Measurement of the D∗± cross section in two photon collisions at LEP

Autor: D. Buskulic, D. Casper, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J.-P. Lees, M.-N. Minard, P. Odier, B. Pietrzyk, F. Ariztizabal, M. Chmeissani, J.M. Crespo, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosman, V. Gaitan, Ll. Garrido, M. Martinez, S. Orteu, A. Pacheco, C. Padilla, F. Palla, A. Pascual, J.A. Perlas, F. Sanchez, F. Teubert, D. Creanza, M. de Palma, A. Farilla, G. Iaselli, G. Maggi, N. Marinelli, S. Natali, S. Nuzzo, A. Ranieri, G. Raso, F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, G. Bonvicini, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, A. Engelhardt, R.W. Forty, M. Frank, M. Girone, R. Hagelberg, J. Harvey, R. Jacobsen, P. Janot, B. Jost, J. Knobloch, I. Lehraus, M. Maggi, C. Markou, E.B. Martin, P. Mato, H. Meinhard, A. Minten, R. Miquel, T. Oest, P. Palazzi, J.R. Pater, P. Perrodo, J.-F. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, O. Schneider, W. Tejessy, I.R. Tomalin, A. Venturi, H. Wachsmuth, W. Wiedenmann, T. Wildish, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Barres, C. Boyer, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J-C. Montret, D. Pallin, P. Perret, F. Podlyski, J. Proriol, J.-M. Rossignol, F. Saadi, T. Fearnley, J.B. Hansen, J.D. Hansen, J.R. Hansen, P.H. Hansen, B.S. Nilsson, A. Kyriakis, E. Simopoulou, I. Siotis, A. Vayaki, K. Zachariadou, A. Blondel, G. Bonneaud, J.C. Brient, P. Bourdon, L. Passalacqua, A. Rougé, M. Rumpf, R. Tanaka, A. Valassi, M. Verderi, H. Videau, D.J. Candlin, M.I. Parsons, E. Focardi, G. Parrini, M. Corden, M. Delfino, C. Georgiopoulos, D.E. Jaffe, A. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, F. Cerutti, V. Chiarella, G. Felici, P. Laurelli, G. Mannocchi, F. Murtas, G.P. Murtas, M. Pepe-Altarelli, S.J. Dorris, A.W. Halley, I. ten Have, I.G. Knowles, J.G. Lynch, W.T. Morton, V. O'Shea, C. Raine, P. Reeves, J.M. Scarr, K. Smith, M.G. Smith, A.S. Thompson, F. Thomson, S. Thorn, R.M. Turnbull, U. Becker, O. Braun, C. Geweniger, G. Graefe, P. Hanke, V. Hepp, E.E. Kluge, A. Putzer, B. Rensch, M. Schmidt, J. Sommer, H. Stenzel, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D.M. Binnie, W. Cameron, D.J. Colling, P.J. Dornan, N. Konstantinidis, L. Moneta, A. Moutoussi, J. Nash, G. San Martin, J.K. Sedgbeer, A.M. Stacey, G. Dissertori, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, C.K. Bowdery, T.J. Brodbeck, P. Colrain, G. Crawford, A.J. Finch, F. Foster, G. Hughes, T. Sloan, E.P. Whelan, M.I. Williams, A. Galla, A.M. Greene, K. Kleinknecht, G. Quast, J. Raab, B. Renk, H.