2011/09/30 by V. Ziegler, Ziegler, V.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.1110.0044
arxiv created 2011/09/30 · openalex publication_date 2011/09/30 · arxiv updated 2011/10/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present studies in bottomonium spectroscopy carried out with samples of (98±1) million Υ(2S) and (121±1) million Υ(3S) events recorded with the BaBar detector at the PEP-II asymmetric-energy e+ e- collider at SLAC. Precise measurements of the branching fractions for χb1,2(1P, 2P)→ γΥ(1S) and χb1,2(2P)→ γΥ(2S) transitions, and searches for radiative decay to the ηb(1S) and ηb(2S) states are performed using photons that have converted into an e+ e- pair. In addition, we summarize the results of a search for the spin-singlet partner of the χbJ(1P) triplet, the hb(1P) state of bottomonium, in the transitions Υ(3S)→ π0 hb and Υ(3S)→ π+π- hb.