Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices

G. Abbiendi, K. Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K. J. Anderson, S. Anderson, S. Arcelli, S. Asai, S. F. Ashby, D. Axen, G. Azuelos, A. H. Ball, E. Barberio, R. J. Barlow, R. Bartoldus, J. R. Batley, S. Baumann, J. Bechtluft, T. BehnkeK. W. Bell, G. Bella, A. Bellerive, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, S. D. Bird, V. Blobel, I. J. Bloodworth, P. Bock, J. Böhme, D. Bonacorsi, M. Boutemeur, S. Braibant, P. Bright-Thomas, L. Brigliadori, R. M. Brown, H. J. Burckhart, P. Capiluppi, R. K. Carnegie, A. A. Carter, J. R. Carter, C. Y. Chang, D. G. Charlton, D. Chrisman, C. Ciocca, P. E.L. Clarke, E. Clay, I. Cohen, J. E. Conboy, O. C. Cooke, C. Couyoumtzelis, R. L. Coxe, M. Cuffiani, S. Dado, G. M. Dallavalle, R. Davis, S. De Jong, A. de Roeck, P. Dervan, K. Desch, B. Dienes, M. S. Dixit, J. Dubbert, E. Duchovni, G. Duckeck, I. P. Duerdoth, D. Eatough, P. G. Estabrooks, E. Etzion, F. Fabbri, M. Fanti, A. A. Faust, F. Fiedler, M. Fierro, I. Fleck, R. Folman, A. Fürtjes, D. I. Futyan, P. Gagnon, J. W. Gary, J. Gascon, S. M. Gascon-Shotkin, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, V. Gibson, W. R. Gibson, D. M. Gingrich, D. Glenzinski, J. Goldberg, W. Gorn, C. Grandi, K. Graham, E. Gross, J. Grunhaus, M. Gruwé, G. G. Hanson, M. Hansroul, M. Hapke, K. Harder, A. Harel, C. K. Hargrove, C. Hartmann, M. Hauschild, C. M. Hawkes, R. Hawkings, R. J. Hemingway, M. Herndon, G. Herten, R. D. Heuer, M. D. Hildreth, J. C. Hill, P. R. Hobson, M. Hoch, A. Hocker, K. Hoffman, R. J. Homer, A. K. Honma, D. Horváth, K. R. Hossain, R. Howard, P. Hüntemeyer, P. Igo-Kemenes, D. C. Imrie, K. Ishii, F. R. Jacob, A. Jawahery, H. Jeremie, M. Jimack, C. R. Jones, P. Jovanovic, T. R. Junk, D. Karlen, V. Kartvelishvili, Kiyotomo Kawagoe, T. Kawamoto, P. I. Kayal, R. K. Keeler, R. G. Kellogg, B. W. Kennedy, D. H. Kim, A. Klier, S. Kluth, T. Kobayashi, D. S. Koetke, T. P. Kokott, M. Kolrep, S. Komamiya, R. V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, T. Kuhl, P. Kyberd, G. D. Lafferty, H. Landsman, D. Lanske, J. Lauber, S. R. Lautenschlager, I. Lawson, J. G. Layter, D. Lazic, A. M. Lee, D. Lellouch, J. Letts, L. Levinson, R. Liebisch, B. List, C. Littlewood, A. W. Lloyd, S. L. Lloyd, F. K. Loebinger, G. D. Long, M. J. Losty, J. Ludwig, D. Liu, A. Macchiolo, A. Macpherson, W. Mader, M. Mannelli, S. Marcellini, C. Markopoulos, A. J. Martin, J. P. Martin, G. Martinez, T. Mashimo, P. Mättig, W. J. McDonald, J. McKenna, E. A. Mckigney, T. J. McMahon, R. A. McPherson, F. Meijers, S. Menke, F. S. Merritt, H. Mes, J. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D. J. Miller, R. Mir, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H. A. Neal, B. Nellen, R. Nisius, S. W. O'Neale, F. G. Oakham, F. Odorici, H. O. Ogren, M. J. Oreglia, S. Orito, J. Pálinkás, G. Pásztor, J. R. Pater, G. N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J. E. Pilcher, J. Pinfold, D. E. Plane, P. Poffenberger, J. Polok, M. Przybycień, C. Rembser, H. Rick, S. Robertson, S. A. Robins, N. Rodning, J. M. Roney, K. Roscoe, A. M. Rossi, Y. Rozen, K. Runge, O. Runolfsson, D. R. Rust, K. Sachs, T. Saeki, O. Sahr, W. M. Sang, E. K.G. Sarkisyan, C. Sbarra, A. D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, J. Schieck, B. Schmitt, S. Schmitt, A. Schöning, M. Schröder, M. Schumacher, C. Schwick, W. G. Scott, R. Seuster, T. G. Shears, B. C. Shen, C. H. Shepherd-Themistocleous, P. Sherwood, G. P. Siroli, A. Sittler, A. Skuja, A. M. Smith, G. A. Snow, R. Sobie, S. Söldner-Rembold, S. Spagnolo, M. Sproston, A. Stahl, K. Stephens, J. Steuerer, K. Stoll, D. Strom, R. Strohmer, B. Surrow, S. D. Talbot, S. Tanaka, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, J. Thomas, M. A. Thomson, E. von Törne, E. Torrence, S. Towers, I. Trigger, Z. Trácsányi, E. Tsur, A. S. Turcot, M. F. Turner-Watson, I. Ueda, R. Van Kooten, P. Vannerem, M. Verzocchi, H. Voss, F. Wäckerle, A. Wagner, C. P. Ward, D. R. Ward, P. M. Watkins, A. T. Watson, N. K. Watson, P. S. Wells, N. Wermes, J. S. White, G. W. Wilson, J. A. Wilson, T. R. Wyatt, S. Yamashita, G. Yekutieli, V. Zacek, D. Zer-Zion

