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6. Measurement of B- mixing at the Z

Author

D. Decamp, B. Deschizeaux, C. Goy, J.-P. Less, M.-N. Minard, R. Alemany, J.M. Crespo, M. Delfino, E. Fernandez, V. Gaitan, Ll. Garrido, P. Mato, R. Miquel, Ll.M. Mir, S. Orteu, A. Pacheco, J.A. Perlas, E. Tubau, 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, H. Albrecht, W.B. Atwood, F. Bird, E. blucher, G. Bonvicini, F. Bossi, D. Brown, T.H. Burnett, H. Drevermann, F. Dydak, R.W. Forty, 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, J. Nash, P. Palazzi, F. Ranjard, G. Redlinger, A. Roth, J. Rothberg, H. Rotscheidt, W. von Rüden, R. St. Denis, D. Schlatter, M. Takashima, M. Talby, W. Tejessy, H. Wachsmuth, S. Wassebaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Falvard, R. El Fellous, P. Gay, J. Harvey, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, E.R. Nielsen, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Massimo-Brancaccio, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I. ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, L.A.T. Bauerdick, K. Kleinknecht, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, W. Blum, P. Catteneo, G. Cowan, B. Dehning, H. Dietl, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, G. Lütjens, G. Lutz, W. Männer, H.-G. Moser, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, G. de Bouard, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, Ph. Heusse, P. Janot, V. Journé, D.W. Kim, J. Lefrançois, A.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, A. Giassi, A.M. Giorgi, F. Ligabue, A. Lusiani, E.B. Mannelli, P.S. Marrochesi, A. Messineo, L. Moneta, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini-Castaldi, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quazi, M.R. Saich, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fischer, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Lançon, E. Locci, S. Loucatos, E. Monnier, P. Perez, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.P. Schuller, J. Schwindling, J.G. Ashman, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, E. Neugebauer, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, L. Rolandi, U. Stiegler, L. Bellantoni, J.F. Boudreau, D. Cinabro, J.S. Conway, D.F. Cowen, A.J. DeWeerd, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.l. Harton, J. Hilgart, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, A.M. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, Sau Lan Wu, Z.I. Zhou, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Le, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., P., Mato, R., Miquel, Mir, L. l. M., S., Orteu, A., Pacheco, J. A., Perla, E., Tubau, 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., Silvestri, 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, H., Albrecht, W. B., Atwood, F., Bird, E., Blucher, G., Bonvicini, F., Bossi, D., Brown, T. H., Burnett, H., Drevermann, F., Dydak, R. W., Forty, C., Grab, R., Hagelberg, S., Haywood, B., Jost, M., Kasemann, G., Kellner, J., Knobloch, A., Lacourt, I., Lehrau, T., Lohse, D., Lüke, A., Marchioro, M., Martinez, J., May, S., Menary, A., Minten, A., Miotto, J., Nash, P., Palazzi, F., Ranjard, G., Redlinger, A., Roth, J., Rothberg, H., Rotscheidt, W., von Rüden, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wassebaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Falvard, R., El Fellou, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Massimo Brancaccio, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, L. A. T., Bauerdick, K., Kleinknecht, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, W., Blum, P., Catteneo, G., Cowan, B., Dehning, H., Dietl, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, G., Lütjen, G., Lutz, W., Männer, H. G., Moser, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, G., de Bouard, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, V., Journé, D. W., Kim, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, A. M., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrochesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini Castaldi, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fischer, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Lançon, E., Locci, S., Loucato, E., Monnier, P., Perez, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, A. J., Deweerd, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. l., Harton, J., Hilgart, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, Z. I., Zhou, and G., Zobernig

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Aleph, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Decision maker, Measure (mathematics), Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Mixing (physics), Lepton
Abstract

From more than 175 000 hadronic Z decays observed with the ALEPH detector at LEP, we select 823 events with pairs of leptons in the final state. From these we measure χ , the probability thata b hadron which is observed to decay originated as a b hadron. We find χ =0.132 −0.026 +0.027 .

Published
1991

7. Measurement of α from the structure of particle clusters produced in hadronic Z decays

Author

Décamp, D, Deschizeaux, B, Goy, C, Lees, J P, Minard, M N, Alemany, R, Crespo, J M, Delfino, M C, Fernández, E, Gaitan, V, Garrido, L, Mato, P, Miquel, R, Mir, L M, Orteu, S, Pacheco, A, Perlas, J A, Tubau, E, Catanesi, M G, Creanza, D, De Palma, M, Farilla, A, Iaselli, Giuseppe, 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, Albrecht, H, Atwood, W B, Bird, F, Blucher, E, Bonvicini, G, Bossi, F, Brown, D, Burnett, T H, Drevermann, H, Dydak, Friedrich, Forty, Roger W, Grab, C, Hagelberg, R, Haywood, S, Jost, B, Kasemann, M, Kellner, Gottfried, Knobloch, J, Lacourt, A, Lehraus, Ivan, Lohse, T, Lüke, D, Marchioro, A, Martínez, M, May, J, Menary, S R, Minten, Adolf G, Miotto, A, Nash, J, Palazzi, P, Ranjard, F, Redlinger, G, Roth, A E, Rothberg, J E, Rotscheidt, Herbert, von Rüden, Wolfgang, Saint-Denis, R, Schlatter, W D, Takashima, M, Talby, M, Tejessy, W, Wachsmuth, H W, Wasserbaech, S R, Wheeler, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Ziad J, Bardadin-Otwinowska, Maria, Falvard, A, El-Fellous, R, Gay, P, Harvey, J, Henrard, P, Jousset, J, Michel, B, Montret, J C, Pallin, D, Perret, P, Proriol, J, Prulhière, F, Stimpfl, G, Hansen, J D, Hansen, J R, Hansen, P H, Møllerud, R, Nielsen, E R, Nilsson, B S, Efthymiopoulos, I, Simopoulou, Errietta, Vayaki, Anna, Badier, J, Blondel, A, Bonneaud, G R, Bourotte, J, Braems, F, Brient, J C, Fouque, G, Gamess, A, Guirlet, R, Lemoine, C, Matricon, P, Maubras, M, Morano, R, Miné, P, Parey, J Y, Poilleux, P, Rosowsky, A, Rougé, A, Rumpf, M, Tanaka, R, Videau, H L, Candlin, D J, Veitch, E, Parrini, G, Corden, M, Georgiopoulos, C H, Ikeda, M, Lannutti, J E, Levinthal, D A, Mermikides, Michael E, Sawyer, L, Antonelli, A, Baldini, R, Bencivenni, G, Bologna, G, Campana, P, Capon, G, Chiarella, V, D'Ettorre-Piazzoli, B, Felici, G, Laurelli, P, Mannocchi, G, Massimo-Brancaccio, F, Murtas, F, Murtas, G P, Nicoletti, G, Passalacqua, L, Pepé-Altarelli, M, Picchi, P, Zografou, P, Altoon, B, Boyle, O, Halley, A W, ten Have, I, Hearns, J A, Lynch, J G, Morton, W T, Raine, C, Scarr, J M, Smith, K, Thompson, A S, Brandl, B, Braun, O, Geiges, R, Geweniger, C, Hanke, P, Hepp, V, Heyde, W, Kluge, E E, Maumary, Y, Putzer, A, Rensch, B, Schmitt, K, Stahl, A, Tittel, K, Wunsch, M, Belk, A T, Beuselinck, R, Binnie, David M, Cameron, W, Cattaneo, M, Dornan, Peter J, Dugeay, S, Greene, A M, Hassard, J F, Lieske, N M, Patton, S J, Payne, D G, Phillips, D G, Sedgbeer, J K, Taylor, G, Tomalin, I R, Wright, A G, Girtler, P, Kuhn, D, Rudolph, G, Bowdery, C K, Brodbeck, T J, Finch, A J, Foster, F, Hughes, G, Keemer, N R, Nuttall, M, Patel, A D, Rowlingson, B S, Sloan, Terence, Snow, S W, Whelan, E P, Barczewski, T, Bauerdick, L A T, Kleinknecht, K, Renk, B, Roehn, S, Schmelling, M, Schmidt, H, Steeg, F, Albanese, J P, Aubert, Jean-Jacques, Benchouk, C, Bernard, V, Bonissent, A, Courvoisier, D, Etienne, F, Papalexiou, S, Payre, P, Pietrzyk, B, Qian, Z, Blum, Walter, Cattaneo, Paolo Walter, Cowan, G D, Dehning, Bernd, Dietl, H, Fernández-Bosman, M, Hansl-Kozanecka, Traudl, Jahn, A, Kozanecki, Witold, Lange, E, Lütjens, G, Lutz, Gerhard, Männer, W, Moser, H G, Richter, R H, Schröder, J, Schwarz, A, Settles, Ronald, Stierlin, U, Thomas, J, Wolf, G, Bertin, V, De Bouard, G, Boucrot, J, Callot, O, Chen, X, Cordier, A, Davier, M, Ganis, G, Grivaz, J F, Heusse, P, Janot, P, Journé, V, Kim, D W, Lefrançois, J, Lutz, A M, Veillet, J J, Videau, I, Zhang, Z, Zomer, F, Amendolia, S R, Bagliesi, G, Batignani, G, Bosisio, L, Bottigli, U, Bradaschia, C, Carpinelli, M, Ciocci, M A, Dell'Orso, R, Ferrante, I, Fidecaro, F, Foà, L, Focardi, E, Forti, F, Giassi, A, Giorgi, M A, Ligabue, F, Lusiani, A, Mannelli, E B, Marrocchesi, P S, Messineo, A, Moneta, L, Palla, Fabrizio, Sanguinetti, G, Steinberger, Jack, Tenchini, Roberto, Tonelli, G, Triggiani, G, Vannini-Castaldi, C, Venturi, A, Verdini, P G, Walsh, J, Carter, J M, Green, M G, March, P V, Medcalf, T, Quazi, I S, Saich, M R, Strong, J, Thomas, R M, West, L R, Wildish, T, Botterill, David R, Clifft, R W, Edgecock, T R, Edwards, M, Fisher, S M, Jones, T J, Norton, P R, Salmon, D P, Thompson, J C, Bernard, R, Bloch-Devaux, B, Colas, P, Klopfenstein, C, Lançon, E, Locci, E, Loucatos, Sotirios S, Monnier, E, Pérez, P, Perrier, F, Rander, J, Renardy, J F, Roussarie, A, Schuller, J P, Schwindling, J, Ashman, John Gavin, Booth, C N, Buttar, C M, Carney, R E, Cartwright, S L, Combley, F, Dinsdale, M, Dogru, M, Hatfield, F, Martín, J, Parker, D, Reeves, P, Thompson, L F, Brandt, S, Burkhardt, H, Grupen, Claus, Meinhard, H, Mirabito, L, Neugebauer, E, Schäfer, U, Seywerd, H C J, Apollinari, G, Giannini, G, Gobbo, B, Liello, F, Rolandi, Luigi, Stiegler, U, Bellantoni, L, Boudreau, J F, Cinabro, D, Conway, J S, Cowen, D F, De Weerd, A J, Feng, Z, Ferguson, D P S, Gao, Y S, Grahl, J, Harton, J L, Hilgart, J M, Jacobsen, J E, Jared, R C, Johnson, R P, LeClaire, B W, Pater, J R, Saadi, Y, Sharma, V, Walsh, M A, Wear, J A, Weber, F V, Whitney, M H, Wu Sau Lan, Zho, Z L, Zobernig, G, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., P., Mato, R., Miquel, Mir, L. l. M., S., Orteu, A., Pacheco, J. A., Perla, E., Tubau, 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., Silvestri, 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, H., Albrecht, W. B., Atwood, F., Bird, E., Blucher, G., Bonvicini, F., Bossi, D., Brown, T. H., Burnett, H., Drevermann, F., Dydak, R. W., Forty, C., Grab, R., Hagelberg, S., Haywood, B., Jost, M., Kasemann, G., Kellner, J., Knobloch, A., Lacourt, I., Lehrau, T., Lohse, D., Lüke, A., Marchioro, M., Martinez, J., May, S., Menary, A., Minten, A., Miotto, J., Nash, P., Palazzi, F., Ranjard, G., Redlinger, A., Roth, J., Rothberg, H., Rotscheidt, W., von Rüden, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Falvard, R., El Fellou, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Massimo Brancaccio, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, L. A. T., Bauerdick, K., Kleinknecht, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, G., Lütjen, G., Lutz, W., Männer, H. G., Moser, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, G., de Bouard, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, V., Journé, D. W., Kim, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini Castaldi, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Lançon, E., Locci, S., Loucato, E., Monnier, P., Perez, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, A. J., Deweerd, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J., Hilgart, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan Wu Lan, Wu, Z. L., Zhou, and G., Zobernig

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Electron–positron annihilation, Hadron, Asymmetry, Resonance (particle physics), Renormalization, Nuclear physics, Particle, High Energy Physics::Experiment, Invariant mass, Event (particle physics), Particle Physics - Experiment, media_common
Abstract

Using 106 000 hadronic events obtained with the ALEPH detector at LEP at energies close to the Z resonance peak, the strong coupling constant αs is measured by an analysis of energy-energy correlations (EEC) and the global event shape variables thrust, C-parameter and oblateness. It is shown that the theoretical uncertainties can be significantly reduced if the final state particles are first combined in clusters using a minimum scaled invariant mass cut, Ycut, before these variables are computed. The combined result from all shape variables of pre-clustered events is αs(MZ2 = 0.117±0.005 for a renormalization scale μ= 1 2 M Z . For μ values between MZ and the b-quark mass, the result changes by −0.009+0.006.

