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  • Measurement of W polarisati...
    Aguilar-Benitez, M.; Alcaraz, J.; Aloisio, A.; Alviggi, M.G.; Arefiev, A.; Bagnaia, P.; Bajo, A.; Banerjee, Sw; Bellucci, L.; Biglietti, M.; Biland, A.; Blaising, J.J.; Böhm, A.; Boldizsar, L.; Branson, J.G.; Capell, M.; Cartacci, A.; Cavallari, F.; Cavallo, N.; Chemarin, M.; Chen, H.S.; Chiefari, G.; Cifarelli, L.; de la Cruz, B.; de Asmundis, R.; Debreczeni, J.; De Salvo, A.; Dionisi, C.; El Hage, A.; Engler, A.; Extermann, P.; Fisk, I.; Freudenreich, K.; Garcia-Abia, P.; van Gulik, R.; Hatzifotiadou, D.; Hervé, A.; Hirschfelder, J.; Hofer, H.; Käfer, D.; Kaur, M.; Kim, J.K.; Kirkby, J.; Lebeau, M.; Lecomte, P.; Le Goff, J.M.; Levtchenko, M.; Li, C.; Linde, F.L.; Lohmann, W.; Longo, E.; Lu, Y.S.; Luminari, L.; Mans, J.; Mele, S.; Merola, L.; Meschini, M.; Milcent, H.; Mirabelli, G.; Palomares, C.; Paolucci, P.; Passaleva, G.; Paus, C.; Pauss, F.; Pistolesi, E.; Prokofiev, D.; Ranieri, R.; Ren, D.; Rescigno, M.; Riemann, S.; Roe, B.P.; Rosenbleck, C.; Rykaczewski, H.; Sakharov, A.; Schegelsky, V.; Servoli, L.; Shevchenko, S.; Shivarov, N.; Shumilov, E.; Souga, C.; Swain, J.D.; Tarjan, P.; Taylor, L.; Teyssier, D.; Tóth, J.; Vasquez, R.; Veszpremi, V.; Vesztergombi, G.; Vetlitsky, I.; Villa, S.; Wadhwa, M.; Weber, M.; Wilkens, H.; Wynhoff, S.; Xu, Z.Z.; Yang, B.Z.; Yang, H.J.; Yeh, S.C.; Zhuang, H.L.; Zöller, M.

    Physics letters. B, 04/2003, Letnik: 557, Številka: 3-4
    Journal Article

    The three different helicity states of W bosons produced in the reaction e+e−→W+W−→ℓνqq̄′ at LEP are studied using leptonic and hadronic W decays. Data at centre-of-mass energies s=183–209 GeV are used to measure the polarisation of W bosons, and its dependence on the W boson production angle. The fraction of longitudinally polarised W bosons is measured to be 0.218±0.027±0.016 where the first uncertainty is statistical and the second systematic, in agreement with the Standard Model expectation.