Evidence for b-flavoured baryon production in Z0 decays at LEP

P. D. Acton; G. Alexander; J. Allison; P. P. Allport; K. J. Anderson; S. Arcelli; P. Ashton; A. Astbury; D. Axen; G. Azuelos; G. A. Bahan; J. T.M. Baines; A. H. Ball; J. Banks; G. J. Barker; R. J. Barlow; J. R. Batley; G. Beaudoin; A. Beck; J. Becker; T. Behnke; K. W. Bell; G. Bella; P. Berlich; S. Bethke; O. Biebel; U. Binder; I. J. Bloodworth; P. Bock; B. Boden; H. M. Bosch; S. Bougerolle; B. B. Brabson; H. Breuker; R. M. Brown; R. Brun; A. Buijs; H. J. Burckhart; P. Capiluppi; R. K. Carnegie; A. A. Carter; J. R. Carter; C. Y. Chang; D. G. Charlton; P. E.L. Clarke; I. Cohen; W. J. Collins; J. E. Conboy; M. Cooper; M. Couch; M. Coupland; M. Cuffiani; S. Dado; G. M. Dallavalle; S. De Jong; P. Debu; L. A. del Pozo; M. M. Deninno; A. Dieckmann; M. Dittmar; M. S. Dixit; E. do Couto e Silva; E. Duchovni; G. Duckeck; I. P. Duerdoth; D. J.P. Dumas; P. A. Elcombe; P. G. Estabrooks; E. Etzion; H. G. Evans; F. Fabbri; M. Fincke-Keeler; H. M. Fischer; D. G. Fong; C. Fukunaga; A. Gaidot; O. Ganel; J. W. Gary; J. Gascon; R. F. McGowan; N. I. Geddes; C. Geich-Gimbel; S. W. Gensler; F. X. Gentit; G. Giacomelli; V. Gibson; W. R. Gibson; J. D. Gillies; J. Goldberg; M. J. Goodrick; W. Corn; C. Grandi; F. C. Grant; J. Hagemann; G. G. Hanson; M. Hansroul; C. K. Hargrove; P. F. Harrison; J. Hart; P. M. Hattersley; M. Hauschild; C. M. Hawkes; E. Heflin; R. J. Hemingway; R. D. Heuer; J. C. Hill; S. J. Hillier; D. A. Hinshaw; C. Ho; J. D. Hobbs; P. R. Hobson; D. Hochman; R. J. Homer; A. K. Honma; S. R. Hou; C. P. Howarth; R. E. Hughes-Jones; R. Humbert; P. Igo-Kemenes; H. Ihssen; D. C. Imrie; A. C. Janissen; A. Jawahery; P. W. Jeffreys; H. Jeremie; M. Jimack; M. Jobes; R. W.L. Jones; P. Jovanovic; D. Karlen; K. Kawagoe; T. Kawamoto; R. K. Keeler; R. G. Kellogg; B. W. Kennedy; D. E. Klen; T. Kobayashi; T. P. Kokott; S. Komamiya; L. Köpke; J. F. Kral; R. Kowalewski; H. Kreutzmann; J. von Krogh; J. Kroll; M. Kuwano; P. Kyberd; G. D. Lafferty; F. Lamarche; W. J. Larson; J. G. Layter; P. Le Du; P. Leblanc; A. M. Lee; M. H. Lehto; D. Lellouch; P. Lennert; C. Leroy; J. Letts; S. Levegrün; L. Levinson; S. L. Lloyd; F. K. Loebinger; J. M. Lorah; B. Lorazo; M. J. Losty; X. C. Lou; J. Ludwig; M. Mannelli; S. Marcellini; G. Maringer; A. J. Martin; J. P. Martin; T. Mashimo; P. Mättig; U. Maur; J. McKenna; T. J. McMahon; J. R. McMahon; J. R. McNutt; F. Meijers; D. Menszner; F. S. Merritt; H. Mes; A. Michelini; R. P. Middleton; G. Mikenberg; J. Mildenberger; D. J. Miller; R. Mir; W. Mohr; C. Moisan; A. Montanari; T. Mori; M. W. Moss; T. Mouthuy; B. Nellen; H. H. Nguyen; S. W. O'Neale; B. P. O'Neill; F. G. Oakham; F. Odorici; M. Ogg; H. O. Ogren; H. Oh; C. J. Oram; M. J. Oreglia; S. Orito; J. P. Pansart; B. Panzer-Steindel; P. Paschievici; G. N. Patrick; S. J. Pawley; P. Pfister; J. E. Pilcher; D. Pitman; D. E. Plane; P. Poffenberger; B. Poli; A. Pouladdej; E. Prebys; T. W. Pritchard; H. Przysiezniak; G. Quast; M. W. Redmond; D. L. Rees; K. Riles; S. A. Robins; D. Robinson; A. Rollnik; J. M. Roney; E. Ros; S. Rossberg; A. M. Rossi; M. Rosvick; P. Routenburg; K. Runge; O. Runolfsson; D. R. Rust; S. Sanghera; M. Sasaki; A. D. Schaile; O. Schaile; W. Schappert; P. Scharff-Hansen; P. Schenk; H. von der Schmitt; S. Schreiber; J. Schwiening; W. G. Scott; M. Settles; B. C. Shen; P. Sherwood; R. Shypit; A. Simon; P. Singh; G. P. Siroli; A. Skuja; A. M. Smith; T. J. Smith; G. A. Snow; R. Sobie; R. W. Springer; M. Sproston; K. Stephens; R. Ströhmer; D. Strom; H. Takeda; T. Takeshita; P. Taras; S. Tarem; P. Teixeira-Dias; N. J. Thackray; G. Transtromer; T. Tsukamoto; M. F. Turner; G. Tysarczyk-Niemeyer; D. Van den plas; R. Van Kooten; G. J. VanDalen; G. Vasseur; C. J. Virtue; A. Wagner; D. L. Wagner; C. Wahl; J. P. Walker; C. P. Ward; D. R. Ward; P. M. Watkins; A. T. Watson; N. K. Watson; M. Weber; P. Weber; S. Weisz; P. S. Wells; N. Wermes; M. A. Whalley; G. W. Wilson; J. A. Wilson; I. Wingerter; V. H. Winterer; T. Wlodek; N. C. Wood; S. Wotton; T. R. Wyatt; R. Yaari; Y. Yang; G. Yekutieli; M. Yurko; W. Zeuner; G. T. Zorn

