skip to main content
US FlagAn official website of the United States government
dot gov icon
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
https lock icon
Secure .gov websites use HTTPS
A lock ( lock ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.


Title: Rotational and hyperfine analysis of the D2Π1/2-X2Δ3/2 (0,0) band of TaO
Award ID(s):
2100542
PAR ID:
10435669
Author(s) / Creator(s):
;
Date Published:
Journal Name:
Journal of Molecular Spectroscopy
Volume:
387
Issue:
C
ISSN:
0022-2852
Page Range / eLocation ID:
111666
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
More Like this
  1. We report the first evidence for the h b ( 2 P ) ϒ ( 1 S ) η transition with a significance of 3.5 standard deviations. The decay branching fraction is measured to be B [ h b ( 2 P ) ϒ ( 1 S ) η ] = ( 7.1 3.2 + 3.7 ± 0.8 ) × 10 3 , which is noticeably smaller than expected. We also set upper limits on π 0 transitions of B [ h b ( 2 P ) ϒ ( 1 S ) π 0 ] < 1.8 × 10 3 , and B [ h b ( 1 P ) ϒ ( 1 S ) π 0 ] < 1.8 × 10 3 , at the 90% confidence level. These results are obtained with a 131.4 fb 1 data sample collected near the ϒ ( 5 S ) resonance with the Belle detector at the KEKB asymmetric-energy e + e collider. Published by the American Physical Society2024 
    more » « less
  2. The first observation of the decay Ξ b ψ ( 2 S ) Ξ and measurement of the branching ratio of Ξ b ψ ( 2 S ) Ξ to Ξ b J / ψ Ξ are presented. The J / ψ and ψ ( 2 S ) mesons are reconstructed using their dimuon decay modes. The results are based on proton-proton colliding beam data from the LHC collected by the CMS experiment at s = 13 TeV in 2016–2018, corresponding to an integrated luminosity of 140 fb 1 . The branching fraction ratio is measured to be B ( Ξ b ψ ( 2 S ) Ξ ) / B ( Ξ b J / ψ Ξ ) = 0.8 4 0.19 + 0.21 ( stat ) ± 0.10 ( syst ) ± 0.02 ( B ) , where the last uncertainty comes from the uncertainties in the branching fractions of the charmonium states. New measurements of the Ξ b ( 5945 ) 0 baryon mass and natural width are also presented, using the Ξ b π + final state, where the Ξ b baryon is reconstructed through the decays J / ψ Ξ , ψ ( 2 S ) Ξ , J / ψ Λ K , and J / ψ Σ 0 K . Finally, the fraction of Ξ b baryons produced from Ξ b ( 5945 ) 0 decays is determined. © 2024 CERN, for the CMS Collaboration2024CERN 
    more » « less