Published
1991

8. Measurement of the B hadron lifetime

Author

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, P. Mato, R. Miquel, Ll.M. Mir, S. Orteu, A. Pacheco, J.A. Perlas, E. Tubau, 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, H. Albrecht, W.B. Atwood, F. Bird, E. Blucher, G. Bonvicini, F. Bossi, D. Brown, T.H. Burnett, H. Drevermann, F. Dydak, R.W. Forty, 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, J. Nash, P. Palazzi, F. Ranjard, G. Redlinger, A. Roth, J. Rothberg, H. Rotscheidt, W. von Rüden, R. St.Denis, D. Schlatter, M. Takashima, M. Talby, W. Tejessy, H. Wachsmuth, S. Wasserbaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Falvard, R. El Fellous, P. Gay, J. Harvey, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, E.R. Nielsen, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Massimo-Brancaccio, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I.ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, L.A.T. Bauerdick, K. Kleinknecht, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, W. Blum, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, G. Lütjens, G. Lutz, W. Männer, H.-G. Moser, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, G. de Bouard, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, Ph. Heusse, P. Janot, V. Journé, D.W. Kim, J. Lefrançois, J.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, A. Giassi, M.A. Giorgi, F. Ligabue, A. Lusiani, E.B. Mannelli, P.S. Marrocchesi, A. Messineo, L. Moneta, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini-Castaldi, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quazi, M.R. Saich, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fisher, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Lançon, E. Locci, S. Loucatos, E. Monnier, P. Perez, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.-P. Schuller, J. Schwindling, J.G. Ashan, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, E. Neugebauer, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, L. Rolandi, U. Stiegler, L. Bellantoni, J.F. Boudreau, D. Cinabro, J.S. Conway, D.F. Cowen, A.J. DeWeerd, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.L. Harton, J. Hilgart, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, M.A. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, Sau Lan Wu Lan Wu, Z.L. Zhou, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., P., Mato, R., Miquel, Mir, L. l. M., S., Orteu, A., Pacheco, J. A., Perla, E., Tubau, 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., Silvestri, 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, H., Albrecht, W. B., Atwood, F., Bird, E., Blucher, G., Bonvicini, F., Bossi, D., Brown, T. H., Burnett, H., Drevermann, F., Dydak, R. W., Forty, C., Grab, R., Hagelberg, S., Haywood, B., Jost, M., Kasemann, G., Kellner, J., Knobloch, A., Lacourt, I., Lehrau, T., Lohse, D., Lüke, A., Marchioro, M., Martinez, J., May, S., Menary, A., Minten, A., Miotto, J., Nash, P., Palazzi, F., Ranjard, G., Redlinger, A., Roth, J., Rothberg, H., Rotscheidt, W., von Rüden, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Falvard, R., El Fellou, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Massimo Brancaccio, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, L. A. T., Bauerdick, K., Kleinknecht, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, G., Lütjen, G., Lutz, W., Männer, H. G., Moser, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, G., de Bouard, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, V., Journé, D. W., Kim, J., Lefrançoi, J. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini Castaldi, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Lançon, E., Locci, S., Loucato, E., Monnier, P., Perez, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, J. G., Ashan, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, A. J., Deweerd, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J., Hilgart, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, M. A., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan Wu Lan, Wu, Z. L., Zhou, and G., Zobernig

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Elementary particle, Nuclear physics, High Energy Physics::Experiment, B meson, Impact parameter, Nuclear Experiment, ALEPH experiment, Particle Physics - Experiment, Lepton
Abstract

The average lifetime of B hadrons has been measured by the ALEPH experiment at LEP. Events containing B hadrons are selected by the identification of leptons with high transverse momentum in hadronic Z decays, and the lifetime is extracted from a fit to the impact parameter distribution of the lepton tracks. From a sample of 1.7×105 hadronic Z decays a lifetime of 1.29±0.06±0.10 ps is measured.

Published
1991

9. Improved measurements of electroweak parameters from Z decays into fermion pairs

Author

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, DEPALMA 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, BOUDREAU J, BROWN D, BURNETT TH, DREVERMANN H, FORTY RW, GRAB C, HAGELBERG R, HAYWOOD S, HILGART J, JOST B, KASEMANN M, KNOBLOCH J, LACOURT A, LANCON E, LEHRAUS I, LOHSE T, LUSIANI A, 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, SAICH M, DENIS RS, SCHLATTER D, TAKASHIMA M, TALBY M, TEJESSY W, WACHSMUTH H, WASSERBAECH S, WHEELER S, WIEDENMANN W, WITZELING W, WOTSCHACK J, AJALTOUNI Z, BARDADINOTWINOWSKA M, ELFELLOUS R, FALVARD A, GAY P, HARVEY J, HENRARD P, JOUSSET J, MICHEL B, MONTRET JC, PALLIN D, PERRET P, PRORIOL J, PRULHIERE F, STIMPFL G, HANSEN JD, HANSEN JR, HANSEN PH, MOLLERUD R, NILSSON BS, EFTHYMIOPOULOS I, SIMOPOULOU E, VAYAKI A, BADIER J, BLONDEL A, BONNEAUD G, BOUROTTE J, BRAEMS F, BRIENT JC, FOUQUE G, GAMESS A, GUIRLET R, ORTEU S, ROSOWSKY A, ROUGE A, RUMPF M, TANAKA R, VIDEAU H, CANDLIN DJ, VEITCH E, PARRINI G, CORDEN M, GEORGIOPOULOS C, IKEDA M, LANNUTTI J, LEVINTHAL D, MERMIKIDES M, SAWYER L, ANTONELLI A, BALDINI R, BENCIVENNI G, BOLOGNA G, CAMPANA P, CAPON G, CERUTTI F, CHIARELLA V, DETTORREPIAZZOLI B, FELICI G, LAURELLI P, MANNOCCHI G, MURTAS F, MURTAS GP, NICOLETTI G, PASSALACQUA L, PEPEALTARELLI M, PICCHI P, ZOGRAFOU P, ALTOON B, BOYLE O, HALLEY AW, TENHAVE I, HEARNS JL, LYNCH JG, MORTON WT, RAINE C, SCARR JM, SMITH K, THOMPSON AS, TURNBULL RM, BRANDL B, BRAUN O, GEIGES R, GEWENIGER C, HANKE P, HEPP V, KLUGE EE, MAUMARY Y, PUTZER A, RENSCH B, STAHL A, TITTEL K, WUNSCH M, BELK AT, BEUSELINCK R, BINNIE DM, CAMERON W, CATTANEO M, DORNAN PJ, DUGEAY S, GREENE AM, HASSARD JF, LIESKE NM, PATTON SJ, PAYNE DG, PHILLIPS MJ, SEDGBEER JK, TAYLOR G, TOMALIN IR, WRIGHT AG, GIRTLER P, KUHN D, RUDOLPH G, BOWDERY CK, BRODBECK TJ, FINCH AJ, FOSTER F, HUGHES G, KEEMER NR, NUTTALL M, PATEL A, ROWLINGSON BS, SLOAN T, SNOW SW, WHELAN EP, BARCZEWSKI T, KLEINKNECHT K, RAAB J, RENK B, ROEHN S, SANDER HG, SCHMELLING M, SCHMIDT H, STEEG F, WALTHER SM, WOLF B, ALBANESE JP, AUBERT JJ, BENCHOUK C, BERNARD V, BONISSENT A, COURVOISIER D, ETIENNE F, PAPALEXIOU S, PAYRE P, PIETRZYK B, QIAN Z, BECKER H, BLUM W, CATTANEO P, COWAN G, DEHNING B, DIETL H, DYDAK F, FERNANDEZBOSMAN M, HANSLKOZANECKA T, JAHN A, KOZANECKI W, LANGE E, LAUBER J, LUTJENS G, LUTZ G, MANNER W, PAN Y, RICHTER R, SCHRODER J, SCHWARZ AS, SETTLES R, STIERLIN U, THOMAS J, WOLF G, BERTIN V, BOUCROT J, CALLOT O, CHEN X, CORDIER A, DAVIER M, GANIS G, GRIVAZ JF, HEUSSE P, JANOT P, KIM DW, LEDIBERDER F, LEFRANCOIS J, LUTZ AM, VEILLET JJ, VIDEAU I, ZHANG Z, ZOMER F, ABBANEO D, AMENDOLIA SR, BAGLIESI G, BATIGNANI G, BOSISIO L, BOTTIGLI U, BRADASCHIA C, CARPINELLI, Massimo, CIOCCI MA, DELLORSO R, FERRANTE I, FIDECARO F, FOA L, FOCARDI E, FORTI F, GATTO C, GIASSI A, GIORGI MA, LIGABUE F, MANNELLI EB, MARROCCHESI PS, MESSINEO A, MONETA L, PALLA F, SANGUINETTI G, STEINBERGER J, TENCHINI R, TONELLI G, TRIGGIANI G, VANNINI C, VENTURI A, VERDINI PG, WALSH J, CARTER JM, GREEN MG, MARCH PV, MEDCALF T, QUAZI IS, STRONG JA, THOMAS RM, WEST LR, WILDISH T, BOTTERILL DR, CLIFFT RW, EDGECOCK TR, EDWARDS M, FISHER SM, JONES TJ, NORTON PR, SALMON DP, THOMPSON JC, BLOCHDEVAUX B, COLAS P, KLOPFENSTEIN C, LOCCI E, LOUCATOS S, MONNIER E, PEREZ P, PERLAS JA, PERRIER F, RANDER J, RENARDY JF, ROUSSARIE A, SCHULLER JP, SCHWINDLING J, VALLAGE B, ASHMAN JG, BOOTH CN, BUTTAR C, CARNEY R, CARTWRIGHT S, COMBLEY F, DINSDALE M, DOGRU M, HATFIELD F, MARTIN J, PARKER D, REEVES P, THOMPSON LF, BARBERIO E, BRANDT S, BURKHARDT H, GRUPEN C, MEINHARD H, MIRABITO L, SCHAFER U, SEYWERD H, APOLLINARI G, GIANNINI G, GOBBO B, LIELLO F, RAGUSA F, ROLANDI L, STIEGLER U, BELLANTONI L, CINABRO D, CONWAY JS, COWEN DF, FENG Z, FERGUSON DPS, GAO YS, GRAHL J, HARTON JL, JACOBSEN JE, JARED RC, JOHNSON RP, LECLAIRE BW, PAN YB, PATER JR, SAADI Y, SHARMA V, SHI ZH, TANG YH, WALSH AM, WEAR JA, WEBER FV, WHITNEY MH, WU SL, ZOBERNIG G., Decamp, D, Deschizeaux, B, Goy, C, Lees, J, Minard, M, Alemany, R, Crespo, J, Delfino, M, Fernandez, E, Gaitan, V, Garrido, L, Mir, L, Pacheco, A, Catanesi, M, Creanza, D, Depalma, 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, W, Bauerdick, L, Bird, F, Blucher, E, Bonvicini, G, Bossi, F, Boudreau, J, Brown, D, Burnett, T, Drevermann, H, Forty, R, Grab, C, Hagelberg, R, Haywood, S, Hilgart, J, Jost, B, Kasemann, M, Knobloch, J, Lacourt, A, Lancon, E, Lehraus, I, Lohse, T, Lusiani, A, Marchioro, A, Martinez, M, Mato, P, Menary, S, Minten, A, Miotto, A, Miquel, R, Moser, H, Nash, J, Palazzi, P, Ranjard, F, Redlinger, G, Roth, A, Rothberg, J, Rotscheidt, H, Saich, M, Denis, R, Schlatter, D, Takashima, M, Talby, M, Tejessy, W, Wachsmuth, H, Wasserbaech, S, Wheeler, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Z, Bardadinotwinowska, M, Elfellous, R, Falvard, A, Gay, P, Harvey, J, Henrard, P, Jousset, J, Michel, B, Montret, J, Pallin, D, Perret, P, Proriol, J, Prulhiere, F, Stimpfl, G, Hansen, J, Hansen, P, Mollerud, R, Nilsson, B, Efthymiopoulos, I, Simopoulou, E, Vayaki, A, Badier, J, Blondel, A, Bonneaud, G, Bourotte, J, Braems, F, Brient, J, Fouque, G, Gamess, A, Guirlet, R, Orteu, S, Rosowsky, A, Rouge, A, Rumpf, M, Tanaka, R, Videau, H, Candlin, D, Veitch, E, Parrini, G, Corden, M, Georgiopoulos, C, Ikeda, M, Lannutti, J, Levinthal, D, Mermikides, M, Sawyer, L, Antonelli, A, Baldini, R, Bencivenni, G, Bologna, G, Campana, P, Capon, G, Cerutti, F, Chiarella, V, Dettorrepiazzoli, B, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G, Nicoletti, G, Passalacqua, L, Pepealtarelli, M, Picchi, P, Zografou, P, Altoon, B, Boyle, O, Halley, A, Tenhave, I, Hearns, J, Lynch, J, Morton, W, Raine, C, Scarr, J, Smith, K, Thompson, A, Turnbull, R, Brandl, B, Braun, O, Geiges, R, Geweniger, C, Hanke, P, Hepp, V, Kluge, E, Maumary, Y, Putzer, A, Rensch, B, Stahl, A, Tittel, K, Wunsch, M, Belk, A, Beuselinck, R, Binnie, D, Cameron, W, Cattaneo, M, Dornan, P, Dugeay, S, Greene, A, Hassard, J, Lieske, N, Patton, S, Payne, D, Phillips, M, Sedgbeer, J, Taylor, G, Tomalin, I, Wright, A, Girtler, P, Kuhn, D, Rudolph, G, Bowdery, C, Brodbeck, T, Finch, A, Foster, F, Hughes, G, Keemer, N, Nuttall, M, Patel, A, Rowlingson, B, Sloan, T, Snow, S, Whelan, E, Barczewski, T, Kleinknecht, K, Raab, J, Renk, B, Roehn, S, Sander, H, Schmelling, M, Schmidt, H, Steeg, F, Walther, S, Wolf, B, Albanese, J, Aubert, J, Benchouk, C, Bernard, V, Bonissent, A, Courvoisier, D, Etienne, F, Papalexiou, S, Payre, P, Pietrzyk, B, Qian, Z, Becker, H, Blum, W, Cattaneo, P, Cowan, G, Dehning, B, Dietl, H, Dydak, F, Fernandezbosman, M, Hanslkozanecka, T, Jahn, A, Kozanecki, W, Lange, E, Lauber, J, Lutjens, G, Lutz, G, Manner, W, Pan, Y, Richter, R, Schroder, J, Schwarz, A, Settles, R, Stierlin, U, Thomas, J, Wolf, G, Bertin, V, Boucrot, J, Callot, O, Chen, X, Cordier, A, Davier, M, Ganis, G, Grivaz, J, Heusse, P, Janot, P, Kim, D, Lediberder, F, Lefrancois, J, Lutz, A, Veillet, J, Videau, I, Zhang, Z, Zomer, F, Abbaneo, D, Amendolia, S, Bagliesi, G, Batignani, G, Bosisio, L, Bottigli, U, Bradaschia, C, Carpinelli, M, Ciocci, M, Dellorso, R, Ferrante, I, Fidecaro, F, Foa, L, Focardi, E, Forti, F, Gatto, C, Giassi, A, Giorgi, M, Ligabue, F, Mannelli, E, Marrocchesi, P, Messineo, A, Moneta, L, Palla, F, Sanguinetti, G, Steinberger, J, Tenchini, R, Tonelli, G, Triggiani, G, Vannini, C, Venturi, A, Verdini, P, Walsh, J, Carter, J, Green, M, March, P, Medcalf, T, Quazi, I, Strong, J, Thomas, R, West, L, Wildish, T, Botterill, D, Clifft, R, Edgecock, T, Edwards, M, Fisher, S, Jones, T, Norton, P, Salmon, D, Thompson, J, Blochdevaux, B, Colas, P, Klopfenstein, C, Locci, E, Loucatos, S, Monnier, E, Perez, P, Perlas, J, Perrier, F, Rander, J, Renardy, J, Roussarie, A, Schuller, J, Schwindling, J, Vallage, B, Ashman, J, Booth, C, Buttar, C, Carney, R, Cartwright, S, Combley, F, Dinsdale, M, Dogru, M, Hatfield, F, Martin, J, Parker, D, Reeves, P, Thompson, L, Barberio, E, Brandt, S, Burkhardt, H, Grupen, C, Meinhard, H, Mirabito, L, Schafer, U, Seywerd, H, Apollinari, G, Giannini, G, Gobbo, B, Liello, F, Ragusa, F, Rolandi, L, Stiegler, U, Bellantoni, L, Cinabro, D, Conway, J, Cowen, D, Feng, Z, Ferguson, D, Grahl, J, Harton, J, Jacobsen, J, Jared, R, Johnson, R, Leclaire, B, Pater, J, Saadi, Y, Sharma, V, Shi, Z, Tang, Y, Walsh, A, Wear, J, Weber, F, Whitney, M, Wu, S, Zobernig, G, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., A., Pacheco, M. G., Catanesi, D., Creanza, M., 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., Silvestri, 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., Bonyicini, F., Bossi, J., Boudreau, 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., Lan�on, I., Lehrau, T., Lohse, A., Lusiani, 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, M., Saich, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, R., Fellou, A., Falvard, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhi�re, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., M�llerud, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Roug�, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., L�tjen, G., Lutz, W., M�nner, Y., Pan, R., Richter, J., Schr�der, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Diberder, J., Lefran�oi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Fo�, E., Focardi, F., Forti, C., Gatto, A., Giassi, M. A., Giorgi, F., Ligabue, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, E., Barberio, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, U., Sch�fer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Claire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, G., Zobernig, Lees, Jp, Minard, Mn, Crespo, Jm, Mir, Lm, Catanesi, Mg, Atwood, Wb, Bauerdick, Lat, Burnett, Th, Forty, Rw, Lusiani, Alberto, Moser, Hg, Montret, Jc, Hansen, Jd, Hansen, Jr, Hansen, Ph, Brient, Jc, Candlin, Dj, Murtas, Gp, Halley, Aw, Hearns, Jl, Lynch, Jg, Morton, Wt, Scarr, Jm, Turnbull, Rm, Kluge, Ee, Belk, At, Binnie, Dm, Dornan, Pj, Greene, Am, Hassard, Jf, Lieske, Nm, Patton, Sj, Payne, Dg, Phillips, Mj, Sedgbeer, Jk, Tomalin, Ir, Wright, Ag, Bowdery, Ck, Brodbeck, Tj, Finch, Aj, Keemer, Nr, Snow, Sw, Whelan, Ep, Sander, Hg, Walther, Sm, Albanese, Jp, Aubert, Jj, Grivaz, Jf, Kim, Dw, Lutz, Am, Veillet, Jj, Amendolia, Sr, Ciocci, Ma, Giorgi, Ma, Ligabue, Franco, Mannelli, Eb, Verdini, Pg, Carter, Jm, Green, Mg, March, Pv, Strong, Ja, Thomas, Rm, West, Lr, Botterill, Dr, Clifft, Rw, Edgecock, Tr, Fisher, Sm, Jones, Tj, Norton, Pr, Salmon, Dp, Thompson, Jc, Perlas, Ja, Renardy, Jf, Schuller, Jp, Ashman, Jg, Booth, Cn, Thompson, Lf, Cowen, Df, Ferguson, Dp, Harton, Jl, Jacobsen, Je, Jared, Rc, Johnson, Rp, Leclaire, Bw, Pan, Yb, Pater, Jr, Shi, Zh, Tang, Yh, Walsh, Am, Wear, Ja, Weber, Fv, Whitney, Mh, Wu, Sl, and Zobernig, G.

