Measurement of phi(3) with Dalitz plot analysis of B+ ---> D(*)K(*)+ decay - INSPIRE

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Measurement of phi(3) with Dalitz plot analysis of B+ ---> D()K()+ decay

Belle

Collaboration

•

A. Poluektov
(
- Novosibirsk, IYF
)

Apr, 2006

18 pages

Published in:

Phys.Rev.D 73 (2006) 112009

e-Print:

hep-ex/0604054 [hep-ex]

DOI:

10.1103/PhysRevD.73.112009

PDG: r

_{B}

{{\mathit B}^{+}}

\rightarrow

{{\mathit D}^{0}}{{\mathit K}^{+}}

Report number:

BELLE-PREPRINT-2006-14,
KEK-PREPRINT-2006-8

Experiments:

KEK-BF-BELLE

View in:

ADS Abstract Service

reference search158 citations

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Abstract:

We present a measurement of the unitarity triangle angle phi_3 using a Dalitz plot analysis of the K0_S pi+ pi- decay of the neutral D meson from the B+- -> D(*)K(*)+- process. The method employs the interference between D0 and D0bar to extract the angle phi_3, strong phase Delta and the ratio r of suppressed and allowed amplitudes. We apply this method to a 357 fb-1 data sample collected by the Belle experiment. The analysis uses three modes: B+ -> DK+, B+ -> D*K+ with D* -> Dpi0, and B+ -> DK*+ with K*+ -> K0_S pi+, as well as the corresponding charge-conjugate modes. From a combined maximum likelihood fit to the three modes, we obtain phi_3=53+15-18(stat)+-3(syst)+-9(model) degrees. The corresponding two standard deviation interval is 8

14.40.Nd
13.25.Hw
12.15.Hh
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B+: hadronic decay
D*(2010): hadronic decay
D0: hadronic decay

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Figures(0)

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