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The lifetimes of the B+ and B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0 decays recorded at LEP. Z0 → bb̄ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results are τΒ+ = 1.643 ± 0.037 ± 0.025 ps τΒ0 = 1.523 ± 0.057 ± 0.053 ps τΒ+/τΒ0 = 1.079 ± 0.064 ± 0.041, where in each case the first error is statistical and the second systematic. A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b hadron decays. No evidence for such effects is seen. The CP violation parameter Re(∈Β) is measured to be Re(∈Β) = 0.001 ± 0.014 ± 0.003 and the fractional difference between b and b̄ hadron lifetimes is measured to be (Δτ/τ)b ≡ τ(b hadron) - τ(b̄ hadron)/τ(average) = -0.001 ± 0.012 ± 0.008.

Original languageEnglish
Pages (from-to)609-626
Number of pages18
JournalEuropean Physical Journal C
Volume12
Issue number4
Publication statusPublished - Jan 1 2000

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Momentum
apexes
life (durability)
Electrons
decay
Experiments
CP violation
muons
mesons
momentum
electrons

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Abbiendi, G., Ackerstaff, K., Alexander, G., Allison, J., Altekamp, N., Anderson, K. J., ... Zer-Zion, D. (2000). Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. European Physical Journal C, 12(4), 609-626.

Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. / Abbiendi, G.; Ackerstaff, K.; Alexander, G.; Allison, J.; Altekamp, N.; Anderson, K. J.; Anderson, S.; Arcelli, S.; Asai, S.; Ashby, S. F.; Axen, D.; Azuelos, G.; Ball, A. H.; Barberio, E.; Barlow, R. J.; Bartoldus, R.; Batley, J. R.; Baumann, S.; Bechtluft, J.; Behnke, T.; Bell, K. W.; Bella, G.; Bellerive, A.; Bentvelsen, S.; Bethke, S.; Betts, S.; Biebel, O.; Biguzzi, A.; Bird, S. D.; Blobel, V.; Bloodworth, I. J.; Bock, P.; Böhme, J.; Bonacorsi, D.; Boutemeur, M.; Braibant, S.; Bright-Thomas, P.; Brigliadori, L.; Brown, R. M.; Burckhart, H. J.; Capiluppi, P.; Carnegie, R. K.; Carter, A. A.; Carter, J. R.; Chang, C. Y.; Charlton, D. G.; Chrisman, D.; Ciocca, C.; Clarke, P. E.L.; Clay, E.; Cohen, I.; Conboy, J. E.; Cooke, O. C.; Couyoumtzelis, C.; Coxe, R. L.; Cuffiani, M.; Dado, S.; Dallavalle, G. M.; Davis, R.; De Jong, S.; de Roeck, A.; Dervan, P.; Desch, K.; Dienes, B.; Dixit, M. S.; Dubbert, J.; Duchovni, E.; Duckeck, G.; Duerdoth, I. P.; Eatough, D.; Estabrooks, P. G.; Etzion, E.; Fabbri, F.; Fanti, M.; Faust, A. A.; Fiedler, F.; Fierro, M.; Fleck, I.; Folman, R.; Fürtjes, A.; Futyan, D. I.; Gagnon, P.; Gary, J. W.; Gascon, J.; Gascon-Shotkin, S. M.; Gaycken, G.; Geich-Gimbel, C.; Giacomelli, G.; Giacomelli, P.; Gibson, V.; Gibson, W. R.; Gingrich, D. M.; Glenzinski, D.; Goldberg, J.; Gorn, W.; Grandi, C.; Graham, K.; Gross, E.; Grunhaus, J.; Gruwé, M.; Hanson, G. G.; Hansroul, M.; Hapke, M.; Harder, K.; Harel, A.; Hargrove, C. K.; Hartmann, C.; Hauschild, M.; Hawkes, C. M.; Hawkings, R.; Hemingway, R