Subjects
Quark, Physics, Particle physics, Physics and Astronomy (miscellaneous), Electron–positron annihilation, High Energy Physics::Phenomenology, Electroweak interaction, Elementary particle, Weinberg angle, Fermion, ALEPH detector, Nuclear physics, High Energy Physics::Experiment, Neutrino, Engineering (miscellaneous), Particle Physics - Experiment, Lepton
Abstract

The properties of the Z resonance are measured on the basis of 190000 Z decays into fermion pairs collected with the ALEPH detector at LEP. Assuming lepton universality, M(Z) = (91.182 +/- 0.009exp +/- 0.020L;P) GeV, GAMMA(Z) = (2484 +/- 17) MeV, sigma(had)0 = (41.44 +/- 0.36) nb, and GAMMA(had)/GAMMA(ll) = 21.00 +/- 0.20. The corresponding number of light neutrino species is 2.97 +/- 0.07. The forward-backward asymmetry in leptonic decays is used to determine the ratio of vector to axial-vector coupling constants of leptons: g(V)2(M(Z)2)/g(A)2(M(Z)2) = 0.0072 +/- 0.0027. Combining these results with ALEPH results on quark charge and bbBAR asymmetries, and tau-polarization, sin2 theta(W)(M(Z)2) = 0.2312 +/- 0.0018. In the context of the Minimal Standard Model, limits are placed on the top-quark mass.

Published
1992

10. Measurement of the absolute luminosity with the ALEPH detector

Author

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, DEPALMA 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, BOUDREAU J, BROWN D, BURNETT TH, DREVERMANN H, FORTY RW, GRAB C, HAGELBERG R, HAYWOOD S, HILGART J, JOST B, KASEMANN M, KNOBLOCH J, LACOURT A, LANCON 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, SAICH M, SCHLATTER D, SCHMELLING M, TAKASHIMA M, TEJESSY W, WACHSMUTH H, WASSERBAECH S, WIEDENMANN W, WITZELING W, WOTSCHACK J, AJALTOUNI Z, BADAUD F, BARADADINOTWINOWSKA M, BENCHEIKH AM, ELFELLOUS R, FALVARD A, GAY P, GUICHENEY C, HARVEY J, HENRARD P, JOUSSET J, MICHEL B, MONTRET JC, PALLIN D, PERRET P, PRORIOL J, PRULHIERE F, STIMPFL G, BERTELSEN H, HANSEN F, HANSEN JD, HANSEN JR, HANSEN PH, LINDHAL A, MOLLERUD R, NILSSON BS, PETERSEN G, EFTHYMIOPOULOS I, SIMOPOULOU E, VAYAKI A, BADIER J, BLONDEL A, BONNEAUD G, BOUROTTE J, BRAEMS F, BRIENT JC, FOUQUE G, GAMESS A, GUIRLET R, ORTEU S, ROSOWSKY A, ROUGE A, RUMPF M, TANAKA R, VIDEAU H, CANDLIN DJ, VEITCH E, MONETA L, PARRINI G, CORDEN M, GEORGIOPOULOS C, IKEDA M, LANNUTTI J, LEVINTHAL D, MERMIKIDES M, SAWYER L, ANTONELLI A, BALDINI R, BENCIVENNI G, BOLOGNA G, CAMPANA P, CAPON G, CERUTTI F, CHIARELLA V, DETTORREPIAZZOLI B, FELICI G, LAURELLI P, MANNOCCHI G, MURTAS F, MURTAS GP, PASSALACQUA L, PEPEALTARELLI M, PICCHI P, ZOGRAFOU P, ALTOON B, BOYLE O, HALLEY AW, TENHAVE I, HEARNS JL, LYNCH JG, MORTON WT, RAINE C, SCARR JM, SMITH K, THOMPSON AS, TURNBULL RM, BRANDL B, BRAUN O, GEIGES R, GEWENIGER C, HANKE P, HEPP V, KLUGE EE, MAUMARY Y, PUTZER A, RENSCH B, STAHL A, TITTEL K, WUNSCH M, BELK AT, BEUSELINCK R, BINNIE DM, CAMERON W, CATTANEO M, DORNAN PJ, DUGEAY S, GREENE AM, HASSARD JF, LIESKE NM, PATTON SJ, PAYNE DG, PHILLIPS MJ, SEDGBEER JK, TAYLOR G, TOMALIN IR, WRIGHT AG, GIRTLER P, KUHN D, RUDOLPH G, BOWDERY CK, BRODBECK TJ, FINCH AJ, FOSTER F, HUGHES G, KEEMER NR, NUTTALL M, PATEL A, ROWLINGSON BS, SLOAN T, SNOW SW, WHELAN EP, BARCZEWSKI T, KLEINKNECHT K, RAAB J, RENK B, ROEHN S, SANDER HG, SCHMIDT H, STEEG F, WALTHER SM, WOLF B, AUBERT JJ, BENCHOUK C, BERNARD V, BONISSENT A, CARR J, COYLE P, DRINKARD J, ETIENNE F, PAPALEXIOU S, PAYRE P, PIETRZYK B, QIAN Z, ROUSSEAU D, SCHWEMLING P, TALBY M, BECKER H, BLUM W, CATTANEO P, COWAN G, DEHNING B, DIETL H, DYDAK F, FERNANDEZBOSMAN M, HANSLKOZANECKA T, JAHN A, KOZANECKI W, LANGE E, LAUBER J, LUTJENS G, LUTZ G, MANNER W, PAN Y, RICHTER R, SCHRODER J, SCHWARZ AS, SETTLES R, STIERLIN U, STDENIS R, THOMAS J, WOLF G, BERTIN V, BOUCROT J, CALLOT O, CHEN X, CORDIER A, DAVIER M, GANIS G, GRIVAZ JF, HEUSSE P, JANOT P, KIM DW, LEDIBERDER F, LEFRANCOIS J, LUTZ AM, VEILLET JJ, VIDEAU I, ZHANG Z, ZOMER F, ABBANEO D, AMENDOLIA SR, BAGLIESI G, BATIGNANI G, BOSISIO L, BOTTIGLI U, BRADASCHIA C, CARPINELLI M, CIOCCI MA, DELLORSO R, FERRANTE I, FIDECARO F, FOA L, FOCARDI E, FORTI F, GATTO C, GIASSI A, GIORGI MA, MANNELLI EB, MARROCCHESI PS, MESSINEO A, PALLA F, SANGUINETTI G, STEINBERGER J, TENCHINI R, TONELLI G, TRIGGIANI G, VANNINI C, VENTURI A, VERDINI PG, WALSH J, CARTER JM, GREEN MG, MARCH PV, MEDCALF T, QUAZI IS, STRONG JA, THOMAS RM, WEST LR, WILDISH T, BOTTERILL DR, CLIFFT RW, EDGECOCK TR, EDWARDS M, FISHER SM, JONES TJ, NORTON PR, SALMON DP, THOMPSON JC, BLOCHDEVAUX B, COLAS P, KLOPFENSTEIN C, LOCCI E, LOUCATOS S, MONNIER E, PEREZ P, PERLAS JA, PERRIER F, RANDER J, RENARDY JF, ROUSSARIE A, SCHULLER JP, SCHWINDLING J, VALLAGE B, ASHMAN JG, BOOTH CN, BUTTAR C, CARNEY R, CARTWRIGHT S, COMBLEY F, DINSDALE M, DOGRU M, HATFIELD F, MARTIN J, PARKER D, REEVES P, THOMPSON LF, BACH E, BARBERIO E, BRANDT S, BURKHARDT H, GILLESSEN G, GRUPEN C, HEITNER G, MEINHARD H, MIRABITO L, SCHAFER U, SEYWERD H, STUPPERICH C, TRIER H, ZEUNER V, GIANNINI G, GOBBO B, RAGUSA F, ROLANDI L, STIEGLER U, BELLANTONI L, CINABRO D, CONWAY JS, COWEN DF, FENG Z, FERGUSON DPS, GAO YS, GRAHL J, HARTON JL, JACOBSEN JE, JARED RC, JOHNSON RP, LECLAIRE BW, PAN YB, PATER JR, SAADI Y, SHARMA V, SHI ZH, TANG YH, WALSH AM, WEAR JA, WEBER FV, WHITNEY MH, WU SL, ZOBERNIG G, RI Perrier Frederic/A 5953 2011 ANTONELLI ANTONELLA/C 6238 2011 Buttar Craig/D 3706 2011 Stahl Achim/E 8846 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S.t. Denis Richard/C 8997 2012 Forti Francesco/H 3035 2011 Ferrante Isidoro/F 1017 2012, LUSIANI, Alberto, LIGABUE, FRANCO, Decamp, D, Deschizeaux, B, Goy, C, Lees, J, Minard, M, Alemany, R, Crespo, J, Delfino, M, Fernandez, E, Gaitan, V, Garrido, L, Mir, L, Pacheco, A, Catanesi, M, Creanza, D, Depalma, 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, W, Bauerdick, L, Bird, F, Blucher, E, Bonvicini, G, Bossi, F, Boudreau, J, Brown, D, Burnett, T, Drevermann, H, Forty, R, Grab, C, Hagelberg, R, Haywood, S, Hilgart, J, Jost, B, Kasemann, M, Knobloch, J, Lacourt, A, Lancon, E, Lehraus, I, Lohse, T, Lusiani, A, Marchioro, A, Martinez, M, Mato, P, Menary, S, Minten, A, Miotto, A, Miquel, R, Moser, H, Nash, J, Palazzi, P, Ranjard, F, Redlinger, G, Roth, A, Rothberg, J, Rotscheidt, H, Saich, M, Schlatter, D, Schmelling, M, Takashima, M, Tejessy, W, Wachsmuth, H, Wasserbaech, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Z, Badaud, F, Baradadinotwinowska, M, Bencheikh, A, Elfellous, R, Falvard, A, Gay, P, Guicheney, C, Harvey, J, Henrard, P, Jousset, J, Michel, B, Montret, J, Pallin, D, Perret, P, Proriol, J, Prulhiere, F, Stimpfl, G, Bertelsen, H, Hansen, F, Hansen, J, Hansen, P, Lindhal, A, Mollerud, R, Nilsson, B, Petersen, G, Efthymiopoulos, I, Simopoulou, E, Vayaki, A, Badier, J, Blondel, A, Bonneaud, G, Bourotte, J, Braems, F, Brient, J, Fouque, G, Gamess, A, Guirlet, R, Orteu, S, Rosowsky, A, Rouge, A, Rumpf, M, Tanaka, R, Videau, H, Candlin, D, Veitch, E, Moneta, L, Parrini, G, Corden, M, Georgiopoulos, C, Ikeda, M, Lannutti, J, Levinthal, D, Mermikides, M, Sawyer, L, Antonelli, A, Baldini, R, Bencivenni, G, Bologna, G, Campana, P, Capon, G, Cerutti, F, Chiarella, V, Dettorrepiazzoli, B, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G, Passalacqua, L, Pepealtarelli, M, Picchi, P, Zografou, P, Altoon, B, Boyle, O, Halley, A, Tenhave, I, Hearns, J, Lynch, J, Morton, W, Raine, C, Scarr, J, Smith, K, Thompson, A, Turnbull, R, Brandl, B, Braun, O, Geiges, R, Geweniger, C, Hanke, P, Hepp, V, Kluge, E, Maumary, Y, Putzer, A, Rensch, B, Stahl, A, Tittel, K, Wunsch, M, Belk, A, Beuselinck, R, Binnie, D, Cameron, W, Cattaneo, M, Dornan, P, Dugeay, S, Greene, A, Hassard, J, Lieske, N, Patton, S, Payne, D, Phillips, M, Sedgbeer, J, Taylor, G, Tomalin, I, Wright, A, Girtler, P, Kuhn, D, Rudolph, G, Bowdery, C, Brodbeck, T, Finch, A, Foster, F, Hughes, G, Keemer, N, Nuttall, M, Patel, A, Rowlingson, B, Sloan, T, Snow, S, Whelan, E, Barczewski, T, Kleinknecht, K, Raab, J, Renk, B, Roehn, S, Sander, H, Schmidt, H, Steeg, F, Walther, S, Wolf, B, Aubert, J, Benchouk, C, Bernard, V, Bonissent, A, Carr, J, Coyle, P, Drinkard, J, Etienne, F, Papalexiou, S, Payre, P, Pietrzyk, B, Qian, Z, Rousseau, D, Schwemling, P, Talby, M, Becker, H, Blum, W, Cattaneo, P, Cowan, G, Dehning, B, Dietl, H, Dydak, F, Fernandezbosman, M, Hanslkozanecka, T, Jahn, A, Kozanecki, W, Lange, E, Lauber, J, Lutjens, G, Lutz, G, Manner, W, Pan, Y, Richter, R, Schroder, J, Schwarz, A, Settles, R, Stierlin, U, Stdenis, R, Thomas, J, Wolf, G, Bertin, V, Boucrot, J, Callot, O, Chen, X, Cordier, A, Davier, M, Ganis, G, Grivaz, J, Heusse, P, Janot, P, Kim, D, Lediberder, F, Lefrancois, J, Lutz, A, Veillet, J, Videau, I, Zhang, Z, Zomer, F, Abbaneo, D, Amendolia, S, Bagliesi, G, Batignani, G, Bosisio, L, Bottigli, U, Bradaschia, C, Carpinelli, M, Ciocci, M, Dellorso, R, Ferrante, I, Fidecaro, F, Foa, L, Focardi, E, Forti, F, Gatto, C, Giassi, A, Giorgi, M, Ligabue, F, Mannelli, E, Marrocchesi, P, Messineo, A, Palla, F, Sanguinetti, G, Steinberger, J, Tenchini, R, Tonelli, G, Triggiani, G, Vannini, C, Venturi, A, Verdini, P, Walsh, J, Carter, J, Green, M, March, P, Medcalf, T, Quazi, I, Strong, J, Thomas, R, West, L, Wildish, T, Botterill, D, Clifft, R, Edgecock, T, Edwards, M, Fisher, S, Jones, T, Norton, P, Salmon, D, Thompson, J, Blochdevaux, B, Colas, P, Klopfenstein, C, Locci, E, Loucatos, S, Monnier, E, Perez, P, Perlas, J, Perrier, F, Rander, J, Renardy, J, Roussarie, A, Schuller, J, Schwindling, J, Vallage, B, Ashman, J, Booth, C, Buttar, C, Carney, R, Cartwright, S, Combley, F, Dinsdale, M, Dogru, M, Hatfield, F, Martin, J, Parker, D, Reeves, P, Thompson, L, Bach, E, Barberio, E, Brandt, S, Burkhardt, H, Gillessen, G, Grupen, C, Heitner, G, Meinhard, H, Mirabito, L, Schafer, U, Seywerd, H, Stupperich, C, Trier, H, Zeuner, V, Giannini, G, Gobbo, B, Ragusa, F, Rolandi, L, Stiegler, U, Bellantoni, L, Cinabro, D, Conway, J, Cowen, D, Feng, Z, Ferguson, D, Grahl, J, Harton, J, Jacobsen, J, Jared, R, Johnson, R, Leclaire, B, Pater, J, Saadi, Y, Sharma, V, Shi, Z, Tang, Y, Walsh, A, Wear, J, Weber, F, Whitney, M, Wu, S, Zobernig, G, Lees, Jp, Minard, Mn, Crespo, Jm, Mir, Lm, Catanesi, Mg, Atwood, Wb, Bauerdick, Lat, Burnett, Th, Forty, Rw, Lusiani, Alberto, Moser, Hg, Bencheikh, Am, Montret, Jc, Hansen, Jd, Hansen, Jr, Hansen, Ph, Brient, Jc, Candlin, Dj, Murtas, Gp, Halley, Aw, Hearns, Jl, Lynch, Jg, Morton, Wt, Scarr, Jm, Turnbull, Rm, Kluge, Ee, Belk, At, Binnie, Dm, Dornan, Pj, Greene, Am, Hassard, Jf, Lieske, Nm, Patton, Sj, Payne, Dg, Phillips, Mj, Sedgbeer, Jk, Tomalin, Ir, Wright, Ag, Bowdery, Ck, Brodbeck, Tj, Finch, Aj, Keemer, Nr, Snow, Sw, Whelan, Ep, Sander, Hg, Walther, Sm, Aubert, Jj, Grivaz, Jf, Kim, Dw, Lutz, Am, Veillet, Jj, Amendolia, Sr, Ciocci, Ma, Giorgi, Ma, Ligabue, Franco, Mannelli, Eb, Verdini, Pg, Carter, Jm, Green, Mg, March, Pv, Strong, Ja, Thomas, Rm, West, Lr, Botterill, Dr, Clifft, Rw, Edgecock, Tr, Fisher, Sm, Jones, Tj, Norton, Pr, Salmon, Dp, Thompson, Jc, Perlas, Ja, Renardy, Jf, Schuller, Jp, Ashman, Jg, Booth, Cn, Thompson, Lf, Cowen, Df, Ferguson, Dp, Harton, Jl, Jacobsen, Je, Jared, Rc, Johnson, Rp, Leclaire, Bw, Pan, Yb, Pater, Jr, Shi, Zh, Tang, Yh, Walsh, Am, Wear, Ja, Weber, Fv, Whitney, Mh, Wu, Sl, Denis Richard/C 8997 2012 Forti Francesco/H 3035 2011 Ferrante Isidoro/F 1017 2012, RI Perrier Frederic/A 5953 2011 ANTONELLI ANTONELLA/C 6238 2011 Buttar Craig/D 3706 2011 Stahl Achim/E 8846 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S. t., D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., A., Pacheco, M. G., Catanesi, D., Creanza, M., 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., Silvestri, 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, J., Boudreau, 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., Lehrau, T., Lohse, A., Lusiani, 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, M., Saich, D., Schlatter, M., Schmelling, M., Takashima, W., Tejessy, H., Wachsmuth, S., Wasserbaech, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, F., Badaud, M., Bardadin Otwinowska, A. M., Bencheikh, R., Fellou, A., Falvard, P., Gay, C., Guicheney, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, H., Bertelsen, F., Hansen, J. D., Hansen, J. R., Hansen, P. H., Hansen, A., Lindhal, R., Møllerud, B. S., Nilsson, G., Petersen, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, L., Moneta, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, J., Carr, P., Coyle, J., Drinkard, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, D., Rousseau, P., Schwemling, M., Talby, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, Denis, R. S. t., J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, C., Gatto, A., Giassi, M. A., Giorgi, F., Ligabue, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, E., Bach, E., Barberio, S., Brandt, H., Burkhardt, G., Gillessen, C., Grupen, G., Heitner, H., Meinhard, L., Mirabito, U., Schäfer, H., Seywerd, C., Stupperich, H., Trier, V., Zeuner, G., Giannini, B., Gobbo, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, and G., Zobernig

