Observation of the D{sub 1}(2420){yields}D{pi}{sup +}{pi}{sup -} Decays

Journal Article · Fri Jun 10 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.94.221805· OSTI ID:20696353

Abe, K; Adachi, I; Gershon, T; Haba, J; Hastings, N C; Hazumi, M; Higuchi, T; Ishikawa, A; Itoh, R; Iwasaki, Y; Katayama, N; Kichimi, H; Koppenburg, P; Nishida, S; Ozaki, H; Sagawa, H; Sakai, Y; Stamen, R; Suzuki, S Y; Tajima, O ^[1]

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1. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); and others

We report on the first observation of D{sub 1}{sup 0}(2420){yields}D{sup 0}{pi}{sup -}{pi}{sup +} and D{sub 1}{sup +}(2420){yields}D{sup +}{pi}{sup -}{pi}{sup +} decays (where the contribution from the dominant known D{sub 1}{yields}D*{pi} decay mode is excluded) in the B{sup -}{yields}D{sub 1}{sup 0}{pi}{sup -} and B{sup 0}{yields}D{sub 1}{sup +}{pi}{sup -} decays, respectively. The observation is based on 15.2x10{sup 7} BB events collected with the Belle detector at the KEKB collider. We also set 90% confidence level upper limits for the branching fractions of the four following decays: B{sup -}{yields}D{sub 1}{sup 0}{pi}{sup -}, D{sub 1}{sup 0}{yields}D*{sup 0}{pi}{sup -}{pi}{sup +}, B{sup 0}{yields}D{sub 1}{sup +}{pi}{sup -}, D{sub 1}{sup +}{yields}D{sup *+}{pi}{sup -}{pi}{sup +}, B{sup -}{yields}D{sub 2}*{sup 0}(2460){pi}{sup -}, D{sub 2}*{sup 0}{yields}D*{sup 0}{pi}{sup -}{pi}{sup +}, B{sup 0}{yields}D{sub 2}*{sup +}(2460){pi}{sup -}, D{sub 2}*{sup +}{yields}D{sup *+}{pi}{sup -}{pi}{sup +}.

• OSTI ID: 20696353
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 22 Vol. 94; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MINUS MESONS
B NEUTRAL MESONS
BRANCHING RATIO
D NEUTRAL MESONS
D PLUS MESONS
D1-2420 MESONS
HADRONIC PARTICLE DECAY
PIONS MINUS
PIONS PLUS