A measurement of the average lifetime of b-flavoured baryons

R. Akers; G. Alexander; J. Allison; K. J. Anderson; S. Arcelli; A. Astbury; D. Axen; G. Azuelos; J. T.M. Baines; A. H. Ball; J. Banks; R. J. Barlow; S. Barnett; R. Bartoldus; J. R. Batley; G. Beaudoin; A. Beck; G. A. Beck; J. Becker; C. Beeston; T. Behnke; K. W. Bell; G. Bella; P. Bentkowski; P. Berlich; S. Bethke; O. Biebel; I. J. Bloodworth; P. Bock; B. Boden; H. M. Bosch; M. Boutemeur; H. Breuker; P. Bright-Thomas; R. M. Brown; A. Buijs; H. J. Burckhart; C. Burgard; P. Capiluppi; R. K. Carnegie; A. A. Carter; J. R. Carter; C. Y. Chang; D. G. Charlton; S. L. Chu; P. E.L. Clarke; J. C. Clayton; I. Cohen; J. E. Conboy; M. Cooper; M. Coupland; M. Cuffiani; S. Dado; G. M. Dallavalle; S. De Jong; L. A. del Pozo; H. Deng; A. Dieckmann; M. Dittmar; M. S. Dixit; E. do Couto e Silva; J. E. Duboscq; E. Duchovni; G. Duckeck; I. P. Duerdoth; D. J.P. Dumas; P. A. Elcombe; P. G. Estabrooks; E. Etzion; H. G. Evans; F. Fabbri; B. Fabbro; M. Fierro; M. Fincke-Keeler; H. M. Fischer; D. G. Fong; M. Foucher; A. Gaidot; J. W. Gary; J. Gascon; N. I. Geddes; C. Geich-Gimbel; S. W. Gensler; F. X. Gentit; G. Giacomelli; R. Giacomelli; V. Gibson; W. R. Gibson; J. D. Gillies; J. Goldberg; D. M. Gingrich; M. J. Goodrick; W. Gorn; 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; G. Herten; R. D. Heuer; J. C. Hill; S. J. Hillier; T. Hilse; D. A. Hinshaw; J. D. Hobbs; P. R. Hobson; D. Hochman; R. J. Homer; A. K. Honma; 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. Jones; R. W.L. Jones; P. Jovanovic; C. Jui; D. Karlen; K. Kawagoe; T. Kawamoto; R. K. Keeler; R. G. Kellog; B. W. Kennedy; J. King; S. Kluth; T. Kobayashi; D. S. Koetke; T. P. Kokott; S. Komamiya; J. F. Kral; R. Kowalewski; J. von Krogh; J. Kroll; P. Kyberd; G. D. Lafferty; H. Lafoux; R. Lahmann; J. Lauber; J. G. Layter; P. Leblanc; A. M. Lee; E. Lefebvre; M. H. Lehto; D. Lellouch; C. Leroy; J. Letts; L. Levinson; S. L. Lloyd; F. K. Loebinger; J. M. Lorah; B. Lorazo; M. J. Losty; X. C. Lou; J. Ludwig; A. Luig; M. Mannelli; S. Marcellini; C. Markus; A. J. Martin; T. Mashimo; P. Mättig; U. Maur; J. McKenna; T. J. 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. Morii; U. Müller; B. Nellen; H. H. Nguyen; S. W. O'Neale; F. G. Oakham; F. Odorici; H. O. Ogren; C. J. Oram; M. J. Oreglia; S. Orito; J. P. Pansart; B. Panzer-Steindel; P. Paschievici; G. N. Patrick; N. Paz-Jaoshvili; M. J. Pearce; P. Pfister; J. E. Pilcher; J. Pinfold; D. Pitman; D. E. Plane; P. Poffenberger; B. Poli; T. W. Pritchard; H. Przysiezniak; G. Quast; M. W. Redmond; D. L. Rees; G. E. Richards; M. Rison; 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; M. Sasaki; C. Sbarra; A. D. Schaile; O. Schaile; W. Schappert; F. Scharf; P. Scharff-Hansen; P. Schenk; B. Schmitt; H. von der Schmitt; M. Schröder; C. Schwick; J. Schwiening; W. G. Scott; M. Settles; T. G. Shears; B. C. Shen; C. H. Shepherd-Themistocleous; P. Sherwood; G. P. Siroli; A. Skillman; A. Skuja; A. M. Smith; T. J. Smith; G. A. Snow; R. Sobie; R. W. Springer; M. Sproston; A. Stahl; C. Stegmann; K. Stephens; J. Steuerer; R. Ströhmer; D. Strom; H. Takeda; T. Takeshita; S. Tarem; M. Tecchio; P. Teixeira-Dias; N. Tesch; M. A. Thomson; E. Torrente-Lujan; S. Towers; G. Transtromer; N. J. Tresilian; T. Tsukamoto; M. F. Turner; D. Van den plas; R. Van Kooten; G. J. VanDalen; G. Vasseur; A. Wagner; D. L. Wagner; C. Wahl; C. P. Ward; D. R. Ward; P. M. Watkins; A. T. Watson; N. K. Watson; M. Weber; P. Weber; P. S. Wells; N. Wermes; M. A. Whalley; B. Wilkens; G. W. Wilson; J. A. Wilson; V. H. Winterer; T. Wlodek; G. Wolf; S. Wotton; T. R. Wyatt; R. Yaari; A. Yeaman; G. Yekutieli; M. Yurko; W. Zeuner; G. T. Zorn