Subjects
Systematic error, Physics, Aleph, Particle physics, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Detector, Bremsstrahlung, Astrophysics::Cosmology and Extragalactic Astrophysics, Calorimeter, ALEPH detector, Nuclear physics, High Energy Physics::Experiment, Engineering (miscellaneous), Particle Physics - Experiment, Astrophysics::Galaxy Astrophysics
Abstract

We report on the absolute luminosity measurement performed with the ALEPH detector at LEP. The systematic errors of the measurements in 1990 are estimated to be 0.6% (experimental) and 0.3% (theoretical).

Published
1992

11. Search for a new weakly interacting particle

Author

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, P. Mato, Mir Ll.M., 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, F. Bird, E. Blucher, G. Bonvicini, F. Bossi, D. Brown, T.H. Burnett, H. Drevermann, F. Dydak, 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, S. Menary, A. Minten, A. Miotto, R. Miguel, 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, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Falvard, R. El Fellous, P. Gay, J. Harvey, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, E.R. Nielsen, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, S. Orteu, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I. ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, L.A.T. Bauerdick, K. Kleinknecht, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, H. Becker, W. Blum, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, J. Lauber, G. Lütjens, G. Lutz, W. Männer, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, Ph. Heusse, P. Janot, D.W. Kim, F. Le Diberder, J. Lefrançois, A.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, A. Giassi, M.A. Giorgi, F. Ligabue, A. Lusiani, E.B. Mannelli, P.S. Marrocchesi, A. Messineo, L. Moneta, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quazi, M.R. Saich, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fisher, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Locci, S. Loucatos, E. Monnier, P. Perez, J.A. Perlas, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.-P. Schuller, J. Schwindling, B. Vallage, J.G. Ashman, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, E. Neugebauer, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, F. Ragusa, L. Rolandi, U. Stiegler, L. Bellantoni, J.F. Boudreau, D. Cinabro, J.S. Conway, D.F. Cowen, A.J. DeWeerd, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.L. Harton, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, A.M. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, null Sau Lan Wu, Z.L. Zhou, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., P., Mato, Mir, L. l. M., 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., Silvestri, 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, F., Bird, E., Blucher, G., Bonvicini, F., Bossi, D., Brown, T. H., Burnett, H., Drevermann, F., Dydak, R. W., Forty, C., Grab, R., Hagelberg, S., Haywood, J., Hilgart, B., Jost, M., Kasemann, J., Knobloch, A., Lacourt, E., Lançon, I., Lehrau, T., Lohse, A., Marchioro, M., Martinez, S., Menary, A., Minten, A., Miotto, R., Miguel, H. G., Moser, J., Nash, P., Palazzi, F., Ranjard, G., Redlinger, A., Roth, J., Rothberg, H., Rotscheidt, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Falvard, R., El Fellou, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, L. A. T., Bauerdick, K., Kleinknecht, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, A. J., Deweerd, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, Z. L., Zhou, and G., Zobernig

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Aleph, Particle physics, Gauge boson, Isospin, Electron–positron annihilation, High Energy Physics::Phenomenology, Higgs boson, High Energy Physics::Experiment, Particle Physics - Experiment, Lepton
Abstract

A search for events of the type e + e − →l + l − X 0 , where X 0 can be any weakly interacting particle which couples to the Z, has been performed with the ALEPH detector at LEP, by searching for acollinear lepton pairs. Such particles can be excluded up to a mass of 7.0 GeV/c 2 for a value of the ratio of branching fractions, Br( Z →X 0 l + l − )/Br(Z→ l + l − ), greater than 2.5 × 10 −3 if the X 0 has third component of isospin, I 3 greater than 1 2 and decays to a pair of virtual gauge bosons. When this analysis is combined with the previous results of the Higgs particle searches from ALEPH, this limit can be extended to an X 0 mass of 60 GeV/c 2 .

Published
1991

12. Measurement of isolated photon production in hadronic Z decays

Author

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, J. Boudreau, 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. Lusiani, 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. Rotsheidt, M. Saich, R. St.Denis, D. Schlatter, M. Takashima, M. Talby, W. Tejessy, H. Wachsmuth, S. Wasserbaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, R. El Fellous, A. Falvard, P. Gay, J. Harvey, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, S. Orteu, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, F. Cerutti, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I. ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, K. Kleinknecht, J. Raab, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, S.M. Walther, B. Wolf, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, H. Becker, W. Blum, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, F. Dydak, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, J. Lauber, G. Lütjens, G. Lutz, W. Männer, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, Ph. Heusse, P. Janot, D.W. Kim, F. Le Diberder, J. Lefrançois, A.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, D. Abbaneo, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, A. Giassi, M.A. Giorgi, F. Ligabue, E.B. Mannelli, P.S. Marrocchesi, A. Messineo, L. Moneta, F. Palla, G. Sanguinetti, J. Steinberger, R. Tecchini, G. Tonelli, G. Triggiani, C. Vannini, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quasi, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fisher, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Locci, S. Loucatos, E. Monnier, P. Perez, J.A. Perlas, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.-P. Schuller, J. Schwindling, B. Vallage, J.G. Ashman, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, E. Barberio, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, F. Ragusa, L. Rolandi, U. Stiegler, L. Bellantoni, D. Cinabro, J.S. Conway, D.F. Cowen, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.L. Harton, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, Z.H. Shi, Y.H. Tang, A.M. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, null Sau Lan Wu, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., 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., Silvestri, 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, J., Boudreau, 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., Lehrau, T., Lohse, A., Lusiani, 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., Rotsheidt, M., Saich, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, R., El Fellou, A., Falvard, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tecchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quasi, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, E., Barberio, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, and G., Zobernig

Subjects
Physics, Quark, Quantum chromodynamics, Nuclear and High Energy Physics, Aleph, Particle physics, Photon, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, Detector, Hadron, Parton, Radiation, Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

The production of high energy isolated photons in hadronic Z decays is measured with the ALEPH detector at LEP using a sample of 180 000 hadronic events. Such photons are mainly radiated by quarks, thus giving direct insights into the early parton showering mechanism. The observed rate is compared with a QCD calculation of final state radiation from quarks.

