Heavy flavour production in Z decays

D. Decamp; B. Deschizeaux; C. Goy; J. P. Lees; M. N. Minard; J. M. Crespo; M. Delfino; E. Fernandez; P. Mato; R. Miguel; Ll M. Mir; S. Orteu; A. Pacheco; J. A. Perlas; E. Tubau; M. G. Catanesi; M. de Palma; A. Farilla; G. Iaselli; G. Maggi; S. Natali; S. Nuzzo; A. Ranieri; G. Raso; F. Romano; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; G. Zito; Y. Gao; H. Hu; D. Huang; S. Jin; J. Lin; T. Ruan; T. Wang; W. Wu; Y. Xie; D. Xu; R. Xu; J. Zhang; Z. Zhang; W. Zhao; H. Albrecht; W. B. Atwood; F. Bird; E. Blucher; D. Brown; T. H. Burnett; H. Drevermann; F. Dydak; R. W. Forty; Ll Garrido; C. Grab; R. Hagelberg; S. Haywood; B. Jost; M. Kasemann; G. Kellner; J. Knobloch; A. Lacourt; I. Lehraus; T. Lohse; D. Lüke; A. Marchioro; M. Martinez; J. May; S. Menary; A. Minten; A. Miotto; P. Palazzi; M. Pepe-Altarelli; F. Ranjard; A. Roth; J. Rothberg; H. Rotscheidt; W. von Rüden; R. St.Denis; D. Schlatter; M. Takashima; M. Talby; H. Taureg; W. Tejessy; H. Wachsmuth; S. Wasserbaech; S. Wheeler; W. Wiedenmann; W. Witzeling; J. Wotschack; Z. Ajaltouni; M. Bardadin-Otwinowska; A. Falvard; P. Gay; P. Henrard; J. Jousset; B. Michel; J. C. Montret; D. Pallin; P. Perret

doi:10.1016/0370-2693(90)90362-A

Heavy flavour production in Z decays

D. Decamp, B. Deschizeaux, C. Goy, J. P. Lees, M. N. Minard, J. M. Crespo, M. Delfino, E. Fernandez, P. Mato, R. Miguel, Ll M. Mir, S. Orteu, A. Pacheco, J. A. Perlas, E. Tubau, M. G. Catanesi, M. de Palma, A. Farilla, G. Iaselli, G. MaggiS. Natali, S. Nuzzo, A. Ranieri, G. Raso, F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, Y. Gao, H. Hu, D. Huang, S. Jin, J. Lin, T. Ruan, T. Wang, W. Wu, Y. Xie, D. Xu, R. Xu, J. Zhang, Z. Zhang, W. Zhao, H. Albrecht, W. B. Atwood, F. Bird, E. Blucher, D. Brown, T. H. Burnett, H. Drevermann, F. Dydak, R. W. Forty, Ll Garrido, C. Grab, R. Hagelberg, S. Haywood, B. Jost, M. Kasemann, G. Kellner, J. Knobloch, A. Lacourt, I. Lehraus, T. Lohse, D. Lüke, A. Marchioro, M. Martinez, J. May, S. Menary, A. Minten, A. Miotto, P. Palazzi, M. Pepe-Altarelli, F. Ranjard, A. Roth, J. Rothberg, H. Rotscheidt, W. von Rüden, R. St.Denis, D. Schlatter, M. Takashima, M. Talby, H. Taureg, W. Tejessy, H. Wachsmuth, S. Wasserbaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Falvard, P. Gay, P. Henrard, J. Jousset, B. Michel, J. C. Montret, D. Pallin, P. Perret

Department of Physics

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Abstract

From an analysis of inclusive leptons in data collected by the ALEPH detector at LEP, we measure the fractions of bb and cc events in hadronic Z decays. The bb fraction times semileptonic branching ratio is measured to be Br(b → e)·Γbb/Γhad = 0.0224 ± 0.0016 ± 0.0010. Assuming a b semileptonic branching ratio of 0.102 ± 0.010 gives Γbb/Γhad = 0.220 ± 0.016 ± 0.024, in good agreement with the standard model prediction of 0.217. The cc fraction times semileptonic branching ratio is measured to be Br(c → e)·Γcc/Γhad = 0.0133 ± 0.0040-0.0031+0.0038. Assuming a c semileptonic branching ratio of 0.090 ± 0.013 gives Γcc/Γhad = 0.148 ± 0.044-0.038+0.045, in agreement with the standard model prediction of 0.171. © 1990.

