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Título: | Measurement of Z gamma production in p(p)over-bar collisions at root s=1.96 TeV |
Autor: | CDF Collaboration; Cabrera, Susana CSIC ORCID; Cuenca Almenar, Cristóbal CSIC; Álvarez González, B.; Casal, Bruno CSIC; Cuevas, Javier CSIC ORCID; Gómez, Gervasio CSIC ORCID ; Rodrigo, Teresa CSIC ORCID ; Ruiz Jimeno, Alberto CSIC ORCID ; Scodellaro, Luca CSIC ORCID ; Vila, Iván CSIC ORCID; Vilar Cortabitarte, R. CSIC ORCID; Aaltonen, T. | Fecha de publicación: | 25-ago-2010 | Editor: | American Physical Society | Citación: | Physical Review - Section D - Particles and Fields 82 (3): 031103 (2010) | Resumen: | The production rate and kinematics of photons produced in association with Z bosons are studied using 2 fb(-1) of p (p) over bar collision data collected at the Collider Detector at Fermilab. The cross section for p (p) over bar -> l(+)l(-)gamma + X ( where the leptons l are either muons or electrons with dilepton mass M-ll > 40 GeV/c(2), and where the photon has transverse energy E-T(gamma) > 7 GeV and is well separated from the leptons) is 4.6 +/- 0.2(stat) +/- 0.3 (syst) +/- 0.3 (lum) pb, which is consistent with standard model expectations. We use the photon E-T distribution from Z gamma events where the Z has decayed to mu(+) mu(-) ,e(+) e(-), or nu(+) nu(-) to set limits on anomalous (non standard model) trilinear couplings between photons and Z bosons. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevD.82.031103 | URI: | http://hdl.handle.net/10261/27890 | DOI: | 10.1103/PhysRevD.82.031103 | ISSN: | 1550-7998 |
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CDF-gamma.pdf | 1,08 MB | Adobe PDF | Visualizar/Abrir |
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