doi:10.1016/0370-2693(92)91160-B

Evidence for b-flavoured baryon production in Z⁰ decays at LEP

P. D. Acton
, G. Alexander
, J. Allison
, P. P. Allport
, K. J. Anderson
, S. Arcelli
, P. Ashton
, A. Astbury
, D. Axen
, G. Azuelos
, G. A. Bahan
, J. T.M. Baines
, A. H. Ball
, J. Banks
, G. J. Barker
, R. J. Barlow
, J. R. Batley
, G. Beaudoin
, A. Beck
, J. Becker

T. Behnke, K. W. Bell, G. Bella, P. Berlich, S. Bethke, O. Biebel, U. Binder, I. J. Bloodworth, P. Bock, B. Boden, H. M. Bosch, S. Bougerolle, B. B. Brabson, H. Breuker, R. M. Brown, R. Brun, A. Buijs, H. J. Burckhart, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, P. E.L. Clarke, I. Cohen, W. J. Collins, J. E. Conboy, M. Cooper, M. Couch, M. Coupland, M. Cuffiani, S. Dado, G. M. Dallavalle, S. De Jong, P. Debu, L. A. del Pozo, M. M. Deninno, A. Dieckmann, M. Dittmar, M. S. Dixit, E. do Couto e Silva, E. Duchovni, G. Duckeck, I. P. Duerdoth, D. J.P. Dumas, P. A. Elcombe, P. G. Estabrooks, E. Etzion, H. G. Evans, F. Fabbri, M. Fincke-Keeler, H. M. Fischer, D. G. Fong, C. Fukunaga, A. Gaidot, O. Ganel, J. W. Gary, J. Gascon, R. F. McGowan, N. I. Geddes, C. Geich-Gimbel, S. W. Gensler, F. X. Gentit, G. Giacomelli, V. Gibson, W. R. Gibson, J. D. Gillies, J. Goldberg, M. J. Goodrick, W. Corn, C. Grandi, F. C. Grant, J. Hagemann, G. G. Hanson, M. Hansroul, C. K. Hargrove, P. F. Harrison, J. Hart, P. M. Hattersley, M. Hauschild, C. M. Hawkes, E. Heflin, R. J. Hemingway, R. D. Heuer, J. C. Hill, S. J. Hillier, D. A. Hinshaw, C. Ho, J. D. Hobbs, P. R. Hobson, D. Hochman, R. J. Homer, A. K. Honma, S. R. Hou, C. P. Howarth, R. E. Hughes-Jones, R. Humbert, P. Igo-Kemenes, H. Ihssen, D. C. Imrie, A. C. Janissen, A. Jawahery, P. W. Jeffreys, H. Jeremie, M. Jimack, M. Jobes, R. W.L. Jones, P. Jovanovic, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, D. E. Klen, T. Kobayashi, T. P. Kokott, S. Komamiya, L. Köpke, J. F. Kral, R. Kowalewski, H. Kreutzmann, J. von Krogh, J. Kroll, M. Kuwano, P. Kyberd, G. D. Lafferty, F. Lamarche, W. J. Larson, J. G. Layter, P. Le Du, P. Leblanc, A. M. Lee, M. H. Lehto, D. Lellouch, P. Lennert, C. Leroy, J. Letts, S. Levegrün, L. Levinson, S. L. Lloyd, F. K. Loebinger, J. M. Lorah, B. Lorazo, M. J. Losty, X. C. Lou, J. Ludwig, M. Mannelli, S. Marcellini, G. Maringer, A. J. Martin, J. P. Martin, T. Mashimo, P. Mättig, U. Maur, J. McKenna, T. J. McMahon, J. R. McMahon, J. R. McNutt, F. Meijers, D. Menszner, F. S. Merritt, H. Mes, A. Michelini, R. P. Middleton, G. Mikenberg, J. Mildenberger, D. J. Miller, R. Mir, W. Mohr, C. Moisan, A. Montanari, T. Mori, M. W. Moss, T. Mouthuy, B. Nellen, H. H. Nguyen, S. W. O'Neale, B. P. O'Neill, F. G. Oakham, F. Odorici, M. Ogg, H. O. Ogren, H. Oh, C. J. Oram, M. J. Oreglia, S. Orito, J. P. Pansart, B. Panzer-Steindel, P. Paschievici, G. N. Patrick, S. J. Pawley, P. Pfister, J. E. Pilcher, D. Pitman, D. E. Plane, P. Poffenberger, B. Poli, A. Pouladdej, E. Prebys, T. W. Pritchard, H. Przysiezniak, G. Quast, M. W. Redmond, D. L. Rees, K. Riles, S. A. Robins, D. Robinson, A. Rollnik, J. M. Roney, E. Ros, S. Rossberg, A. M. Rossi, M. Rosvick, P. Routenburg, K. Runge, O. Runolfsson, D. R. Rust, S. Sanghera, M. Sasaki, A. D. Schaile, O. Schaile, W. Schappert, P. Scharff-Hansen, P. Schenk, H. von der Schmitt, S. Schreiber, J. Schwiening, W. G. Scott, M. Settles, B. C. Shen, P. Sherwood, R. Shypit, A. Simon, P. Singh, G. P. Siroli, A. Skuja, A. M. Smith, T. J. Smith, G. A. Snow, R. Sobie, R. W. Springer, M. Sproston, K. Stephens, R. Ströhmer, D. Strom, H. Takeda, T. Takeshita, P. Taras, S. Tarem, P. Teixeira-Dias, N. J. Thackray, G. Transtromer, T. Tsukamoto, M. F. Turner, G. Tysarczyk-Niemeyer, D. Van den plas, R. Van Kooten, G. J. VanDalen, G. Vasseur, C. J. Virtue, A. Wagner, D. L. Wagner, C. Wahl, J. P. Walker, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, M. Weber, P. Weber, S. Weisz, P. S. Wells, N. Wermes, M. A. Whalley, G. W. Wilson, J. A. Wilson, I. Wingerter, V. H. Winterer, T. Wlodek, N. C. Wood, S. Wotton, T. R. Wyatt, R. Yaari, Y. Yang, G. Yekutieli, M. Yurko, W. Zeuner, G. T. Zorn

