# Measurement of Decay Amplitudes of $B \to c bar{c}) K*$ with an Angular Analysis, for $(c bar{c})=J/\psi, \psi(2S)$ and $\chi_{c1}$

Abstract : We perform the first three-dimensional measurement of the amplitudes of $B\to \psi(2S) K^*$ and $B\to \chi_{c1} K^*$ decays and update our previous measurement for $B\to J/\psi K^*$. We use a data sample collected with the BaBar detector at the PEP2 storage ring, corresponding to 232 million $B\bar B$ pairs. The longitudinal polarization of decays involving a $J^{PC}=1^{++}$ $\chi_{c1}$ meson is found to be larger than that with a $1^{--}$ $J/\psi$ or $\psi(2S)$ meson. No direct {\it CP}-violating charge asymmetry is observed.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00149793
Contributor : Claudine Bombar <>
Submitted on : Monday, May 28, 2007 - 3:51:46 PM
Last modification on : Saturday, November 28, 2020 - 12:58:03 PM

### Citation

B. Aubert, M. Bona, D. Boutigny, Y. Karyotakis, J.P. Lees, et al.. Measurement of Decay Amplitudes of $B \to c bar{c}) K*$ with an Angular Analysis, for $(c bar{c})=J/\psi, \psi(2S)$ and $\chi_{c1}$. Physical Review D, American Physical Society, 2007, 76, pp.031102. ⟨10.1103/PhysRevD.76.031102⟩. ⟨in2p3-00149793⟩

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