Rare decays of the eta-prime
Collaboration
12 pages
Published in:
- Phys.Rev.Lett. 84 (2000) 26-30
e-Print:
- hep-ex/9907046 [hep-ex]
Report number:
- SLAC-REPRINT-1999-101,
- CLNS-99-1625,
- CLEO-99-6
Experiments:
- CESR-CLEO-II
View in:
Citations per year
Abstract:
We have searched for the rare decays of the eta prime meson to e+ e- eta, e+ e- pizero, e+ e- gamma, and e mu in hadronic events at the CLEO II detector. The search is conducted on 4.80 fb^-1 of e+ e- collisions at the Cornell Electron Storage Ring. We find no signal in any of these modes, and set 90% confidence level upper limits on their branching fractions of 2.4 X 10^-3, 1.4 X 10^-3, 0.9 X 10^-3, and 4.7 X 10^-4, respectively. We also investigate the Dalitz plot of the common decay of the eta prime to pi+ pi- eta. We fit the matrix element with the Particle Data Group parameterization and find Re(alpha) = -0.021 +- 0.025, where alpha is a linear function of the kinetic energy of the eta.- electron positron: colliding beams
- electron positron: annihilation
- Upsilon(10570): electroproduction
- B: pair production
- B: hadronic decay
- eta(958): rare decay
- eta(958): branching ratio
- upper limit
- eta(958): hadronic decay
- Dalitz plot
References(8)
Figures(0)