelsen, S and Berlich, P and Bethke, S and Biebel, O and Bloodworth, IJ and Bock, P and Bosch, HM and Boutemeur, M and Braibant, S and Bright-Thomas, P and Brown, RM and Buijs, A and Burckhart, HJ and Burgard, C and Bürgin, R and Capiluppi, P and Carnegie, RK and Carter, AA and Carter, JR and Chang, CY and Charlesworth, C and Charlton, DG and Chu, SL and Clarke, PEL and Clayton, JC and Clowes, SG and Cohen, I and Conboy, JE and Cooke, OC and Cuffiani, M and Dado, S and Dallapiccola, C and Dallavalle, GM and Darling, C and De, Jong S and Del, Pozo LA and Deng, H and Dixit, MS and Do, Couto E Silva E and Duboscq, JE and Duchovni, E and D},
journal = {Zeitschrift Fur Physik C Particles and Fields},
pages = {195--214},
title = {Measurement of the average b-baryon lifetime and the product branching ratio f(b → Λb) · BR(Λb → Λ-νX)},
volume = {69},
year = {1996}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - The average lifetime of b-flavoured baryons measured with the OPAL detector is updated to include data collected between 1990 and 1994 at LEP. Bottom-flavoured baryons that decay semileptonically and produce a Λ baryon are identified through the correlation of the baryon number of the Λ and the electric charge of the lepton. To measure the lifetime, the decay point of the b baryon is estimated by the Λ-lepton vertex, and the observed distribution of decay lengths is fitted simultaneously in 874 right-sign and 384 wrong-sign combinations. In a separate method, the impact parameter distribution of the leptons is fitted in a subset of these data. When the two results are combined, taking correlations into account, the average b-baryon lifetime is found to be τ = 1.16 ± 0.11 (stat.) ± 0.06 (syst.) ps. Using the same data, the product branching ratio is measured to be f(b → Δ<inf>b</inf>)·BR(Λ<inf>b</inf> → Λ-νX) = (2.91 ± 0.23 (stat.) ±0.25 (syst.))·10<sup>-3</sup>, where the symbol f(b → Λ<inf>b</inf>) is the fraction of b quarks from Z<sup>0</sup> decays forming b baryons, Λ<inf>b</inf> represents all b-flavoured baryons and is either an electron or a muon. © Springer-Verlag 1996.
AU - Akers,R
AU - Alexander,G
AU - Allison,J
AU - Altekamp,N
AU - Ametewee,K
AU - Anderson,KJ
AU - Anderson,S
AU - Arcelli,S
AU - Asai,S
AU - Axen,D
AU - Azuelos,G
AU - Ball,AH
AU - Barberio,E
AU - Barlow,RJ
AU - Bartoldus,R
AU - Batley,JR
AU - Beaudoin,G
AU - Bechtluft,J
AU - Beck,A
AU - Beck,GA
AU - Beeston,C
AU - Behnke,T
AU - Bell,KW
AU - Bella,G
AU - Bentvelsen,S
AU - Berlich,P
AU - Bethke,S
AU - Biebel,O
AU - Bloodworth,IJ
AU - Bock,P
AU - Bosch,HM
AU - Boutemeur,M
AU - Braibant,S
AU - Bright-Thomas,P
AU - Brown,RM
AU - Buijs,A
AU - Burckhart,HJ
AU - Burgard,C
AU - Bürgin,R
AU - Capiluppi,P
AU - Carnegie,RK
AU - Carter,AA
AU - Carter,JR
AU - Chang,CY
AU - Charlesworth,C
AU - Charlton,DG
AU - Chu,SL
AU - Clarke,PEL
AU - Clayton,JC
AU - Clowes,SG
AU - Cohen,I
AU - Conboy,JE
AU - Cooke,OC
AU - Cuffiani,M
AU - Dado,S
AU - Dallapiccola,C
AU - Dallavalle,GM
AU - Darling,C
AU - De,Jong S
AU - Del,Pozo LA
AU - Deng,H
AU - Dixit,MS
AU - Do,Couto E Silva E
AU - Duboscq,JE
AU - Duchovni,E
AU - Duckeck,G
AU - Duerdoth,IP
AU - Dunwoody,UC
AU - Edwards,JEG
AU - Estabrooks,PG
AU - Evans,HG
AU - Fabbri,F
AU - Fabbro,B
AU - Fanti,M
AU - Fath,P
AU - Fiedler,F
AU - Fierro,M
AU - Fincke-Keeler,M
AU - Fischer,HM
AU - Folman,R
AU - Fong,DG
AU - Foucher,M
AU - Fukui,H
AU - Fürtjes,A
AU - Gagnon,P
AU - Gaidot,A
AU - Gary,JW
AU - Gascon,J
AU - Gascon-Shotkin,SM
AU - Geddes,NI
AU - Geich-Gimbel,C
AU - Gensler,SW
AU - Gentit,FX
AU - Geralis,T
AU - Giacomelli,G
AU - Giacomelli,P
AU - Giacomelli,R
AU - Gibson,V
AU - Gibson,WR
AU - Gillies,JD
EP - 214
PY - 1996///
SN - 0170-9739
SP - 195
TI - Measurement of the average b-baryon lifetime and the product branching ratio f(b → Λb) · BR(Λb → Λ-νX)
T2 - Zeitschrift Fur Physik C Particles and Fields
VL - 69
ER -