Published
1991

13. Measurement of the polarization of τ leptons produced in Z decays

Author

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, J. Boudreau, 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, M. Saich, R. St.Denis, D. Schlatter, M. Takashima, M. Talby, W. Tejessy, H. Wachsmuth, S. Wasserbaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, R. El Fellous, A. Falvard, P. Gay, J. Harvey, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, S. Orteu, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, F. Cerutti, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I. ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, W. Hermann, E.E. Kluge, J. Liebmann, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, K. Kleinknecht, J. Raab, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, S.M. Walther, B. Wolf, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, H. Becker, W. Blum, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, F. Dydak, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, J. Lauber, G. Lütjens, G. Lutz, W. Männer, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, Ph. Heusse, P. Janot, D.W. Kim, F. Le Diberder, J. Lefrançois, A.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, D. Abbaneo, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, A. Giassi, M.A. Giorgi, F. Ligabue, A. Lusiani, E.B. Mannelli, P.S. Marrocchesi, A. Messineo, L. Moneta, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quazi, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fisher, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Locci, S. Loucatos, E. Monnier, P. Perez, J.A. Perlas, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.-P. Schuller, J. Schwindling, B. Vallage, J.G. Ashman, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, E. Barberio, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, F. Ragusa, L. Rolandi, U. Stiegler, L. Bellantoni, D. Cinabro, J.S. Conway, D.F. Cowen, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.L. Harton, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, Z.H. Shi, Y.H. Tang, A.M. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, null Sau Lan Wu, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., 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., Silvestri, 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, J., Boudreau, 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., Lehrau, 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, M., Saich, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, R., El Fellou, A., Falvard, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, W., Hermann, E. E., Kluge, J., Liebmann, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, E., Barberio, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, and G., Zobernig

Subjects
Coupling constant, Physics, Nuclear and High Energy Physics, Particle physics, Neutral current, Electron–positron annihilation, Electroweak interaction, Weinberg angle, Parity (physics), Pseudovector, Particle Physics - Experiment, Lepton
Abstract

The polarization of τ leptons produced in the reaction e+e−→τ+τ− at the Z resonance has been measured using the τ decay modes eνeντ, μνμντ, πντ, ϱντ, and a1ντ. The mean value obtained is Pτ = −0.152±0.045, indicating that parity is violated in the neutral current process e+e− → τ+τ−. The result corresponds to a ratio of a neutral current vector and axial vector coupling constants of the τ lepton g V τ (M 2 Z ) g A τ (M 2 Z ) = 0.076±0.023 and a value of the electroweak mixing parameter sin2θw(M2Z) = 0.2302 ± 0.0058.

Published
1991

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

Author

Decamp, D., Deschizeaux, B., Goy, C., Lees, J., Minard, M., Alemany, R., Crespo, J., Delfino, M., Fernandez, E., Gaitan, V., Garrido, L., Mir, L., Pacheco, A., Catanesi, M., Creanza, D., Palma, M. D., Farilla, A., Iaselli, G. a., 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, W. a., Bauerdick, L., Bird, F., Blucher, E., Bonvicini, G., Bossi, F., Brown, D., Burnett, T. a., Drevermann, H., Forty, R., 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, H., Nash, J., Palazzi, P., Ranjard, F., Redlinger, G., Roth, A., Rothberg, J. a., Rotscheidt, H., Denis, R. S. t., Schlatter, D., Takashima, M., Talby, M. a., Tejessy, W., Wachsmuth, H., Wasserbaech, S., Wheeler, S., Wiedenmann, W., Witzeling, W., Wotschack, J., W. a., Aj, Ajaltounif, Bardadin Otwinowska, M., Falvard, A., Fellous, R. E., Gay, P., Harvey, J., Henrard, P., Jousset, J., Michel, B., Montret, J., Pallin, D., Perret, P., Proriol, J., Prulhière, F., Stimpfl, G., Hansen, J., Hansen, P., Møllerud, R., Nielsen, E., Nilsson, B., Efthymiopoulos, I., Simopoulou, E., Vayaki, A., Badier, J., Blondel, A., Bonneaud, G., Bourotte, J., Braems, F., Brient, J., Fouque, G., Gamess, A., Guirlet, R., Orteu, S., Rosowsky, A., Rougé, A., Rumpf, M., Tanaka, R., Videau, H., Candlin, D., Veitch, E., Parrini, G., Corden, M., Georgiopoulos, C., Ikeda, M., Lannutti, J., Levinthal, D., Mermikides, M., Sawyer, L., Antonelli, A., Baldini, R., Bencivenni, G., Bologna, G. a., Campana, P., Capon, G., Cerutti, F., Chiarella, V., D'Ettorre Piazzoli, B. a., Felici, G., Laurelli, P., Mannocchi, G. a., Murtas, F., Murtas, G., Nicoletti, G., Passalacqua, L., Pepe Altarelli, M., Picchi, P. a., Zografou, P., Altoon, B., Boyle, O., Halley, A., Have, I. T., Hearns, J., Lynch, J., Morton, W., Raine, C., Scarr, J., Smith, K., Thompson, A., Turnbull, R., Brandl, B., Braun, O., Geiges, R., Geweniger, C., Hanke, P., Hepp, V., Kluge, E., Maumary, Y., Putzer, A., Rensch, B., Stahl, A., Tittel, K., Wunsch, M., Belk, A., Beuselinck, R., Binnie, D., Cameron, W., Cattaneo, M., Dornan, P. a., Dugeay, S., Greene, A., Lieske, N., Patton, S., Payne, D., Phillips, M., Sedgbeer, J., Taylor, G., Tomalin, I., Wright, A., Girtler, P., Kuhn, D., Rudolph, G., Bowdery, C. a., Brodbeck, T., Finch, A., Foster, F., Hughes, G., Keemer, N., Nuttall, M., Patel, A., Rowlingson, B., Sloan, T., Snow, S., Whelan, E., Barczewski, T., Kleinknecht, K., Raab, J., Renk, B., Roehn, S., Sander, H., Schmelling, M., Schmidt, H., Steeg, F., Walther, S., Wolf, B., Albanese, J., Aubert, J., Benchouk, C., Bernard, V., Bonissent, A., Courvoisier, D., Etienne, F., Papalexiou, S., Payre, P., Pietrzyk, B., Qian, Z., Becker, H., Blum, W., Cattaneo, P., Cowan, G., Dehning, B., Dietl, H., Dydak, F. a., Fernandez Bosman, M., Hansl Kozanecka, T. a., Jahn, A., Kozanecki, W. a., Lange, E., Lauber, J., Lütjens, G., Lutz, G., Männer, W., Pan, Y., Richter, R., Schröder, J., Schwarz, A., Settles, R., Stierlin, U., Thomas, J., Wolf, G., Bertin, V., Boucrot, J., Callot, O. a., Chen, X., Cordier, A., Davier, M., Ganis, G., Grivaz, J., Heusse, P., Janot, P., Kim, D., Diberder, F. L., Lefrançois, J. a., Lutz, A., Veillet, J., Videau, I., Zhang, Z., Zomer, F., Abbaneo, D., Amendolia, S., Bagliesi, G., Batignani, G., Bosisio, L., Bottigli, Ubaldo, Bradaschia, C., Carpinelli, M., Ciocci, MARIA AGNESE, Dell'Orso, R., Ferrante, I., Fidecaro, F., Foà, L., Focardi, E., Forti, F., Giassi, A., Giorgi, M., Ligabue, F., Lusiani, A., Mannelli, E., Marrocchesi, PIER SIMONE, Messineo, A., Moneta, L., Palla, F., Sanguinetti, G., Steinberger, J., Tenchini, R., Tonelli, G., Triggiani, G., Vannini, C., Venturi, A., Verdini, P., Walsh, J., Carter, J., Green, M. a., March, P., Medcalf, T., Quazi, I., Saich, M., Strong, J., Thomas, R., West, L., Wildish, T., Botterill, D., Clifft, R., Edgecock, T., Edwards, M., Fisher, S., Jones, T., Norton, P., Salmon, D., Thompson, J., Bloch Devaux, B., Colas, P., Klopfenstein, C., Locci, E., Loucatos, S., Monnier, E., Perez, P., Perlas, J., Perrier, F., Rander, J., Renardy, J., Roussarie, A., Schuller, J., Schwindling, J., Vallage, B., Ashman, J., Booth, C., Buttar, C., Carney, R., Cartwright, S., Combley, F., Dinsdale, M., Dogru, M., Hatfield, F., Martin, J., Parker, D., Reeves, P., Thompson, L., Brandt, S., Burkhardt, H., Grupen, C., Meinhard, H., Mirabito, L., Neugebauer, E., Schäfer, U., Seywerd, H., Apollinari, G., Giannini, G., Gobbo, B., Liello, F., Ragusa, F. a., Rolandi, L., Stiegler, U., Bellantoni, L., Boudreau, J., Cinabro, D., Conway, J., Cowen, D. a., Feng, Z., Ferguson, D., Grahl, J., Harton, J., Jacobsen, J., Jared, R. a., Johnson, R., Leclaire, B., Pater, J., Saadi, Y., Sharma, V., Shi, Z., Tang, Y., Walsh, A., Wear, J., Weber, F., Whitney, M., Wu, S., Zobernig, G., D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., 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., Silvestri, 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., Lehrau, 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, Denis, R. S. t., 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 Fellou, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Lan Wu, Sau, and G., Zobernig

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Electroweak interaction, Virtual particle, Radiation, Charged particle, Nuclear physics, Pair production, High Energy Physics::Experiment, Particle Physics - Experiment, Communication channel, Lepton
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.

Published
1991

15. Measurement of the forward-backward asymmetry in and

Author

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, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, E.R. Nielsen, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, S. Orteu, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, F. Cerutti, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I. ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, K. Kleinknecht, J. Raab, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, S.M. Walther, B. Wolf, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, H. Becker, W. Blum, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, F. Dydak, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, J. Lauber, G. Lütjens, G. Lutz, W. Männer, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, J. Harvey, Ph. Heusse, P. Janot, D.W. Kim, F. Le Diberder, J. Lefrançois, A.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, D. Abbaneo, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, A. Giassi, M.A. Giorgi, F. Ligabue, A. Lusiani, E.B. Mannelli, P.S. Marrocchesi, A. Messineo, L. Moneta, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quazi, M.R. Saich, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fisher, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Locci, S. Loucatos, E. Monnier, P. Perez, J.A. Perlas, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.-P. Schuller, J. Schwindling, B. Vallage, J.G. Ashman, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, E. Neugebauer, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, F. Ragusa, L. Rolandi, U. Stiegler, L. Bellantoni, J.F. Boudreau, D. Cinabro, J.S. Conway, D.F. Cowen, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.L. Harton, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, Z.H. Shi, Y.H. Tang, A.M. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, null Sau Lan Wu, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., 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., Silvestri, 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., Lehrau, 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, Denis, R. S. t., 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 Fellou, P., Gay, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, J., Harvey, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, and G., Zobernig

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Aleph, Electron–positron annihilation, media_common.quotation_subject, Electroweak interaction, Hadron, Weinberg angle, Measure (mathematics), Asymmetry, Nuclear physics, Lepton, media_common
Abstract

From a sample of 150 000 hadronic Z decays collected with the ALEPH detector at LEP, events containing prompt leptons are used to measure the forward-backward asymmetries for the channels Z → b b and Z → c c , giving the results AFBb=0.126±0.028±0.012 and AFBc=0.064±0.039±0.030. These asymmetries correspond to the value of effective electroweak mixing angle at the Z mass sin2θW(mZ2) = 0.2262±0.0053.