doi:10.1016/0370-2693(93)90349-M

A measurement of the average lifetime of b-flavoured baryons

R. Akers^*, G. Alexander, J. Allison, K. J. Anderson, S. Arcelli, A. Astbury, D. Axen, G. Azuelos, J. T.M. Baines, A. H. Ball, J. Banks, R. J. Barlow, S. Barnett, R. Bartoldus, J. R. Batley, G. Beaudoin, A. Beck, G. A. Beck, J. Becker, C. BeestonT. Behnke, K. W. Bell, G. Bella, P. Bentkowski, P. Berlich, S. Bethke, O. Biebel, I. J. Bloodworth, P. Bock, B. Boden, H. M. Bosch, M. Boutemeur, H. Breuker, P. Bright-Thomas, R. M. Brown, A. Buijs, H. J. Burckhart, C. Burgard, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, S. L. Chu, P. E.L. Clarke, J. C. Clayton, I. Cohen, J. E. Conboy, M. Cooper, M. Coupland, M. Cuffiani, S. Dado, G. M. Dallavalle, S. De Jong, L. A. del Pozo, H. Deng, A. Dieckmann, M. Dittmar, M. S. Dixit, E. do Couto e Silva, J. E. Duboscq, E. Duchovni, G. Duckeck, I. P. Duerdoth, D. J.P. Dumas, P. A. Elcombe, P. G. Estabrooks, E. Etzion, H. G. Evans, F. Fabbri, B. Fabbro, M. Fierro, M. Fincke-Keeler, H. M. Fischer, D. G. Fong, M. Foucher, A. Gaidot, J. W. Gary, J. Gascon, N. I. Geddes, C. Geich-Gimbel, S. W. Gensler, F. X. Gentit, G. Giacomelli, R. Giacomelli, V. Gibson, W. R. Gibson, J. D. Gillies, J. Goldberg, D. M. Gingrich, M. J. Goodrick, W. Gorn, 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, G. Herten, R. D. Heuer, J. C. Hill, S. J. Hillier, T. Hilse, D. A. Hinshaw, J. D. Hobbs, P. R. Hobson, D. Hochman, R. J. Homer, A. K. Honma, 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. Jones, R. W.L. Jones, P. Jovanovic, C. Jui, D. Karlen, K. Kawagoe, T. Kawamoto, R. K. Keeler, R. G. Kellog, B. W. Kennedy, J. King, S. Kluth, T. Kobayashi, D. S. Koetke, T. P. Kokott, S. Komamiya, J. F. Kral, R. Kowalewski, J. von Krogh, J. Kroll, P. Kyberd, G. D. Lafferty, H. Lafoux, R. Lahmann, J. Lauber, J. G. Layter, P. Leblanc, A. M. Lee, E. Lefebvre, M. H. Lehto, D. Lellouch, C. Leroy, J. Letts, L. Levinson, S. L. Lloyd, F. K. Loebinger, J. M. Lorah, B. Lorazo, M. J. Losty, X. C. Lou, J. Ludwig, A. Luig, M. Mannelli, S. Marcellini, C. Markus, A. J. Martin, T. Mashimo, P. Mättig, U. Maur, J. McKenna, T. J. 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. Morii, U. Müller, B. Nellen, H. H. Nguyen, S. W. O'Neale, F. G. Oakham, F. Odorici, H. O. Ogren, C. J. Oram, M. J. Oreglia, S. Orito, J. P. Pansart, B. Panzer-Steindel, P. Paschievici, G. N. Patrick, N. Paz-Jaoshvili, M. J. Pearce, P. Pfister, J. E. Pilcher, J. Pinfold, D. Pitman, D. E. Plane, P. Poffenberger, B. Poli, T. W. Pritchard, H. Przysiezniak, G. Quast, M. W. Redmond, D. L. Rees, G. E. Richards, M. Rison, 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, M. Sasaki, C. Sbarra, A. D. Schaile, O. Schaile, W. Schappert, F. Scharf, P. Scharff-Hansen, P. Schenk, B. Schmitt, H. von der Schmitt, M. Schröder, C. Schwick, J. Schwiening, W. G. Scott, M. Settles, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. P. Siroli, A. Skillman, A. Skuja, A. M. Smith, T. J. Smith, G. A. Snow, R. Sobie, R. W. Springer, M. Sproston, A. Stahl, C. Stegmann, K. Stephens, J. Steuerer, R. Ströhmer, D. Strom, H. Takeda, T. Takeshita, S. Tarem, M. Tecchio, P. Teixeira-Dias, N. Tesch, M. A. Thomson, E. Torrente-Lujan, S. Towers, G. Transtromer, N. J. Tresilian, T. Tsukamoto, M. F. Turner, D. Van den plas, R. Van Kooten, G. J. VanDalen, G. Vasseur, A. Wagner, D. L. Wagner, C. Wahl, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, M. Weber, P. Weber, P. S. Wells, N. Wermes, M. A. Whalley, B. Wilkens, G. W. Wilson, J. A. Wilson, V. H. Winterer, T. Wlodek, G. Wolf, S. Wotton, T. R. Wyatt, R. Yaari, A. Yeaman, G. Yekutieli, M. Yurko, W. Zeuner, G. T. Zorn