Original language	English
Pages (from-to)	551-565
Journal	Physics Letters B
Volume	244
Issue number	3-4
DOIs	https://doi.org/10.1016/0370-2693(90)90362-A
Publication status	Published - 26 Jul 1990

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Decamp, D., Deschizeaux, B., Goy, C., Lees, J. P., Minard, M. N., Crespo, J. M., Delfino, M., Fernandez, E., Mato, P., Miguel, R., Mir, L. M., Orteu, S., Pacheco, A., Perlas, J. A., Tubau, E., Catanesi, M. G., de Palma, M., Farilla, A., Iaselli, G., ... Perret, P. (1990). Heavy flavour production in Z decays. Physics Letters B, 244(3-4), 551-565. https://doi.org/10.1016/0370-2693(90)90362-A

@article{1e846a1ee9a944dcba591c966fe66573,

title = "Heavy flavour production in Z decays",

abstract = "From an analysis of inclusive leptons in data collected by the ALEPH detector at LEP, we measure the fractions of bb and cc events in hadronic Z decays. The bb fraction times semileptonic branching ratio is measured to be Br(b → e)·Γbb/Γhad = 0.0224 ± 0.0016 ± 0.0010. Assuming a b semileptonic branching ratio of 0.102 ± 0.010 gives Γbb/Γhad = 0.220 ± 0.016 ± 0.024, in good agreement with the standard model prediction of 0.217. The cc fraction times semileptonic branching ratio is measured to be Br(c → e)·Γcc/Γhad = 0.0133 ± 0.0040-0.0031+0.0038. Assuming a c semileptonic branching ratio of 0.090 ± 0.013 gives Γcc/Γhad = 0.148 ± 0.044-0.038+0.045, in agreement with the standard model prediction of 0.171. {\textcopyright} 1990.",

author = "D. Decamp and B. Deschizeaux and C. Goy and Lees, {J. P.} and Minard, {M. N.} and Crespo, {J. M.} and M. Delfino and E. Fernandez and P. Mato and R. Miguel and Mir, {Ll M.} and S. Orteu and A. Pacheco and Perlas, {J. A.} and E. Tubau and Catanesi, {M. G.} and {de Palma}, M. and A. Farilla and G. Iaselli and G. Maggi and S. Natali and S. Nuzzo and A. Ranieri and G. Raso and F. Romano and F. Ruggieri and G. Selvaggi and L. Silvestris and P. Tempesta and G. Zito and Y. Gao and H. Hu and D. Huang and S. Jin and J. Lin and T. Ruan and T. Wang and W. Wu and Y. Xie and D. Xu and R. Xu and J. Zhang and Z. Zhang and W. Zhao and H. Albrecht and Atwood, {W. B.} and F. Bird and E. Blucher and D. Brown and Burnett, {T. H.} and H. Drevermann and F. Dydak and Forty, {R. W.} and Ll Garrido and C. Grab and R. Hagelberg and S. Haywood and B. Jost and M. Kasemann and G. Kellner and J. Knobloch and A. Lacourt and I. Lehraus and T. Lohse and D. L{\"u}ke and A. Marchioro and M. Martinez and J. May and S. Menary and A. Minten and A. Miotto and P. Palazzi and M. Pepe-Altarelli and F. Ranjard and A. Roth and J. Rothberg and H. Rotscheidt and {von R{\"u}den}, W. and R. St.Denis and D. Schlatter and M. Takashima and M. Talby and H. Taureg and W. Tejessy and H. Wachsmuth and S. Wasserbaech and S. Wheeler and W. Wiedenmann and W. Witzeling and J. Wotschack and Z. Ajaltouni and M. Bardadin-Otwinowska and A. Falvard and P. Gay and P. Henrard and J. Jousset and B. Michel and Montret, {J. C.} and D. Pallin and P. Perret",

year = "1990",

month = jul,

day = "26",

doi = "10.1016/0370-2693(90)90362-A",

language = "English",

volume = "244",

pages = "551--565",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

Decamp, D, Deschizeaux, B, Goy, C, Lees, JP, Minard, MN, Crespo, JM , Delfino, M , Fernandez, E, Mato, P, Miguel, R, Mir, LM, Orteu, S, Pacheco, A, Perlas, JA, Tubau, E, Catanesi, MG, de Palma, M, Farilla, A, Iaselli, G, Maggi, G, Natali, S, Nuzzo, S, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Gao, Y, Hu, H, Huang, D, Jin, S, Lin, J, Ruan, T, Wang, T, Wu, W, Xie, Y, Xu, D, Xu, R, Zhang, J, Zhang, Z, Zhao, W, Albrecht, H, Atwood, WB, Bird, F, Blucher, E, Brown, D, Burnett, TH, Drevermann, H, Dydak, F, Forty, RW, Garrido, L, Grab, C, Hagelberg, R, Haywood, S, Jost, B, Kasemann, M, Kellner, G, Knobloch, J, Lacourt, A, Lehraus, I, Lohse, T, Lüke, D, Marchioro, A, Martinez, M, May, J, Menary, S, Minten, A, Miotto, A, Palazzi, P, Pepe-Altarelli, M, Ranjard, F, Roth, A, Rothberg, J, Rotscheidt, H, von Rüden, W, St.Denis, R, Schlatter, D, Takashima, M, Talby, M, Taureg, H, Tejessy, W, Wachsmuth, H, Wasserbaech, S, Wheeler, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Z, Bardadin-Otwinowska, M, Falvard, A, Gay, P, Henrard, P, Jousset, J, Michel, B, Montret, JC, Pallin, D & Perret, P 1990, 'Heavy flavour production in Z decays', Physics Letters B, vol. 244, no. 3-4, pp. 551-565. https://doi.org/10.1016/0370-2693(90)90362-A

TY - JOUR

T1 - Heavy flavour production in Z decays

AU - Decamp, D.