. J.; Herndon, M.; Herten, G.; Heuer, R. D.; Hildreth, M. D.; Hill, J. C.; Hobson, P. R.; Hoch, M.; Hocker, A.; Hoffman, K.; Homer, R. J.; Honma, A. K.; Horváth, D.; Hossain, K. R.; Howard, R.; Hüntemeyer, P.; Igo-Kemenes, P.; Imrie, D. C.; Ishii, K.; Jacob, F. R.; Jawahery, A.; Jeremie, H.; Jimack, M.; Jones, C. R.; Jovanovic, P.; Junk, T. R.; Karlen, D.; Kartvelishvili, V.; Kawagoe, Kiyotomo; Kawamoto, T.; Kayal, P. I.; Keeler, R. K.; Kellogg, R. G.; Kennedy, B. W.; Kim, D. H.; Klier, A.; Kluth, S.; Kobayashi, T.; Koetke, D. S.; Kokott, T. P.; Kolrep, M.; Komamiya, S.; Kowalewski, R. V.; Kress, T.; Krieger, P.; von Krogh, J.; Kuhl, T.; Kyberd, P.; Lafferty, G. D.; Landsman, H.; Lanske, D.; Lauber, J.; Lautenschlager, S. R.; Lawson, I.; Layter, J. G.; Lazic, D.; Lee, A. M.; Lellouch, D.; Letts, J.; Levinson, L.; Liebisch, R.; List, B.; Littlewood, C.; Lloyd, A. W.; Lloyd, S. L.; Loebinger, F. K.; Long, G. D.; Losty, M. J.; Ludwig, J.; Liu, D.; Macchiolo, A.; Macpherson, A.; Mader, W.; Mannelli, M.; Marcellini, S.; Markopoulos, C.; Martin, A. J.; Martin, J. P.; Martinez, G.; Mashimo, T.; Mättig, P.; McDonald, W. J.; McKenna, J.; Mckigney, E. A.; McMahon, T. J.; McPherson, R. A.; Meijers, F.; Menke, S.; Merritt, F. S.; Mes, H.; Meyer, J.; Michelini, A.; Mihara, S.; Mikenberg, G.; Miller, D. J.; Mir, R.; Mohr, W.; Montanari, A.; Mori, T.; Nagai, K.; Nakamura, I.; Neal, H. A.; Nellen, B.; Nisius, R.; O'Neale, S. W.; Oakham, F. G.; Odorici, F.; Ogren, H. O.; Oreglia, M. J.; Orito, S.; Pálinkás, J.; Pásztor, G.; Pater, J. R.; Patrick, G. N.; Patt, J.; Perez-Ochoa, R.; Petzold, S.; Pfeifenschneider, P.; Pilcher, J. E.; Pinfold, J.; Plane, D. E.; Poffenberger, P.; Polok, J.; Przybycień, M.; Rembser, C.; Rick, H.; Robertson, S.; Robins, S. A.; Rodning, N.; Roney, J. M.; Roscoe, K.; Rossi, A. M.; Rozen, Y.; Runge, K.; Runolfsson, O.; Rust, D. R.; Sachs, K.; Saeki, T.; Sahr, O.; Sang, W. M.; Sarkisyan, E. K.G.; Sbarra, C.; Schaile, A. D.; Schaile, O.; Scharf, F.; Scharff-Hansen, P.; Schieck, J.; Schmitt, B.; Schmitt, S.; Schöning, A.; Schröder, M.; Schumacher, M.; Schwick, C.; Scott, W. G.; Seuster, R.; Shears, T. G.; Shen, B. C.; Shepherd-Themistocleous, C. H.; Sherwood, P.; Siroli, G. P.; Sittler, A.; Skuja, A.; Smith, A. M.; Snow, G. A.; Sobie, R.; Söldner-Rembold, S.; Spagnolo, S.; Sproston, M.; Stahl, A.; Stephens, K.; Steuerer, J.; Stoll, K.; Strom, D.; Strohmer, R.; Surrow, B.; Talbot, S. D.; Tanaka, S.; Taras, P.; Tarem, S.; Teuscher, R.; Thiergen, M.; Thomas, J.; Thomson, M. A.; von Törne, E.; Torrence, E.; Towers, S.; Trigger, I.; Trácsányi, Z.; Tsur, E.; Turcot, A. S.; Turner-Watson, M. F.; Ueda, I.; Van Kooten, R.; Vannerem, P.; Verzocchi, M.; Voss, H.; Wäckerle, F.; Wagner, A.; Ward, C. P.; Ward, D. R.; Watkins, P. M.; Watson, A. T.; Watson, N. K.; Wells, P. S.; Wermes, N.; White, J. S.; Wilson, G. W.; Wilson, J. A.; Wyatt, T. R.; Yamashita, S.; Yekutieli, G.; Zacek, V.; Zer-Zion, D.