^*Corresponding author for this work

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

15 Citations (Scopus)

Abstract

The average lifetime of baryons containing a b quark has been measured with the OPAL detector using data collected between 1990 and 1992. Semileptonically decaying b-flavoured baryons which produce a Λ are identified through the charge correlation of the λ and lepton. The decay point of the baryon is estimated by the λ-lepton vertex, and the observed distribution of decay lengths is fitted to determine the average lifetime. In the data sample consisting of 261 right-sign and 104 wrong-sign λ-lepton charge combinations, the average b baryon lifetime is found to be τ = 1.05^+0.23 _-0.20±0.08 ps, where the first error is statistical and the second systematic.

Original language	English
Pages (from-to)	435-447
Number of pages	13
Journal	Physics Letters B
Volume	316
Issue number	2-3
DOIs	https://doi.org/10.1016/0370-2693(93)90349-M
Publication status	Published - 1993 Oct 21
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/0370-2693(93)90349-M

Cite this

Akers, R., Alexander, G., Allison, J., Anderson, K. J., Arcelli, S., Astbury, A., Axen, D., Azuelos, G., Baines, J. T. M., Ball, A. H., Banks, J., Barlow, R. J., Barnett, S., Bartoldus, R., Batley, J. R., Beaudoin, G., Beck, A., Beck, G. A., Becker, J., ... Zorn, G. T. (1993). A measurement of the average lifetime of b-flavoured baryons. Physics Letters B, 316(2-3), 435-447. https://doi.org/10.1016/0370-2693(93)90349-M