Published
1991

16. Measurement of charge asymmetry in hadronic Z decays

Author

Décamp, D, Deschizeaux, B, Goy, C, Lees, J P, Minard, M N, Alemany, R, Crespo, J M, Delfino, M C, Fernández, E, Gaitan, V, Garrido, L, Mato, P, Mir, L M, Pacheco, A, Catanesi, M G, Creanza, D, De Palma, M, Farilla, A, Iaselli, Giuseppe, 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, W B, Bird, F, Blucher, E, Bonvicini, G, Bossi, F, Brown, D, Burnett, T H, Drevermann, H, Dydak, Friedrich, Forty, Roger W, Grab, C, Hagelberg, R, Haywood, S, Jost, B, Kasemann, M, Knobloch, J, Lacourt, A, Lançon, E, Lehraus, Ivan, Lohse, T, Marchioro, A, Martínez, M, May, J, Menary, S R, Minten, Adolf G, Miotto, A, Miquel, R, Moser, H G, Nash, J, Palazzi, P, Ranjard, F, Redlinger, G, Roth, A E, Rothberg, J E, Rotscheidt, Herbert, Saint-Denis, R, Schlatter, W D, Takashima, M, Talby, M, Tejessy, W, Wachsmuth, H W, Wasserbaech, S R, Wheeler, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Ziad J, Bardadin-Otwinowska, Maria, Falvard, A, El-Fellous, R, Gay, P, Harvey, J, Henrard, P, Jousset, J, Michel, B, Montret, J C, Pallin, D, Perret, P, Proriol, J, Prulhière, F, Stimpfl, G, Hansen, J D, Hansen, J R, Hansen, P H, Møllerud, R, Nielsen, E R, Nilsson, B S, Efthymiopoulos, I, Simopoulou, Errietta, Vayaki, Anna, Badier, J, Blondel, A, Bonneaud, G R, Bourotte, J, Braems, F, Brient, J C, Fouque, G, Gamess, A, Guirlet, R, Lemoine, C, Matricon, P, Maubras, M, Morano, R, Miné, P, Parey, J Y, Poilleux, P, Orteu, S, Rosowsky, A, Rougé, A, Rumpf, M, Tanaka, R, Videau, H L, Candlin, D J, Veitch, E, Parrini, G, Corden, M, Georgiopoulos, C H, Ikeda, M, Lannutti, J E, Levinthal, D A, Mermikides, Michael E, Sawyer, L, Antonelli, A, Baldini, R, Bencivenni, G, Bologna, G, Campana, P, Capon, G, Chiarella, V, D'Ettorre-Piazzoli, B, Felici, G, Laurelli, P, Mannocchi, G, Massimo-Brancaccio, F, Murtas, F, Murtas, G P, Nicoletti, G, Passalacqua, L, Pepé-Altarelli, M, Picchi, P, Zografou, P, Altoon, B, Boyle, O, Halley, A W, ten Have, I, Hearns, J A, Lynch, J G, Morton, W T, Raine, C, Scarr, J M, Smith, K, Thompson, A S, Turnbull, R M, Brandl, B, Braun, O, Geiges, R, Geweniger, C, Hanke, P, Hepp, V, Kluge, E E, Maumary, Y, Putzer, A, Rensch, B, Stahl, A, Tittel, K, Wunsch, M, Belk, A T, Beuselinck, R, Binnie, David M, Cameron, W, Cattaneo, M, Dornan, Peter J, Dugeay, S, Greene, A M, Hassard, J F, Lieske, N M, Patton, S J, Payne, D G, Phillips, D G, Sedgbeer, J K, Taylor, G, Tomalin, I R, Wright, A G, Girtler, P, Kuhn, D, Rudolph, G, Bowdery, C K, Brodbeck, T J, Finch, A J, Foster, F, Hughes, G, Keemer, N R, Nuttall, M, Patel, A D, Rowlingson, B S, Sloan, Terence, Snow, S W, Whelan, E P, Barczewski, T, Bauerdick, L A T, Kleinknecht, K, Renk, B, Roehn, S, Sander, H G, Schmelling, M, Schmidt, H, Steeg, F, Albanese, J P, Aubert, Jean-Jacques, Benchouk, C, Bernard, V, Bonissent, A, Courvoisier, D, Etienne, F, Papalexiou, S, Payre, P, Pietrzyk, B, Qian, Z, Becker, H, Blum, Walter, Cattaneo, Paolo Walter, Cowan, G D, Dehning, Bernd, Dietl, H, Fernández-Bosman, M, Hansl-Kozanecka, Traudl, Jahn, A, Kozanecki, Witold, Lange, E, Lütjens, G, Lutz, Gerhard, Männer, W, Richter, R H, Schröder, J, Schwarz, A, Settles, Ronald, Stierlin, U, Thomas, J, Wolf, G, Bertin, V, De Bouard, G, Boucrot, J, Callot, O, Chen, X, Cordier, A, Davier, M, Ganis, G, Grivaz, J F, Heusse, P, Janot, P, Journé, V, Kim, D W, Lefrançois, J, Lutz, A M, Veillet, J J, Videau, I, Zhang, Z, Zomer, F, Amendolia, S R, Bagliesi, G, Batignani, G, Bosisio, L, Bottigli, U, Bradaschia, C, Carpinelli, M, Ciocci, M A, Dell'Orso, R, Ferrante, I, Fidecaro, F, Foà, L, Focardi, E, Forti, F, Giassi, A, Giorgi, M A, Ligabue, F, Lusiani, A, Mannelli, E B, Marrocchesi, P S, Messineo, A, Moneta, L, Palla, Fabrizio, Sanguinetti, G, Steinberger, Jack, Tenchini, Roberto, Tonelli, G, Triggiani, G, Vannini-Castaldi, C, Venturi, A, Verdini, P G, Walsh, J, Carter, J M, Green, M G, March, P V, Medcalf, T, Quazi, I S, Saich, M R, Strong, J A, Thomas, R M, West, L R, Wildish, T, Botterill, David R, Clifft, R W, Edgecock, T R, Edwards, M, Fisher, S M, Jones, T J, Norton, P R, Salmon, D P, Thompson, J C, Bloch-Devaux, B, Colas, P, Klopfenstein, C, Locci, E, Loucatos, Sotirios S, Monnier, E, Pérez, P, Perlas, J A, Perrier, F, Rander, J, Renardy, J F, Roussarie, A, Schuller, J P, Schwindling, J, Vallage, B, Ashman, John Gavin, Booth, C N, Buttar, C M, Carney, R E, Cartwright, S L, Combley, F, Dinsdale, M, Dogru, M, Hatfield, F, Martín, J, Parker, D, Reeves, P, Thompson, L F, Brandt, S, Burkhardt, H, Grupen, Claus, Meinhard, H, Mirabito, L, Neugebauer, E, Schäfer, U, Seywerd, H C J, Apollinari, G, Giannini, G, Gobbo, B, Liello, F, Rolandi, Luigi, Stiegler, U, Bellantoni, L, Boudreau, J F, Cinabro, D, Conway, J S, Cowen, D F, De Weerd, A J, Feng, Z, Ferguson, D P S, Gao, Y S, Grahl, J, Harton, J L, Jacobsen, J E, Jared, R C, Johnson, R P, LeClaire, B W, Pater, J R, Saadi, Y, Sharma, V, Walsh, M A, Wear, J A, Weber, F V, Whitney, M H, Wu Sau Lan, Zho, Z L, Zobernig, G, D., Decamp, B., Deschizeaux, C., Goy, J. P., Le, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., P., Mato, Mir, L. l. M., 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., Silvestri, 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, F., Bird, E., Blucher, G., Bonvicini, F., Bossi, D., Brown, T. H., Burnett, H., Drevermann, F., Dydak, R. W., Forty, C., Grab, R., Hagelberg, A., Haywood, J., Hilgart, B., Jost, M., Kasemann, J., Knobloch, A., Lacourt, E., Lançon, I., Lehrau, T., Lohse, A., Marchioro, M., Martinez, J., May, 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, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Falvard, R., El Fellou, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhiére, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, E. R., Nielsen, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Massimo Brancaccio, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, L. A. T., Bauerdick, K., Kleinknecht, B., Renk, S., Roehn, A. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberber, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, A., Giassi, M. A., Giorgi, F., Ligabue, A., Lusiani, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, L., Moneta, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Viannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, M. R., Saich, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, E., Neugebauer, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, L., Rolandi, U., Stiegler, L., Bellantoni, J. F., Boudreau, D., Cinabro, J. S., Conway, D. F., Cowen, A. J., Deweerd, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Lan Wu, Sau, Z. L., Zhou, and G., Zobernig

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, media_common.quotation_subject, Electron–positron annihilation, Electroweak interaction, Hadron, Weinberg angle, Charge (physics), Asymmetry, Standard Model, Nuclear physics, Momentum, High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment, media_common
Abstract

A significant charge asymmetry is observed in the hadronic Z decays with the ALEPH detector at LEP. The asymmetry expressed in terms of the difference in momentum weighted charges in the two event hemispheres is measured to be − = −0.0084±0.0015 (stat.) ±0.0004 (exp. sys.). In the framework of the standard model this can be interpreted as a measurement of the effective electroweak mixing angle, sin2Ow (Mz2=0.2300±0.0034 (stat.) ±0.0010 (exp. sys.) ±0.0038 (theor. sys.) or of the ratio of the vector to axual- vector coupling costants of the electron, gvegAe=+0.073±0.024.

Published
1991

17. Production and decay of charmed mesons at the Z resonance

Author

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, J. Boudreau, 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. Lusiani, 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, M. Saich, R. St.Denis, D. Schlatter, M. Takashima, M. Talby, W. Tejessy, H. Wachsmuth, S. Wasserbaech, S. Wheeler, W. Wiedenmann, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, R. El Fellous, A. Falvard, P. Gay, J. Harvey, P. Henrard, J. Jousset, B. Michel, J.-C. Montret, D. Pallin, P. Perret, J. Proriol, F. Prulhière, G. Stimpfl, J.D. Hansen, J.R. Hansen, P.H. Hansen, R. Møllerud, B.S. Nilsson, I. Efthymiopoulos, E. Simopoulou, A. Vayaki, J. Badier, A. Blondel, G. Bonneaud, J. Bourotte, F. Braems, J.C. Brient, G. Fouque, A. Gamess, R. Guirlet, S. Orteu, A. Rosowsky, A. Rougé, M. Rumpf, R. Tanaka, H. Videau, D.J. Candlin, E. Veitch, L. Moneta, G. Parrini, M. Corden, C. Georgiopoulos, M. Ikeda, J. Lannutti, D. Levinthal, M. Mermikides, L. Sawyer, A. Antonelli, R. Baldini, G. Bencivenni, G. Bologna, P. Campana, G. Capon, F. Cerutti, V. Chiarella, B. D'Ettorre-Piazzoli, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, G. Nicoletti, L. Passalacqua, M. Pepe-Altarelli, P. Picchi, P. Zografou, B. Altoon, O. Boyle, A.W. Halley, I. ten Have, J.L. Hearns, J.G. Lynch, W.T. Morton, C. Raine, J.M. Scarr, K. Smith, A.S. Thompson, R.M. Turnbull, B. Brandl, O. Braun, R. Geiges, C. Geweniger, P. Hanke, V. Hepp, E.E. Kluge, Y. Maumary, A. Putzer, B. Rensch, A. Stahl, K. Tittel, M. Wunsch, A.T. Belk, R. Beuselinck, D.M. Binnie, W. Cameron, M. Cattaneo, P.J. Dornan, S. Dugeay, A.M. Greene, J.F. Hassard, N.M. Lieske, S.J. Patton, D.G. Payne, M.J. Phillips, J.K. Sedgbeer, G. Taylor, I.R. Tomalin, A.G. Wright, P. Girtler, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, A.J. Finch, F. Foster, G. Hughes, N.R. Keemer, M. Nuttall, A. Patel, B.S. Rowlingson, T. Sloan, S.W. Snow, E.P. Whelan, T. Barczewski, K. Kleinknecht, J. Raab, B. Renk, S. Roehn, H.-G. Sander, M. Schmelling, H. Schmidt, F. Steeg, S.M. Walther, B. Wolf, J.-P. Albanese, J.-J. Aubert, C. Benchouk, V. Bernard, A. Bonissent, D. Courvoisier, F. Etienne, S. Papalexiou, P. Payre, B. Pietrzyk, Z. Qian, H. Becker, W. Blum, P. Cattaneo, G. Cowan, B. Dehning, H. Dietl, F. Dydak, M. Fernandez-Bosman, T. Hansl-Kozanecka, A. Jahn, W. Kozanecki, E. Lange, J. Lauber, G. Lütjens, G. Lutz, W. Männer, Y. Pan, R. Richter, J. Schröder, A.S. Schwarz, R. Settles, U. Stierlin, J. Thomas, G. Wolf, V. Bertin, J. Boucrot, O. Callot, X. Chen, A. Cordier, M. Davier, G. Ganis, J.-F. Grivaz, Ph. Heusse, P. Janot, D.W. Kim, F. Le Diberder, J. Lefrançois, A.-M. Lutz, J.-J. Veillet, I. Videau, Z. Zhang, F. Zomer, D. Abbaneo, S.R. Amendolia, G. Bagliesi, G. Batignani, L. Bosisio, U. Bottigli, C. Bradaschia, M. Carpinelli, M.A. Ciocci, R. Dell'Orso, I. Ferrante, F. Fidecaro, L. Foà, E. Focardi, F. Forti, C. Gatto, A. Giassi, M.A. Giorgi, F. Ligabue, E.B. Mannelli, P.S. Marrocchesi, A. Messineo, F. Palla, G. Sanguinetti, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, A. Venturi, P.G. Verdini, J. Walsh, J.M. Carter, M.G. Green, P.V. March, T. Medcalf, I.S. Quazi, J.A. Strong, R.M. Thomas, L.R. West, T. Wildish, D.R. Botterill, R.W. Clifft, T.R. Edgecock, M. Edwards, S.M. Fisher, T.J. Jones, P.R. Norton, D.P. Salmon, J.C. Thompson, B. Bloch-Devaux, P. Colas, C. Klopfenstein, E. Locci, S. Loucatos, E. Monnier, P. Perez, J.A. Perlas, F. Perrier, J. Rander, J.-F. Renardy, A. Roussarie, J.-P. Schuller, J. Schwindling, B. Vallage, J.G. Ashman, C.N. Booth, C. Buttar, R. Carney, S. Cartwright, F. Combley, M. Dinsdale, M. Dogru, F. Hatfield, J. Martin, D. Parker, P. Reeves, L.F. Thompson, E. Barberio, S. Brandt, H. Burkhardt, C. Grupen, H. Meinhard, L. Mirabito, U. Schäfer, H. Seywerd, G. Apollinari, G. Giannini, B. Gobbo, F. Liello, F. Ragusa, L. Rolandi, U. Stiegler, L. Bellantoni, D. Cinabro, J.S. Conway, D.F. Cowen, Z. Feng, D.P.S. Ferguson, Y.S. Gao, J. Grahl, J.L. Harton, J.E. Jacobsen, R.C. Jared, R.P. Johnson, B.W. LeClaire, Y.B. Pan, J.R. Pater, Y. Saadi, V. Sharma, Z.H. Shi, Y.H. Tang, A.M. Walsh, J.A. Wear, F.V. Weber, M.H. Whitney, null Sau Lan Wu, G. Zobernig, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., 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., Silvestri, 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, J., Boudreau, 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., Lehrau, T., Lohse, A., Lusiani, 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, M., Saich, Denis, R. S. t., D., Schlatter, M., Takashima, M., Talby, W., Tejessy, H., Wachsmuth, S., Wasserbaech, S., Wheeler, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, R., El Fellou, A., Falvard, P., Gay, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhière, G., Stimpfl, J. D., Hansen, J. R., Hansen, P. H., Hansen, R., Møllerud, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Rougé, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, L., Moneta, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., ten Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, M., Schmelling, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., Lütjen, G., Lutz, W., Männer, Y., Pan, R., Richter, J., Schröder, A. S., Schwarz, R., Settle, U., Stierlin, J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Foà, E., Focardi, F., Forti, C., Gatto, A., Giassi, M. A., Giorgi, F., Ligabue, E. B., Mannelli, P. S., Marrocchesi, A., Messineo, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, E., Barberio, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, U., Schäfer, H., Seywerd, G., Apollinari, G., Giannini, B., Gobbo, F., Liello, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, and G., Zobernig

Subjects
Nuclear physics, Physics, Hadronic decay, Nuclear and High Energy Physics, Particle physics, Meson, Branching fraction, Electron–positron annihilation, Hadron, Beam energy, Particle Physics - Experiment, Hadronization
Abstract

In a sample of 190 000 hadronic Z decays, three signals of charm production are observed: two from the exclusive decays D ° → K − π + and D ∗+ → D °π + → K − π + π + and one in the transverse-momentum distribution of soft hadrons relative to the nearest jet. The features of these signals are in good agreement with expectations based on the standard model and previous measurements of the branching fractions. The number of D ∗± → K ± π ± π ± per hadronic decay of the Z is measured to be (5.11±0.34) × 10 −3 , and the branching ratio B(D 0 → K − π + ) is (3.62 ± 0.34 ± 0.44)%. Charm hadronization has been studied. The average fraction of the beam energy carried by the D ∗ meson is found to be 〈 X E 〉 c = 0.504 −0.017 +0.013 ±0.008, and implications of the measurements on the pseudoscalar-to-vector production ratio of charmed mesons are discussed.