In: European Physical Journal C, Vol. 12, No. 4, 01.01.2000, p. 609-626.

Research output: Contribution to journalArticle

Abbiendi, G, Ackerstaff, K, Alexander, G, Allison, J, Altekamp, N, Anderson, KJ, Anderson, S, Arcelli, S, Asai, S, Ashby, SF, Axen, D, Azuelos, G, Ball, AH, Barberio, E, Barlow, RJ, Bartoldus, R, Batley, JR, Baumann, S, Bechtluft, J, Behnke, T, Bell, KW, Bella, G, Bellerive, A, Bentvelsen, S, Bethke, S, Betts, S, Biebel, O, Biguzzi, A, Bird, SD, Blobel, V, Bloodworth, IJ, Bock, P, Böhme, J, Bonacorsi, D, Boutemeur, M, Braibant, S, Bright-Thomas, P, Brigliadori, L, Brown, RM, Burckhart, HJ, Capiluppi, P, Carnegie, RK, Carter, AA, Carter, JR, Chang, CY, Charlton, DG, Chrisman, D, Ciocca, C, Clarke, PEL, Clay, E, Cohen, I, Conboy, JE, Cooke, OC, Couyoumtzelis, C, Coxe, RL, Cuffiani, M, Dado, S, Dallavalle, GM, Davis, R, De Jong, S, de Roeck, A, Dervan, P, Desch, K, Dienes, B, Dixit, MS, Dubbert, J, Duchovni, E, Duckeck, G, Duerdoth, IP, Eatough, D, Estabrooks, PG, Etzion, E, Fabbri, F, Fanti, M, Faust, AA, Fiedler, F, Fierro, M, Fleck, I, Folman, R, Fürtjes, A, Futyan, DI, Gagnon, P, Gary, JW, Gascon, J, Gascon-Shotkin, SM, Gaycken, G, Geich-Gimbel, C, Giacomelli, G, Giacomelli, P, Gibson, V, Gibson, WR, Gingrich, DM, Glenzinski, D, Goldberg, J, Gorn, W, Grandi, C, Graham, K, Gross, E, Grunhaus, J, Gruwé, M, Hanson, GG, Hansroul, M, Hapke, M, Harder, K, Harel, A, Hargrove, CK, Hartmann, C, Hauschild, M, Hawkes, CM, Hawkings, R, Hemingway, RJ, Herndon, M, Herten, G, Heuer, RD, Hildreth, MD, Hill, JC, Hobson, PR, Hoch, M, Hocker, A, Hoffman, K, Homer, RJ, Honma, AK, Horváth, D, Hossain, KR, Howard, R, Hüntemeyer, P, Igo-Kemenes, P, Imrie, DC, Ishii, K, Jacob, FR, Jawahery, A, Jeremie, H, Jimack, M, Jones, CR, Jovanovic, P, Junk, TR, Karlen, D, Kartvelishvili, V, Kawagoe, K, Kawamoto, T, Kayal, PI, Keeler, RK, Kellogg, RG, Kennedy, BW, Kim, DH, Klier, A, Kluth, S, Kobayashi, T, Koetke, DS, Kokott, TP, Kolrep, M, Komamiya, S, Kowalewski, RV, Kress, T, Krieger, P, von Krogh, J, Kuhl, T, Kyberd, P, Lafferty, GD, Landsman, H, Lanske, D, Lauber, J, Lautenschlager, SR, Lawson, I, Layter, JG, Lazic, D, Lee, AM, Lellouch, D, Letts, J, Levinson, L, Liebisch, R, List, B, Littlewood, C, Lloyd, AW, Lloyd, SL, Loebinger, FK, Long, GD, Losty, MJ, Ludwig, J, Liu, D, Macchiolo, A, Macpherson, A, Mader, W, Mannelli, M, Marcellini, S, Markopoulos, C, Martin, AJ, Martin, JP, Martinez, G, Mashimo, T, Mättig, P, McDonald, WJ, McKenna, J, Mckigney, EA, McMahon, TJ, McPherson, RA, Meijers, F, Menke, S, Merritt, FS, Mes, H, Meyer, J, Michelini, A, Mihara, S, Mikenberg, G, Miller, DJ, Mir, R, Mohr, W, Montanari, A, Mori, T, Nagai, K, Nakamura, I, Neal, HA, Nellen, B, Nisius, R, O'Neale, SW, Oakham, FG, Odorici, F, Ogren, HO, Oreglia, MJ, Orito, S, Pálinkás, J, Pásztor, G, Pater, JR, Patrick, GN, Patt, J, Perez-Ochoa, R, Petzold, S, Pfeifenschneider, P, Pilcher, JE, Pinfold, J, Plane, DE, Poffenberger, P, Polok, J, Przybycień, M, Rembser, C, Rick, H, Robertson, S, Robins, SA, Rodning, N, Roney, JM, Roscoe, K, Rossi, AM, Rozen, Y, Runge, K, Runolfsson, O, Rust, DR, Sachs, K, Saeki, T, Sahr, O, Sang, WM, Sarkisyan, EKG, Sbarra, C, Schaile, AD, Schaile, O, Scharf, F, Scharff-Hansen, P, Schieck, J, Schmitt, B, Schmitt, S, Schöning, A, Schröder, M, Schumacher, M, Schwick, C, Scott, WG, Seuster, R, Shears, TG, Shen, BC, Shepherd-Themistocleous, CH, Sherwood, P, Siroli, GP, Sittler, A, Skuja, A, Smith, AM, Snow, GA, Sobie, R, Söldner-Rembold, S, Spagnolo, S, Sproston, M, Stahl, A, Stephens, K, Steuerer, J, Stoll, K, Strom, D, Strohmer, R, Surrow, B, Talbot, SD, Tanaka, S, Taras, P, Tarem, S, Teuscher, R, Thiergen, M, Thomas, J, Thomson, MA, von Törne, E, Torrence, E, Towers, S, Trigger, I, Trácsányi, Z, Tsur, E, Turcot, AS, Turner-Watson, MF, Ueda, I, Van Kooten, R, Vannerem, P, Verzocchi, M, Voss, H, Wäckerle, F, Wagner, A, Ward, CP, Ward, DR, Watkins, PM, Watson, AT, Watson, NK, Wells, PS, Wermes, N, White, JS, Wilson, GW, Wilson, JA, Wyatt, TR, Yamashita, S, Yekutieli, G, Zacek, V & Zer-Zion, D 2000, 'Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices', European Physical Journal C, vol. 12, no. 4, pp. 609-626.