Akers, R, Alexander, G, Allison, J, Anderson, KJ, Arcelli, S, Astbury, A, Axen, D, Azuelos, G, Baines, JTM, Ball, AH, Banks, J, Barlow, RJ, Barnett, S, Bartoldus, R, Batley, JR, Beaudoin, G, Beck, A, Beck, GA, Becker, J, Beeston, C, Behnke, T, Bell, KW, Bella, G, Bentkowski, P, Berlich, P, Bethke, S, Biebel, O, Bloodworth, IJ, Bock, P, Boden, B, Bosch, HM, Boutemeur, M, Breuker, H, Bright-Thomas, P, Brown, RM, Buijs, A, Burckhart, HJ, Burgard, C, Capiluppi, P, Carnegie, RK, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Chu, SL, Clarke, PEL, Clayton, JC, Cohen, I, Conboy, JE, Cooper, M, Coupland, M, Cuffiani, M, Dado, S, Dallavalle, GM, De Jong, S, del Pozo, LA, Deng, H, Dieckmann, A, Dittmar, M, Dixit, MS, do Couto e Silva, E, Duboscq, JE, Duchovni, E, Duckeck, G, Duerdoth, IP, Dumas, DJP, Elcombe, PA, Estabrooks, PG, Etzion, E, Evans, HG, Fabbri, F, Fabbro, B, Fierro, M, Fincke-Keeler, M, Fischer, HM, Fong, DG, Foucher, M, Gaidot, A, Gary, JW, Gascon, J, Geddes, NI, Geich-Gimbel, C, Gensler, SW, Gentit, FX, Giacomelli, G, Giacomelli, R, Gibson, V, Gibson, WR, Gillies, JD, Goldberg, J, Gingrich, DM, Goodrick, MJ, Gorn, 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, Herten, G, Heuer, RD, Hill, JC, Hillier, SJ, Hilse, T, Hinshaw, DA, Hobbs, JD, Hobson, PR, Hochman, D, Homer, RJ, Honma, AK, Hughes-Jones, RE, Humbert, R, Igo-Kemenes, P, Ihssen, H, Imrie, DC, Janissen, AC, Jawahery, A, Jeffreys, PW, Jeremie, H, Jimack, M, Jones, M, Jones, RWL, Jovanovic, P, Jui, C, Karlen, D, Kawagoe, K, Kawamoto, T, Keeler, RK, Kellog, RG, Kennedy, BW, King, J, Kluth, S, Kobayashi, T, Koetke, DS, Kokott, TP, Komamiya, S, Kral, JF, Kowalewski, R, von Krogh, J, Kroll, J, Kyberd, P, Lafferty, GD, Lafoux, H, Lahmann, R, Lauber, J, Layter, JG, Leblanc, P, Lee, AM, Lefebvre, E, Lehto, MH, Lellouch, D, Leroy, C, Letts, J, Levinson, L, Lloyd, SL, Loebinger, FK, Lorah, JM, Lorazo, B, Losty, MJ, Lou, XC, Ludwig, J, Luig, A, Mannelli, M, Marcellini, S, Markus, C, Martin, AJ, Mashimo, T, Mättig, P, Maur, U, McKenna, J, McMahon, TJ, 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, Morii, M, Müller, U, Nellen, B, Nguyen, HH, O'Neale, SW, Oakham, FG, Odorici, F, Ogren, HO, Oram, CJ, Oreglia, MJ, Orito, S, Pansart, JP, Panzer-Steindel, B, Paschievici, P, Patrick, GN, Paz-Jaoshvili, N, Pearce, MJ, Pfister, P, Pilcher, JE, Pinfold, J, Pitman, D, Plane, DE, Poffenberger, P, Poli, B, Pritchard, TW, Przysiezniak, H, Quast, G, Redmond, MW, Rees, DL, Richards, GE, Rison, M, Robins, SA, Robinson, D, Rollnik, A, Roney, JM, Ros, E, Rossberg, S, Rossi, AM, Rosvick, M, Routenburg, P, Runge, K, Runolfsson, O, Rust, DR, Sasaki, M, Sbarra, C, Schaile, AD, Schaile, O, Schappert, W, Scharf, F, Scharff-Hansen, P, Schenk, P, Schmitt, B, von der Schmitt, H, Schröder, M, Schwick, C, Schwiening, J, Scott, WG, Settles, M, Shears, TG, Shen, BC, Shepherd-Themistocleous, CH, Sherwood, P, Siroli, GP, Skillman, A, Skuja, A, Smith, AM, Smith, TJ, Snow, GA, Sobie, R, Springer, RW, Sproston, M, Stahl, A, Stegmann, C, Stephens, K, Steuerer, J, Ströhmer, R, Strom, D, Takeda, H, Takeshita, T, Tarem, S, Tecchio, M, Teixeira-Dias, P, Tesch, N, Thomson, MA, Torrente-Lujan, E, Towers, S, Transtromer, G, Tresilian, NJ, Tsukamoto, T, Turner, MF, Van den plas, D, Van Kooten, R, VanDalen, GJ, Vasseur, G, Wagner, A, Wagner, DL, Wahl, C, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Weber, M, Weber, P, Wells, PS, Wermes, N, Whalley, MA, Wilkens, B, Wilson, GW, Wilson, JA, Winterer, VH, Wlodek, T, Wolf, G, Wotton, S, Wyatt, TR, Yaari, R, Yeaman, A, Yekutieli, G, Yurko, M, Zeuner, W & Zorn, GT 1993, 'A measurement of the average lifetime of b-flavoured baryons', Physics Letters B, vol. 316, no. 2-3, pp. 435-447. https://doi.org/10.1016/0370-2693(93)90349-M

