J/psi and psi(2S) Radiative Transitions to eta_c

Details J/psi and psi(2S) Radiative Transitions to eta_c J/psi and psi(2S) Radiative Transitions to eta_c

2008-05-02

arxiv.org/abs/0805.0252v2

Phys.Rev.Lett.102:011801,2009; Erratum-ibid.106:159903,2011

Physics

High Energy Physics

High Energy Physics - Experiment

11 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.102.011801 1

Using 24.5 million psi(2S) decays collected with the CLEO-c detector at CESR we present the most precise measurements of magnetic dipole transitions in the charmonium system. We measure B(psi(2S)->gamma eta_c) = (4.32+/-0.16+/-0.60)x10^-3, B(J/psi->gamma eta_c)/B(psi(2S)->gamma eta_c) = 4.59+/-0.23+/-0.64, and B(J/psi->gamma eta_c) = (1.98+/-0.09+/-0.30)%. We observe a distortion in the eta_c line shape due to the photon-energy dependence of the magnetic dipole transition rate. We find that measurements of the eta_c mass are sensitive to the line shape, suggesting an explanation for the discrepancy between measurements of the eta_c mass in radiative transitions and other production mechanisms.

Affiliated with

Also associated with

No associations

Rating

J/psi and psi(2S) Radiative Transitions to eta_c does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with J/psi and psi(2S) Radiative Transitions to eta_c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and J/psi and psi(2S) Radiative Transitions to eta_c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-341504