A measurement of the average lifetime of b-flavoured baryons

Akers, R; Allison, J; Baines, JTM; Banks, J; Barlow, RJ; Barnett, S; Beeston, C; Duerdoth, IP; Hughes-Jones, RE; Lafferty, GD; Loebinger, FK; Bella, G; Weber, M; Maur, U; Dittmar, M; Springer, RW; Hattersley, PM; Etzion, E; Hemingway, RJ; Settles, M; Gibson, WR; Kokott, TP; Mikenberg, G; Dixit, MS; Rees, DL; Gingrich, DM; Harrison, PF; Hansroul, M; Hart, J; Schenk, P; Schwick, C; Hauschild, M; Markus, C; Lehto, MH; Routenburg, P; Carter, JR; Azuelos, G; Hawkes, CM; Hagemann, J; Rossi, AM; Heuer, RD; De Jong, S; Shen, BC; Skillman, A; O'Neale, SW; Heflin, E; Lafoux, H; Pinfold, J; Paschievici, P; Carnegie, RK; Sasaki, M; Buijs, A; Robinson, D; Anderson, KJ; Bethke, S; Ros, E; Takeda, H; Yeaman, A; Ball, AH; Runolfsson, O; Charlton, DG; Mättig, P; Scharff-Hansen, P; Schaile, O; Kowalewski, R; Morii, M; Wagner, DL; Batley, JR; Gary, JW; Del Pozo, LA; Redmond, MW; Nguyen, HH; Siroli, GP; Dumas, DJP; Zorn, GT; Estabrooks, PG; Nellen, B; Carter, AA; Scharf, F; Geddes, NI; Rollnik, A; Roney, JM; Pritchard, TW; Vandalen, GJ; Oram, CJ; Bentkowski, P; Schmitt, B; Rison, M; Gorn, W; Runge, K; Wilson, JA; Duckeck, G; Stephens, K; Winterer, V-H; Leblanc, P; Chang, CY; King, J; Wilson, GW; Brown, RM; Panzer-Steindel, B; Schwiening, J; Clarke, PEL; Bloodworth, IJ; Takeshita, T; Igo-Kemenes, P; Miller, DJ; Tesch, N; Mashimo, T; McKenna, J; Jones, RWL; Gascon, J; Honma, AK; Wolf, G; Deng, H; Koetke, DS; Do Couto E Silva, E; Hanson, GG; Cuffiani, M; Transtromer, G; Lou, XC; Marcellini, S; Foucher, M; Watson, AT; Wahl, C; Mir, R; Imrie, DC; Kyberd, P; Ogren, HO; Hobbs, JD; Dallavalle, GM; Dado, S; Strom, D; Yurko, M; Fong, DG; Hinshaw, DA; Kawamoto, T; Bartoldus, R; Mes, H; Pilcher, JE; Wermes, N; Yaari, R; Biebel, O; Meijers, F; Jeffreys, PW; Yekutieli, G; Oakham, FG; Wotton, S; Fabbro, B; Turner, MF; Hochman, D; Kluth, S; Watkins, PM; Tsukamoto, T; Whalley, MA; Wlodek, T; Gibson, V; Martin, AJ; Kobayashi, T; Ihssen, H; Komamiya, S; Hillier, SJ; Jimack, M; Janissen, AC; Homer, RJ; Humbert, R; Mannelli, M; Fabbri, F; Herten, G; Wilkens, B; Jovanovic, P; Lee, AM; Smith, AM; Hargrove, CK; Jui, C; Müller, U; Bright-Thomas, P; Quast, G; Middleton, RP; Kral, JF; Fierro, M; Schaile, AD; McMahon, TJ; Giacomelli, G; Kennedy, BW; Boden, B; Layter, JG; Montanari, A; Cohen, I; Skuja, A; Stegmann, C; Behnke, T; Becker, J; Leroy, C; Patrick, GN; Oreglia, MJ; Rosvick, M; Smith, TJ; Robins, SA; Kawagoe, K; Sobie, R; Sproston, M; Coupland, M; Wells, PS; Steuerer, J; Tecchio, M; Paz-Jaoshvili, N; Towers, S; Schröder, M; Shears, TG; Sbarra, C; Gillies, JD; Scott, WG; Burgard, C; Kellogg, RG; Von