@article{0eea1fba92074269938427808b2b9f30,

title = "A measurement of the average lifetime of b-flavoured baryons",

abstract = "The average lifetime of baryons containing a b quark has been measured with the OPAL detector using data collected between 1990 and 1992. Semileptonically decaying b-flavoured baryons which produce a Λ are identified through the charge correlation of the λ and lepton. The decay point of the baryon is estimated by the λ-lepton vertex, and the observed distribution of decay lengths is fitted to determine the average lifetime. In the data sample consisting of 261 right-sign and 104 wrong-sign λ-lepton charge combinations, the average b baryon lifetime is found to be τ = 1.05+0.23 -0.20±0.08 ps, where the first error is statistical and the second systematic.",

author = "R. Akers and G. Alexander and J. Allison and Anderson, {K. J.} and S. Arcelli and A. Astbury and D. Axen and G. Azuelos and Baines, {J. T.M.} and Ball, {A. H.} and J. Banks and Barlow, {R. J.} and S. Barnett and R. Bartoldus and Batley, {J. R.} and G. Beaudoin and A. Beck and Beck, {G. A.} and J. Becker and C. Beeston and T. Behnke and Bell, {K. W.} and G. Bella and P. Bentkowski and P. Berlich and S. Bethke and O. Biebel and Bloodworth, {I. J.} and P. Bock and B. Boden and Bosch, {H. M.} and M. Boutemeur and H. Breuker and P. Bright-Thomas and Brown, {R. M.} and A. Buijs and Burckhart, {H. J.} and C. Burgard and P. Capiluppi and Carnegie, {R. K.} and Carter, {A. A.} and Carter, {J. R.} and Chang, {C. Y.} and Charlton, {D. G.} and Chu, {S. L.} and Clarke, {P. E.L.} and Clayton, {J. C.} and I. Cohen and Conboy, {J. E.} and M. Cooper and M. Coupland and M. Cuffiani and S. Dado and Dallavalle, {G. M.} and {De Jong}, S. and {del Pozo}, {L. A.} and H. Deng and A. Dieckmann and M. Dittmar and Dixit, {M. S.} and {do Couto e Silva}, E. and Duboscq, {J. 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 B. Fabbro and M. Fierro and M. Fincke-Keeler and Fischer, {H. M.} and Fong, {D. G.} and M. Foucher and A. Gaidot and Gary, {J. W.} and J. Gascon and Geddes, {N. I.} and C. Geich-Gimbel and Gensler, {S. W.} and Gentit, {F. X.} and G. Giacomelli and R. Giacomelli and V. Gibson and Gibson, {W. R.} and Gillies, {J. D.} and J. Goldberg and Gingrich, {D. M.} and Goodrick, {M. J.} and W. Gorn 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 G. Herten and Heuer, {R. D.} and Hill, {J. C.} and Hillier, {S. J.} and T. Hilse and Hinshaw, {D. A.} and Hobbs, {J. D.} and Hobson, {P. R.} and D. Hochman and Homer, {R. J.} and Honma, {A. K.} 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. Jones and Jones, {R. W.L.} and P. Jovanovic and C. Jui and D. Karlen and K. Kawagoe and T. Kawamoto and Keeler, {R. K.} and Kellog, {R. G.} and Kennedy, {B. W.} and J. King and S. Kluth and T. Kobayashi and Koetke, {D. S.} and Kokott, {T. P.} and S. Komamiya and Kral, {J. F.} and R. Kowalewski and {von Krogh}, J. and J. Kroll and P. Kyberd and Lafferty, {G. D.} and H. Lafoux and R. Lahmann and J. Lauber and Layter, {J. G.} and P. Leblanc and Lee, {A. M.} and E. Lefebvre and Lehto, {M. H.} and D. Lellouch and C. Leroy and J. Letts 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 A. Luig and M. Mannelli and S. Marcellini and C. Markus and Martin, {A. J.} and T. Mashimo and P. M{\"a}ttig and U. Maur and J. McKenna and McMahon, {T. J.} 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 M. Morii and U. M{\"u}ller and B. Nellen and Nguyen, {H. H.} and O'Neale, {S. W.} and Oakham, {F. G.} and F. Odorici and Ogren, {H. O.} 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 N. Paz-Jaoshvili and Pearce, {M. J.} and P. Pfister and Pilcher, {J. E.} and J. Pinfold and D. Pitman and Plane, {D. E.} and P. Poffenberger and B. Poli and Pritchard, {T. W.} and H. Przysiezniak and G. Quast and Redmond, {M. W.} and Rees, {D. L.} and Richards, {G. E.} and M. Rison 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 M. Sasaki and C. Sbarra and Schaile, {A. D.} and O. Schaile and W. Schappert and F. Scharf and P. Scharff-Hansen and P. Schenk and B. Schmitt and {von der Schmitt}, H. and M. Schr{\"o}der and C. Schwick and J. Schwiening and Scott, {W. G.} and M. Settles and Shears, {T. G.} and Shen, {B. C.} and Shepherd-Themistocleous, {C. H.} and P. Sherwood and Siroli, {G. P.} and A. Skillman 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 A. Stahl and C. Stegmann and K. Stephens and J. Steuerer and R. Str{\"o}hmer and D. Strom and H. Takeda and T. Takeshita and S. Tarem and M. Tecchio and P. Teixeira-Dias and N. Tesch and Thomson, {M. A.} and E. Torrente-Lujan and S. Towers and G. Transtromer and Tresilian, {N. J.} and T. Tsukamoto and Turner, {M. F.} and {Van den plas}, D. and {Van Kooten}, R. and VanDalen, {G. J.} and G. Vasseur and A. Wagner and Wagner, {D. L.} and C. Wahl 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 Wells, {P. S.} and N. Wermes and Whalley, {M. A.} and B. Wilkens and Wilson, {G. W.} and Wilson, {J. A.} and Winterer, {V. H.} and T. Wlodek and G. Wolf and S. Wotton and Wyatt, {T. R.} and R. Yaari and A. Yeaman and G. Yekutieli and M. Yurko and W. Zeuner and Zorn, {G. T.}",