Physics and Astronomy

Brunel University London
Tel Aviv University
University of Manchester
University of Cambridge
The University of Chicago
University of Bologna
University of Victoria BC
University of British Columbia
University of Montreal
University of Maryland, College Park
Queen Mary University of London
University of Freiburg
University of Hamburg
STFC Rutherford Appleton Laboratory
Heidelberg University
University of Bonn
University of Birmingham
Indiana University Bloomington
CERN
Carleton University
University College London
Technion-Israel Institute of Technology
Birkbeck University of London
CEA Saclay
University of California at Riverside
Weizmann Institute of Science
The University of Tokyo
Kobe University
National Research Council of Canada

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

We observe evidence for the production of b-flavoured baryons in decays of the Z⁰ boson with the OPAL detector at LEP. We find 68 Λl^-, Λl⁺ candidates in 458 583 hadronic Z⁰ decays. We interpret this as a signal of 55 ± 9^+0.3 _-3.1 events from the semi-leptonic decays of b baryons. Assuming weakly decaying b baryons produced in Z⁰ decays are mostly Λ_b particles, we measure the product branching ratio (Γ_{bb/Γ_had)} f (b→Λ_b) B (Λ_b→Λl^-vX), averaged over the electron and muon channels, to be (6.2±1.0±1.5)×10^-4.

Original language	English
Pages (from-to)	394-404
Number of pages	11
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	281
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(92)91160-B
State	Published - May 14 1992

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10.1016/0370-2693(92)91160-B

Cite this

Acton, P. D., Alexander, G., Allison, J., Allport, P. P., Anderson, K. J., Arcelli, S., Ashton, P., Astbury, A., Axen, D., Azuelos, G., Bahan, G. A., Baines, J. T. M., Ball, A. H., Banks, J., Barker, G. J., Barlow, R. J., Batley, J. R., Beaudoin, G., Beck, A., ... Zorn, G. T. (1992). Evidence for b-flavoured baryon production in Z⁰ decays at LEP. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 281(3-4), 394-404. https://doi.org/10.1016/0370-2693(92)91160-B

