Search

Your search keyword '"Hill, R. D."' showing total 347 results
Start Over Author "Hill, R. D." Language english
347 results on '"Hill, R. D."'

14. Obituary

Author

Hill, R. D.

Published
1998

47. Measurement of Z-pair production in e(+)e(-) collisions and constraints on anomalous neutral gauge couplings

Author

Heister, A., Schael, S., Barate, R., Brunelière, R., DE BONIS, I., Decamp, D., Goy, C., Jezequel, S., Lees, J. P., Martin, F., Merle, E., Minard, M. N., Trocmé, B. PIETRZYK AND B., Boix, G., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., FERNANDEZ BOSMAN, M., Garrido, L. L., Graugés, E., Lopez, J., Martinez, M., Merino, G., Miquel, R., Mir, L. L. M., Pacheco, A., Ruiz, D. PANEQUE AND H., Colaleo, A., Creanza, Donato Maria, DE FILIPPIS, Nicola, DE PALMA, M., Iaselli, Giuseppe, Maggi, Giorgio Pietro, Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Zito, A. TRICOMI AND G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhao, L. ZHANG AND W., Abbaneo, D., Azzurri, P., Barklow, T., Buchmüller, O., Cattaneo, M., Cerutti, F., Clerbaux, B., Drevermann, H., Forty, R. W., Frank, M., Gianotti, F., Greening, T. C., Hansen, J. B., Harvey, J., Hutchcroft, D. E., Janot, P., Jost, B., Kado, M., Maley, P., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Sguazzoni, G., Tejessy, W., Teubert, F., Valassi, A., Ward, I. VIDEAU AND J. J., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Perret, J. M. PASCOLO AND P., Hansen, J. D., Hansen, J. R., Hansen, P. H., Wäänänen, B. S. NILSSON AND A., Kyriakis, A., Markou, C., Simopoulou, E., Zachariadou, A. VAYAKI AND K., Blondel, A., Brient, J. C., Machefert, F., Rougé, A., Swynghedauw, M., Videau, R. TANAKA AND H., Ciulli, V., Parrini, E. FOCARDI AND G., Antonelli, A., Antonelli, M., Bencivenni, G., Bologna, G., Bossi, F., Campana, P., Capon, G., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, F., Murtas, G. P., Passalacqua, L., Spagnolo, M. PEPE ALTARELLI AND P., Kennedy, J., Lynch, J. G., Negus, P., O'Shea, V., Thompson, D. SMITH AND A. S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E. E., Leibenguth, G., Putzer, A., Tittel, K., Wunsch, S. WERNER AND M., Beuselinck, R., Binnie, D. M., Cameron, W., Davies, G., Dornan, P. J., Girone, M., Hill, R. D., Marinelli, N., Nowell, J., Przysiezniak, H., Rutherford, S. A., Sedgbeer, J. K., White, J. C. THOMPSON AND R., Ghete, V. M., Girtler, P., Kneringer, E., Rudolph, D. KUHN AND G., BOUHOVA THACKER, E., Bowdery, C. K., Clarke, D. P., Ellis, G., Finch, A. J., Foster, F., Hughes, G., Jones, R. W. L., Pearson, M. R., Smizanska, N. A. ROBERTSON AND M., Lemaitre, V., Blumenschein, U., Hölldorfer, F., Jakobs, K., Kayser, F., Kleinknecht, K., Müller, A. S., Quast, G., Renk, B., Sander, H. G., Schmeling, S., Wachsmuth, H., Ziegler, C. ZEITNITZ AND T., Bonissent, A., Carr, J., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Leroy, O., Kachelhoffer, T., Payre, P., Tilquin, D. ROUSSEAU AND A., Ragusa, F., David, A., Dietl, H., Ganis, G., Hüttmann, K., Lütjens, G., Mannert, C., Männer, W., Moser, H. G., Settles, R., Wolf, H. STENZEL AND G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J. F., Heusse, P. H., Jacholkowska, A., Loomis, C., Serin, L., Veillet, J. J., Yuan, J. B. DE VIVIE DE RÉGIE AND