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Limits on anomalous trilinear Gauge couplings in Z? events from pp? collisions at ?s=1.96TeV

Abstract: Using Z? candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Z? couplings vanish at tree level and are heavily suppressed at higher orders; hence any evidence of couplings indicates new physics. Measurements are performed using data corresponding to an integrated luminosity of 4.9fb?1 in the Z? ?¯? decay channel and 5.1??fb?1 in the Z?l? (l=?, e) decay channels. The combination of these measurements provides the most stringent limits to date on Z? trilinear gauge couplings. Using an energy scale of ?=1.5??TeV to allow for a direct comparison with previous measurements, we find limits on the CP-conserving parameters that describe Z? couplings to be |h?,Z3|<0.022 and |h?,Z4|<0.0009. These results are consistent with standard model predictions.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Aaltonen T., Lvarez González B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Apresyan A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bauer G., Bedeschi F., Beecher D., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Binkley M.,

 Fuente: Physical Review Letters, 2011, 107(5), 051802

Editorial: American Physical Society

 Fecha de publicación: 01/07/2011

Nº de páginas: 8

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.107.051802

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.107.051802

Autoría

AALTONEN, T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON