A Study of Radiative Bottomonium Transitions using Converted Photons

Journal Article · Mon Aug 15 00:00:00 EDT 2011 · Phys.Rev.D84:072002,2011

DOI:https://doi.org/10.1103/PhysRevD.84.072002· OSTI ID:1022546

Lees, J P; Poireau, V; Prencipe, E; Tisserand, V; Garra Tico, J; Grauges, E; Martinelli, M; Milanes, D A; Palano, A; Pappagallo, M; Eigen, G; Stugu, B; Sun, L; Brown, D N; Kerth, L T; Kolomensky, Yu G; Lynch, G; Koch, H; Schroeder, T; Asgeirsson, D J ; Hearty, C

The authors use (111 {+-} 1) million {Upsilon}(3S) and (89 {+-} 1) million {Upsilon}(2S) events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions betwen bottomonium states using photons that have been converted to e{sup +}e{sup -} pairs by the detector material. They observe {Upsilon}(3S) {yields} {gamma}{chi}{sub b0,2}(1P) decay, make precise measurements of the branching fractions for {chi}{sub b1,2}(1P, 2P) {yields} {gamma}{Upsilon}(1S) and {chi}{sub b1,2}(2P) {yields} {gamma}{Upsilon}(2S) decays, and search for radiative decay to the {eta}{sub b}(1S) and {eta}{sub b}(2S) states.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1022546
• Report Number(s): SLAC-PUB-14446; arXiv:1104.5254; TRN: US1104270
• Journal Information: Phys.Rev.D84:072002,2011, Journal Name: Phys.Rev.D84:072002,2011
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BOTTOMONIUM
DECAY
PHOTONS
RADIATIVE DECAY
STANFORD LINEAR ACCELERATOR CENTER
Experiment-HEP
HEPEX