@article{7c2f26ba2eb34f8c875fb9c832209d99,

title = "Evidence for b-flavoured baryon production in Z0 decays at LEP",

abstract = "We observe evidence for the production of b-flavoured baryons in decays of the Z0 boson with the OPAL detector at LEP. We find 68 Λl-, Λl+ candidates in 458 583 hadronic Z0 decays. We interpret this as a signal of 55 ± 9+0.3 -3.1 events from the semi-leptonic decays of b baryons. Assuming weakly decaying b baryons produced in Z0 decays are mostly Λb particles, we measure the product branching ratio (Γbb/Γhad) f (b→Λb) B (Λb→Λl-vX), averaged over the electron and muon channels, to be (6.2±1.0±1.5)×10-4.",

author = "Acton, \{P. D.\} and G. Alexander and J. Allison and Allport, \{P. P.\} and Anderson, \{K. J.\} and S. Arcelli and P. Ashton and A. Astbury and D. Axen and G. Azuelos and Bahan, \{G. A.\} and Baines, \{J. T.M.\} and Ball, \{A. H.\} and J. Banks and Barker, \{G. J.\} and Barlow, \{R. J.\} and Batley, \{J. R.\} and G. Beaudoin and A. Beck and J. Becker and T. Behnke and Bell, \{K. W.\} and G. Bella and P. Berlich and S. Bethke and O. Biebel and U. Binder and Bloodworth, \{I. J.\} and P. Bock and B. Boden and Bosch, \{H. M.\} and S. Bougerolle and Brabson, \{B. B.\} and H. Breuker and Brown, \{R. M.\} and R. Brun and A. Buijs and Burckhart, \{H. J.\} and P. Capiluppi and Carnegie, \{R. K.\} and Carter, \{A. A.\} and Carter, \{J. R.\} and Chang, \{C. Y.\} and Charlton, \{D. G.\} and Clarke, \{P. E.L.\} and I. Cohen and Collins, \{W. J.\} and Conboy, \{J. E.\} and M. Cooper and M. Couch and M. Coupland and M. Cuffiani and S. Dado and Dallavalle, \{G. M.\} and \{De Jong\}, S. and P. Debu and \{del Pozo\}, \{L. A.\} and Deninno, \{M. M.\} and A. Dieckmann and M. Dittmar and Dixit, \{M. S.\} and \{do Couto e Silva\}, E. and E. Duchovni and G. Duckeck and Duerdoth, \{I. P.\} and Dumas, \{D. J.P.\} and Elcombe, \{P. A.\} and Estabrooks, \{P. G.\} and E. Etzion and Evans, \{H. G.\} and F. Fabbri and M. Fincke-Keeler and Fischer, \{H. M.\} and Fong, \{D. G.\} and C. Fukunaga and A. Gaidot and O. Ganel and Gary, \{J. W.\} and J. Gascon and McGowan, \{R. F.\} and Geddes, \{N. I.\} and C. Geich-Gimbel and Gensler, \{S. W.\} and Gentit, \{F. X.\} and G. Giacomelli and V. Gibson and Gibson, \{W. R.\} and Gillies, \{J. D.\} and J. Goldberg and Goodrick, \{M. J.\} and W. Corn and C. Grandi and Grant, \{F. C.\} and J. Hagemann and Hanson, \{G. G.\} and M. Hansroul and Hargrove, \{C. K.\} and Harrison, \{P. F.\} and J. Hart and Hattersley, \{P. M.\} and M. Hauschild and Hawkes, \{C. M.\} and E. Heflin and Hemingway, \{R. J.\} and Heuer, \{R. D.\} and Hill, \{J. C.\} and Hillier, \{S. J.\} and Hinshaw, \{D. A.\} and C. Ho and Hobbs, \{J. D.\} and Hobson, \{P. R.\} and D. Hochman and Homer, \{R. J.\} and Honma, \{A. K.\} and Hou, \{S. R.\} and Howarth, \{C. P.\} and Hughes-Jones, \{R. E.\} and R. Humbert and P. Igo-Kemenes and H. Ihssen and Imrie, \{D. C.\} and Janissen, \{A. C.\} and A. Jawahery and Jeffreys, \{P. W.\} and H. Jeremie and M. Jimack and M. Jobes and Jones, \{R. W.L.\} and P. Jovanovic and D. Karlen and K. Kawagoe and T. Kawamoto and Keeler, \{R. K.\} and Kellogg, \{R. G.\} and Kennedy, \{B. W.