Ara
Toplam kayıt 2, listelenen: 1-2
Study of the Dalitz decay J/psi -> e(+)e(-)eta
(Amer Physic Soc., 2019)
We study the electromagnetic Dalitz decay J/psi -> e(+)e(-)eta and search for dielectron decays of a dark gauge boson (gamma') in J/psi -> gamma'eta with the two q decay modes eta -> gamma gamma and eta -> pi(+)pi(-)pi(0) ...
Measurement of B(J/psi -> eta ' e(+)e(-)) and search for a dark photon
(Amer Physical Soc., 2019)
Using a data sample of (1310.6 +/- 7.0) x 10(6) J/psi decay events collected with the BESIII detector at BEPCII, we study the electromagnetic Dalitz decay J/psi -> eta ' e(+)e(-) with two dominant eta' decay modes, eta' ...