Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel

D. Decamp; B. Deschizeaux; C. Goy; J. P. Lees; M. N. Minard; R. Alemany; J. M. Crespo; M. Delfino; E. Fernandez; V. Gaitan; Ll Garrido; Ll M. Mir; A. Pacheco; M. G. Catanesi; D. Creanza; M. de Palma; A. Farilla; G. Iaselli; G. Maggi; M. Maggi; S. Natali; S. Nuzzo; M. Quattromini; A. Ranieri; G. Raso; F. Romano; F. Ruggieri; G. Selvaggi; L. Silvestris; P. Tempesta; G. Zito; Y. Gao; H. Hu; D. Huang; X. Huang; J. Lin; J. Lou; C. Qiao; T. Ruan; T. Wang; Y. Xie; D. Xu; R. Xu; J. Zhang; W. Zhao; W. B. Atwood; L. A.T. Bauerdick; F. Bird; E. Blucher; G. Bonvicini; F. Bossi; D. Brown; T. H. Burnett; H. Drevermann; R. W. Forty; C. Grab; R. Hagelberg; S. Haywood; J. Hilgart; B. Jost; M. Kasemann; J. Knobloch; A. Lacourt; E. Lançon; I. Lehraus; T. Lohse; A. Marchioro; M. Martinez; P. Mato; S. Menary; A. Minten; A. Miotto; R. Miquel; H. G. Moser; J. Nash; P. Palazzi; F. Ranjard; G. Redlinger; A. Roth; J. Rothberg; H. Rotscheidt; R. St.Denis; D. Schlatter; M. Takashima; M. Talby; W. Tejessy; H. Wachsmuth; S. Wasserbaech; S. Wheeler; W. Wiedenmann; W. Witzeling; J. Wotschack; W. Wu; Z. Ajaltouni; M. Bardadin-Otwinowska; A. Falvard; R. El Fellous; P. Gay; J. Harvey; P. Henrard

doi:10.1016/0370-2693(91)91716-9

Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel

D. Decamp, B. Deschizeaux, C. Goy, J. P. Lees, M. N. Minard, R. Alemany, J. M. Crespo, M. Delfino, E. Fernandez, V. Gaitan, Ll Garrido, Ll M. Mir, A. Pacheco, M. G. Catanesi, D. Creanza, M. de Palma, A. Farilla, G. Iaselli, G. Maggi, M. MaggiS. Natali, S. Nuzzo, M. Quattromini, A. Ranieri, G. Raso, F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, Y. Gao, H. Hu, D. Huang, X. Huang, J. Lin, J. Lou, C. Qiao, T. Ruan, T. Wang, Y. Xie, D. Xu, R. Xu, J. Zhang, W. Zhao, W. B. Atwood, L. A.T. Bauerdick, F. Bird, E. Blucher, G. Bonvicini, F. Bossi, D. Brown, T. H. Burnett, H. Drevermann, R. W. Forty, C. Grab, R. Hagelberg, S. Haywood, J. Hilgart, B. Jost, M. Kasemann, J. Knobloch, A. Lacourt, E. Lançon, I. Lehraus, T. Lohse, A. Marchioro, M. Martinez, P. Mato, S. Menary, A. Minten, A. Miotto, R. Miquel, H. G. Moser, J. Nash, P. Palazzi, F. Ranjard, G. Redlinger, A. Roth, J. Rothberg, H. Rotscheidt, R. St.Denis, D. Schlatter, M. Takashima, M. Talby, W. Tejessy, H. Wachsmuth, S. Wasserbaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, W. Wu, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Falvard, R. El Fellous, P. Gay, J. Harvey, P. Henrard

Department of Physics

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Abstract

In a sample of 200 000 Z decays, events with two leptons and an additional pair of charged particles are studied. The 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes. The features of the events are consistent with radiation of virtual photons. © 1991.