Abbiendi G, Ackerstaff K, Alexander G, Allison J, Altekamp N, Anderson KJ et al. Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. European Physical Journal C. 2000 Jan 1;12(4):609-626.
Abbiendi, G. ; Ackerstaff, K. ; Alexander, G. ; Allison, J. ; Altekamp, N. ; Anderson, K. J. ; Anderson, S. ; Arcelli, S. ; Asai, S. ; Ashby, S. F. ; Axen, D. ; Azuelos, G. ; Ball, A. H. ; Barberio, E. ; Barlow, R. J. ; Bartoldus, R. ; Batley, J. R. ; Baumann, S. ; Bechtluft, J. ; Behnke, T. ; Bell, K. W. ; Bella, G. ; Bellerive, A. ; Bentvelsen, S. ; Bethke, S. ; Betts, S. ; Biebel, O. ; Biguzzi, A. ; Bird, S. D. ; Blobel, V. ; Bloodworth, I. J. ; Bock, P. ; Böhme, J. ; Bonacorsi, D. ; Boutemeur, M. ; Braibant, S. ; Bright-Thomas, P. ; Brigliadori, L. ; Brown, R. M. ; Burckhart, H. J. ; Capiluppi, P. ; Carnegie, R. K. ; Carter, A. A. ; Carter, J. R. ; Chang, C. Y. ; Charlton, D. G. ; Chrisman, D. ; Ciocca, C. ; Clarke, P. E.L. ; Clay, E. ; Cohen, I. ; Conboy, J. E. ; Cooke, O. C. ; Couyoumtzelis, C. ; Coxe, R. L. ; Cuffiani, M. ; Dado, S. ; Dallavalle, G. M. ; Davis, R. ; De Jong, S. ; de Roeck, A. ; Dervan, P. ; Desch, K. ; Dienes, B. ; Dixit, M. S. ; Dubbert, J. ; Duchovni, E. ; Duckeck, G. ; Duerdoth, I. P. ; Eatough, D. ; Estabrooks, P. G. ; Etzion, E. ; Fabbri, F. ; Fanti, M. ; Faust, A. A. ; Fiedler, F. ; Fierro, M. ; Fleck, I. ; Folman, R. ; Fürtjes, A. ; Futyan, D. I. ; Gagnon, P. ; Gary, J. W. ; Gascon, J. ; Gascon-Shotkin, S. M. ; Gaycken, G. ; Geich-Gimbel, C. ; Giacomelli, G. ; Giacomelli, P. ; Gibson, V. ; Gibson, W. R. ; Gingrich, D. M. ; Glenzinski, D. ; Goldberg, J. ; Gorn, W. ; Grandi, C. ; Graham, K. ; Gross, E. ; Grunhaus, J. ; Gruwé, M. ; Hanson, G. G. ; Hansroul, M. ; Hapke, M. ; Harder, K. ; Harel, A. ; Hargrove, C. K. ; Hartmann, C. ; Hauschild, M. ; Hawkes, C. M. ; Hawkings, R. ; Hemingway, R. J. ; Herndon, M. ; Herten, G. ; Heuer, R. D. ; Hildreth, M. D. ; Hill, J. C. ; Hobson, P. R. ; Hoch, M. ; Hocker, A. ; Hoffman, K. ; Homer, R. J. ; Honma, A. K. ; Horváth, D. ; Hossain, K. R. ; Howard, R. ; Hüntemeyer, P. ; Igo-Kemenes, P. ; Imrie, D. C. ; Ishii, K. ; Jacob, F. R. ; Jawahery, A. ; Jeremie, H. ; Jimack, M. ; Jones, C. R. ; Jovanovic, P. ; Junk, T. R. ; Karlen, D. ; Kartvelishvili, V. ; Kawagoe, Kiyotomo ; Kawamoto, T. ; Kayal, P. I. ; Keeler, R. K. ; Kellogg, R. G. ; Kennedy, B. W. ; Kim, D. H. ; Klier, A. ; Kluth, S. ; Kobayashi, T. ; Koetke, D. S. ; Kokott, T. P. ; Kolrep, M. ; Komamiya, S. ; Kowalewski, R. V. ; Kress, T. ; Krieger, P. ; von Krogh, J. ; Kuhl, T. ; Kyberd, P. ; Lafferty, G. D. ; Landsman, H. ; Lanske, D. ; Lauber, J. ; Lautenschlager, S. R. ; Lawson, I. ; Layter, J. G. ; Lazic, D. ; Lee, A. M. ; Lellouch, D. ; Letts, J. ; Levinson, L. ; Liebisch, R. ; List, B. ; Littlewood, C. ; Lloyd, A. W. ; Lloyd, S. L. ; Loebinger, F. K. ; Long, G. D. ; Losty, M. J. ; Ludwig, J. ; Liu, D. ; Macchiolo, A. ; Macpherson, A. ; Mader, W. ; Mannelli, M. ; Marcellini, S. ; Markopoulos, C. ; Martin, A. J. ; Martin, J. P. ; Martinez, G. ; Mashimo, T. ; Mättig, P. ; McDonald, W. J. ; McKenna, J. ; Mckigney, E. A. ; McMahon, T. J. ; McPherson, R. A. ; Meijers, F. ; Menke, S. ; Merritt, F. S. ; Mes, H. ; Meyer, J. ; Michelini, A. ; Mihara, S. ; Mikenberg, G. ; Miller, D. J. ; Mir, R. ; Mohr, W. ; Montanari, A. ; Mori, T. ; Nagai, K. ; Nakamura, I. ; Neal, H. A. ; Nellen, B. ; Nisius, R. ; O'Neale, S. W. ; Oakham, F. G. ; Odorici, F. ; Ogren, H. O. ; Oreglia, M. J. ; Orito, S. ; Pálinkás, J. ; Pásztor, G. ; Pater, J. R. ; Patrick, G. N. ; Patt, J. ; Perez-Ochoa, R. ; Petzold, S. ; Pfeifenschneider, P. ; Pilcher, J. E. ; Pinfold, J. ; Plane, D. E. ; Poffenberger, P. ; Polok, J. ; Przybycień, M. ; Rembser, C. ; Rick, H. ; Robertson, S. ; Robins, S. A. ; Rodning, N. ; Roney, J. M. ; Roscoe, K. ; Rossi, A. M. ; Rozen, Y. ; Runge, K. ; Runolfsson, O. ; Rust, D. R. ; Sachs, K. ; Saeki, T. ; Sahr, O. ; Sang, W. M. ; Sarkisyan, E. K.G. ; Sbarra, C. ; Schaile, A. D. ; Schaile, O. ; Scharf, F. ; Scharff-Hansen, P. ; Schieck, J. ; Schmitt, B. ; Schmitt, S. ; Schöning, A. ; Schröder, M. ; Schumacher, M. ; Schwick, C. ; Scott, W. G. ; Seuster, R. ; Shears, T. G. ; Shen, B. C. ; Shepherd-Themistocleous, C. H. ; Sherwood, P. ; Siroli, G. P. ; Sittler, A. ; Skuja, A. ; Smith, A. M. ; Snow, G. A. ; Sobie, R. ; Söldner-Rembold, S. ; Spagnolo, S. ; Sproston, M. ; Stahl, A. ; Stephens, K. ; Steuerer, J. ; Stoll, K. ; Strom, D. ; Strohmer, R. ; Surrow, B. ; Talbot, S. D. ; Tanaka, S. ; Taras, P. ; Tarem, S. ; Teuscher, R. ; Thiergen, M. ; Thomas, J. ; Thomson, M. A. ; von Törne, E. ; Torrence, E. ; Towers, S. ; Trigger, I. ; Trácsányi, Z. ; Tsur, E. ; Turcot, A. S. ; Turner-Watson, M. F. ; Ueda, I. ; Van Kooten, R. ; Vannerem, P. ; Verzocchi, M. ; Voss, H. ; Wäckerle, F. ; Wagner, A. ; Ward, C. P. ; Ward, D. R. ; Watkins, P. M. ; Watson, A. T. ; Watson, N. K. ; Wells, P. S. ; Wermes, N. ; White, J. S. ; Wilson, G. W. ; Wilson, J. A. ; Wyatt, T. R. ; Yamashita, S. ; Yekutieli, G. ; Zacek, V. ; Zer-Zion, D. / Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices. In: European Physical Journal C. 2000 ; Vol. 12, No. 4. pp. 609-626.
@article{c2774ab68a304abf8f45328373cd7d19,
title = "Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices",
abstract = "The lifetimes of the B+ and B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0 decays recorded at LEP. Z0 → bb̄ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results are τΒ+ = 1.643 ± 0.037 ± 0.025 ps τΒ0 = 1.523 ± 0.057 ± 0.053 ps τΒ+/τΒ0 = 1.079 ± 0.064 ± 0.041, where in each case the first error is statistical and the second systematic. A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b hadron decays. No evidence for such effects is seen. The CP violation parameter Re(∈Β) is measured to be Re(∈Β) = 0.001 ± 0.014 ± 0.003 and the fractional difference between b and b̄ hadron lifetimes is measured to be (Δτ/τ)b ≡ τ(b hadron) - τ(b̄ hadron)/τ(average) = -0.001 ± 0.012 ± 0.008.",
author = "G. Abbiendi and K. Ackerstaff and G. Alexander and J. Allison and N. Altekamp and Anderson, {K. J.} and S. Anderson and S. Arcelli and S. Asai and Ashby, {S. F.} and D. Axen and G. Azuelos and Ball, {A. H.} and E. Barberio and Barlow, {R. J.} and R. Bartoldus and Batley, {J. R.} and S. Baumann and J. Bechtluft and T. Behnke and Bell, {K. W.} and G. Bella and A. Bellerive and S. Bentvelsen and S. Bethke and S. Betts and O. Biebel and A. Biguzzi and Bird, {S. D.} and V. Blobel and Bloodworth, {I. J.} and P. Bock and J. B{\"o}hme and D. Bonacorsi and M. Boutemeur and S. Braibant and P. Bright-Thomas and L. Brigliadori and Brown, {R. M.} 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 D. Chrisman and C. Ciocca and Clarke, {P. E.L.} and E. Clay and I. Cohen and Conboy, {J. E.} and Cooke, {O. C.} and C. Couyoumtzelis and Coxe, {R. L.} and M. Cuffiani and S. Dado and Dallavalle, {G. M.} and R. Davis and {De Jong}, S. and {de Roeck}, A. and P. Dervan and K. Desch and B. Dienes and Dixit, {M. S.} and J. Dubbert and E. Duchovni and G. Duckeck and Duerdoth, {I. P.} and D. Eatough and Estabrooks, {P. G.} and E. Etzion and F. Fabbri and M. Fanti and Faust, {A. A.} and F. Fiedler and M. Fierro and I. Fleck and R. Folman and A. F{\"u}rtjes and Futyan, {D. I.} and P. Gagnon and Gary, {J. W.} and J. Gascon and Gascon-Shotkin, {S. M.} and G. Gaycken and C. Geich-Gimbel and G. Giacomelli and P. Giacomelli and V. Gibson and Gibson, {W. R.} and Gingrich, {D. M.} and D. Glenzinski and J. Goldberg and W. Gorn and C. Grandi and K. Graham and E. Gross and J. Grunhaus and M. Gruw{\'e} and Hanson, {G. G.} and M. Hansroul and M. Hapke and K. Harder and A. Harel and Hargrove, {C. K.