Measurement of the W-Pair Production Cross Section and W-Decay Branching Fractions in $e^{+}e^{-}$ Interactions at $\sqrt{s}= 189 GeV$

Autor: Acciarri, M., Achard, 26 P., Adriani, 19 O., Aguilar Benitez, 16 M., Alcaraz, 25 J., Alemanni, 25 G., Allaby, 22 J., Aloisio, 17 A., Alviggi, 28 M. G., Ambrosi, 28 G., Anderhub, 19 H., Andreev, 48 V. P., 6, Angelescu, 36 T., Anselmo, 12 F., Arefiev, 9 A., Azemoon, 27 T., Aziz, 3 T., Bagnaia, 10 P., Bajo, 35 A., Baksay, 25 L., Balandras, 43 A., Baldew, 4 S. V., Banerjee, 2 S., Banerjee, 10 S. w., Barczyk, 10 A., Barill`ere, 46 R., Bartalini, 17 P., Basile, 22 M., Battiston, 9 R., Bay, 32 A., Becattini, 22 F., Becker, 16 U., Behner, 14 F., Bellucci, 48 L., Berbeco, 16 R., Berdugo, 3 J., Berges, 25 P., Bertucci, Bruna, Betev, 32 B. L., Bhattacharya, 48 S., Biasini, 10 M., Biland, 32 A., Blaising, 48 J. J., Blyth, 4 S. C., Bobbink, 33 G. J., B¨ohm, 2 A., Boldizsar, 1 L., Borgia, 13 B., Bourilkov, 35 D., Bourquin, 48 M., Braccini, 19 S., Branson, 19 J. G., Brochu, 39 F., Buffini, 4 A., Buijs, 16 A., Burger, 44 J. D., Burger, 14 W. J., Cai, 32 X. D., Capell, 14 M., Cara Romeo, 14 G., Carlino, 9 G., Cartacci, 28 A. M., Casaus, 16 J., Castellini, 25 G., Cavallari, 16 F., Cavallo, 35 N., Cecchi, Claudia, Cerrada, 32 M., Cesaroni, 25 F., Chamizo, 23 M., Chang, 19 Y. H., Chaturvedi, 50 U. K., Chemarin, 18 M., Chen, 24 A., Chen, 50 G., Chen, 7 G. M., Chen, 7 H. F., Chen, 20 H. S., Chiefari, 7 G., Cifarelli, 28 L., Cindolo, 38 F., Civinini, 9 C., Clare, 16 I., Clare, 14 R., Coignet, 14 G., Colino, 4 N., Costantini, 25 S., Cotorobai, 5 F., de la Cruz, 12 B., Csilling, 25 A., Cucciarelli, 13 S., Dai, 32 T. S., van Dalen, 14 J. A., D’Alessandro, 30 R., de Asmundis, 16 R., D´eglon, 28 P., Degr´e, 19 A., Deiters, 4 K., della Volpe, 46 D., Delmeire, 28 E., Denes, 19 P., Denotaristefani, 34 F., De Salvo, 35 A., Diemoz, 48 M., Dierckxsens, 35 M., van Dierendonck, 2 D., Dionisi, 2 C., Dittmar, 35 M., Dominguez, 48 A., Doria, 39 A., Dova, 28 M. T., Duchesneau, ♯ D., Dufournaud, 4 D., Duinker, 4 P., Duran, 2 I., El Mamouni, 40 H., Engler, 24 A., Eppling, 33 F. J., Ern´e, 14 F. C., Extermann, 2 P., Fabre, 19 M., Falagan, 46 M. A., Falciano, 25 S., Favara, 17 A., Fay, 17 J., Fedin, 24 O., Felcini, 36 M., Ferguson, 48 T., Fesefeldt, 33 H., Fiandrini, Emanuele, Field, 32 J. H., Filthaut, 19 F., Fisher, 17 P. H., Fisk, 14 I., Forconi, 39 G., Freudenreich, 14 K., Furetta, 48 C., Galaktionov, 26 Y. u., Ganguli, 14 S. N., Garcia Abia, 10 P., Gataullin, 5 M., Gau, 31 S. S., Gentile, 11 S., Gheordanescu, 17 N., Giagu, 12 S., Gong, 35 Z. F., Grenier, 20 G., Grimm, 24 O., Gruenewald, 48 M. W., Guida, 8 M., van Gulik, 38 R., Gupta, 2 V. K., Gurtu, 34 A., Gutay, 10 L. J., Haas, 45 D., Hasan, 5 A., Hatzifotiadou, 29 D., Hebbeker, 9 T., Herv´e, 8 A., Hidas, 17 P., Hirschfelder, 13 J., Hofer, 33 H., Holzner, 48 G., Hoorani, 48 H., Hou, 33 S. R., 50 Y., Hu, Iashvili, 30 I., Jin, 47 B. N., Jones, 7 L. W., de Jong, 3 P., Josa