#### Title

Measurement of the mass splittings between the [Formula Presented] states

#### Document Type

Article

#### Publication Date

1-1-1999

#### Abstract

We present new measurements of photon energies and branching fractions for the radiative transitions [Formula Presented] The masses of the [Formula Presented] states are determined from the measured radiative photon energies. The ratio of mass splittings between the [Formula Presented] substates, [Formula Presented] with [Formula Presented] the [Formula Presented] mass, provides information on the nature of the [Formula Presented] confining potential. We find [Formula Presented] This value is somewhat lower than the previous world average, but more consistent with the theoretical expectation that [Formula Presented] i.e., that this mass splitting ratio is smaller for the [Formula Presented] states than for the [Formula Presented] states. © 1999 The American Physical Society.

#### Publication Name

Physical Review D - Particles, Fields, Gravitation and Cosmology

#### Volume Number

59

#### Issue Number

3

#### DOI

10.1103/PhysRevD.59.032003

#### Recommended Citation

Edwards, K. W.; Bellerive, A.; Janicek, R.; MacFarlane, D. B.; Patel, P. M.; Sadoff, A. J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Darling, C.; Davis, R.; Kotov, S.; Kravchenko, I.; Kwak, N.; Zhou, L.; Anderson, S.; Kubota, Y.; Lee, S. J.; O’Neill, J. J.; Poling, R.; Riehle, T.; Smith, A.; Alam, M. S.; Athar, S. B.; Ling, Z.; Mahmood, A. H.; Timm, S.; Wappler, F.; Anastassov, A.; Duboscq, J. E.; and Fujino, D., "Measurement of the mass splittings between the [Formula Presented] states" (1999). *Faculty Articles Indexed in Scopus*. 2378.

https://digitalcommons.ithaca.edu/scopus_articles/2378