Search for the rare radiative decay W→πγ in pp̅ collisions at √s=1.96 TeV
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Aaltonen-2012-Search for the Rare Radiative Decay.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Paus, Christoph M. E.
Bauer, Gerry P
Makhoul, Khaldoun
Date Issued
February 2012
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaltonen, T. et al. “Search for the Rare Radiative Decay W→πγ in Pp[over ¯] Collisions at Sqrt[s]=1.96 TeV.” Physical Review D 85.3 (2012): Web. 11 May 2012. © 2012 American Physical Society
Version
Final published version
Abstract
We present a search for the rare radiative decay W[superscript ±]→π[superscript ±]γ using data corresponding to an integrated luminosity of 4.3 fb[superscript -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[superscript ±]→π[superscript ±]γ)/Γ(W[superscript ±]→e[superscript ±]ν) at 6.4×10[superscript -5], a factor of 10 improvement over the previous limit.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.85.032001
