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Observation of B{sup +}{yields}a{sub 1}{sup +}(1260)K{sup 0} and B{sup 0}{yields}a{sub 1}{sup -}(1260)K{sup +}

Aubert, B. ; Bona, M. ; Boutigny, D. ; Karyotakis, Y. ; Lees, J. P. ; Poireau, V. ; Prudent, X. ; Tisserand, V. ; Zghiche, A. ; Garra Tico, J. ; Grauges, E. ; Lopez, L. ; Palano, A. ; Pappagallo, M. ; Eigen, G. ; Stugu, B. ; Sun, L. ; Abrams, G. S. ; Battaglia, M. ; Brown, D. N.

Physical review letters, 2008-02, Vol.100 (5) [Periódico revisado por pares]

United States

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Título:
Observation of B{sup +}{yields}a{sub 1}{sup +}(1260)K{sup 0} and B{sup 0}{yields}a{sub 1}{sup -}(1260)K{sup +}
Autor: Aubert, B. ; Bona, M. ; Boutigny, D. ; Karyotakis, Y. ; Lees, J. P. ; Poireau, V. ; Prudent, X. ; Tisserand, V. ; Zghiche, A. ; Garra Tico, J. ; Grauges, E. ; Lopez, L. ; Palano, A. ; Pappagallo, M. ; Eigen, G. ; Stugu, B. ; Sun, L. ; Abrams, G. S. ; Battaglia, M. ; Brown, D. N.
Assuntos: A1-1260 MESONS ; ANNIHILATION ; ASYMMETRY ; B NEUTRAL MESONS ; B PLUS MESONS ; BRANCHING RATIO ; ELECTRON-POSITRON INTERACTIONS ; ELECTRONS ; KAONS NEUTRAL ; KAONS PLUS ; PAIR PRODUCTION ; PARTICLE DECAY ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; PIONS MINUS ; PIONS PLUS ; POSITRONS
É parte de: Physical review letters, 2008-02, Vol.100 (5)
Descrição: We present branching fraction measurements of the decays B{sup +}{yields}a{sub 1}{sup +}(1260)K{sup 0} and B{sup 0}{yields}a{sub 1}{sup -}(1260)K{sup +} with a{sub 1}{sup {+-}}(1260){yields}{pi}{sup {+-}}{pi}{sup {+-}}{pi}{sup {+-}}. The data sample corresponds to 383x10{sup 6} BB pairs produced in e{sup +}e{sup -} annihilation through the {upsilon}(4S) resonance. We measure the products of the branching fractions B(B{sup +}{yields}a{sub 1}{sup +}(1260)K{sup 0})B(a{sub 1}{sup +}(1260){yields}{pi}{sup -}{pi}{sup +}{pi}{sup +})=(17.4{+-}2.5{+-}2 = .2)x10{sup -6} and B(B{sup 0}{yields}a{sub 1}{sup -}(1260)K{sup +})B(a{sub 1}{sup -}(1260){yields}{pi}{sup +}{pi}{sup -}{pi}{sup -})=(8.2{+-}1.5{+-}1. = 2)x10{sup -6}. We also measure the charge asymmetries A{sub ch}(B{sup +}{yields}a{sub 1}{sup +}(1260)K{sup 0})=0.12{+-}0.11{+-}0.02 and A{sub ch}(B{sup 0}{yields}a{sub 1}{sup -}(1260)K{sup +})=-0.16{+-}0.12{+-}0.01. The first uncertainty quoted is statistical and the second is systematic.
Editor: United States
Idioma: Inglês

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Observation of B{sup +}{yields}a{sub 1}{sup +}(1260)K{sup 0} and B{sup 0}{yields}a{sub 1}{sup -}(1260)K{sup +}

Aubert, B. ; Bona, M. ; Boutigny, D. ; Karyotakis, Y. ; Lees, J. P. ; Poireau, V. ; Prudent, X. ; Tisserand, V. ; Zghiche, A. ; Garra Tico, J. ; Grauges, E. ; Lopez, L. ; Palano, A. ; Pappagallo, M. ; Eigen, G. ; Stugu, B. ; Sun, L. ; Abrams, G. S. ; Battaglia, M. ; Brown, D. N.

United States

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