Original language	English
Pages (from-to)	112-122
Journal	Physics Letters B
Volume	263
Issue number	1
DOIs	https://doi.org/10.1016/0370-2693(91)91716-9
Publication status	Published - 4 Jul 1991

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10.1016/0370-2693(91)91716-9

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Decamp, D., Deschizeaux, B., Goy, C., Lees, J. P., Minard, M. N., Alemany, R., Crespo, J. M., Delfino, M., Fernandez, E., Gaitan, V., Garrido, L., Mir, L. M., Pacheco, A., Catanesi, M. G., Creanza, D., de Palma, M., Farilla, A., Iaselli, G., Maggi, G., ... Henrard, P. (1991). Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel. Physics Letters B, 263(1), 112-122. https://doi.org/10.1016/0370-2693(91)91716-9

@article{8463ed9d0d154e19baecaebdf88b4edd,

title = "Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel",

abstract = "In a sample of 200 000 Z decays, events with two leptons and an additional pair of charged particles are studied. The 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes. The features of the events are consistent with radiation of virtual photons. {\textcopyright} 1991.",

author = "D. Decamp and B. Deschizeaux and C. Goy and Lees, {J. P.} and Minard, {M. N.} and R. Alemany and Crespo, {J. M.} and M. Delfino and E. Fernandez and V. Gaitan and Ll Garrido and Mir, {Ll M.} and A. Pacheco and Catanesi, {M. G.} and D. Creanza and {de Palma}, M. and A. Farilla and G. Iaselli and G. Maggi and M. Maggi and S. Natali and S. Nuzzo and M. Quattromini 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 X. Huang and J. Lin and J. Lou and C. Qiao and T. Ruan and T. Wang and Y. Xie and D. Xu and R. Xu and J. Zhang and W. Zhao and Atwood, {W. B.} and Bauerdick, {L. A.T.} and F. Bird and E. Blucher and G. Bonvicini and F. Bossi and D. Brown and Burnett, {T. H.} and H. Drevermann and Forty, {R. W.} and C. Grab and R. Hagelberg and S. Haywood and J. Hilgart and B. Jost and M. Kasemann and J. Knobloch and A. Lacourt and E. Lan{\c c}on and I. Lehraus and T. Lohse and A. Marchioro and M. Martinez and P. Mato and S. Menary and A. Minten and A. Miotto and R. Miquel and Moser, {H. G.} and J. Nash and P. Palazzi and F. Ranjard and G. Redlinger and A. Roth and J. Rothberg and H. Rotscheidt and R. St.Denis and D. Schlatter and M. Takashima and M. Talby and W. Tejessy and H. Wachsmuth and S. Wasserbaech and S. Wheeler and W. Wiedenmann and W. Witzeling and J. Wotschack and W. Wu and Z. Ajaltouni and M. Bardadin-Otwinowska and A. Falvard and {El Fellous}, R. and P. Gay and J. Harvey and P. Henrard",

year = "1991",

month = jul,

day = "4",

doi = "10.1016/0370-2693(91)91716-9",

language = "English",

volume = "263",

pages = "112--122",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier",

number = "1",

}

Decamp, D, Deschizeaux, B, Goy, C, Lees, JP, Minard, MN, Alemany, R, Crespo, JM , Delfino, M, Fernandez, E, Gaitan, V, Garrido, L, Mir, LM, Pacheco, A, Catanesi, MG, Creanza, D, de Palma, M, Farilla, A, Iaselli, G, Maggi, G, Maggi, M, Natali, S, Nuzzo, S, Quattromini, M, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Gao, Y, Hu, H, Huang, D, Huang, X, Lin, J, Lou, J, Qiao, C, Ruan, T, Wang, T, Xie, Y, Xu, D, Xu, R, Zhang, J, Zhao, W, Atwood, WB, Bauerdick, LAT, Bird, F, Blucher, E, Bonvicini, G, Bossi, F, Brown, D, Burnett, TH, Drevermann, H, Forty, RW, Grab, C, Hagelberg, R, Haywood, S, Hilgart, J, Jost, B, Kasemann, M, Knobloch, J, Lacourt, A, Lançon, E, Lehraus, I, Lohse, T, Marchioro, A, Martinez, M, Mato, P, Menary, S, Minten, A, Miotto, A, Miquel, R, Moser, HG, Nash, J, Palazzi, P, Ranjard, F, Redlinger, G, Roth, A, Rothberg, J, Rotscheidt, H, St.Denis, R, Schlatter, D, Takashima, M, Talby, M, Tejessy, W, Wachsmuth, H, Wasserbaech, S, Wheeler, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Wu, W, Ajaltouni, Z, Bardadin-Otwinowska, M, Falvard, A, El Fellous, R, Gay, P, Harvey, J & Henrard, P 1991, 'Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel', Physics Letters B, vol. 263, no. 1, pp. 112-122. https://doi.org/10.1016/0370-2693(91)91716-9