C., Bagliesi, G., Boccali, T., Foà, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciabà, A., Tenchini, R., Verdini, A. VENTURI AND P. G., Awunor, O., Blair, G. A., Coles, J., Cowan, G., GARCIA BELLIDO, A., Green, M. G., Jones, L. T., Medcalf, T., Misiejuk, A., TEIXEIRA DIAS, J. A. STRONG AND P., Clifft, R. W., Edgecock, T. R., Tomalin, P. R. NORTON AND I. R., BLOCH DEVAUX, B., Boumediene, D., Colas, P., Fabbro, B., Lançon, E., Lemaire, M. C., Locci, E., Perez, P., Rander, J., Renardy, J. F., Rosowsky, A., Seager, P., Trabelsi, A., Vallage, B. TUCHMING AND B., Konstantinidis, N., Taylor, A. M. LITKE AND G., Booth, C. N., Cartwright, S., Combley, F., Hodgson, P. N., Thompson, M. LEHTO AND L. F., Affholderbach, K., Böhrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Sieler, G. PRANGE AND U., Giannini, C. BOREAN AND G., He, H., Rothberg, J. PUTZ AND J., Armstrong, S. R., Berkelman, K., Cranmer, K., Ferguson, D. P. S., Gao, Y., González, S., Hayes, O. J., Hu, H., Jin, S., Kile, J., Mcnamara, P. A., Iii, Nielsen, J., Pan, Y. B., VON WIMMERSPERG TOELLER, J. H., Wiedenmann, W., Wu, J., S. L., Wu, Zobernig, X. WU AND G., Dissertori, 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), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), 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), 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), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, ALEPH, SCHAEL S, BARATE R, BRUNELIERE R, DE BONIS I, DECAMP D, GOY C, JEZEQUEL S, LEES J, MARTIN F, MERLE E, MINARD M, PIETRZYK B, TROCME B, BRAVO S, CASADO MP, CHMEISSANI M, CRESPO JM, FERNANDEZ E, FERNANDEZ-BOSMAN M, GARRIDO L, MARTINEZ M, PACHECO A, RUIZ H, COLALEO A, CREANZA D, DE FILIPPIS N, DE PALMA M, IASELLI G, MAGGI G, MAGGI M, NUZZO S, RANIERI A, RASO G, RUGGIERI F, SELVAGGI G, SILVESTRIS L, TEMPESTA P, TRICOMI A, ZITO G, HUANG X, LIN J, OUYANG Q, WANG T, XIE Y, XU R, XUE S, ZHANG J, ZHANG L, ZHAO W, ABBANEO D, BARKLOW T, BUCHMULLER O, CATTANEO M, CLERBAUX B, DREVERMANN H, FORTY RW, FRANK M, GIANOTTI F, HANSEN JB, HARVEY J, HUTCHCROFT DE, JANOT P, JOST B, KADO M, MATO P, MOUTOUSSI A, RANJARD F, ROLANDI L, SCHLATTER D, TEUBERT F, VALASSI A, VIDEAU I, BADAUD F, DESSAGNE S, FALVARD A, FAYOLLE D, GAY P, JOUSSET J, MICHEL B, MONTEIL S, PALLIN D, PASCOLO JM, PERRET P, HANSEN JD, HANSEN JR, HANSEN PH, KRAAN AC, NILSSON BS, KYRIAKIS A, MARKOU C, SIMOPOULOU E, VAYAKI A, ZACHARIADOU K, BLONDEL A, BRIENT J, MACHEFERT F, ROUGE, VIDEAU H, CIULLI V, FOCARDI E, PARRINI G, ANTONELLI A, ANTONELLI M, BENCIVENNI G, BOSSI F, CAPON G, CERUTTI F, CHIARELLA V, LAURELLI P, MANNOCCHI G, MURTAS GP, PASSALACQUA L, KENNEDY J, LYNCH JG, NEGUS P, O'SHEA V, THOMPSON AS, WASSERBAECH S, CAVANAUGH R, DHAMOTHARAN S, GEWENIGER C, HANKE P, HEPP V, KLUGE EE, PUTZER A, STENZEL H, TITTEL K, WUNSCH M, BEUSELINCK R, CAMERON W, DAVIES G, DORNAN PJ, GIRONE M, MARINELLI N, NOWELL J, RUTHERFORD SA, SEDGBEER JK, THOMPSON JC, WHITE R, GHETE VM, GIRTLER P, KNERINGER E, KUHN D, RUDOLPH G, BOUHOVA-THACKER E, BOWDERY CK, CLARKE DP, ELLIS G, FINCH AJ, FOSTER F, HUGHES G, JONES RWL, PEARSON MR, ROBERTSON NA, SLOAN T, SMIZANSKA M, VAN DER AA O, DELAERE C, LEIBENGUTH G, LEMAITRE V, BLUMENSCHEIN U, HO, LLDORFER F, JAKOBS K, KAYSER F, MULLER A, RENK B, SANDER H, SCHMELING S, WACHSMUTH