Observation of ηb(2S) in Υ(2S) → γηb(2S), ηb(2S) → hadrons, and confirmation of ηb(1S) at CLEO

Sean A Dobbs, Z. Metreveli, Amiran Tomaradze, T. Xiao, Kamal K Seth

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The data for 9.3 million Υ(2S) and 20.9 million Υ(1S) taken with the CLEO III detector have been used to study the radiative population of ηb(2S, 1S) states identified by their decay into twenty six different exclusive hadronic final states. In the Υ(2S) decays an enhancement is observed at a ∼ 5σ level, which is attributed to ηb(2S) and corresponds to the Υ(2S) hyperfine splitting of 48.7±2.3(stat)±2.1(syst) MeV. In the Υ(1S) decays, the identification of ηb(1S) is confirmed at a ∼ 3σ level with M(ηb(1S)) in agreement with its known value.

Original languageEnglish (US)
Title of host publication11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012
Pages407-409
Number of pages3
DOIs
StatePublished - Dec 16 2013
Event11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012 - St. Petersburg, FL, United States
Duration: May 29 2012Jun 3 2012

Publication series

NameAIP Conference Proceedings
Volume1560
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other11th Conference on the Intersections of Particle and Nuclear Physics, CIPANP 2012
CountryUnited States
CitySt. Petersburg, FL
Period5/29/126/3/12

Keywords

  • Bottomonium spectroscopy

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science
  • Physics and Astronomy(all)
  • Nature and Landscape Conservation

Fingerprint Dive into the research topics of 'Observation of η<sub>b</sub>(2S) in Υ(2S) → γη<sub>b</sub>(2S), η<sub>b</sub>(2S) → hadrons, and confirmation of η<sub>b</sub>(1S) at CLEO'. Together they form a unique fingerprint.

Cite this