Observation of D{sub s1}(2536){sup +}{yields}D{sup +}{pi}{sup -}K{sup +} and angular decomposition of D{sub s1}(2536){sup +}{yields}D*{sup +}K{sub S}{sup 0}

Journal Article · Fri Feb 01 00:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.032001· OSTI ID:21039003

Balagura, V; Chistov, R; Danilov, M; Liventsev, D; Medvedeva, T; Mizuk, R; Pakhlov, P; Pakhlova, G; Tikhomirov, I; Uglov, T ^[1]; Adachi, I; Brodzicka, J; Haba, J; Hazumi, M; Itoh, R; Iwasaki, Y; Katayama, N; Kichimi, H; Krokovny, P; Nakao, M ^[2]

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1. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)
2. High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)

Using 462 fb{sup -1} of e{sup +}e{sup -} annihilation data recorded by the Belle detector, we report the first observation of the decay D{sub s1}(2536){sup +}{yields}D{sup +}{pi}{sup -}K{sup +}. The ratio of branching fractions (B(D{sub s1}(2536){sup +}{yields}D{sup +}{pi}{sup -}K{sup +})/B(D{sub s1}(2536){sup +}{yields}D*{sup +}K{sup 0})) is measured to be (3.27{+-}0.18{+-}0.37)%. We also study the angular distributions in the D{sub s1}(2536){sup +}{yields}D*{sup +}K{sub S}{sup 0} decay and measure the ratio of D- and S-wave amplitudes. The S-wave dominates, with a partial width of {gamma}{sub S}/{gamma}{sub total}=0.72{+-}0.05{+-}0.01.

• OSTI ID: 21039003
• Journal Information: Physical Review. D, Particles Fields, Vol. 77, Issue 3; Other Information: DOI: 10.1103/PhysRevD.77.032001; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). Belle Collaboration; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
ANGULAR DISTRIBUTION
ANNIHILATION
BRANCHING RATIO
D PLUS MESONS
D S MESONS
D*-2010 MESONS
ELECTRONS
KAONS NEUTRAL SHORT-LIVED
KAONS PLUS
MULTIPARTICLE SPECTROMETERS
PARTICLE DECAY
PARTICLE IDENTIFICATION
PARTICLE WIDTHS
PIONS MINUS
POSITRONS
QUANTUM CHROMODYNAMICS
S WAVES