Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb−1 of pp¯ collisions at s=1.96 TeV

Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb−1 of pp¯ collisions at s=1.96 TeV

We report the results of a search for a heavy neutral gauge boson Z′ decaying into the dielectron final state using data corresponding to an integrated luminosity of 5.4 fb−1 collected by the D0 experiment at the Fermilab Tevatron Collider. No significant excess above the standard model prediction i...

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Veröffentlicht in:Physics letters. B 2011-01, Vol.695 (1-4), p.88-94
Hauptverfasser: Adams, M., Alexeev, G.D., Alton, A., Ancu, L.S., Aoki, M., Arov, M., Atramentov, O., Banerjee, S., Begalli, M., Bhatnagar, V., Blazey, G., Bolton, T.A., Bose, T., Bross, A., Buescher, V., Bunichev, V., Burnett, T.H., Calvet, S., Chan, K.M., Cho, D.K., Choi, S., Couderc, F., De, K., Denisov, D., DeVaughan, K., Dudko, L.V., Duperrin, A., Ellison, J., Evdokimov, A., Fortner, M., Golovanov, G., Goussiou, A., Grannis, P.D., Greenwood, Z.D., Gregores, E.M., Grenier, G., Grivaz, J.-F., Gutierrez, G., Gutierrez, P., Haas, A., Harder, K., Hegab, H., Hensel, C., La Cruz, I. Heredia-De, Hesketh, G., Hossain, S., Jabeen, S., Jain, S., Jamin, D., Johnson, M., Kajfasz, E., Karmanov, D., Khanov, A., Kharchilava, A., Khatidze, D., Kohli, J.M., Kurča, T., Lee, W.M., Lincoln, D., Lipton, R., Love, P., Maravin, Y., Meyer, A., Mondal, N.K., Onoprienko, D., Orduna, J., Parua, N., Penning, B., Petrillo, G., Podstavkov, V.M., Pol, M.-E., Quinn, B., Rizatdinova, F., Rubinov, P., Schellman, H., Schliephake, T., Shchukin, A.A., Simak, V., Skubic, P., Snyder, S., Sosebee, M., Spurlock, B., Stolin, V., Stutte, L., Svoisky, P., Takahashi, M., Tully, C., Uvarov, S., Van Kooten, R., van Leeuwen, W.M., Varnes, E.W., Vasilyev, I.A., Verdier, P., Vertogradov, L.S., Weber, M., Wetstein, M., Wimpenny, S.J., Wyatt, T.R., Yasuda, T., Yu, J.
Format: Artikel
Sprache:eng
Schlagworte:
Exact sciences and technology
Extensions of standard model
New gauge bosons
Nuclear physics
Physics
The physics of elementary particles and fields
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Beschreibung
Zusammenfassung:We report the results of a search for a heavy neutral gauge boson Z′ decaying into the dielectron final state using data corresponding to an integrated luminosity of 5.4 fb−1 collected by the D0 experiment at the Fermilab Tevatron Collider. No significant excess above the standard model prediction is observed in the dielectron invariant-mass spectrum. We set 95σ(pp¯→Z′)×BR(Z′→ee) depending on the dielectron invariant mass. These cross section limits are used to determine lower mass limits for Z′ bosons in a variety of models. For the sequential standard model Z′ boson a lower mass limit of 1023 GeV is obtained.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2010.10.059