note = "Funding Information: It is a pleasure to thank the SL Division for the efficient operation of the LEP accelerator and their continuing close cooperation with our experimental group. In addition to the support staff at our own institutions we are pleased to acknowledge the Department of Energy, USA, National Science Foundation, USA, Texas National Research Laboratory Commission, USA, Science and Engineering Research Council, UK, Natural Sciences and Engineering Research Council, Canada, Fussefeld Foundation, Israeli Ministry of Energy and Ministry of Science, Minerva Gesellschaft, Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International Science Research Program, German Israeli Bi-national Science Foundation (GIF), Direction des Sciences de la Mati~re du Commissariat h l'Energie Atomique, France, Bundesministerium t'fir Forschung und Technologie, Germany, National Research Council of Canada, A.P. Sloan Foundation and Junta Nacional de Investigag~o Cient{fica e Tecnol6gica, Portugal.",

year = "1993",

month = oct,

day = "21",

doi = "10.1016/0370-2693(93)90349-M",

language = "English",

volume = "316",

pages = "435--447",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "2-3",

}

TY - JOUR

T1 - A measurement of the average lifetime of b-flavoured baryons

AU - Akers, R.

AU - Alexander, G.

AU - Allison, J.

AU - Anderson, K. J.

AU - Arcelli, S.

AU - Astbury, A.

AU - Axen, D.

AU - Azuelos, G.

AU - Baines, J. T.M.

AU - Ball, A. H.

AU - Banks, J.

AU - Barlow, R. J.

AU - Barnett, S.

AU - Bartoldus, R.

AU - Batley, J. R.

AU - Beaudoin, G.

AU - Beck, A.

AU - Beck, G. A.

AU - Becker, J.

AU - Beeston, C.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Bentkowski, P.

AU - Berlich, P.

AU - Bethke, S.

AU - Biebel, O.

AU - Bloodworth, I. J.

AU - Bock, P.

AU - Boden, B.