} and C. Hartmann and M. Hauschild and Hawkes, {C. M.} and R. Hawkings and Hemingway, {R. J.} and M. Herndon and G. Herten and Heuer, {R. D.} and Hildreth, {M. D.} and Hill, {J. C.} and Hobson, {P. R.} and M. Hoch and A. Hocker and K. Hoffman and Homer, {R. J.} and Honma, {A. K.} and D. Horv{\'a}th and Hossain, {K. R.} and R. Howard and P. H{\"u}ntemeyer and P. Igo-Kemenes and Imrie, {D. C.} and K. Ishii and Jacob, {F. R.} and A. Jawahery and H. Jeremie and M. Jimack and Jones, {C. R.} and P. Jovanovic and Junk, {T. R.} and D. Karlen and V. Kartvelishvili and Kiyotomo Kawagoe and T. Kawamoto and Kayal, {P. I.} and Keeler, {R. K.} and Kellogg, {R. G.} and Kennedy, {B. W.} and Kim, {D. H.} and A. Klier and S. Kluth and T. Kobayashi and Koetke, {D. S.} and Kokott, {T. P.} and M. Kolrep and S. Komamiya and Kowalewski, {R. V.} and T. Kress and P. Krieger and {von Krogh}, J. and T. Kuhl and P. Kyberd and Lafferty, {G. D.} and H. Landsman and D. Lanske and J. Lauber and Lautenschlager, {S. R.} and I. Lawson and Layter, {J. G.} and D. Lazic and Lee, {A. M.} and D. Lellouch and J. Letts and L. Levinson and R. Liebisch and B. List and C. Littlewood and Lloyd, {A. W.} and Lloyd, {S. L.} and Loebinger, {F. K.} and Long, {G. D.} and Losty, {M. J.} and J. Ludwig and D. Liu and A. Macchiolo and A. Macpherson and W. Mader and M. Mannelli and S. Marcellini and C. Markopoulos and Martin, {A. J.} and Martin, {J. P.} and G. Martinez and T. Mashimo and P. M{\"a}ttig and McDonald, {W. J.} and J. McKenna and Mckigney, {E. A.} and McMahon, {T. J.} and McPherson, {R. A.} and F. Meijers and S. Menke and Merritt, {F. S.} and H. Mes and J. Meyer and A. Michelini and S. Mihara and G. Mikenberg and Miller, {D. J.} and R. Mir and W. Mohr and A. Montanari and T. Mori and K. Nagai and I. Nakamura and Neal, {H. A.} and B. Nellen and R. Nisius and O'Neale, {S. W.} and Oakham, {F. G.} and F. Odorici and Ogren, {H. O.} and Oreglia, {M. J.} and S. Orito and J. P{\'a}link{\'a}s and G. P{\'a}sztor and Pater, {J. R.} and Patrick, {G. N.} and J. Patt and R. Perez-Ochoa and S. Petzold and P. Pfeifenschneider and Pilcher, {J. E.} and J. Pinfold and Plane, {D. E.} and P. Poffenberger and J. Polok and M. Przybycień and C. Rembser and H. Rick and S. Robertson and Robins, {S. A.} and N. Rodning and Roney, {J. M.} and K. Roscoe and Rossi, {A. M.} and Y. Rozen and K. Runge and O. Runolfsson and Rust, {D. R.} and K. Sachs and T. Saeki and O. Sahr and Sang, {W. M.} and Sarkisyan, {E. K.G.} and C. Sbarra and Schaile, {A. D.} and O. Schaile and F. Scharf and P. Scharff-Hansen and J. Schieck and B. Schmitt and S. Schmitt and A. Sch{\"o}ning and M. Schr{\"o}der and M. Schumacher and C. Schwick and Scott, {W. G.} and R. Seuster and Shears, {T. G.} and Shen, {B. C.} and Shepherd-Themistocleous, {C. H.} and P. Sherwood and Siroli, {G. P.} and A. Sittler and A. Skuja and Smith, {A. M.} and Snow, {G. A.} and R. Sobie and S. S{\"o}ldner-Rembold and S. Spagnolo and M. Sproston and A. Stahl and K. Stephens and J. Steuerer and K. Stoll and D. Strom and R. Strohmer and B. Surrow and Talbot, {S. D.} and S. Tanaka and P. Taras and S. Tarem and R. Teuscher and M. Thiergen and J. Thomas and Thomson, {M. A.} and {von T{\"o}rne}, E. and E. Torrence and S. Towers and I. Trigger and Z. Tr{\'a}cs{\'a}nyi and E. Tsur and Turcot, {A. S.} and Turner-Watson, {M. F.} and I. Ueda and {Van Kooten}, R. and P. Vannerem and M. Verzocchi and H. Voss and F. W{\"a}ckerle and A. Wagner and Ward, {C. P.} and Ward, {D. R.} and Watkins, {P. M.} and Watson, {A. T.} and Watson, {N. K.} and Wells, {P. S.} and N. Wermes and White, {J. S.} and Wilson, {G. W.} and Wilson, {J. A.} and Wyatt, {T. R.} and S. Yamashita and G. Yekutieli and V. Zacek and D. Zer-Zion",
year = "2000",
month = "1",
day = "1",
language = "English",
volume = "12",
pages = "609--626",
journal = "European Physical Journal C",
issn = "1434-6044",
publisher = "Springer New York",
number = "4",

