PT Journal
AU BABAR Collaboration (Lees, JPea
   Lopez-March, N
   Martinez-Vidal, F
   Oyanguren, A
TI Study of radiative bottomonium transitions using converted photons
SO Physical Review D
JI Phys. Rev. D
PY 2011
BP 072002
EP 17pp
VL 84
IS 7
DI 10.1103/PhysRevD.84.072002
LA English
AB We use (111 +/- 1) million Gamma(3S) and (89 +/- 1) million Gamma(2S) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to e(+)e(-) pairs by the detector material. We observe Gamma(3S) -> gamma chi b(0,2)(1P) decay, make precise measurements of the branching fractions for chi b(1,2)(1P, 2P) -> gamma Gamma(1S) and chi b(1,2)(2P) -> gamma Gamma(2S) decays, and search for radiative decay to the eta(b)(1S) and eta(b)(2S) states.
ER