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Open Access item 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
Citation:Physical Review D 85(3): 032001 (2012)
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.
URI:http://hdl.handle.net/10261/52114
Identifiers:doi: 10.1103/PhysRevD.85.032001
issn: 1550-7998
e-issn: 1550-2368
Appears in Collections:(IFCA) Artículos

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