1998
article
Z{gamma} production in p{bar p} collisions at {radical} (s) =1.8TeV and limits on anomalous ZZ{gamma} and Z{gamma}{gamma} couplings
B. Gómez, B. Hoeneisen, P. Mooney, J. P. Negret, K. Davis, D. Fein, G. E. Forden, J.A. Guida, E. James, K. A. Johns, Freedy Nang, A. Narayanan, J. P. Rutherfoord, J. M. Butler, M. K. Fatyga, B. G. Gibbard, H. A. Gordon, N. Graf, S. J. Kahn, Jonathan Kotcher, S. Protopopescu, S. Rajagopalan, Jeffrey W. Bantly, D. Cullen-Vidal, D. Cutts, J.M. Guida, J. S. Hoftun, R. Partridge, S. Grinstein, R. Piegaia, P. C. Bloom, Y. Fisyak, S. Glenn, G. Grim, C. Klopfenstein, R. L. Lander, S. Mani, T. Fahland, R.E. Hall, C. Boswell, B. C. Choudhary, J. Cochran, J. Ellison, P. Gartung, K. Gounder, A. P. Heinson, T. Huehn, Gilvan Augusto Alves, W. Carvalho, A. K. A. Maciel, Hélio da Motta, A. Santoro, H. Castilla-Valdez, J. L. González Solís, R. Hernández-Montoya, L. Magaña-Mendoza, A. Sánchez-Hernández, Ilke Adam, A. V. Kotwal, M. Bhattacharjee, S.H. Ahn, B.Yu. Baldin, J. F. Bartlett, P. C. Bhat, A. Boehnlein, F.O. Borcherding, Andrew Gerhart Brandt, A. Bross, J. H. Christenson, W. E. Cooper, M. Demarteau, D. Yu. Denisov, H. Thomas Diehl, M. Diesburg, Sandor Feher, H. Eugene Fisk, E. Flattum, S. Fuess, K. Genser, C. E. Gerber, D.R. Green, H. Greenlee, N. Grossman, Herman Haggerty, S. Hansen, U. Heintz, J. Hobbs, A.S. Ito
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Le résumé fourni par la source
We present a study of Z{gamma}+X production in p{bar p} collisions at {radical} (s) =1.8TeV from 97 (87)pb{sup {minus}1} of data collected in the ee{gamma} ({mu}{mu}{gamma}) decay channel with the D0 detector at Fermilab. The event yield and kinematic characteristics are consistent with the standard model predictions. We obtain limits on anomalous ZZ{gamma} and Z{gamma}{gamma} couplings for form factor scales {Lambda}=500GeV and {Lambda}=750GeV. Combining this analysis with our previous results yields 95{percent} C.L. limits {vert_bar}h{sub 30}{sup Z}{vert_bar}{lt}0.36, {vert_bar}h{sub 40}{sup Z}{vert_bar}{lt}0.05, {vert_bar}h{sub 30}{sup {gamma}}{vert_bar}{lt}0.37, and {vert_bar}h{sub 40}{sup {gamma}}{vert_bar}{lt}0.05 for a form factor scale {Lambda}=750GeV. {copyright} {ital 1998} {ital The American Physical Society}
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Les sujets associés
Nuclear physics research studiesHigh-Energy Particle Collisions ResearchParticle physics theoretical and experimental studies