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Title: Search for the rare radiative decay W→πγ in pp̄ collisions at √s=1.96TeV
Authors: Aaltonen, T., Álvarez González, B., Casal, Bruno, Cuevas, Javier, Gómez, G., Gómez-Ceballos, Guillelmo, Palencia, Enrique, Rodrigo, Teresa, Scodellaro, Luca, Vila, Iván, Vilar, Rocío, Vizán, J., CDF Collaboration
Issue Date: 2012
Publisher: American Physical Society
Abstract: We present a search for the rare radiative decay W ±→ π ±γ using data corresponding to an integrated luminosity of 4.3fb -1 of proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the CDF experiment at Fermilab. As no statistically significant signal is observed, we set a 95%-confidence-level upper limit on the relative branching fraction Γ(W ±→π ±γ)/Γ(W ±→e ±ν) at 6.4×10 -5, a factor of 10 improvement over the previous limit. © 2012 American Physical Society.
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Identifiers: doi: 10.1103/PhysRevD.85.032001
issn: 1550-7998
e-issn: 1550-2368
Citation: Physical Review D 85(3): 032001 (2012)
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