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.

Search for the rare radiative decay W -> pi gamma in p(p)over-bar collisions at root s=1.96 TeV / T., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., J. A., A., A., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 85:(2012), p. 032001. [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

BAUCE, MATTEO;S. D. Cecco;GIAGU, Stefano;IORI, Maurizio;MARGAROLI, Fabrizio;
2012

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
01 Pubblicazione su rivista::01a Articolo in rivista
Search for the rare radiative decay W -> pi gamma in p(p)over-bar collisions at root s=1.96 TeV / T., A., B. A., G., S., A., D., A., A., A., A., A., J., A., G., A., J. A., A., A., A., T., A., A., A., J., A., W., A., B., A., A., A., F., A., W., B., A., B.G., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 85:(2012), p. 032001. [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/11573/472933
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