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. RI Robson, Aidan/G-1087-2011; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; manca, giulia/I-9264-2012
Search for the rare radiative decay W -> pi gamma in p(p)over-bar collisions at root s=1.96 TeV
Di Ruzza B;
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. RI Robson, Aidan/G-1087-2011; St.Denis, Richard/C-8997-2012; Prokoshin, Fedor/E-2795-2012; manca, giulia/I-9264-2012File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