Krogh, J; Pitman, D; Grant, FC; Pearce, MJ; Lorazo, B; Menszner, D; Mildenberger, J; Martin, JP; Poffenberger, P; Conboy, JE; Moisan, C; Gentit, FX; Beaudoin, G; Duboscq, JE; Torrente-Lujan, E; Fischer, HM; Lefebvre, E; Breuker, H; Lauber, J; Lahmann, R; Letts, J; Lorah, JM; Rust, DR; Merritt, FS; Mori, T; Sherwood, P; Levinson, L; Ward, CP; Plane, DE; Zeuner, W; Thomson, MA; Geich-Gimbel, C; Gaidot, A; Keeler, RK; OPAL Collaboration; Clayton, JC; McNutt, JR; Gensler, SW; Duchovni, E; Ward, DR; Jeremie, H; Cooper, M; Beck, GA; Grandi, C; Von Der Schmitt, H; Arcelli, S; Stahl, A; Dieckmann, A; Watson, NK; Hobson, PR; Michelini, A; Van Kooten, R; Schappert, W; Goodrick, MJ; Ludwig, J; Luig, A; Jawahery, A; Mohr, W; Chu, SL; Fincke-Keeler, M; Pansart, JP; Pfister, P; Hill, JC; Richards, GE; Rossberg, S; Jones, M; Lloyd, SL; Karlen, D; Weber, P; Evans, HG; Bock, P; Kroll, J; Hilse, T; Burckhart, HJ; Goldberg, J; Wagner, A; Orito, S; Bell, KW; Tresilian, NJ; Giacomelli, R; Alexander, G; Van Den Plas, D; Wyatt, TR; Shepherd-Themistocleous, CH; Astbury, A; Ströhmer, R; Losty, MJ; Lellouch, D; Beck, A; Capiluppi, P; Bosch, HM; Axen, D; Elcombe, PA; Snow, GA; Odorici, F; Boutemeur, M; Tarem, S; Vasseur, G; Poli, B; Teixeira-Dias, P; Przysiezniak, H; Berlich, P

Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/9607

Title:	A measurement of the average lifetime of b-flavoured baryons
Authors:	Akers, R Allison, J Baines, JTM Banks, J Barlow, RJ Barnett, S Beeston, C Duerdoth, IP Hughes-Jones, RE Lafferty, GD Loebinger, FK Bella, G Weber, M Maur, U Dittmar, M Springer, RW Hattersley, PM Etzion, E Hemingway, RJ Settles, M Gibson, WR Kokott, TP Mikenberg, G Dixit, MS Rees, DL Gingrich, DM Harrison, PF Hansroul, M Hart, J Schenk, P Schwick, C Hauschild, M Markus, C Lehto, MH Routenburg, P Carter, JR Azuelos, G Hawkes, CM Hagemann, J Rossi, AM Heuer, RD De Jong, S Shen, BC Skillman, A O'Neale, SW Heflin, E Lafoux, H Pinfold, J Paschievici, P Carnegie, RK Sasaki, M Buijs, A Robinson, D Anderson, KJ Bethke, S Ros, E Takeda, H Yeaman, A Ball, AH Runolfsson, O Charlton, DG Mättig, P Scharff-Hansen, P Schaile, O Kowalewski, R Morii, M Wagner, DL Batley, JR Gary, JW Del Pozo, LA Redmond, MW Nguyen, HH Siroli, GP Dumas, DJP Zorn, GT Estabrooks, PG Nellen, B Carter, AA Scharf, F Geddes, NI Rollnik, A Roney, JM Pritchard, TW Vandalen, GJ Oram, CJ Bentkowski, P Schmitt, B Rison, M Gorn, W Runge, K Wilson, JA Duckeck, G Stephens, K Winterer, V-H Leblanc, P Chang, CY King, J Wilson, GW Brown, RM Panzer-Steindel, B Schwiening, J Clarke, PEL Bloodworth, IJ Takeshita, T Igo-Kemenes, P Miller, DJ Tesch, N Mashimo, T McKenna, J Jones, RWL Gascon, J Honma, AK Wolf, G Deng, H Koetke, DS Do Couto E Silva, E Hanson, GG Cuffiani, M Transtromer, G Lou, XC Marcellini, S Foucher, M Watson, AT Wahl, C Mir, R Imrie, DC