H, ZEITNITZ C, ZIEGLER T, BONISSENT A, COYLE P, CURTIL C, EALET A, FOUCHEZ D, PAYRE P, TILQUIN A, RAGUSA F, DAVID A, DIETL H, Schael, S., Barate, R., Bruneliere, R., De Bonis, I., Decamp, D., Goy, C., Jezequel, S., Lees, J. P., Martin, F., Merle, E., Minard, M. N., Pietrzyk, B., Trocme, B., Bravo, S., Casado, M. P., Chmeissani, M., Crespo, J. M., Fernandez, E., Fernandez Bosman, M., Garrido, L. l., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., De Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, J., Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmueller, O., Cattaneo, M., Clerbaux, B., Drevermann, H., Forty, R. W., Frank, M., Gianotti, F., Hansen, J. B., Harvey, J., Hutchcroft, D. E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, Luigi, Schlatter, D., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, A., Fayolle, D., Gay, P., Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J. M., Perret, P., Hansen, J. D., Hansen, J. R., Hansen, P. H., Kraan, A. C., Nilsson, B. S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J. C., Machefert, F., Rouge, A., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Cerutti, F., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G. P., Passalacqua, L., Kennedy, J., Lynch, J. G., Negus, P., O'Shea, V., Thompson, A. S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E. E., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P. J., Girone, M., Marinelli, N., Nowell, J., Rutherford, S. A., Sedgbeer, J. K., Thompson, J. C., White, R., Ghete, V. M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova Thacker, E., Bowdery, C. K., Clarke, D. P., Ellis, G., Finch, A. J., Foster, F., Hughes, G., Jones, R. W. L., Pearson, M. R., Robertson, N. A., Sloan, T., Smizanska, M., van der Aa, O., Delaere, C., Leibenguth, G., Lemaitre, V., Blumenschein, U., Hoelldorfer, F., Jakobs, K., Kayser, F., Mueller, A. S., Renk, B., Sander, H. G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Huettmann, K., Luetjens, G., Maenner, W., Moser, H. G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J. F., Heusse, P. h., Jacholkowska, A., Serin, L., Veillet, J. J., Azzurri, P., Bagliesi, G., Boccali, T., Foa, L., Giammanco, A., Giassi, A., Ligabue, Franco, Messineo, A., Palla, F., Sanguinetti, G., Sciaba, A., Sguazzoni, G., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P. G., Awunor, O., Blair, G. A., Cowan, G., Garcia Bellido, A., Green, M. G., Medcalf, T., Misiejuk, A., Strong, J. A., Teixeira Dias, P., Clifft, R. W., Edgecock, T. R., Norton, P. R., Tomalin, I. R., Ward, J. J., Bloch Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lancon, E., Lemaire, M. C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Litke, A. M., Taylor, G., Booth, C. N., Cartwright, S., Combley, F., Hodgson, P. N., Lehto, M., Thompson, L. F., Boehrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J., Armstrong, S. R., Berkelman, K., Cranmer, K., Ferguson, D. P. S., Gao, Y., Gonzalez, S., Hayes, O. J., Hu, H., Jin, S., Kile, J., McNamara P. A., Iii, Nielsen, J., Pan, Y. B., von Wimmersperg Toeller, J. H., Wiedenmann, W., Wu, J., Wu Sau, Lan, Wu, X., Zobernig, G., Dissertori, G., Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and 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)