}

TY - JOUR

T1 - Measurement of the B+ and B0 lifetimes and search for CP(T) violation using reconstructed secondary vertices

AU - Abbiendi, G.

AU - Ackerstaff, K.

AU - Alexander, G.

AU - Allison, J.

AU - Altekamp, N.

AU - Anderson, K. J.

AU - Anderson, S.

AU - Arcelli, S.

AU - Asai, S.

AU - Ashby, S. F.

AU - Axen, D.

AU - Azuelos, G.

AU - Ball, A. H.

AU - Barberio, E.

AU - Barlow, R. J.

AU - Bartoldus, R.

AU - Batley, J. R.

AU - Baumann, S.

AU - Bechtluft, J.

AU - Behnke, T.

AU - Bell, K. W.

AU - Bella, G.

AU - Bellerive, A.

AU - Bentvelsen, S.

AU - Bethke, S.

AU - Betts, S.

AU - Biebel, O.

AU - Biguzzi, A.

AU - Bird, S. D.

AU - Blobel, V.

AU - Bloodworth, I. J.

AU - Bock, P.

AU - Böhme, J.

AU - Bonacorsi, D.

AU - Boutemeur, M.

AU - Braibant, S.

AU - Bright-Thomas, P.

AU - Brigliadori, L.

AU - Brown, R. M.

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 - Chrisman, D.

AU - Ciocca, C.

AU - Clarke, P. E.L.

AU - Clay, E.

AU - Cohen, I.

AU - Conboy, J. E.

AU - Cooke, O. C.

AU - Couyoumtzelis, C.

AU - Coxe, R. L.

AU - Cuffiani, M.

AU - Dado, S.

AU - Dallavalle, G. M.

AU - Davis, R.

AU - De Jong, S.

AU - de Roeck, A.

AU - Dervan, P.

AU - Desch, K.

AU - Dienes, B.

AU - Dixit, M. S.

AU - Dubbert, J.

AU - Duchovni, E.

AU - Duckeck, G.

AU - Duerdoth, I. P.

AU - Eatough, D.

AU - Estabrooks, P. G.

AU - Etzion, E.

AU - Fabbri, F.

AU - Fanti, M.

AU - Faust, A. A.

AU - Fiedler, F.

AU - Fierro, M.

AU - Fleck, I.

AU - Folman, R.

AU - Fürtjes, A.

AU - Futyan, D. I.

AU - Gagnon, P.

AU - Gary, J. W.

AU - Gascon, J.

AU - Gascon-Shotkin, S. M.

AU - Gaycken, G.

AU - Geich-Gimbel, C.

AU - Giacomelli, G.

AU - Giacomelli, P.

AU - Gibson, V.

AU - Gibson, W. R.

AU - Gingrich, D. M.

AU - Glenzinski, D.

AU - Goldberg, J.

AU - Gorn, W.

AU - Grandi, C.

AU - Graham, K.

AU - Gross, E.

AU - Grunhaus, J.

AU - Gruwé, M.

AU - Hanson, G. G.

AU - Hansroul, M.

AU - Hapke, M.

AU - Harder, K.

AU - Harel, A.

AU - Hargrove, C. K.

AU - Hartmann, C.

AU - Hauschild, M.

AU - Hawkes, C. M.

AU - Hawkings, R.

AU - Hemingway, R. J.

AU - Herndon, M.

AU - Herten, G.

AU - Heuer, R. D.

AU - Hildreth, M. D.

AU - Hill, J. C.

AU - Hobson, P. R.

AU - Hoch, M.

AU - Hocker, A.

AU - Hoffman, K.

AU - Homer, R. J.

AU - Honma, A. K.

AU - Horváth, D.

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PY - 2000/1/1

Y1 - 2000/1/1

N2 - The lifetimes of the B+ and B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0 decays recorded at LEP. Z0 → bb̄ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results are τΒ+ = 1.643 ± 0.037 ± 0.025 ps τΒ0 = 1.523 ± 0.057 ± 0.053 ps τΒ+/τΒ0 = 1.079 ± 0.064 ± 0.041, where in each case the first error is statistical and the second systematic. A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b hadron decays. No evidence for such effects is seen. The CP violation parameter Re(∈Β) is measured to be Re(∈Β) = 0.001 ± 0.014 ± 0.003 and the fractional difference between b and b̄ hadron lifetimes is measured to be (Δτ/τ)b ≡ τ(b hadron) - τ(b̄ hadron)/τ(average) = -0.001 ± 0.012 ± 0.008.

AB - The lifetimes of the B+ and B0 mesons, and their ratio, have been measured in the OPAL experiment using 2.4 million hadronic Z0 decays recorded at LEP. Z0 → bb̄ decays were tagged using displaced secondary vertices and high momentum electrons and muons. The lifetimes were then measured using well-reconstructed charged and neutral secondary vertices selected in this tagged data sample. The results are τΒ+ = 1.643 ± 0.037 ± 0.025 ps τΒ0 = 1.523 ± 0.057 ± 0.053 ps τΒ+/τΒ0 = 1.079 ± 0.064 ± 0.041, where in each case the first error is statistical and the second systematic. A larger data sample of 3.1 million hadronic Z0 decays has been used to search for CP and CPT violating effects by comparison of inclusive b and b hadron decays. No evidence for such effects is seen. The CP violation parameter Re(∈Β) is measured to be Re(∈Β) = 0.001 ± 0.014 ± 0.003 and the fractional difference between b and b̄ hadron lifetimes is measured to be (Δτ/τ)b ≡ τ(b hadron) - τ(b̄ hadron)/τ(average) = -0.001 ± 0.012 ± 0.008.

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M3 - Article

AN - SCOPUS:0000694870

VL - 12

SP - 609

EP - 626

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 4

ER -