Published
1991

18. AN INVESTIGATION INTO INTERMITTENCY

Author

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, DEPALMA 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, BOUDREAU J, BROWN D, BURNETT TH, DREVERMANN H, FORTY RW, GRAB C, HAGELBERG R, HAYWOOD S, HILGART J, JOST B, KASEMANN M, KNOBLOCH J, LACOURT A, LANCON 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, SAICH M, SCHLATTER D, SCHMELLING M, TAKASHIMA M, TEJESSY W, WACHSMUTH H, WASSERBAECH S, WIEDENMANN W, WITZELING W, WOTSCHACK J, AJALTOUNI Z, BADAUD F, BARDADINOTWINOWSKA M, BENCHEIKH AM, ELFELLOUS R, FALVARD A, GAY P, GUICHENEY C, HARVEY J, HENRARD P, JOUSSET J, MICHEL B, MONTRET JC, PALLIN D, PERRET P, PRORIOL J, PRULHIERE F, STIMPFL G, HANSEN JD, HANSEN PH, MOLLERUD R, NILSSON BS, EFTHYMIOPOULOS I, SIMOPOULOU E, VAYAKI A, BADIER J, BLONDEL A, BONNEAUD G, BOUROTTE J, BRAEMS F, BRIENT JC, FOUQUE G, GAMESS A, GUIRLET R, ORTEU S, ROSOWSKY A, ROUGE A, RUMPF M, TANAKA R, VIDEAU H, CANDLIN DJ, VEITCH E, MONETA L, PARRINI G, CORDEN M, GEORGIOPOULOS C, IKEDA M, LANNUTTI J, LEVINTHAL D, MERMIKIDES M, SAWYER L, ANTONELLI A, BALDINI R, BENCIVENNI G, BOLOGNA G, CAMPANA P, CAPON G, CERUTTI F, CHIARELLA V, DETTORREPIAZZOLI B, FELICI G, LAURELLI P, MANNOCCHI G, MURTAS F, MURTAS GP, NICOLETTI G, PASSALACQUA L, PEPEALTARELLI M, PICCHI P, ZOGRAFOU P, ALTOON B, BOYLE O, HALLEY AW, TENHAVE I, HEARNS JL, LYNCH JG, MORTON WT, RAINE C, SCARR JM, SMITH K, THOMPSON AS, TURNBULL RM, BRANDL B, BRAUN O, GEIGES R, GEWENIGER C, HANKE P, HEPP V, KLUGE EE, MAUMARY Y, PUTZER A, RENSCH B, STAHL A, TITTEL K, WUNSCH M, BELK AT, BEUSELINCK R, BINNIE DM, CAMERON W, CATTANEO M, DORNAN PJ, DUGEAY S, GREENE AM, HASSARD JF, LIESKE NM, PATTON SJ, PAYNE DG, PHILLIPS MJ, SEDGBEER JK, TAYLOR G, TOMALIN IR, WRIGHT AG, GIRTLER P, KUHN D, RUDOLPH G, BOWDERY CK, BRODBECK TJ, FINCH AJ, FOSTER F, HUGHES G, KEEMER NR, NUTTALL M, PATEL A, ROWLINGSON BS, SLOAN T, SNOW SW, WHELAN EP, BARCZEWSKI T, KLEINKNECHT K, RAAB J, RENK B, ROEHN S, SANDER HG, SCHMIDT H, STEEG F, WALTHER SM, WOLF B, ALBANESE JP, AUBERT JJ, BENCHOUK C, BERNARD V, BONISSENT A, COURVOISIER D, ETIENNE F, PAPALEXIOU S, PAYRE P, PIETRZYK B, QIAN Z, TALBY M, BECKER H, BLUM W, CATTANEO P, COWAN G, DEHNING B, DIETL H, DYDAK F, FERNANDEZBOSMAN M, HANSLKOZANECKA T, JAHN A, KOZANECKI W, LANGE E, LAUBER J, LUTJENS G, LUTZ G, MANNER W, PAN Y, RICHTER R, SCHRODER J, SCHWARZ AS, SETTLES R, STIERLIN U, DENIS RS, THOMAS J, WOLF G, BERTIN V, BOUCROT J, CALLOT O, CHEN X, CORDIER A, DAVIER M, GANIS G, GRIVAZ JF, HEUSSE P, JANOT P, KIM DW, LEDIBERDER F, LEFRANCOIS J, LUTZ AM, VEILLET JJ, VIDEAU I, ZHANG Z, ZOMER F, ABBANEO D, AMENDOLIA SR, BAGLIESI G, BATIGNANI G, BOSISIO L, BOTTIGLI U, BRADASCHIA C, CARPINELLI M, CIOCCI MA, DELLORSO R, FERRANTE I, FIDECARO F, FOA L, FOCARDI E, FORTI F, GATTO C, GIASSI A, GIORGI MA, MANNELLI EB, MARROCHESI PS, MESSINEO A, PALLA F, SANGUINETTI G, STEINBERGER J, TENCHINI R, TONELLI G, TRIGGIANI G, VANNINI C, VENTURI A, VERDINI PG, WALSH J, CARTER JM, GREEN MG, MARCH PV, MEDCALF T, QUAZI IS, STRONG JA, THOMAS RM, WEST LR, WILDISH T, BOTTERILL DR, CLIFFT RW, EDGECOCK TR, EDWARDS M, FISHER SM, JONES TJ, NORTON PR, SALMON DP, THOMPSON JC, BLOCHDEVAUX B, COLAS P, KLOPFENSTEIN C, LOCCI E, LOUCATOS S, MONNIER E, PEREZ P, PERLAS JA, PERRIER F, RANDER J, RENARDY JF, ROUSSARIE A, SCHULLER JP, SCHWINDLING J, VALLAGE B, ASHMAN JG, BOOTH CN, BUTTAR C, CARNEY R, CARTWRIGHT S, COMBLEY F, DINSDALE M, DOGRU M, HATFIELD F, MARTIN J, PARKER D, REEVES P, THOMPSON LF, BARBERIO E, BRANDT S, BURKHARDT H, GRUPEN C, MEINHARD H, MIRABITO L, SCHAFER U, SEYWERD H, GIANNINI G, GOBBO B, RAGUSA F, ROLANDI L, STIEGLER U, BELLANTONI L, CINABRO D, CONWAY JS, COWEN DF, FENG Z, FERGUSON DPS, GAO YS, GRAHL J, HARTON JL, JACOBSEN JE, JARED RC, JOHNSON RP, LECLAIRE BW, PAN YB, PATER JR, SAADI Y, SHARMA V, SHI ZH, TANG YH, WALSH AM, WEAR JA, WEBER FV, WHITNEY MH, WU SL, ZOBERNIG G., LUSIANI, Alberto, LIGABUE, FRANCO, 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, Depalma, 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, Boudreau, J, Brown, D, Burnett, Th, Drevermann, H, Forty, Rw, Grab, C, Hagelberg, R, Haywood, S, Hilgart, J, Jost, B, Kasemann, M, Knobloch, J, Lacourt, A, Lancon, E, Lehraus, I, Lohse, T, Lusiani, Alberto, 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, Saich, M, Schlatter, D, Schmelling, M, Takashima, M, Tejessy, W, Wachsmuth, H, Wasserbaech, S, Wiedenmann, W, Witzeling, W, Wotschack, J, Ajaltouni, Z, Badaud, F, Bardadinotwinowska, M, Bencheikh, Am, Elfellous, R, Falvard, A, Gay, P, Guicheney, C, Harvey, J, Henrard, P, Jousset, J, Michel, B, Montret, Jc, Pallin, D, Perret, P, Proriol, J, Prulhiere, F, Stimpfl, G, Hansen, Jd, Hansen, Ph, Mollerud, R, Nilsson, B, Efthymiopoulos, I, Simopoulou, E, Vayaki, A, Badier, J, Blondel, A, Bonneaud, G, Bourotte, J, Braems, F, Brient, Jc, Fouque, G, Gamess, A, Guirlet, R, Orteu, S, Rosowsky, A, Rouge, A, Rumpf, M, Tanaka, R, Videau, H, Candlin, Dj, Veitch, E, Moneta, L, Parrini, G, Corden, M, Georgiopoulos, C, Ikeda, M, Lannutti, J, Levinthal, D, Mermikides, M, Sawyer, L, Antonelli, A, Baldini, R, Bencivenni, G, Bologna, G, Campana, P, Capon, G, Cerutti, F, Chiarella, V, Dettorrepiazzoli, B, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, Gp, Nicoletti, G, Passalacqua, L, Pepealtarelli, M, Picchi, P, Zografou, P, Altoon, B, Boyle, O, Halley, Aw, Tenhave, I, Hearns, Jl, Lynch, Jg, Morton, Wt, Raine, C, Scarr, Jm, Smith, K, Thompson, A, Turnbull, Rm, Brandl, B, Braun, O, Geiges, R, Geweniger, C, Hanke, P, Hepp, V, Kluge, Ee, Maumary, Y, Putzer, A, Rensch, B, Stahl, A, Tittel, K, Wunsch, M, Belk, At, Beuselinck, R, Binnie, Dm, Cameron, W, Cattaneo, M, Dornan, Pj, Dugeay, S, Greene, Am, Hassard, Jf, Lieske, Nm, Patton, Sj, Payne, Dg, Phillips, Mj, Sedgbeer, Jk, Taylor, G, Tomalin, Ir, Wright, Ag, Girtler, P, Kuhn, D, Rudolph, G, Bowdery, Ck, Brodbeck, Tj, Finch, Aj, Foster, F, Hughes, G, Keemer, Nr, Nuttall, M, Patel, A, Rowlingson, B, Sloan, T, Snow, Sw, Whelan, Ep, Barczewski, T, Kleinknecht, K, Raab, J, Renk, B, Roehn, S, Sander, Hg, Schmidt, H, Steeg, F, Walther, Sm, Wolf, B, Albanese, Jp, Aubert, Jj, Benchouk, C, Bernard, V, Bonissent, A, Courvoisier, D, Etienne, F, Papalexiou, S, Payre, P, Pietrzyk, B, Qian, Z, Talby, M, Becker, H, Blum, W, Cattaneo, P, Cowan, G, Dehning, B, Dietl, H, Dydak, F, Fernandezbosman, M, Hanslkozanecka, T, Jahn, A, Kozanecki, W, Lange, E, Lauber, J, Lutjens, G, Lutz, G, Manner, W, Pan, Y, Richter, R, Schroder, J, Schwarz, A, Settles, R, Stierlin, U, Denis, R, Thomas, J, Wolf, G, Bertin, V, Boucrot, J, Callot, O, Chen, X, Cordier, A, Davier, M, Ganis, G, Grivaz, Jf, Heusse, P, Janot, P, Kim, Dw, Lediberder, F, Lefrancois, J, Lutz, Am, Veillet, Jj, Videau, I, Zhang, Z, Zomer, F, Abbaneo, D, Amendolia, Sr, Bagliesi, G, Batignani, G, Bosisio, L, Bottigli, U, Bradaschia, C, Carpinelli, M, Ciocci, Ma, Dellorso, R, Ferrante, I, Fidecaro, F, Foa, L, Focardi, E, Forti, F, Gatto, C, Giassi, A, Giorgi, Ma, Ligabue, Franco, Mannelli, Eb, Marrochesi, P, Messineo, A, Palla, F, Sanguinetti, G, Steinberger, J, Tenchini, R, Tonelli, G, Triggiani, G, Vannini, C, Venturi, A, Verdini, Pg, Walsh, J, Carter, Jm, Green, Mg, March, Pv, Medcalf, T, Quazi, I, Strong, Ja, Thomas, Rm, West, Lr, Wildish, T, Botterill, Dr, Clifft, Rw, Edgecock, Tr, Edwards, M, Fisher, Sm, Jones, Tj, Norton, Pr, Salmon, Dp, Thompson, Jc, Blochdevaux, B, Colas, P, Klopfenstein, C, Locci, E, Loucatos, S, Monnier, E, Perez, P, Perlas, Ja, Perrier, F, Rander, J, Renardy, Jf, Roussarie, A, Schuller, Jp, Schwindling, J, Vallage, B, Ashman, Jg, Booth, Cn, Buttar, C, Carney, R, Cartwright, S, Combley, F, Dinsdale, M, Dogru, M, Hatfield, F, Martin, J, Parker, D, Reeves, P, Thompson, Lf, Barberio, E, Brandt, S, Burkhardt, H, Grupen, C, Meinhard, H, Mirabito, L, Schafer, U, Seywerd, H, Giannini, G, Gobbo, B, Ragusa, F, Rolandi, L, Stiegler, U, Bellantoni, L, Cinabro, D, Conway, J, Cowen, Df, Feng, Z, Ferguson, Dp, Grahl, J, Harton, Jl, Jacobsen, Je, Jared, Rc, Johnson, Rp, Leclaire, Bw, Pan, Yb, Pater, Jr, Saadi, Y, Sharma, V, Shi, Zh, Tang, Yh, Walsh, Am, Wear, Ja, Weber, Fv, Whitney, Mh, Wu, Sl, Zobernig, G., Lees, J, Minard, M, Crespo, J, Mir, L, Catanesi, M, Atwood, W, Bauerdick, L, Burnett, T, Forty, R, Lusiani, A, Moser, H, Bencheikh, A, Montret, J, Hansen, J, Hansen, P, Brient, J, Candlin, D, Murtas, G, Halley, A, Hearns, J, Lynch, J, Morton, W, Scarr, J, Turnbull, R, Kluge, E, Belk, A, Binnie, D, Dornan, P, Greene, A, Hassard, J, Lieske, N, Patton, S, Payne, D, Phillips, M, Sedgbeer, J, Tomalin, I, Wright, A, Bowdery, C, Brodbeck, T, Finch, A, Keemer, N, Snow, S, Whelan, E, Sander, H, Walther, S, Albanese, J, Aubert, J, Grivaz, J, Kim, D, Lutz, A, Veillet, J, Amendolia, S, Ciocci, M, Giorgi, M, Ligabue, F, Mannelli, E, Verdini, P, Carter, J, Green, M, March, P, Strong, J, Thomas, R, West, L, Botterill, D, Clifft, R, Edgecock, T, Fisher, S, Jones, T, Norton, P, Salmon, D, Thompson, J, Perlas, J, Renardy, J, Schuller, J, Ashman, J, Booth, C, Thompson, L, Cowen, D, Ferguson, D, Harton, J, Jacobsen, J, Jared, R, Johnson, R, Leclaire, B, Pater, J, Shi, Z, Tang, Y, Walsh, A, Wear, J, Weber, F, Whitney, M, Wu, S, Zobernig, G, D., Decamp, B., Deschizeaux, C., Goy, J. P., Lee, M. N., Minard, R., Alemany, J. M., Crespo, M., Delfino, E., Fernandez, V., Gaitan, Garrido, L. l., Mir, L. l. M., A., Pacheco, M. G., Catanesi, D., Creanza, M., 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., Silvestri, 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, J., Boudreau, 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., Lan�on, I., Lehrau, T., Lohse, A., Lusiani, 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, M., Saich, D., Schlatter, M., Schmelling, M., Takashima, W., Tejessy, H., Wachsmuth, S., Wasserbaech, W., Wiedenmann, W., Witzeling, J., Wotschack, Z., Ajaltouni, F., Badaud, M., Bardadin Otwinowska, A. M., Bencheikh, R., Fellou, A., Falvard, P., Gay, C., Guicheney, J., Harvey, P., Henrard, J., Jousset, B., Michel, J. C., Montret, D., Pallin, P., Perret, J., Proriol, F., Prulhi�re, G., Stimpfl, J. D., Hansen, P. H., Hansen, R., M�llerud, B. S., Nilsson, I., Efthymiopoulo, E., Simopoulou, A., Vayaki, J., Badier, A., Blondel, G., Bonneaud, J., Bourotte, F., Braem, J. C., Brient, G., Fouque, A., Game, R., Guirlet, S., Orteu, A., Rosowsky, A., Roug�, M., Rumpf, R., Tanaka, H., Videau, D. J., Candlin, E., Veitch, L., Moneta, G., Parrini, M., Corden, C., Georgiopoulo, M., Ikeda, J., Lannutti, D., Levinthal, M., Mermikide, L., Sawyer, A., Antonelli, R., Baldini, G., Bencivenni, G., Bologna, P., Campana, G., Capon, F., Cerutti, V., Chiarella, D'ETTORRE PIAZZOLI, Benedetto, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, G., Nicoletti, L., Passalacqua, M., Pepe Altarelli, P., Picchi, P., Zografou, B., Altoon, O., Boyle, A. W., Halley, I., Have, J. L., Hearn, J. G., Lynch, W. T., Morton, C., Raine, J. M., Scarr, K., Smith, A. S., Thompson, R. M., Turnbull, B., Brandl, O., Braun, R., Geige, C., Geweniger, P., Hanke, V., Hepp, E. E., Kluge, Y., Maumary, A., Putzer, B., Rensch, A., Stahl, K., Tittel, M., Wunsch, A. T., Belk, R., Beuselinck, D. M., Binnie, W., Cameron, M., Cattaneo, P. J., Dornan, S., Dugeay, A. M., Greene, J. F., Hassard, N. M., Lieske, S. J., Patton, D. G., Payne, M. J., Phillip, J. K., Sedgbeer, G., Taylor, I. R., Tomalin, A. G., Wright, P., Girtler, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, A. J., Finch, F., Foster, G., Hughe, N. R., Keemer, M., Nuttall, A., Patel, B. S., Rowlingson, T., Sloan, S. W., Snow, E. P., Whelan, T., Barczewski, K., Kleinknecht, J., Raab, B., Renk, S., Roehn, H. G., Sander, H., Schmidt, F., Steeg, S. M., Walther, B., Wolf, J. P., Albanese, J. J., Aubert, C., Benchouk, V., Bernard, A., Bonissent, D., Courvoisier, F., Etienne, S., Papalexiou, P., Payre, B., Pietrzyk, Z., Qian, M., Talby, H., Becker, W., Blum, P., Cattaneo, G., Cowan, B., Dehning, H., Dietl, F., Dydak, M., Fernandez Bosman, T., Hansl Kozanecka, A., Jahn, W., Kozanecki, E., Lange, J., Lauber, G., L�tjen, G., Lutz, W., M�nner, Y., Pan, R., Richter, J., Schr�der, A. S., Schwarz, R., Settle, U., Stierlin, Denis, R. S. t., J., Thoma, G., Wolf, V., Bertin, J., Boucrot, O., Callot, X., Chen, A., Cordier, M., Davier, G., Gani, J. F., Grivaz, Heusse, P. h., P., Janot, D. W., Kim, F., Diberder, J., Lefran�oi, A. M., Lutz, J. J., Veillet, I., Videau, Z., Zhang, F., Zomer, D., Abbaneo, S. R., Amendolia, G., Bagliesi, G., Batignani, L., Bosisio, U., Bottigli, C., Bradaschia, M., Carpinelli, M. A., Ciocci, R., Dell'Orso, I., Ferrante, F., Fidecaro, L., Fo�, E., Focardi, F., Forti, C., Gatto, A., Giassi, M. A., Giorgi, F., Ligabue, E. B., Mannelli, P. S., Marrochesi, A., Messineo, F., Palla, G., Sanguinetti, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, A., Venturi, P. G., Verdini, J., Walsh, J. M., Carter, M. G., Green, P. V., March, T., Medcalf, I. S., Quazi, J. A., Strong, R. M., Thoma, L. R., West, T., Wildish, D. R., Botterill, R. W., Clifft, T. R., Edgecock, M., Edward, S. M., Fisher, T. J., Jone, P. R., Norton, D. P., Salmon, J. C., Thompson, B., Bloch Devaux, P., Cola, C., Klopfenstein, E., Locci, S., Loucato, E., Monnier, P., Perez, J. A., Perla, F., Perrier, J., Rander, J. F., Renardy, A., Roussarie, J. P., Schuller, J., Schwindling, B., Vallage, J. G., Ashman, C. N., Booth, C., Buttar, R., Carney, S., Cartwright, F., Combley, M., Dinsdale, M., Dogru, F., Hatfield, J., Martin, D., Parker, P., Reeve, L. F., Thompson, E., Barberio, S., Brandt, H., Burkhardt, C., Grupen, H., Meinhard, L., Mirabito, U., Sch�fer, H., Seywerd, G., Giannini, B., Gobbo, F., Ragusa, L., Rolandi, U., Stiegler, L., Bellantoni, D., Cinabro, J. S., Conway, D. F., Cowen, Z., Feng, D. P. S., Ferguson, Y. S., Gao, J., Grahl, J. L., Harton, J. E., Jacobsen, R. C., Jared, R. P., Johnson, B. W., Leclaire, Y. B., Pan, J. R., Pater, Y., Saadi, V., Sharma, Z. H., Shi, Y. H., Tang, A. M., Walsh, J. A., Wear, F. V., Weber, M. H., Whitney, Sau Lan, Wu, and G., Zobernig