Subjects
Physics, Aleph, Particle physics, Nuclear and High Energy Physics, Luminosity (scattering theory), e+-e- Experiments, 010308 nuclear & particles physics, Electron–positron annihilation, Settore FIS/01 - Fisica Sperimentale, Gauge (firearms), 01 natural sciences, Standard Model, Nuclear physics, E +e -experiments, Cross section (physics), Pair production, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, ALEPH experiment, Particle Physics - Experiment
Abstract

The ZZ production cross section is measured from a data sample corresponding to a total integrated luminosity of 452 pb−1, collected by the ALEPH experiment at LEP at centre-of-mass energies from 192 to 209 GeV. Individual cross sections, extracted at six centre-of-mass energies, are found to be in agreement with Standard Model calculations. The results are used to set limits on anomalous neutral gauge couplings. The ZZ production cross section is measured from a data sample corresponding to a total integrated luminosity of 452 pb−1 , collected by the ALEPH experiment at LEP at centre-of-mass energies from 192 to 209 GeV. Individual cross sections, extracted at six centre-of-mass energies, are found to be in agreement with Standard Model calculations. The results are used to set limits on anomalous neutral gauge couplings.

Published
2009

49. A measurement of the gluon splitting rate into $c\overline{c}$ pairs in hadronic Z decays

Author

Heister, A., Schael, S., Barate, R., Bruneliere, R., de Bonis, I., Decamp, D., Goy, C., Jezequel, S., Lees, J P., Martin, F., Merle, E., Minard, M N., Pietrzyk, B., Trocme, B., Bravo, S., Casado, M P., Chmeissani, M., Crespo, J M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., de Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, Jiali, Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmuller, O., Cattaneo, M., Cerutti, F., Clerbaux, B., Drevermann, H., Forty, R W., Frank, M., Gianotti, F., Hansen, J B., Harvey, J., Hutchcroft, D E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Sguazzoni, G., Tejessy, W., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, Alain, Fayolle, D., Gay, Pascal, Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J M., Perret, Pascal, Hansen, J D., Hansen, J R., Hansen, P H., Kraan, A., Nilsson, B S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J C., Machefert, F., Rouge, A., Swynghedauw, M., Tanaka, R., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G P., Passalacqua, L., Kennedy, J., Lynch, J G., Negus, P., O'Shea, V., Thompson, a S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E E., Leibenguth, G., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P J., Girone, M., Hill, R D., Marinelli, N., Nowell, J., Rutherford, S A., Sedgbeer, J K., Thompson, J C., White, R., Ghete, V M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C K., Clarke, D P., Ellis, G., Finch, a J., Foster, F., Hughes, G., Jones, R W L., Pearson, M R., Robertson, N A., Smizanska, M., van Der Aa, O., Delaere, C., Lemaitre, V., Blumenschein, U., Holldorfer, F., Jakobs, K., Kayser, F., Kleinknecht, K., Muller, a S., Renk, B., Sander, H G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Huttmann, K., Lutjens, G., Manner, W., Moser, H G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J J., Azzurri, P., Bagliesi, G., Boccali, T., Foa, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciaba, A., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P G., Awunor, O., Blair, G A., Cowan, G., Garcia-Bellido, A., Green, M G., Jones, L T., Medcalf, T., Misiejuk, A., Strong, J A., Teixeira-Dias, P., Clifft, R W., Edgecock, T R., Norton, P R., Tomalin, I R., Ward, J J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lancon, E., Lemaire, M C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Konstantinidis, N., Litke, a M., Taylor, G., Booth, C N., Cartwright, S., Combley, F., Hodgson, P N., Lehto, M H., Thompson, L F., Bohrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J E., Armstrong, S R., Berkelman, K., Cranmer, K., Ferguson, D P S., Gao, Y., Gonzalez, S., Hayes, O J., Hu, H., Jin, S., Kile, J., Mcnamara, P A., Nielsen, J., Pan, y B., von Wimmersperg-Toller, J H., Wiedenmann, W., Wu, J., Wu, S L., Wu, X., Zobernig, G., Dissertori, 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 de Physique Théorique et Astroparticules (LPTA), Université Montpellier 2 - Sciences et Techniques (UM2)-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), and 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)

