Properties of l=1 B-1 and B*(2) Mesons
Carregando...
Data
2007-10-26
Título da Revista
ISSN da Revista
Título de Volume
Editor
Amer Physical Soc
Resumo
This Letter presents the first strong evidence for the resolution of the excited B mesons B-1 and B-2(*) as two separate states in fully reconstructed decays to B+(*())pi(-). The mass of B-1 is measured to be 5720.6 +/- 2.4 +/- 1.4 MeV/c(2) and the mass difference Delta M between B-2* and B-1 is 26.2 +/- 3.1 +/- 0: 9 MeV/c(2), giving the mass of the B-2* as 5746.8 +/- 2.4 +/- 1.7 MeV/c(2). The production rate for B-1 and B-2* mesons is determined to be a fraction (13.9 +/- 1.9 +/- 3.2)% of the production rate of the B+ meson.
Descrição
Palavras-chave
Como citar
Physical Review Letters. College Pk: Amer Physical Soc, v. 99, n. 17, 7 p., 2007.