Measurements of the mass and width of the eta_c using psi' -> gamma eta_c

Details Measurements of the mass and width of the eta_c using psi' -> gamma eta_c Measurements of the mass and width of the eta_c using psi' -> gamma eta_c

2011-11-02

arxiv.org/abs/1111.0398v1

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 1 figure

Scientific paper

The mass and width of the lowest lying S-wave spin singlet charmonium state, the eta_c, are measured using a data sample of 1.06x10^8 psi' decays collected with the BESIII detector at the BEPCII storage ring. We use a model that incorporates interference between the signal reaction, psi' -> gamma eta_c, and a non-resonant radiative background to successfully describe the line shape of the eta_c. We measure the eta_c mass to be 2984.3 +- 0.6 +- 0.6 MeV/c^2 and the total width to be 32.0 +- 1.2 +- 1.0 MeV, where the first errors are statistical and the second are systematic.

Affiliated with

Also associated with

No associations

Rating

Measurements of the mass and width of the eta_c using psi' -> gamma 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 Measurements of the mass and width of the eta_c using psi' -> gamma eta_c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurements of the mass and width of the eta_c using psi' -> gamma eta_c will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-327583