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Time-integrated and time-dependent angular analyses of B -> J/psi K pi: A measurement of cos2 beta with no sign ambiguity from strong phases

Abstract:

We present results on B → J/ψKπ decays using e+ e- annihilation data collected with the BABAR detector at the Y(4S) resonance. The detector is located at the PEP-II asymmetric-energy storage ring facility at the Stanford Linear Accelerator Center. Using approximately 88 × 106 BB̄ pairs, we measure the decay amplitudes for the flavor eigenmodes and observe strong-phase differences indicative of final-state interactions with a significance of 7.6 standard deviations. We use the interference bet...

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Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.71.032005

Authors


Boutigny, D More by this author
Couderc, F More by this author
Gaillard, JM More by this author
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Journal:
PHYSICAL REVIEW D
Volume:
71
Issue:
3
Publication date:
2005-02-05
DOI:
EISSN:
1550-2368
ISSN:
0556-2821
URN:
uuid:508f0c0b-d02e-4731-8bb3-2bda79a05554
Source identifiers:
25816
Local pid:
pubs:25816
Language:
English

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