Kyberd, P Ogren, HO Hobbs, JD Dallavalle, GM Dado, S Strom, D Yurko, M Fong, DG Hinshaw, DA Kawamoto, T Bartoldus, R Mes, H Pilcher, JE Wermes, N Yaari, R Biebel, O Meijers, F Jeffreys, PW Yekutieli, G Oakham, FG Wotton, S Fabbro, B Turner, MF Hochman, D Kluth, S Watkins, PM Tsukamoto, T Whalley, MA Wlodek, T Gibson, V Martin, AJ Kobayashi, T Ihssen, H Komamiya, S Hillier, SJ Jimack, M Janissen, AC Homer, RJ Humbert, R Mannelli, M Fabbri, F Herten, G Wilkens, B Jovanovic, P Lee, AM Smith, AM Hargrove, CK Jui, C Müller, U Bright-Thomas, P Quast, G Middleton, RP Kral, JF Fierro, M Schaile, AD McMahon, TJ Giacomelli, G Kennedy, BW Boden, B Layter, JG Montanari, A Cohen, I Skuja, A Stegmann, C Behnke, T Becker, J Leroy, C Patrick, GN Oreglia, MJ Rosvick, M Smith, TJ Robins, SA Kawagoe, K Sobie, R Sproston, M Coupland, M Wells, PS Steuerer, J Tecchio, M Paz-Jaoshvili, N Towers, S Schröder, M Shears, TG Sbarra, C Gillies, JD Scott, WG Burgard, C Kellogg, RG Von Krogh, J Pitman, D Grant, FC Pearce, MJ Lorazo, B Menszner, D Mildenberger, J Martin, JP Poffenberger, P Conboy, JE Moisan, C Gentit, FX Beaudoin, G Duboscq, JE Torrente-Lujan, E Fischer, HM Lefebvre, E Breuker, H Lauber, J Lahmann, R Letts, J Lorah, JM Rust, DR Merritt, FS Mori, T Sherwood, P Levinson, L Ward, CP Plane, DE Zeuner, W Thomson, MA Geich-Gimbel, C Gaidot, A Keeler, RK OPAL Collaboration Clayton, JC McNutt, JR Gensler, SW Duchovni, E Ward, DR Jeremie, H Cooper, M Beck, GA Grandi, C Von Der Schmitt, H Arcelli, S Stahl, A Dieckmann, A Watson, NK Hobson, PR Michelini, A Van Kooten, R Schappert, W Goodrick, MJ Ludwig, J Luig, A Jawahery, A Mohr, W Chu, SL Fincke-Keeler, M Pansart, JP Pfister, P Hill, JC Richards, GE Rossberg, S Jones, M Lloyd, SL Karlen, D Weber, P Evans, HG Bock, P Kroll, J Hilse, T Burckhart, HJ Goldberg, J Wagner, A Orito, S Bell, KW Tresilian, NJ Giacomelli, R Alexander, G Van Den Plas, D Wyatt, TR Shepherd-Themistocleous, CH Astbury, A Ströhmer, R Losty, MJ Lellouch, D Beck, A Capiluppi, P Bosch, HM Axen, D Elcombe, PA Snow, GA Odorici, F Boutemeur, M Tarem, S Vasseur, G Poli, B Teixeira-Dias, P Przysiezniak, H Berlich, P
Keywords:	OPAL detector;Monte Carlo event samples;Decay length
Issue Date:	1993
Citation:	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1993, 316 (2-3), pp. 435 - 447
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 b 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 ± 0.08 ps, where the first error is statistical and the second systematic.
URI:	http://bura.brunel.ac.uk/handle/2438/9607
DOI:	http://dx.doi.org/10.1016/0370-2693(93)90349-M
ISSN:	0370-2693
Appears in Collections:	Dept of Electronic and Electrical Engineering Research Papers

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