TY - JOUR

T1 - Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel

AU - Decamp, D.

AU - Deschizeaux, B.

AU - Goy, C.

AU - Lees, J. P.

AU - Minard, M. N.

AU - Alemany, R.

AU - Crespo, J. M.

AU - Delfino, M.

AU - Fernandez, E.

AU - Gaitan, V.

AU - Garrido, Ll

AU - Mir, Ll M.

AU - Pacheco, A.

AU - Catanesi, M. G.

AU - Creanza, D.

AU - de Palma, M.

AU - Farilla, A.

AU - Iaselli, G.

AU - Maggi, G.

AU - Maggi, M.

AU - Natali, S.

AU - Nuzzo, S.

AU - Quattromini, M.

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 - Huang, X.

AU - Lin, J.

AU - Lou, J.

AU - Qiao, C.

AU - Ruan, T.

AU - Wang, T.

AU - Xie, Y.

AU - Xu, D.

AU - Xu, R.

AU - Zhang, J.

AU - Zhao, W.

AU - Atwood, W. B.

AU - Bauerdick, L. A.T.

AU - Bird, F.

AU - Blucher, E.

AU - Bonvicini, G.

AU - Bossi, F.

AU - Brown, D.

AU - Burnett, T. H.

AU - Drevermann, H.

AU - Forty, R. W.

AU - Grab, C.

AU - Hagelberg, R.

AU - Haywood, S.

AU - Hilgart, J.

AU - Jost, B.

AU - Kasemann, M.

AU - Knobloch, J.

AU - Lacourt, A.

AU - Lançon, E.

AU - Lehraus, I.

AU - Lohse, T.

AU - Marchioro, A.

AU - Martinez, M.

AU - Mato, P.

AU - Menary, S.

AU - Minten, A.

AU - Miotto, A.

AU - Miquel, R.

AU - Moser, H. G.

AU - Nash, J.

AU - Palazzi, P.

AU - Ranjard, F.

AU - Redlinger, G.

AU - Roth, A.

AU - Rothberg, J.

AU - Rotscheidt, H.

AU - St.Denis, R.

AU - Schlatter, D.

AU - Takashima, M.

AU - Talby, M.

AU - Tejessy, W.

AU - Wachsmuth, H.

AU - Wasserbaech, S.

AU - Wheeler, S.

AU - Wiedenmann, W.

AU - Witzeling, W.

AU - Wotschack, J.

AU - Wu, W.

AU - Ajaltouni, Z.

AU - Bardadin-Otwinowska, M.

AU - Falvard, A.

AU - El Fellous, R.

AU - Gay, P.

AU - Harvey, J.

AU - Henrard, P.

PY - 1991/7/4

Y1 - 1991/7/4

N2 - In a sample of 200 000 Z decays, events with two leptons and an additional pair of charged particles are studied. The 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes. The features of the events are consistent with radiation of virtual photons. © 1991.

AB - In a sample of 200 000 Z decays, events with two leptons and an additional pair of charged particles are studied. The 35 events found show a possible excess in the tau channel compared with the expectation from electroweak processes. The features of the events are consistent with radiation of virtual photons. © 1991.

U2 - 10.1016/0370-2693(91)91716-9

DO - 10.1016/0370-2693(91)91716-9

M3 - Article

SN - 0370-2693

VL - 263

SP - 112

EP - 122

JO - Physics Letters B

JF - Physics Letters B

IS - 1

ER -

Charged particle pair production associated with a lepton pair in Z decays. indication of an excess in the tau channel

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