\} and Klen, \{D. E.\} and T. Kobayashi and Kokott, \{T. P.\} and S. Komamiya and L. K{\"o}pke and Kral, \{J. F.\} and R. Kowalewski and H. Kreutzmann and \{von Krogh\}, J. and J. Kroll and M. Kuwano and P. Kyberd and Lafferty, \{G. D.\} and F. Lamarche and Larson, \{W. J.\} and Layter, \{J. G.\} and \{Le Du\}, P. and P. Leblanc and Lee, \{A. M.\} and Lehto, \{M. H.\} and D. Lellouch and P. Lennert and C. Leroy and J. Letts and S. Levegr{\"u}n and L. Levinson and Lloyd, \{S. L.\} and Loebinger, \{F. K.\} and Lorah, \{J. M.\} and B. Lorazo and Losty, \{M. J.\} and Lou, \{X. C.\} and J. Ludwig and M. Mannelli and S. Marcellini and G. Maringer and Martin, \{A. J.\} and Martin, \{J. P.\} and T. Mashimo and P. M{\"a}ttig and U. Maur and J. McKenna and McMahon, \{T. J.\} and McMahon, \{J. R.\} and McNutt, \{J. R.\} and F. Meijers and D. Menszner and Merritt, \{F. S.\} and H. Mes and A. Michelini and Middleton, \{R. P.\} and G. Mikenberg and J. Mildenberger and Miller, \{D. J.\} and R. Mir and W. Mohr and C. Moisan and A. Montanari and T. Mori and Moss, \{M. W.\} and T. Mouthuy and B. Nellen and Nguyen, \{H. H.\} and O'Neale, \{S. W.\} and O'Neill, \{B. P.\} and Oakham, \{F. G.\} and F. Odorici and M. Ogg and Ogren, \{H. O.\} and H. Oh and Oram, \{C. J.\} and Oreglia, \{M. J.\} and S. Orito and Pansart, \{J. P.\} and B. Panzer-Steindel and P. Paschievici and Patrick, \{G. N.\} and Pawley, \{S. J.\} and P. Pfister and Pilcher, \{J. E.\} and D. Pitman and Plane, \{D. E.\} and P. Poffenberger and B. Poli and A. Pouladdej and E. Prebys and Pritchard, \{T. W.\} and H. Przysiezniak and G. Quast and Redmond, \{M. W.\} and Rees, \{D. L.\} and K. Riles and Robins, \{S. A.\} and D. Robinson and A. Rollnik and Roney, \{J. M.\} and E. Ros and S. Rossberg and Rossi, \{A. M.\} and M. Rosvick and P. Routenburg and K. Runge and O. Runolfsson and Rust, \{D. R.\} and S. Sanghera and M. Sasaki and Schaile, \{A. D.\} and O. Schaile and W. Schappert and P. Scharff-Hansen and P. Schenk and \{von der Schmitt\}, H. and S. Schreiber and J. Schwiening and Scott, \{W. G.\} and M. Settles and Shen, \{B. C.\} and P. Sherwood and R. Shypit and A. Simon and P. Singh and Siroli, \{G. P.\} and A. Skuja and Smith, \{A. M.\} and Smith, \{T. J.\} and Snow, \{G. A.\} and R. Sobie and Springer, \{R. W.\} and M. Sproston and K. Stephens and R. Str{\"o}hmer and D. Strom and H. Takeda and T. Takeshita and P. Taras and S. Tarem and P. Teixeira-Dias and Thackray, \{N. J.\} and G. Transtromer and T. Tsukamoto and Turner, \{M. F.\} and G. Tysarczyk-Niemeyer and \{Van den plas\}, D. and \{Van Kooten\}, R. and VanDalen, \{G. J.\} and G. Vasseur and Virtue, \{C. J.\} and A. Wagner and Wagner, \{D. L.\} and C. Wahl and Walker, \{J. P.\} and Ward, \{C. P.\} and Ward, \{D. R.\} and Watkins, \{P. M.\} and Watson, \{A. T.\} and Watson, \{N. K.\} and M. Weber and P. Weber and S. Weisz and Wells, \{P. S.\} and N. Wermes and Whalley, \{M. A.\} and Wilson, \{G. W.\} and Wilson, \{J. A.\} and I. Wingerter and Winterer, \{V. H.\} and T. Wlodek and Wood, \{N. C.\} and S. Wotton and Wyatt, \{T. R.\} and R. Yaari and Y. Yang and G. Yekutieli and M. Yurko and W. Zeuner and Zorn, \{G. T.\}",