-G. Sander, R. Wanke, C. Zeitnitz, J.J. Aubert, A.M. Bencheikh, C. Benchouk, A. Bonissent, G. Bujosa, D. Calvet, J. Carr, C. Diaconu, F. Etienne, M. Thulasidas, D. Nicod, P. Payre, D. Rousseau, M. Talby, I. Abt, R. Assmann, C. Bauer, W. Blum, D. Brown, H. Dietl, F. Dydak, C. Gotzhein, K. Jakobs, H. Kroha, G. Lütjens, G. Lutz, W. Männer, H.-G. Moser, R. Richter, A. Rosado-Schlosser, R. Settles, H. Seywerd, U. Stierlin, R.St. Denis, G. Wolf, R. Alemany, J. Boucrot, O. Callot, A. Cordier, F. Courault, M. Davier, L. Duflot, J.-F. Grivaz, Ph. Heusse, M. Jacquet, D.W. Kim, F. Le Diberder, J. Lefrançois, A.-M. Lutz, G. Musolino, I. Nikolic, H.J. Park, I.C. Park, M.-H. Schune, S. Simion, J.-J. Veillet, I. Videau, D. Abbaneo, P. Azzurri, G. Bagliesi, G. Batignani, S. Bettarini, C. Bozzi, G. Calderini, M. Carpinelli, M.A. Ciocci, V. Ciulli, R. Dell'Orso, R. Fantechi, I. Ferrante, L. Foà, F. Forti, A. Giassi, M.A. Giorgi, A. Gregorio, F. Ligabue, A. Lusiani, P.S. Marrocchesi, A. Messineo, G. Rizzo, G. Sanguinetti, A. Sciabà, P. Spagnolo, J. Steinberger, R. Tenchini, G. Tonelli, G. Triggiani, C. Vannini, P.G. Verdini, J. Walsh, A.P. Betteridge, G.A. Blair, L.M. Bryant, Y. Gao, M.G. Green, D.L. Johnson, T. Medcalf, Ll.M. Mir, J.A. Strong, V. Bertin, D.R. Botterill, R.W. Clifft, T.R. Edgecock, S. Haywood, M. Edwards, P. Maley, P.R. Norton, J.C. Thompson, B. Bloch-Devaux, P. Colas, H. Duarte, S. Emery, W. Kozanecki, E. Lançon, M.C. Lemaire, E. Locci, B. Marx, P. Perez, J. Rander, J.-F. Renardy, A. Rosowsky, A. Roussarie, J.-P. Schuller, J. Schwindling, D. Si Mohand, A. Trabelsi, B. Vallage, R.P. Johnson, H.Y. Kim, A.M. Litke, M.A. McNeil, G. Taylor, A. Beddall, C.N. Booth, R. Boswell, S. Cartwright, F. Combley, I. Dawson, A. Koksal, M. Letho, W.M. Newton, C. Rankin, L.F. Thompson, A. Böhrer, S. Brandt, G. Cowan, E. Feigl, C. Grupen, G. Lutters, J. Minguet-Rodriguez, F. Rivera, P. Saraiva, L. Smolik, F. Stephan, L. Bosisio, R. Della Marina, G. Ganis, G. Giannini, B. Gobbo, L. Pitis, F. Ragusa, J. Rothberg, S. Wasserbaech, S.R. Armstrong, L. Bellantoni, P. Elmer, Z. Feng, D.P.S. Ferguson, Y.S. Gao, S. González, J. Grahl, J.L. Harton, O.J. Hayes, H. Hu, P.A. McNamara, J.M. Nachtman, W. Orejudos, Y.B. Pan, Y. Saadi, M. Schmitt, I.J. Scott, V. Sharma, J.D. Turk, A.M. Walsh, F.V. Weber, Sau Lan Wu, X. Wu, J.M. Yamartino, M. Zheng, G. Zobernig
Přispěvatelé: D., Buskulic, D., Casper, I., De Boni, D., Decamp, P., Ghez, C., Goy, J. P., Lee, M. N., Minard, P., Odier, B., Pietrzyk, F., Ariztizabal, M., Chmeissani, J. M., Crespo, I., Efthymiopoulo, E., Fernandez, M., Fernandez Bosman, V., Gaitan, Garrido, L. l., M., Martinez, S., Orteu, A., Pacheco, C., Padilla, F., Palla, A., Pascual, J. A., Perla, F., Sanchez, F., Teubert, D., Creanza, M., de