We present a search for the rare radiative decay W+ -> pi(+)gamma using data corresponding to an integrated luminosity of 4.3 fb(-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 Gamma(W(+/-) -> pi(+/-)gamma)/Gamma(W(+/-) -> e(+/-) nu) at 6.4 x 10(-5), a factor of 10 improvement over the previous limit.

T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2012). Search for the rare radiative decay W -> pi gamma in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(3), 032001-1-032001-7 [10.1103/PhysRevD.85.032001].

Search for the rare radiative decay W -> pi gamma in p(p)over-bar collisions at root s=1.96 TeV

BARRIA, PATRIZIA;GAROSI, PAOLA;RUFFINI, FABRIZIO;SCRIBANO, ANGELO;SQUILLACIOTI, PAOLA;
2012-01-01

Abstract

We present a search for the rare radiative decay W+ -> pi(+)gamma using data corresponding to an integrated luminosity of 4.3 fb(-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 Gamma(W(+/-) -> pi(+/-)gamma)/Gamma(W(+/-) -> e(+/-) nu) at 6.4 x 10(-5), a factor of 10 improvement over the previous limit.
2012
T., A., B., Á.G., S., A., D., A., A., A., A., A., et al. (2012). Search for the rare radiative decay W -> pi gamma in p(p)over-bar collisions at root s=1.96 TeV. PHYSICAL REVIEW. D. PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(3), 032001-1-032001-7 [10.1103/PhysRevD.85.032001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/40012
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