Measurement of chi(cj) decaying into p(n)over-bar pi(-) and p(n)over-bar pi(-)pi(0)
Citation
Ablikim, M., Achasov, M. N., Albayrak, O., Ambrose, D. J., An, F. F., An, Q. ... BESIII Collaboration. (2012). Measurement of chi(cj) decaying into p(n)over-bar pi(-) and p(n)over-bar pi(-)pi(0). Physical Review D, 86 (5), 13p. https://dx.doi.org/10.1103/PhysRevD.86.052011.Abstract
Using a data sample of 1.06 x 10(8) psi' events collected with the BESIII detector in 2009, the branching fractions of chi(cJ) -> p (n) over bar pi(-) and chi(cJ) -> p (n) over bar pi(-)pi(0) (J = 0, 1, 2) are measured. (Throughout the text, inclusion of charge conjugate modes is implied if not stated otherwise.) The results for chi(c0) -> p (n) over bar pi(-) and chi(c2) -> p (n) over bar pi(-) are consistent with, but much more precise than, those of previous measurements. The decays of chi(c1) -> p (n) over bar pi(-) and chi(cJ) -> p (n) over bar pi(-)pi(0) are observed for the first time.