Palma, A., Farilla, G., Iaselli, G., Maggi, N., Marinelli, S., Natali, S., Nuzzo, A., Ranieri, G., Raso, F., Romano, F., Ruggieri, G., Selvaggi, L., Silvestri, P., Tempesta, G., Zito, X., Huang, J., Lin, Q., Ouyang, T., Wang, Y., Xie, R., Xu, S., Xue, J., Zhang, L., Zhang, W., Zhao, G., Bonvicini, M., Cattaneo, P., Coma, P., Coyle, H., Drevermann, A., Engelhardt, R. W., Forty, M., Frank, M., Girone, R., Hagelberg, J., Harvey, R., Jacobsen, P., Janot, B., Jost, J., Knobloch, I., Lehrau, M., Maggi, C., Markou, E. B., Martin, P., Mato, H., Meinhard, A., Minten, R., Miquel, T., Oest, P., Palazzi, J. R., Pater, P., Perrodo, J. F., Pusztaszeri, F., Ranjard, P., Rensing, L., Rolandi, D., Schlatter, M., Schmelling, O., Schneider, W., Tejessy, I. R., Tomalin, A., Venturi, H., Wachsmuth, W., Wiedenmann, T., Wildish, W., Witzeling, J., Wotschack, Z., Ajaltouni, M., Bardadin Otwinowska, A., Barre, C., Boyer, A., Falvard, P., Gay, C., Guicheney, P., Henrard, J., Jousset, B., Michel, S., Monteil, J. C., Montret, D., Pallin, P., Perret, F., Podlyski, J., Proriol, J. M., Rossignol, F., Saadi, T., Fearnley, J. B., Hansen, J. D., Hansen, J. R., Hansen, P. H., Hansen, B. S., Nilsson, A., Kyriaki, E., Simopoulou, I., Sioti, A., Vayaki, K., Zachariadou, A., Blondel, G., Bonneaud, J. C., Brient, P., Bourdon, L., Passalacqua, A., Rougé, M., Rumpf, R., Tanaka, A., Valassi, M., Verderi, H., Videau, D. J., Candlin, M. I., Parson, E., Focardi, G., Parrini, M., Corden, M., Delfino, C., Georgiopoulo, D. E., Jaffe, A., Antonelli, G., Bencivenni, G., Bologna, F., Bossi, P., Campana, G., Capon, F., Cerutti, V., Chiarella, G., Felici, P., Laurelli, G., Mannocchi, F., Murta, G. P., Murta, M., Pepe Altarelli, S. J., Dorri, A. W., Halley, I., ten Have, I. G., Knowle, J. G., Lynch, W. T., Morton, V., O'Shea, C., Raine, P., Reeve, J. M., Scarr, K., Smith, M. G., Smith, A. S., Thompson, F., Thomson, S., Thorn, R. M., Turnbull, U., Becker, O., Braun, C., Geweniger, G., Graefe, P., Hanke, V., Hepp, E. E., Kluge, A., Putzer, B., Rensch, M., Schmidt, J., Sommer, H., Stenzel, K., Tittel, S., Werner, M., Wunsch, R., Beuselinck, D. M., Binnie, W., Cameron, D. J., Colling, P. J., Dornan, N., Konstantinidi, L., Moneta, A., Moutoussi, J., Nash, G., San Martin, J. K., Sedgbeer, A. M., Stacey, G., Dissertori, P., Girtler, E., Kneringer, D., Kuhn, G., Rudolph, C. K., Bowdery, T. J., Brodbeck, P., Colrain, G., Crawford, A. J., Finch, F., Foster, G., Hughe, T., Sloan, E. P., Whelan, M. I., William, A., Galla, A. M., Greene, K., Kleinknecht, G., Quast, J., Raab, B., Renk, H. G., Sander, R., Wanke, C., Zeitnitz, J. J., Aubert, A. M., Bencheikh, C., Benchouk, A., Bonissent, G., Bujosa, D., Calvet, J., Carr, C., Diaconu, F., Etienne, M., Thulasida, D., Nicod, P., Payre, D., Rousseau, M., Talby, I., Abt, R., Assmann, C., Bauer, W., Blum, D., Brown, H., Dietl, F., Dydak, C., Gotzhein, K., Jakob, H., Kroha, G., Lütjen, G., Lutz, W., Männer, H. G., Moser, R., Richter, A., Rosado Schlosser, R., Settle, H., Seywerd, U., Stierlin, Denis, R. S. t., G., Wolf, R., Alemany, J., Boucrot, O., Callot, A., Cordier, F., Courault, M., Davier, L., Duflot, J. F., Grivaz, Heusse, P. h., M., Jacquet, D. W., Kim, F., Le Diberder, J., Lefrançoi, A. M., Lutz, G., Musolino, I., Nikolic, H. J., Park, I. C., Park, M. H., Schune, S., Simion, J. J., Veillet, I., Videau, D., Abbaneo, P., Azzurri, G., Bagliesi, G., Batignani, S., Bettarini, C., Bozzi, G., Calderini, M., Carpinelli, M. A., Ciocci, V., Ciulli, R., Dell'Orso, R., Fantechi, I., Ferrante, L., Foà, F., Forti, A., Giassi, M. A., Giorgi, Gregorio, Anna, F., Ligabue, A., Lusiani, P. S., Marrocchesi, A., Messineo, G., Rizzo, G., Sanguinetti, A., Sciabà, P., Spagnolo, J., Steinberger, R., Tenchini, G., Tonelli, G., Triggiani, C., Vannini, P. G., Verdini, J., Walsh, A. P., Betteridge, G. A., Blair, L. M., Bryant, Y., Gao, M. G., Green, D. L., Johnson, T., Medcalf, Mir, L. l. M., J. A., Strong, V., Bertin, D. R., Botterill, R. W., Clifft, T. R., Edgecock, S., Haywood, M., Edward, P., Maley, P. R., Norton, J. C., Thompson, B., Bloch Devaux, P., Cola, H., Duarte, S., Emery, W., Kozanecki, E., Lançon, M. C., Lemaire, E., Locci, B., Marx, P., Perez, J., Rander, J. F., Renardy, A., Rosowsky, A., Roussarie, J. P., Schuller, J., Schwindling, D., Si Mohand, A., Trabelsi, B., Vallage, R. P., Johnson, H. Y., Kim, A. M., Litke, M. A., Mcneil, G., Taylor, A., Beddall, C. N., Booth, R., Boswell, S., Cartwright, F., Combley, I., Dawson, A., Koksal, M., Letho, W. M., Newton, C., Rankin, L. F., Thompson, A., Böhrer, S., Brandt, G., Cowan, E., Feigl, C., Grupen, G., Lutter, J., Minguet Rodriguez, F., Rivera, P., Saraiva, L., Smolik, F., Stephan, Bosisio, Luciano, R., Della Marina, G., Gani, Giannini, Gianrossano, B., Gobbo, L., Piti, F., Ragusa, J., Rothberg, S., Wasserbaech, S. R., Armstrong, L., Bellantoni, P., Elmer, Z., Feng, D. P. S., Ferguson, Y. S., Gao, S., González, J., Grahl, J. L., Harton, O. J., Haye, H., Hu, P. A., Mcnamara, J. M., Nachtman, W., Orejudo, Y. B., Pan, Y., Saadi, M., Schmitt, I. J., Scott, V., Sharma, J. D., Turk, A. M., Walsh, F. V., Weber, Sau Lan, Wu, X., Wu, J. M., Yamartino, M., Zheng, G., Zobernig, Buskulic, D, Casper, D, Debonis, I, Decamp, D, Ghez, P, Goy, C, Lees, J, Minard, M, Odier, P, Pietrzyk, B, Ariztizabal, F, Chmeissani, M, Crespo, J, Efthymiopoulos, I, Fernandez, E, Fernandezbosman, M, Gaitan, V, Garrido, L, Martinez, M, Orteu, S, Pacheco, A, Padilla, C, Palla, F, Pascual, A, Perlas, J, Sanchez, F, Teubert, F, Creanza, D, Depalma, M, Farilla, A, Iaselli, G, Maggi, G, Marinelli, N, Natali, S, Nuzzo, S, Ranieri, A, Raso, G, Romano, F, Ruggieri, F, Selvaggi, G, Silvestris, L, Tempesta, P, Zito, G, Huang, X, Lin, J, Ouyang, Q, Wang, T, Xie, Y, Xu, R, Xue, S, Zhang, J, Zhang, L, Zhao, W, Bonvicini, G, Cattaneo, M, Comas, P, Coyle, P, Drevermann, H, Engelhardt, A, Forty, R, Frank, M, Girone, M, Hagelberg, R, Harvey, J, Jacobsen, R, Janot, P, Jost, B, Knobloch, J, Lehraus, I, Maggi, M, Markou, C, Martin, E, Mato, P, Meinhard, H, Minten, A, Miquel, R, Oest, T, Palazzi, P, Pater, J, Perrodo, P, Pusztaszeri, J, Ranjard, F, Rensing, P, Rolandi, L, Schlatter, D, Schmelling, M, Schneider, O, Tejessy, W, Tomalin, I, Venturi, A, Wachsmuth, H, Wiedenmann, W, Wildish, T, Witzeling, W, Wotschack, J, Ajaltouni, Z, Bardadinotwinowska, M, Barres, A, Boyer, C, Falvard, A, Gay, P, Guicheney, C, Henrard, P, Jousset, J, Michel, B, Monteil, S, Montret, J, Pallin, D, Perret, P, Podlyski, F, Proriol, J, Rossignol, J, Saadi, F, Fearnley, T, Hansen, J, Hansen, P, Nilsson, B, Kyriakis, A, Simopoulou, E, Siotis, I, Vayaki, A, Zachariadou, K, Blondel, A, Bonneaud, G, Brient, J, Bourdon, P, Passalacqua, L, Rouge, A, Rumpf, M, Tanaka, R, Valassi, A, Verderi, M, Videau, H, Candlin, D, Parsons, M, Focardi, E, Parrini, G, Corden, M, Delfino, M, Georgiopoulos, C, Jaffe, D, Antonelli, A, Bencivenni, G, Bologna, G, Bossi, F, Campana, P, Capon, G, Cerutti, F, Chiarella, V, Felici, G, Laurelli, P, Mannocchi, G, Murtas, F, Murtas, G, Pepealtarelli, M, Dorris, S, Halley, A, Tenhave, I, Knowles, I, Lynch, J, Morton, W, Oshea, V, Raine, C, Reeves, P, Scarr, J, Smith, K, Smith, M, Thompson, A, Thomson, F, Thorn, S, Turnbull, R, Becker, U, Braun, O, Geweniger, C, Graefe, G, Hanke, P, Hepp, V, Kluge, E, Putzer, A, Rensch, B, Schmidt, M, Sommer, J, Stenzel, H, Tittel, K, Werner, S, Wunsch, M, Beuselinck, R, Binnie, D, Cameron, W, Colling, D, Dornan, P, Konstantinidis, N, Moneta, L, Moutoussi, A, Nash, J, Sanmartin, G, Sedgbeer, J, Stacey, A, Dissertori, G, Girtler, P, Kneringer, E, Kuhn, D, Rudolph, G, Bowdery, C, Brodbeck, T, Colrain, P, Crawford, G, Finch, A, Foster, F, Hughes, G, Sloan, T, Whelan, E, Williams, M, Galla, A, Greene, A, Kleinknecht, K, Quast, G, Raab, J, Renk, B, Sander, H, Wanke, R, Zeitnitz, C, Aubert, J, Bencheikh, A, Benchouk, C, Bonissent, A, Bujosa, G, Calvet, D, Carr, J, Diaconu, C, Etienne, F, Thulasidas, M, Nicod, D, Payre, P, Rousseau, D, Talby, M, Abt, I, Assmann, R, Bauer, C, Blum, W, Brown, D, Dietl, H, Dydak, F, Gotzhein, C, Jakobs, K, Kroha, H, Lutjens, G, Lutz, G, Manner, W, Moser, H, Richter, R, Rosadoschlosser, A, Settles, R, Seywerd, H, Stierlin, U, Stdenis, R, Wolf, G, Alemany, R, Boucrot, J, Callot, O, Cordier, A, Courault, F, Davier, M, Duflot, L, Grivaz, J, Heusse, P, Jacquet, M, Kim, D, Lediberder, F, Lefrancois, J, Lutz, A, Musolino, G, Nikolic, I, Park, H, Park, I, Schune, M, Simion, S, Veillet, J, Videau, I, Abbaneo, D, Azzurri, P, Bagliesi, G, Batignani, G, Bettarini