Mutuberr´ıa, 2 I., Khan, 25 R. A., Kaur, 18 M., Kienzle Focacci, ♦ M. N., Kim, 19 D., Kim, 35 J. K., Kirkby, 42 J., Kiss, 17 D., Kittel, 13 W., Klimentov, 30 A., K¨onig, 27 A. C., Kopp, 30 A., Koutsenko, 47 V., Kr¨aber, 27 M., Kraemer, 48 R. W., Krenz, 33 W., Kr¨uger, 1 A., Kunin, 47 A., Ladron de Guevara, 27 P., Laktineh, 25 I., Landi, 24 G., Lebeau, 16 M., Lebedev, 17 A., Lebrun, 14 P., Lecomte, 24 P., Lecoq, 48 P., Le Coultre, 17 P., Lee, 48 H. J., Le Goff, 8 J. M., Leiste, 17 R., Levtchenko, 47 P., 36 C., Li, Likhoded, 20 S., Lin, 47 C. H., Lin, 50 W. T., Linde, 50 F. L., Lista, 2 L., Liu, 28 Z. A., Lohmann, 7 W., Longo, 47 E., 35 Y. S., Lu, L¨ubelsmeyer, 7 K., Luci, 1 C., Luckey, 35 D., Lugnier, 14 L., Luminari, 24 L., Lustermann, 35 W., 48 W. G., Ma, Maity, 20 M., Malgeri, 10 L., Malinin, 17 A., Ma˜na, 17 C., Mangeol, 25 D., Mans, 30 J., Marian, 34 G., Martin, 15 J. P., Marzano, 24 F., Mazumdar, 35 K., Mcneil, 10 R. R., Mele, 6 S., Merola, 17 L., Meschini, 28 M., Metzger, 16 W. J., von der Mey, 30 M., Mihul, 1 A., Milcent, 12 H., Mirabelli, 17 G., Mnich, 35 J., Mohanty, 17 G. B., Moulik, 10 T., Muanza, 10 G. S., Muijs, 24 A. J. M., Musicar, 2 B., Musy, 39 M., Napolitano, 35 M., Natale, 28 S., Nessi Tedaldi, 35 F., Newman, 48 H., Niessen, 31 T., Nisati, 1 A., Nowak, 35 H., Ofierzynski, 47 R., Organtini, 48 G., Oulianov, 35 A., Palomares, 27 C., Pandoulas, 25 D., Paoletti, 1 S., Paolucci, 17 P., Paramatti, 28 R., Park, 35 H. K., Park, 33 I. H., Passaleva, 42 G., Patricelli, 17 S., Paul, 28 T., Pauluzzi, Michele, Paus, 32 C., Pauss, 17 F., Pedace, 48 M., Pensotti, 35 S., Perret Gallix, 26 D., Petersen, 4 B., Piccolo, 30 D., Pierella, 28 F., Pieri, 9 M., Pirou´e, 16 P. A., Pistolesi, 34 E., Plyaskin, 26 V., Pohl, 27 M., Pojidaev, 19 V., Postema, 16 H., Pothier, 14 J., Prokofiev, 17 D. O., Prokofiev, 45 D., Quartieri, 36 J., Rahal Callot, 38 G., Rahaman, 17 M. A., Raics, 10 P., Raja, 15 N., Ramelli, 10 R., Rancoita, 48 P. G., Ranieri, 26 R., Raspereza, 16 A., Raven, 47 G., Razis, 39 P., Ren, 2. 9. D., Rescigno, 48 M., Reucroft, 35 S., Riemann, 11 S., Riles, 47 K., Rodin, 3 J., Roe, 43 B. P., Romero, 3 L., Rosca, 25 A., Rosier Lees, 8 S., Rubio, 4 J. A., Ruggiero, 17 G., Rykaczewski, 16 H., Saremi, 48 S., Sarkar, 6 S., Salicio, 35 J., Sanchez, 17 E., Sanders, 17 M. P., Sarakinos, 30 M. E., Sch¨afer, 21 C., Schegelsky, 17 V., Schmidt Kaerst, 36 S., Schmitz, 1 D., Schopper, 1 H., Schotanus, 49 D. J., Schwering, 30 G., Sciacca, 1 C., Seganti, 28 A., Servoli, 9 L., Shevchenko, 32 S., Shivarov, 31 N., Shoutko, 41 V., Shumilov, 27 E., Shvorob, 27 A., Siedenburg, 31 T., Son, 1 D., Smith, 42 B., Spillantini, 33 P., Steuer, 16 M., Stickland, 14 D. P., Stone, 34 A., Stoyanov, 6 B., Straessner, 41 A., Sudhakar, 1 K., Sultanov, 10 G., Sun, 18 L. Z., Suter, 20 H., Swain, 48 J. D., Szillasi, 18 Z., Sztaricskai, ¶ T., Tang, ¶ X. W., Tauscher, 7 L., Taylor, 5 L., Tellili, 11 B., Timmermans, 24 C., Ting, 30 Samuel C. C., Ting, 14 