We present a search for the rare radiative decay W±→π±γ 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 Γ(W±→π±γ)/Γ(W±→e±ν) at 6.4×10-5, a factor of 10 improvement over the previous limit.

T. AALTONEN, B. ÁLVAREZ GONZÁLEZ, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2012). Search for the rare radiative decay W→πγ in pp̅ collisions at √s=1.96  TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85, 032001-1-032001-7 [10.1103/PhysRevD.85.032001].

Search for the rare radiative decay W→πγ in pp̅ collisions at √s=1.96  TeV

BRIGLIADORI, LUCA;CASTRO, ANDREA;DENINNO, MARIA MADDALENA;MAZZANTI, PAOLO;MOGGI, NICCOLO';MUSSINI, MANUEL;RIMONDI, FRANCO;ZUCCHELLI, STEFANO
2012

Abstract

We present a search for the rare radiative decay W±→π±γ 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 Γ(W±→π±γ)/Γ(W±→e±ν) at 6.4×10-5, a factor of 10 improvement over the previous limit.
2012
T. AALTONEN, B. ÁLVAREZ GONZÁLEZ, S. AMERIO, D. AMIDEI, A. ANASTASSOV, A. ANNOVI, et al. (2012). Search for the rare radiative decay W→πγ in pp̅ collisions at √s=1.96  TeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85, 032001-1-032001-7 [10.1103/PhysRevD.85.032001].
T. AALTONEN; B. ÁLVAREZ GONZÁLEZ; S. AMERIO; D. AMIDEI; A. ANASTASSOV; A. ANNOVI; J. ANTOS; G. APOLLINARI; J. APPEL; T. ARISAWA; A. ARTIKOV; J. ASAADI...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/122904
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