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), RANGE, Hadron, Parton, Elementary particle, DECAYS, Gluon, Moment (physics), Transverse mass, Rapidity, High Energy Physics::Experiment, Parton shower, ANNIHILATION, Nuclear Experiment, Engineering (miscellaneous), Particle Physics - Experiment
Abstract

The results of an investigation based on ALEPH data, e+ e- --> hadrons at square-root s = 91 GeV, into fluctuations in rapidity space are presented. It is found that the behaviour of the factorial moments is well represented by the Lund parton shower model. An estimate is made of the scale of fluctuations needed to describe the data. Differential moments are introduced and are used to demonstrate that within the average represented by the traditional factorial moments the pattern of fluctu10.1007/BF01483869ations is itself a strong function of rapidity. This pattern is shown to be primarily associated with the emission of hard gluons. The implied structure between the hadron clusters and partons is explored by the use of transverse mass moments. It is concluded that the principal features of the one-dimensional factorial moments, differential moments and transverse mass moments have their origin in the O(alpha(s)) matrix element, kinematic boundaries and the method of selection of the event axis.

19. Impact of surgical mask on performance and cardiorespiratory responses to submaximal exercise in COVID-19 patients near hospital discharge: A randomized crossover trial.

Author

Poncin W, Schalkwijk A, Vander Straeten C, Braem F, Latiers F, and Reychler G

Subjects
Cross-Over Studies, Dyspnea etiology, Hospitals, Humans, Patient Discharge, COVID-19 prevention & control, Masks
Abstract

Background: Wearing a surgical mask in hospitalized patients has become recommended during care, including rehabilitation, to mitigate coronavirus disease 2019 (COVID-19) transmission. However, the mask may increase dyspnoea and raise concerns in promoting rehabilitation activities in post-acute COVID-19 patients., Objective: To evaluate the impact of the surgical mask on dyspnoea, exercise performance and cardiorespiratory response during a 1-min sit-to-stand test in hospitalized COVID-19 patients close to discharge., Methods: COVID-19 patients whose hospital discharge has been planned the following day performed in randomized order two sit-to-stand tests with or without a surgical mask. Outcome measures were recorded before, at the end, and after two minutes of recovery of each test. Dyspnoea (modified Borg scale), cardiorespiratory parameters and sit-to-stand repetitions were measured., Results: Twenty-eight patients aged 52 ± 10 years were recruited. Compared to unmasked condition, dyspnoea was significantly higher with the mask before and at the end of the sit-to-stand test (mean difference[95%CI]: 1.0 [0.6, 1.4] and 1.7 [0.8, 2.6], respectively). The difference was not significant after the recovery period. The mask had no impact on cardiorespiratory parameters nor the number of sit-to-stand repetitions., Conclusion: In post-acute COVID-19 patients near hospital discharge, the surgical mask increased dyspnoea at rest and during a submaximal exercise test but had no impact on cardiorespiratory response or exercise performance. Patients recovering from COVID-19 should be reassured that wearing a surgical facemask during physical or rehabilitation activities is safe. These data may also mitigate fears to refer these patients in rehabilitation centres where mask-wearing has become mandatory.

Published
2022
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20. Systems on Top of Nasal Cannula Improve Oxygen Delivery in Patients with COVID-19: a Randomized Controlled Trial.

Author

Poncin W, Baudet L, Braem F, Reychler G, Duprez F, Liistro G, Belkhir L, Yombi JC, and De Greef J

Subjects
Adult, Cannula, Humans, Masks, Oxygen, Pandemics, COVID-19
Abstract

Background: Treating hypoxemia while meeting the soaring demands of oxygen can be a challenge during the COVID-19 pandemic., Objective: To determine the efficacy of the surgical facemask and the double-trunk mask on top of the low-flow oxygen nasal cannula on arterial partial pressure of oxygen (PaO 2 ) in hypoxemic COVID-19 patients., Design: Randomized controlled trial., Participants: Hospitalized adults with COVID-19 and hypoxemia treated with the low-flow nasal cannula were enrolled between November 13, 2020, and March 05, 2021., Interventions: Patients were randomized in a 1:1:1 ratio to receive either the nasal cannula alone (control) or the nasal cannula covered by the surgical facemask or the double-trunk mask. Arterial blood gases were collected at baseline and 30 min after the use of each system. The oxygen output was adapted afterwards to retrieve the baseline pulse oxygen saturation. The final oxygen output value was recorded after another 30-min period., Main Measures: The primary outcome was the absolute change in PaO 2 . Secondary outcomes included changes in oxygen output, arterial partial pressure of carbon dioxide (PaCO 2 ), vital parameters, and breathlessness., Key Results: Arterial blood samples were successfully collected in 24/27 (8 per group) randomized patients. Compared to the nasal cannula alone, PaO 2 increased with the surgical facemask (mean change: 20 mmHg, 95% CI: 0.7-38.8; P = .04) and with the double-trunk mask (mean change: 40 mmHg; 95% CI: 21-59; P < .001). Oxygen output was reduced when adding the surgical facemask (median reduction: 1.5 L/min [95% CI: 0.5-4.5], P < .001) or the double-trunk mask (median reduction: 3.3 L/min [95% CI: 2-5], P < .001). The double-trunk mask was associated with a PaCO 2 increase of 2.4 mmHg ([95% CI: 0-4.7], P = .049). Neither mask influenced vital parameters or breathlessness., Conclusions: The addition of the surgical facemask or the double-trunk mask above the nasal cannula improves arterial oxygenation and reduces oxygen consumption., (© 2022. The Author(s) under exclusive licence to Society of General Internal Medicine.)

Published
2022
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21. Follow-up of functional exercise capacity in patients with COVID-19: It is improved by telerehabilitation.

Author

Martin I, Braem F, Baudet L, Poncin W, Fizaine S, Aboubakar F, Froidure A, Pilette C, Liistro G, De Greef J, Yildiz H, Pothen L, Yombi JC, Belkhir L, and Reychler G

Subjects
Aged, Belgium epidemiology, COVID-19 epidemiology, COVID-19 physiopathology, Female, Follow-Up Studies, Humans, Male, Middle Aged, Prospective Studies, SARS-CoV-2, COVID-19 rehabilitation, Exercise Therapy methods, Exercise Tolerance physiology, Pandemics, Recovery of Function, Telerehabilitation methods
Abstract

Background: The impact of the COVID-19 pandemic on functional exercise capacity seemed quickly clinically evident. The objective of this study was to assess the functional exercise capacity of patients with severe COVID-19 and to evaluate the effect of a telerehabilitation program in the specific context of the COVID-19 pandemic., Method: Patients hospitalized for severe or critical COVID-19 were recruited. The functional exercise capacity (1-min sit-to-stand test (STST)) was prospectively quantified at discharge. A telerehabilitation program was then proposed. A control group was composed with the patients refusing the program., Results: At discharge, none of the 48 recruited patients had a STST higher than the 50th percentile and 77% of them were below the 2.5th percentile. SpO2 was 92.6 ± 3.0% after STST and 15 patients had oxygen desaturation. After 3-months of follow-up, the number of repetitions during STST significantly increased either in telerehabilitation (n = 14) (p < 0.001) or in control groups (n = 13) (p = 0.002) but only one patient had a result higher than the 50th percentile (in Telerehabilitation group) and 37% of them were still under the 2.5th percentile for this result. The improvement was significantly and clinically greater after the telerehabilitation program (p = 0.005). No adverse events were reported by the patients during the program., Conclusions: Patients hospitalized for COVID-19 have a low functional exercise capacity at discharge and the recovery after three months is poor. The feasibility and the effect of a simple telerehabilitation program were verified, this program being able to substantially improve the functional recovery after three months., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

Published
2021
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