year = "1992",

month = may,

day = "14",

doi = "10.1016/0370-2693(92)91160-B",

language = "English",

volume = "281",

pages = "394--404",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "3-4",

}

Acton, PD, Alexander, G, Allison, J, Allport, PP, Anderson, KJ, Arcelli, S, Ashton, P, Astbury, A, Axen, D, Azuelos, G, Bahan, GA, Baines, JTM, Ball, AH, Banks, J, Barker, GJ, Barlow, RJ, Batley, JR, Beaudoin, G, Beck, A, Becker, J, Behnke, T, Bell, KW, Bella, G, Berlich, P, Bethke, S, Biebel, O, Binder, U, Bloodworth, IJ, Bock, P, Boden, B, Bosch, HM, Bougerolle, S, Brabson, BB, Breuker, H, Brown, RM, Brun, R, Buijs, A, Burckhart, HJ, Capiluppi, P, Carnegie, RK, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Clarke, PEL, Cohen, I, Collins, WJ, Conboy, JE, Cooper, M, Couch, M, Coupland, M, Cuffiani, M, Dado, S, Dallavalle, GM, De Jong, S, Debu, P, del Pozo, LA, Deninno, MM, Dieckmann, A, Dittmar, M, Dixit, MS, do Couto e Silva, E, Duchovni, E, Duckeck, G, Duerdoth, IP, Dumas, DJP, Elcombe, PA, Estabrooks, PG, Etzion, E, Evans, HG, Fabbri, F, Fincke-Keeler, M, Fischer, HM, Fong, DG, Fukunaga, C, Gaidot, A, Ganel, O, Gary, JW, Gascon, J, McGowan, RF, Geddes, NI, Geich-Gimbel, C, Gensler, SW, Gentit, FX, Giacomelli, G, Gibson, V, Gibson, WR, Gillies, JD, Goldberg, J, Goodrick, MJ, Corn, W, Grandi, C, Grant, FC, Hagemann, J, Hanson, GG, Hansroul, M, Hargrove, CK, Harrison, PF, Hart, J, Hattersley, PM, Hauschild, M, Hawkes, CM, Heflin, E, Hemingway, RJ, Heuer, RD, Hill, JC, Hillier, SJ, Hinshaw, DA, Ho, C, Hobbs, JD, Hobson, PR, Hochman, D, Homer, RJ, Honma, AK, Hou, SR, Howarth, CP, Hughes-Jones, RE, Humbert, R, Igo-Kemenes, P, Ihssen, H, Imrie, DC, Janissen, AC, Jawahery, A, Jeffreys, PW, Jeremie, H, Jimack, M, Jobes, M, Jones, RWL, Jovanovic, P, Karlen, D, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellogg, RG, Kennedy, BW, Klen, DE, Kobayashi, T, Kokott, TP, Komamiya, S, Köpke, L, Kral, JF, Kowalewski, R, Kreutzmann, H, von Krogh, J, Kroll, J, Kuwano, M, Kyberd, P, Lafferty, GD, Lamarche, F, Larson, WJ, Layter, JG, Le Du, P, Leblanc, P, Lee, AM, Lehto, MH, Lellouch, D, Lennert, P, Leroy, C, Letts, J, Levegrün, S, Levinson, L, Lloyd, SL, Loebinger, FK, Lorah, JM, Lorazo, B, Losty, MJ, Lou, XC, Ludwig, J, Mannelli, M, Marcellini, S, Maringer, G, Martin, AJ, Martin, JP, Mashimo, T, Mättig, P, Maur, U, McKenna, J, McMahon, TJ, McMahon, JR, McNutt, JR, Meijers, F, Menszner, D, Merritt, FS, Mes, H, Michelini, A, Middleton, RP, Mikenberg, G, Mildenberger, J, Miller, DJ, Mir, R, Mohr, W, Moisan, C, Montanari, A, Mori, T, Moss, MW, Mouthuy, T, Nellen, B, Nguyen, HH, O'Neale, SW, O'Neill, BP, Oakham, FG, Odorici, F, Ogg, M, Ogren, HO, Oh, H, Oram, CJ, Oreglia, MJ, Orito, S, Pansart, JP, Panzer-Steindel, B, Paschievici, P, Patrick, GN, Pawley, SJ, Pfister, P, Pilcher, JE, Pitman, D, Plane, DE, Poffenberger, P, Poli, B, Pouladdej, A, Prebys, E, Pritchard, TW, Przysiezniak, H, Quast, G, Redmond, MW, Rees, DL, Riles, K, Robins, SA, Robinson, D, Rollnik, A, Roney, JM, Ros, E, Rossberg, S, Rossi, AM, Rosvick, M, Routenburg, P, Runge, K, Runolfsson, O, Rust, DR, Sanghera, S, Sasaki, M, Schaile, AD, Schaile, O, Schappert, W, Scharff-Hansen, P, Schenk, P, von der Schmitt, H, Schreiber, S, Schwiening, J, Scott, WG, Settles, M, Shen, BC, Sherwood, P, Shypit, R, Simon, A, Singh, P, Siroli, GP, Skuja, A, Smith, AM, Smith, TJ, Snow, GA, Sobie, R, Springer, RW, Sproston, M, Stephens, K, Ströhmer, R, Strom, D, Takeda, H, Takeshita, T, Taras, P, Tarem, S, Teixeira-Dias, P, Thackray, NJ, Transtromer, G, Tsukamoto, T, Turner, MF, Tysarczyk-Niemeyer, G, Van den plas, D, Van Kooten, R, VanDalen, GJ, Vasseur, G, Virtue, CJ, Wagner, A, Wagner, DL, Wahl, C, Walker, JP, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Weber, M, Weber, P, Weisz, S, Wells, PS, Wermes, N, Whalley, MA, Wilson, GW, Wilson, JA, Wingerter, I, Winterer, VH, Wlodek, T, Wood, NC, Wotton, S, Wyatt, TR, Yaari, R, Yang, Y, Yekutieli, G, Yurko, M, Zeuner, W & Zorn, GT 1992, 'Evidence for b-flavoured baryon production in Z⁰ decays at LEP', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 281, no. 3-4, pp. 394-404. https://doi.org/10.1016/0370-2693(92)91160-B

TY - JOUR

T1 - Evidence for b-flavoured baryon production in Z0 decays at LEP

AU - Acton, P. D.

AU - Alexander, G.

AU - Allison, J.

AU - Allport, P. P.

AU - Anderson, K. J.

AU - Arcelli, S.

AU - Ashton, P.

AU - Astbury, A.

AU - Axen, D.

AU - Azuelos, G.

AU - Bahan, G. A.

AU - Baines, J. T.M.

AU - Ball, A. H.

AU - Banks, J.

AU - Barker, G. J.

AU - Barlow, R. J.

AU - Batley, J. R.

AU - Beaudoin, G.

AU - Beck, A.

AU - Becker, J.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Berlich, P.

AU - Bethke, S.

AU - Biebel, O.

AU - Binder, U.

AU - Bloodworth, I. J.

AU - Bock, P.

AU - Boden, B.

AU - Bosch, H. M.

AU - Bougerolle, S.

AU - Brabson, B. B.

AU - Breuker, H.

AU - Brown, R. M.

AU - Brun, R.

AU - Buijs, A.

AU - Burckhart, H. J.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Clarke, P. E.L.

AU - Cohen, I.

AU - Collins, W. J.

AU - Conboy, J. E.

AU - Cooper, M.

AU - Couch, M.

AU - Coupland, M.

AU - Cuffiani, M.

AU - Dado, S.

AU - Dallavalle, G. M.

AU - De Jong, S.

AU - Debu, P.

AU - del Pozo, L. A.

AU - Deninno, M. M.

AU - Dieckmann, A.

AU - Dittmar, M.

AU - Dixit, M. S.

AU - do Couto e Silva, E.

AU - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Dumas, D. J.P.

AU - Elcombe, P. A.

AU - Estabrooks, P. G.

AU - Etzion, E.

AU - Evans, H. G.

AU - Fabbri, F.

AU - Fincke-Keeler, M.

AU - Fischer, H. M.

AU - Fong, D. G.

AU - Fukunaga, C.

AU - Gaidot, A.

AU - Ganel, O.

AU - Gary, J. W.

AU - Gascon, J.

AU - McGowan, R. F.

AU - Geddes, N. I.

AU - Geich-Gimbel, C.

AU - Gensler, S. W.

AU - Gentit, F. X.

AU - Giacomelli, G.

AU - Gibson, V.

AU - Gibson, W. R.

AU - Gillies, J. D.

AU - Goldberg, J.

AU - Goodrick, M. J.

AU - Corn, W.

AU - Grandi, C.

AU - Grant, F. C.

AU - Hagemann, J.

AU - Hanson, G. G.

AU - Hansroul, M.

AU - Hargrove, C. K.

AU - Harrison, P. F.

AU - Hart, J.

AU - Hattersley, P. M.

AU - Hauschild, M.

AU - Hawkes, C. M.

AU - Heflin, E.

AU - Hemingway, R. J.

AU - Heuer, R. D.

AU - Hill, J. C.

AU - Hillier, S. J.

AU - Hinshaw, D. A.

AU - Ho, C.

AU - Hobbs, J. D.

AU - Hobson, P. R.

AU - Hochman, D.

AU - Homer, R. J.

AU - Honma, A. K.

AU - Hou, S. R.

AU - Howarth, C. P.

AU - Hughes-Jones, R. E.

AU - Humbert, R.

AU - Igo-Kemenes, P.

AU - Ihssen, H.

AU - Imrie, D. C.

AU - Janissen, A. C.

AU - Jawahery, A.

AU - Jeffreys, P. W.

AU - Jeremie, H.

AU - Jimack, M.

AU - Jobes, M.

AU - Jones, R. W.L.

AU - Jovanovic, P.

AU - Karlen, D.

AU - Kawagoe, K.

AU - Kawamoto, T.

AU - Keeler, R. K.

AU - Kellogg, R. G.

AU - Kennedy, B. W.

AU - Klen, D. E.

AU - Kobayashi, T.

AU - Kokott, T. P.

AU - Komamiya, S.

AU - Köpke, L.

AU - Kral, J. F.

AU - Kowalewski, R.

AU - Kreutzmann, H.

AU - von Krogh, J.

AU - Kroll, J.

AU - Kuwano, M.

AU - Kyberd, P.

AU - Lafferty, G. D.

AU - Lamarche, F.

AU - Larson, W. J.

AU - Layter, J. G.

AU - Le Du, P.

AU - Leblanc, P.

AU - Lee, A. M.

AU - Lehto, M. H.

AU - Lellouch, D.

AU - Lennert, P.

AU - Leroy, C.

AU - Letts, J.

AU - Levegrün, S.

AU - Levinson, L.

AU - Lloyd, S. L.

AU - Loebinger, F. K.

AU - Lorah, J. M.

AU - Lorazo, B.

AU - Losty, M. J.

AU - Lou, X. C.

AU - Ludwig, J.

AU - Mannelli, M.

AU - Marcellini, S.

AU - Maringer, G.

AU - Martin, A. J.

AU - Martin, J. P.

AU - Mashimo, T.

AU - Mättig, P.

AU - Maur, U.

AU - McKenna, J.

AU - McMahon, T. J.

AU - McMahon, J. R.

AU - McNutt, J. R.

AU - Meijers, F.

AU - Menszner, D.

AU - Merritt, F. S.

AU - Mes, H.

AU - Michelini, A.

AU - Middleton, R. P.

AU - Mikenberg, G.

AU - Mildenberger, J.

AU - Miller, D. J.

AU - Mir, R.

AU - Mohr, W.

AU - Moisan, C.

AU - Montanari, A.

AU - Mori, T.

AU - Moss, M. W.

AU - Mouthuy, T.

AU - Nellen, B.