S. M., Tonwar, 14 S. C., T´oth, 10 J., Tully, 13 C., Tung, 17 K. L., Uchida, 7. Y., Ulbricht, 14 J., Valente, 48 E., Vesztergombi, 35 G., Vetlitsky, 13 I., Vicinanza, 27 D., Viertel, 38 G., Villa, 48 S., Violini, 11 P., Vivargent, 35 M., Vlachos, 4 S., Vodopianov, 5 I., Vogel, 36 H., Vogt, 33 H., Vorobiev, 47 I., Vorobyov, 27 A. A., Vorvolakos, 36 A., Wadhwa, 29 M., Wallraff, 5 W., Wang, 1 M., Wang, 14 X. L., Wang, 20 Z. M., Weber, 20 A., Weber, 1 M., Wienemann, 1 P., Wilkens, 1 H., 30 S. X., Wu, Wynhoff, 14 S., Xia, 17 L., 31 Z. Z., Xu, Yamamoto, 20 J., Yang, 3 B. Z., Yang, 20 C. G., Yang, 7 H. J., Yang, 7 M., 7 J. B., Ye, Yeh, 20 S. C., A. n. Z., 51
Přispěvatelé: 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), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), CMS, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), L3
Jazyk: angličtina
Rok vydání: 2000
Předmět:
Zdroj: Physics Letters B
Physics Letters B, Elsevier, 2000, 496, pp.19-33
ISSN: 0370-2693
Popis: The data collected by the L3 experiment at LEP at a centre-of-mass energy of $188.6~\rm{Ge\kern -0.1em V}$ are used to measure the W-pair production cross section and the W-boson decay branching fractions. These data correspond to an integrated luminosity of 176.8~pb$^{-1}$. The total cross section for W-pair production, combining all final states, is measured to be $\sigma_{\rm{WW}}= 16.24 \pm 0.37~(stat.) \pm 0.22~(syst.)$~pb. Including our data collected at lower centre-of-mass energies, the hadronic branching fraction of the W-boson is determined to be $ B(\rm{W} \rightarrow \rm{qq})= \left[ 68.20 \pm 0.68~(stat.) \pm 0.33~(syst.)\right]~\%$. The results agree with the Standard Model predictions. The data collected by the L3 experiment at LEP at a centre-of-mass energy of 188.6 GeV are used to measure the W-pair production cross section and the W-boson decay branching fractions. These data correspond to an integrated luminosity of 176.8 pb −1 . The total cross section for W-pair production, combining all final states, is measured to be σ WW =16.24±0.37 (stat.)±0.22 (syst.) pb. Including our data collected at lower centre-of-mass energies, the hadronic branching fraction of the W-boson is determined to be B (W→qq)=[68.20±0.68 (stat.)±0.33 (syst.)]%. The results agree with the Standard Model predictions. The data collected by the L3 experiment at LEP at a centre-of-mass energy of 188.6 GeV are used to measure the W-pair production cross section and the W-boson decay branching fractions. These data correspond to an integrated luminosity of 176.8pb^-1. The total cross section for W-pair production, combining all final states, is measured to be sigma_WW = 16.24 +/- 0.37(stat.) +/- 0.22(syst.) pb. Including our data collected at lower centre-of-mass energies, the hadronic branching fraction of the W-boson is determined to be B(W ->qq) = [68.20 +/- 0.68 (stat.) +/- 0.33 (syst.) ] %. The results agree with the Standard Model predictions.
Databáze: OpenAIRE