AU - Bosch, H. M.

AU - Boutemeur, M.

AU - Breuker, H.

AU - Bright-Thomas, P.

AU - Brown, R. M.

AU - Buijs, A.

AU - Burckhart, H. J.

AU - Burgard, C.

AU - Capiluppi, P.

AU - Carnegie, R. K.

AU - Carter, A. A.

AU - Carter, J. R.

AU - Chang, C. Y.

AU - Charlton, D. G.

AU - Chu, S. L.

AU - Clarke, P. E.L.

AU - Clayton, J. C.

AU - Cohen, I.

AU - Conboy, J. E.

AU - Cooper, M.

AU - Coupland, M.

AU - Cuffiani, M.

AU - Dado, S.

AU - Dallavalle, G. M.

AU - De Jong, S.

AU - del Pozo, L. A.

AU - Deng, H.

AU - Dieckmann, A.

AU - Dittmar, M.

AU - Dixit, M. S.

AU - do Couto e Silva, E.

AU - Duboscq, J. 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 - Fabbro, B.

AU - Fierro, M.

AU - Fincke-Keeler, M.

AU - Fischer, H. M.

AU - Fong, D. G.

AU - Foucher, M.

AU - Gaidot, A.

AU - Gary, J. W.

AU - Gascon, J.

AU - Geddes, N. I.

AU - Geich-Gimbel, C.

AU - Gensler, S. W.

AU - Gentit, F. X.

AU - Giacomelli, G.

AU - Giacomelli, R.

AU - Gibson, V.

AU - Gibson, W. R.

AU - Gillies, J. D.

AU - Goldberg, J.

AU - Gingrich, D. M.

AU - Goodrick, M. J.

AU - Gorn, 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 - Herten, G.

AU - Heuer, R. D.

AU - Hill, J. C.

AU - Hillier, S. J.

AU - Hilse, T.

AU - Hinshaw, D. A.

AU - Hobbs, J. D.

AU - Hobson, P. R.

AU - Hochman, D.

AU - Homer, R. J.

AU - Honma, A. K.

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 - Jones, M.

AU - Jones, R. W.L.

AU - Jovanovic, P.

AU - Jui, C.

AU - Karlen, D.

AU - Kawagoe, K.

AU - Kawamoto, T.

AU - Keeler, R. K.

AU - Kellog, R. G.

AU - Kennedy, B. W.

AU - King, J.

AU - Kluth, S.

AU - Kobayashi, T.

AU - Koetke, D. S.

AU - Kokott, T. P.

AU - Komamiya, S.

AU - Kral, J. F.

AU - Kowalewski, R.

AU - von Krogh, J.

AU - Kroll, J.

AU - Kyberd, P.

AU - Lafferty, G. D.

AU - Lafoux, H.

AU - Lahmann, R.

AU - Lauber, J.

AU - Layter, J. G.

AU - Leblanc, P.

AU - Lee, A. M.

AU - Lefebvre, E.

AU - Lehto, M. H.

AU - Lellouch, D.

AU - Leroy, C.

AU - Letts, J.

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 - Luig, A.

AU - Mannelli, M.

AU - Marcellini, S.

AU - Markus, C.

AU - Martin, A. J.

AU - Mashimo, T.

AU - Mättig, P.

AU - Maur, U.

AU - McKenna, J.

AU - McMahon, T. J.

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 - Morii, M.

AU - Müller, U.

AU - Nellen, B.

AU - Nguyen, H. H.

AU - O'Neale, S. W.

AU - Oakham, F. G.

AU - Odorici, F.

AU - Ogren, H. O.

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 - Paz-Jaoshvili, N.

AU - Pearce, M. J.

AU - Pfister, P.

AU - Pilcher, J. E.

AU - Pinfold, J.

AU - Pitman, D.

AU - Plane, D. E.

AU - Poffenberger, P.

AU - Poli, B.

AU - Pritchard, T. W.

AU - Przysiezniak, H.

AU - Quast, G.

AU - Redmond, M. W.

AU - Rees, D. L.

AU - Richards, G. E.

AU - Rison, M.

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 - Sasaki, M.

AU - Sbarra, C.

AU - Schaile, A. D.

AU - Schaile, O.

AU - Schappert, W.

AU - Scharf, F.

AU - Scharff-Hansen, P.

AU - Schenk, P.

AU - Schmitt, B.