Subjects
High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluons splitting into $c \bar{c}$ pairs in hadronic $Z$ decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is $g_{c \bar{c}}=(3.26 \pm 0.23 \rm{(stat)} \pm 0.42 \rm{(syst)}) %$ The rate of gluon splitting into c c ̄ pairs in hadronic Z decays is measured using the data sample collected by ALEPH from 1991 to 1995. The selection is based on the identification of leptons (electrons and muons) originating from semileptonic charm decays, and on the topological properties of signal events. The result derived from the selected sample is g c c ̄ =(3.26±0.23( stat )±0.42( syst )) %.

Published
2003

50. Measurement of the inclusive D^{*{\pm}}$ production in $\gamma\gamma$ collisions at LEP

Author

Heister, A., Schael, S., Barate, R., Bruneliere, R., de Bonis, I., Decamp, D., Goy, C., Jezequel, S., Lees, J P., Martin, F., Merle, E., Minard, M N., Pietrzyk, B., Trocme, B., Bravo, S., Casado, M P., Chmeissani, M., Crespo, J M., Fernandez, E., Fernandez-Bosman, M., Garrido, L., Martinez, M., Pacheco, A., Ruiz, H., Colaleo, A., Creanza, D., de Filippis, N., de Palma, M., Iaselli, G., Maggi, G., Maggi, M., Nuzzo, S., Ranieri, A., Raso, G., Ruggieri, F., Selvaggi, G., Silvestris, L., Tempesta, P., Tricomi, A., Zito, G., Huang, X., Lin, Jiali, Ouyang, Q., Wang, T., Xie, Y., Xu, R., Xue, S., Zhang, J., Zhang, L., Zhao, W., Abbaneo, D., Barklow, T., Buchmuller, O., Cattaneo, M., Cerutti, F., Clerbaux, B., Drevermann, H., Forty, R W., Frank, M., Gianotti, F., Hansen, J B., Harvey, J., Hutchcroft, D E., Janot, P., Jost, B., Kado, M., Mato, P., Moutoussi, A., Ranjard, F., Rolandi, L., Schlatter, D., Sguazzoni, G., Tejessy, W., Teubert, F., Valassi, A., Videau, I., Badaud, F., Dessagne, S., Falvard, Alain, Fayolle, D., Gay, Pascal, Jousset, J., Michel, B., Monteil, S., Pallin, D., Pascolo, J M., Perret, Pascal, Hansen, J D., Hansen, J R., Hansen, P H., Kraan, A., Nilsson, B S., Kyriakis, A., Markou, C., Simopoulou, E., Vayaki, A., Zachariadou, K., Blondel, A., Brient, J C., Machefert, F., Rouge, A., Swynghedauw, M., Tanaka, R., Videau, H., Ciulli, V., Focardi, E., Parrini, G., Antonelli, A., Antonelli, M., Bencivenni, G., Bossi, F., Capon, G., Chiarella, V., Laurelli, P., Mannocchi, G., Murtas, G P., Passalacqua, L., Kennedy, J., Lynch, J G., Negus, P., O'Shea, V., Thompson, a S., Wasserbaech, S., Cavanaugh, R., Dhamotharan, S., Geweniger, C., Hanke, P., Hepp, V., Kluge, E E., Leibenguth, G., Putzer, A., Stenzel, H., Tittel, K., Wunsch, M., Beuselinck, R., Cameron, W., Davies, G., Dornan, P J., Girone, M., Hill, R D., Marinelli, N., Nowell, J., Rutherford, S A., Sedgbeer, J K., Thompson, J C., White, R., Ghete, V M., Girtler, P., Kneringer, E., Kuhn, D., Rudolph, G., Bouhova-Thacker, E., Bowdery, C K., Clarke, D P., Ellis, G., Finch, a J., Foster, F., Hughes, G., Jones, R W L., Pearson, M R., Robertson, N A., Smizanska, M., van Der Aa, O., Delaere, C., Lemaitre, V., Blumenschein, U., Holldorfer, F., Jakobs, K., Kayser, F., Kleinknecht, K., Muller, a S., Renk, B., Sander, H G., Schmeling, S., Wachsmuth, H., Zeitnitz, C., Ziegler, T., Bonissent, A., Coyle, P., Curtil, C., Ealet, A., Fouchez, D., Payre, P., Tilquin, A., Ragusa, F., David, A., Dietl, H., Ganis, G., Huttmann, K., Lutjens, G., Manner, W., Moser, H G., Settles, R., Villegas, M., Wolf, G., Boucrot, J., Callot, O., Davier, M., Duflot, L., Grivaz, J F., Heusse, P., Jacholkowska, A., Serin, L., Veillet, J J., Azzurri, P., Bagliesi, G., Boccali, T., Foa, L., Giammanco, A., Giassi, A., Ligabue, F., Messineo, A., Palla, F., Sanguinetti, G., Sciaba, A., Spagnolo, P., Tenchini, R., Venturi, A., Verdini, P G., Awunor, O., Blair, G A., Cowan, G., Garcia-Bellido, A., Green, M G., Jones, L T., Medcalf, T., Misiejuk, A., Strong, J A., Teixeira-Dias, P., Clifft, R W., Edgecock, T R., Norton, P R., Tomalin, I R., Ward, J J., Bloch-Devaux, B., Boumediene, D., Colas, P., Fabbro, B., Lancon, E., Lemaire, M C., Locci, E., Perez, P., Rander, J., Tuchming, B., Vallage, B., Konstantinidis, N., Litke, a M., Taylor, G., Booth, C N., Cartwright, S., Combley, F., Hodgson, P N., Lehto, M H., Thompson, L F., Bohrer, A., Brandt, S., Grupen, C., Hess, J., Ngac, A., Prange, G., Borean, C., Giannini, G., He, H., Putz, J., Rothberg, J E., Armstrong, S R., Berkelman, K., Cranmer, K., Ferguson, D P S., Gao, Y., Gonzalez, S., Hayes, O J., Hu, H., Jin, S., Kile, J., Mcnamara, P A., Nielsen, J., Pan, y B., von Wimmersperg-Toller, J H., Wiedenmann, W., Wu, J., Wu, S L., Wu, X., Zobernig, G., Dissertori, 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), and 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)

