Search for the rare radiative decay W→πγ in pp̅ collisions at √s=1.96 TeV
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...
Main Authors: | , , , , |
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Other Authors: | , |
Format: | Article |
Language: | English |
Published: |
American Physical Society,
2013-05-03T17:21:30Z.
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Subjects: | |
Online Access: | Get fulltext |
Summary: | 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. United States. Dept. of Energy National Science Foundation (U.S.) Alfred P. Sloan Foundation |
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