Study of time-dependent CP violation in B0 ---> J/psi pi0 decays
Collaboration
5 pages
Published in:
- Phys.Rev.Lett. 93 (2004) 261801
e-Print:
- hep-ex/0408105 [hep-ex]
PDG: ( )
Report number:
- BELLE-PREPRINT-2004-23,
- KEK-PREPRINT-2004-39
Experiments:
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Citations per year
Abstract:
We report a measurement of CP asymmetry parameters in the decay B0(B0bar) -> J/Psi pi0, which is governed by the b->c cbar d transition. The analysis is based on a 140/fb data sample accumulated at the Upsilon(4S) resonance by the belle detector at the KEKB asymmetric-energy e+e- collider. We fully reconstruct one neutral B meson in the J/Psi pi0 final state. The accompanying B meson flavor is identified by its decay products. From the distribution of proper time intervals between the two B decays, we obtain the following CP-violating parameters: S_{J/Psi pi0}=-0.72+-0.42+-0.09 and A_{J/Psi pi0}=-0.01 +-0.29+-0.03.- 12.15.Hh
- 11.30.Er
- 13.25.Hw
- electron positron: colliding beams
- electron positron: annihilation
- Upsilon(10570): electroproduction
- B: pair production
- B0: hadronic decay
- J/psi(3100)
- CP: violation
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