Subjects
High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment
Abstract

The inclusive production of D$^{*\pm}$ mesons in two-photon collisions is measured with the ALEPH detector at $\epem$ centre-of-mass energies from 183$\unit{GeV}$ to 209$\unit{GeV}$. A total of $360 \pm 27$ D$^{*\pm}$ meson events were observed from an integrated luminosity of $699\unit{pb^{-1}}$. Contributions from direct and single-resolved processes are separated using the ratio of the transverse momentum $p_{\rmt}^{\rm D^{*\pm}}$ of the D$^{*\pm}$ to the visible invariant mass $W_{\mathrm{vis}}$ of the event. Differential cross sections of D$^{*\pm}$ production as functions of $p_{\rm t}^{\rm D^{*\pm}}$ and the pseudorapidity $|\eta^{\rm D^{*\pm}}| $ are measured in the range $ 2\unit{GeV}/c p_{\rm t}^{\rm D^{*\pm}} 12\unit{GeV}/c $ and $ |\eta^{\rm D^{*\pm}}| 1.5 $. They are compared to next-to-leading order (NLO)perturbative QCD calculations. The extrapolation of the integrated visible D$^{*\pm}$ cross section to the total charm cross section, based on the Pythia Monte Carlo program, yields $ \sigma ( \epem \rightarrow \epem \ccbar ) _ { \sqrt{s} =197\unit{GeV} } = 731 \pm 74_{\mathrm{stat}} \pm 47_{\mathrm{syst}} \pm 157_{\mathrm{extr}} \unit{pb} $.

Published
2003

Catalog

Books, media, physical & digital resources
See catalog results