, S, Bozzi, C, Calderini, G, Carpinelli, M, Ciocci, M, Ciulli, V, Dellorso, R, Fantechi, R, Ferrante, I, Foa, L, Forti, F, Giassi, A, Giorgi, M, Gregorio, A, Ligabue, F, Lusiani, A, Marrocchesi, P, Messineo, A, Rizzo, G, Sanguinetti, G, Sciaba, A, Spagnolo, P, Steinberger, J, Tenchini, R, Tonelli, G, Triggiani, G, Vannini, C, Verdini, P, Walsh, J, Betteridge, A, Blair, G, Bryant, L, Gao, Y, Green, M, Johnson, D, Medcalf, T, Mir, L, Strong, J, Bertin, V, Botterill, D, Clifft, R, Edgecock, T, Haywood, S, Edwards, M, Maley, P, Norton, P, Thompson, J, Blochdevaux, B, Colas, P, Duarte, H, Emery, S, Kozanecki, W, Lancon, E, Lemaire, M, Locci, E, Marx, B, Perez, P, Rander, J, Renardy, J, Rosowsky, A, Roussarie, A, Schuller, J, Schwindling, J, Mohand, D, Trabelsi, A, Vallage, B, Johnson, R, Kim, H, Litke, A, Mcneil, M, Taylor, G, Beddall, A, Booth, C, Boswell, R, Cartwright, S, Combley, F, Dawson, I, Koksal, A, Letho, M, Newton, W, Rankin, C, Thompson, L, Bohrer, A, Brandt, S, Cowan, G, Feigl, E, Grupen, C, Lutters, G, Minguetrodriguez, J, Rivera, F, Saraiva, P, Smolik, L, Stephan, F, Bosisio, L, Dellamarina, R, Ganis, G, Giannini, G, Gobbo, B, Pitis, L, Ragusa, F, Rothberg, J, Wasserbaech, S, Armstrong, S, Bellantoni, L, Elmer, P, Feng, Z, Ferguson, D, Gonzalez, S, Grahl, J, Harton, J, Hayes, O, Hu, H, Mcnamara, P, Nachtman, J, Orejudos, W, Pan, Y, Saadi, Y, Schmitt, M, Scott, I, Sharma, V, Turk, J, Walsh, A, Weber, F, Wu, S, Wu, X, Yamartino, J, Zheng, M, Zobernig, G, Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), ALEPH, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Chadelas, Michèle
Jazyk: angličtina
Rok vydání: 1995
Předmět:
Zdroj: Physics Letters B
Physics Letters B, Elsevier, 1995, 355, pp.595-605
Physics Letters B, 1995, 355, pp.595-605
Scopus-Elsevier
ISSN: 0370-2693
Popis: The inclusive production of D ∗± mesons in photon-photon collisions has been measured by the Aleph experiment at LEP with a beam energy of 45 GeV. The D ∗+ are detected in their decay to D 0 π + with the D 0 observed in three separate decay modes: (1) K − π + , (2) K − π + π 0 and (3) K − π + π − π + , and analagously for the D ∗− modes. A total of 33 events was observed from an integrated luminosity of 73 pb −1 which corresponds to a cross section for Σ( e + e − → e + e − D ∗± X ) of 155 ± 33 ± 21 pb. This result is compatible with both the direct production γγ → c c in the Born approximation and with a more complete calculation which includes both radiative QCD corrections and contributions in which one of the photons is first resolved into its quark and gluon constituents. The shapes of distributions for events containing a D ∗+ are found to be better described by the latter.
Databáze: OpenAIRE
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