An improved determination of the ratio of W and Z masses at the CERN [formula omitted]p collider

• Published in: Physics letters. B 1992-02, Vol.276 (3), p.354-364
• Main Authors: Alitti, J., Ambrosini, G., Ansari, R., Autiero, D., Bareyre, P., Bertram, I.A., Blaylock, G., Bonamy, P., Borer, K., Bourliaud, M., Buskulic, D., Carboni, G., Cavasinni, V., Cenci, P., Chollet, J.C., Conta, C., Costa, G., Costantini, F., Cozzi, L., Curatolo, M., Dell'Acqua, A., DelPrete, T., DiLella, L., Ducros, Y., Egan, G.F., Einsweiler, K.F., Esposito, B., Fayard, L., Federspiel, A., Froidevaux, D., Fumagalli, G., Gianotti, F., Gildermeister, O., Gössling, C., Grünendahl, S., Hara, K., Hellman, S., Hřivnáč, J., Hugentobler, E., Hultqvist, K., Iacopini, E., Incandela, J., Jakobs, K., Jenni, P., Kluge, E.E., Lami, S., Lariccia, P., Lefebvre, M., Linssen, L., Livan, M., Lubrano, P., Magneville, C., Mandelli, L., Mapelli, L., Mazzanti, M., Meier, K., Merkel, B., Meyer, J.P., Moniez, M., Moning, R., Morganti, M., Müller, L., Munday, D.J., Nessi, M., Nessi-Tedaldi, F., Onions, C., Parker, M.A., Parrour, G., Pastore, F., Pennacchio, E., Pepe, M., Perini, L., Petridou, C., Petroff, P., Poppleton, A., Primavera, M., Punturo, M., Repellin, J.P., Rimoldi, A., Sacchi, M., Schmidt, B., Šimák, V., Singh, S.L., Sondermann, V., Spiwoks, R., Stapnes, S., Talamonti, C., Tondini, F., Tovey, S.N., Tsesmelis, E., Unal, G., Valdata-Nappi, M., Vercesi, V., Weidberg, A.R., Wells, P.S., White, T.O., Wood, D.R., Wotton, S.A., Zaccone, H., Zylberstejn, A.
• Format: Article
• Language: English
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(92)90332-X

The W and Z bosons masses, m w and m z , are measured using saing samples of W→ev and Z→e +e − decays observed in p p collisions at √ s=630 GeV. The ration is found to be m w m z =0.8813±0.0036 ± 0.0019 . This gives a value sin 2 θ w = 0.2234 ± 0.0064 ± 0.0033, and in combination with precise m z measurements from LEP yields m w =80.35±0.33±0.17 GeV. This result is in good agreement with other experiments, and with the standard model for a top quark mass lighter than 250 GeV.