AU - Deschizeaux, B.

AU - Goy, C.

AU - Lees, J. P.

AU - Minard, M. N.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Mato, P.

AU - Miguel, R.

AU - Mir, Ll M.

AU - Orteu, S.

AU - Pacheco, A.

AU - Perlas, J. A.

AU - Tubau, E.

AU - Catanesi, M. G.

AU - de Palma, M.

AU - Farilla, A.

AU - Iaselli, G.

AU - Maggi, G.

AU - Natali, S.

AU - Nuzzo, S.

AU - Ranieri, A.

AU - Raso, G.

AU - Romano, F.

AU - Ruggieri, F.

AU - Selvaggi, G.

AU - Silvestris, L.

AU - Tempesta, P.

AU - Zito, G.

AU - Gao, Y.

AU - Hu, H.

AU - Huang, D.

AU - Jin, S.

AU - Lin, J.

AU - Ruan, T.

AU - Wang, T.

AU - Wu, W.

AU - Xie, Y.

AU - Xu, D.

AU - Xu, R.

AU - Zhang, J.

AU - Zhang, Z.

AU - Zhao, W.

AU - Albrecht, H.

AU - Atwood, W. B.

AU - Bird, F.

AU - Blucher, E.

AU - Brown, D.

AU - Burnett, T. H.

AU - Drevermann, H.

AU - Dydak, F.

AU - Forty, R. W.

AU - Garrido, Ll

AU - Grab, C.

AU - Hagelberg, R.

AU - Haywood, S.

AU - Jost, B.

AU - Kasemann, M.

AU - Kellner, G.

AU - Knobloch, J.

AU - Lacourt, A.

AU - Lehraus, I.

AU - Lohse, T.

AU - Lüke, D.

AU - Marchioro, A.

AU - Martinez, M.

AU - May, J.

AU - Menary, S.

AU - Minten, A.

AU - Miotto, A.

AU - Palazzi, P.

AU - Pepe-Altarelli, M.

AU - Ranjard, F.

AU - Roth, A.

AU - Rothberg, J.

AU - Rotscheidt, H.

AU - von Rüden, W.

AU - St.Denis, R.

AU - Schlatter, D.

AU - Takashima, M.

AU - Talby, M.

AU - Taureg, H.

AU - Tejessy, W.

AU - Wachsmuth, H.

AU - Wasserbaech, S.

AU - Wheeler, S.

AU - Wiedenmann, W.

AU - Witzeling, W.

AU - Wotschack, J.

AU - Ajaltouni, Z.

AU - Bardadin-Otwinowska, M.

AU - Falvard, A.

AU - Gay, P.

AU - Henrard, P.

AU - Jousset, J.

AU - Michel, B.

AU - Montret, J. C.

AU - Pallin, D.

AU - Perret, P.

PY - 1990/7/26

Y1 - 1990/7/26

N2 - From an analysis of inclusive leptons in data collected by the ALEPH detector at LEP, we measure the fractions of bb and cc events in hadronic Z decays. The bb fraction times semileptonic branching ratio is measured to be Br(b → e)·Γbb/Γhad = 0.0224 ± 0.0016 ± 0.0010. Assuming a b semileptonic branching ratio of 0.102 ± 0.010 gives Γbb/Γhad = 0.220 ± 0.016 ± 0.024, in good agreement with the standard model prediction of 0.217. The cc fraction times semileptonic branching ratio is measured to be Br(c → e)·Γcc/Γhad = 0.0133 ± 0.0040-0.0031+0.0038. Assuming a c semileptonic branching ratio of 0.090 ± 0.013 gives Γcc/Γhad = 0.148 ± 0.044-0.038+0.045, in agreement with the standard model prediction of 0.171. © 1990.

AB - From an analysis of inclusive leptons in data collected by the ALEPH detector at LEP, we measure the fractions of bb and cc events in hadronic Z decays. The bb fraction times semileptonic branching ratio is measured to be Br(b → e)·Γbb/Γhad = 0.0224 ± 0.0016 ± 0.0010. Assuming a b semileptonic branching ratio of 0.102 ± 0.010 gives Γbb/Γhad = 0.220 ± 0.016 ± 0.024, in good agreement with the standard model prediction of 0.217. The cc fraction times semileptonic branching ratio is measured to be Br(c → e)·Γcc/Γhad = 0.0133 ± 0.0040-0.0031+0.0038. Assuming a c semileptonic branching ratio of 0.090 ± 0.013 gives Γcc/Γhad = 0.148 ± 0.044-0.038+0.045, in agreement with the standard model prediction of 0.171. © 1990.

U2 - 10.1016/0370-2693(90)90362-A

DO - 10.1016/0370-2693(90)90362-A

M3 - Article

SN - 0370-2693

VL - 244

SP - 551

EP - 565

JO - Physics Letters B

JF - Physics Letters B

IS - 3-4

ER -

Heavy flavour production in Z decays

Abstract

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