AU - Nguyen, H. H.

AU - O'Neale, S. W.

AU - O'Neill, B. P.

AU - Oakham, F. G.

AU - Odorici, F.

AU - Ogg, M.

AU - Ogren, H. O.

AU - Oh, H.

AU - Oram, C. J.

AU - Oreglia, M. J.

AU - Orito, S.

AU - Pansart, J. P.

AU - Panzer-Steindel, B.

AU - Paschievici, P.

AU - Patrick, G. N.

AU - Pawley, S. J.

AU - Pfister, P.

AU - Pilcher, J. E.

AU - Pitman, D.

AU - Plane, D. E.

AU - Poffenberger, P.

AU - Poli, B.

AU - Pouladdej, A.

AU - Prebys, E.

AU - Pritchard, T. W.

AU - Przysiezniak, H.

AU - Quast, G.

AU - Redmond, M. W.

AU - Rees, D. L.

AU - Riles, K.

AU - Robins, S. A.

AU - Robinson, D.

AU - Rollnik, A.

AU - Roney, J. M.

AU - Ros, E.

AU - Rossberg, S.

AU - Rossi, A. M.

AU - Rosvick, M.

AU - Routenburg, P.

AU - Runge, K.

AU - Runolfsson, O.

AU - Rust, D. R.

AU - Sanghera, S.

AU - Sasaki, M.

AU - Schaile, A. D.

AU - Schaile, O.

AU - Schappert, W.

AU - Scharff-Hansen, P.

AU - Schenk, P.

AU - von der Schmitt, H.

AU - Schreiber, S.

AU - Schwiening, J.

AU - Scott, W. G.

AU - Settles, M.

AU - Shen, B. C.

AU - Sherwood, P.

AU - Shypit, R.

AU - Simon, A.

AU - Singh, P.

AU - Siroli, G. P.

AU - Skuja, A.

AU - Smith, A. M.

AU - Smith, T. J.

AU - Snow, G. A.

AU - Sobie, R.

AU - Springer, R. W.

AU - Sproston, M.

AU - Stephens, K.

AU - Ströhmer, R.

AU - Strom, D.

AU - Takeda, H.

AU - Takeshita, T.

AU - Taras, P.

AU - Tarem, S.

AU - Teixeira-Dias, P.

AU - Thackray, N. J.

AU - Transtromer, G.

AU - Tsukamoto, T.

AU - Turner, M. F.

AU - Tysarczyk-Niemeyer, G.

AU - Van den plas, D.

AU - Van Kooten, R.

AU - VanDalen, G. J.

AU - Vasseur, G.

AU - Virtue, C. J.

AU - Wagner, A.

AU - Wagner, D. L.

AU - Wahl, C.

AU - Walker, J. P.

AU - Ward, C. P.

AU - Ward, D. R.

AU - Watkins, P. M.

AU - Watson, A. T.

AU - Watson, N. K.

AU - Weber, M.

AU - Weber, P.

AU - Weisz, S.

AU - Wells, P. S.

AU - Wermes, N.

AU - Whalley, M. A.

AU - Wilson, G. W.

AU - Wilson, J. A.

AU - Wingerter, I.

AU - Winterer, V. H.

AU - Wlodek, T.

AU - Wood, N. C.

AU - Wotton, S.

AU - Wyatt, T. R.

AU - Yaari, R.

AU - Yang, Y.

AU - Yekutieli, G.

AU - Yurko, M.

AU - Zeuner, W.

AU - Zorn, G. T.

PY - 1992/5/14

Y1 - 1992/5/14

N2 - We observe evidence for the production of b-flavoured baryons in decays of the Z0 boson with the OPAL detector at LEP. We find 68 Λl-, Λl+ candidates in 458 583 hadronic Z0 decays. We interpret this as a signal of 55 ± 9+0.3 -3.1 events from the semi-leptonic decays of b baryons. Assuming weakly decaying b baryons produced in Z0 decays are mostly Λb particles, we measure the product branching ratio (Γbb/Γhad) f (b→Λb) B (Λb→Λl-vX), averaged over the electron and muon channels, to be (6.2±1.0±1.5)×10-4.

AB - We observe evidence for the production of b-flavoured baryons in decays of the Z0 boson with the OPAL detector at LEP. We find 68 Λl-, Λl+ candidates in 458 583 hadronic Z0 decays. We interpret this as a signal of 55 ± 9+0.3 -3.1 events from the semi-leptonic decays of b baryons. Assuming weakly decaying b baryons produced in Z0 decays are mostly Λb particles, we measure the product branching ratio (Γbb/Γhad) f (b→Λb) B (Λb→Λl-vX), averaged over the electron and muon channels, to be (6.2±1.0±1.5)×10-4.

UR - https://www.scopus.com/pages/publications/0001057826

U2 - 10.1016/0370-2693(92)91160-B

DO - 10.1016/0370-2693(92)91160-B

M3 - Article

AN - SCOPUS:0001057826

SN - 0370-2693

VL - 281

SP - 394

EP - 404

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 3-4

ER -

Evidence for b-flavoured baryon production in Z⁰ decays at LEP

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