AU - von der Schmitt, H.

AU - Schröder, M.

AU - Schwick, C.

AU - Schwiening, J.

AU - Scott, W. G.

AU - Settles, M.

AU - Shears, T. G.

AU - Shen, B. C.

AU - Shepherd-Themistocleous, C. H.

AU - Sherwood, P.

AU - Siroli, G. P.

AU - Skillman, A.

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 - Stahl, A.

AU - Stegmann, C.

AU - Stephens, K.

AU - Steuerer, J.

AU - Ströhmer, R.

AU - Strom, D.

AU - Takeda, H.

AU - Takeshita, T.

AU - Tarem, S.

AU - Tecchio, M.

AU - Teixeira-Dias, P.

AU - Tesch, N.

AU - Thomson, M. A.

AU - Torrente-Lujan, E.

AU - Towers, S.

AU - Transtromer, G.

AU - Tresilian, N. J.

AU - Tsukamoto, T.

AU - Turner, M. F.

AU - Van den plas, D.

AU - Van Kooten, R.

AU - VanDalen, G. J.

AU - Vasseur, G.

AU - Wagner, A.

AU - Wagner, D. L.

AU - Wahl, C.

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 - Wells, P. S.

AU - Wermes, N.

AU - Whalley, M. A.

AU - Wilkens, B.

AU - Wilson, G. W.

AU - Wilson, J. A.

AU - Winterer, V. H.

AU - Wlodek, T.

AU - Wolf, G.

AU - Wotton, S.

AU - Wyatt, T. R.

AU - Yaari, R.

AU - Yeaman, A.

AU - Yekutieli, G.

AU - Yurko, M.

AU - Zeuner, W.

AU - Zorn, G. T.

N1 - Funding Information: It is a pleasure to thank the SL Division for the efficient operation of the LEP accelerator and their continuing close cooperation with our experimental group. In addition to the support staff at our own institutions we are pleased to acknowledge the Department of Energy, USA, National Science Foundation, USA, Texas National Research Laboratory Commission, USA, Science and Engineering Research Council, UK, Natural Sciences and Engineering Research Council, Canada, Fussefeld Foundation, Israeli Ministry of Energy and Ministry of Science, Minerva Gesellschaft, Japanese Ministry of Education, Science and Culture (the Monbusho) and a grant under the Monbusho International Science Research Program, German Israeli Bi-national Science Foundation (GIF), Direction des Sciences de la Mati~re du Commissariat h l'Energie Atomique, France, Bundesministerium t'fir Forschung und Technologie, Germany, National Research Council of Canada, A.P. Sloan Foundation and Junta Nacional de Investigag~o Cient{fica e Tecnol6gica, Portugal.

PY - 1993/10/21

Y1 - 1993/10/21

N2 - The average lifetime of baryons containing a b quark has been measured with the OPAL detector using data collected between 1990 and 1992. Semileptonically decaying b-flavoured baryons which produce a Λ are identified through the charge correlation of the λ and lepton. The decay point of the baryon is estimated by the λ-lepton vertex, and the observed distribution of decay lengths is fitted to determine the average lifetime. In the data sample consisting of 261 right-sign and 104 wrong-sign λ-lepton charge combinations, the average b baryon lifetime is found to be τ = 1.05+0.23 -0.20±0.08 ps, where the first error is statistical and the second systematic.

AB - The average lifetime of baryons containing a b quark has been measured with the OPAL detector using data collected between 1990 and 1992. Semileptonically decaying b-flavoured baryons which produce a Λ are identified through the charge correlation of the λ and lepton. The decay point of the baryon is estimated by the λ-lepton vertex, and the observed distribution of decay lengths is fitted to determine the average lifetime. In the data sample consisting of 261 right-sign and 104 wrong-sign λ-lepton charge combinations, the average b baryon lifetime is found to be τ = 1.05+0.23 -0.20±0.08 ps, where the first error is statistical and the second systematic.

UR - http://www.scopus.com/inward/record.url?scp=0010945726&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0010945726&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(93)90349-M

DO - 10.1016/0370-2693(93)90349-M

M3 - Article

AN - SCOPUS:0010945726

SN - 0370-2693

VL - 316

SP - 435

EP - 447

JO - Physics Letters B

JF - Physics Letters B

IS - 2-3

ER -

A measurement of the average lifetime of b-flavoured baryons

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