Evidence for $CP$ violation in $B^{+} \to K^{*}(892)^{+} \pi^{0}$ from a Dalitz plot analysis of $B^{+} \to K^{0}_{S} \pi^{+} \pi^{0}$ decays - INSPIRE

DataBETA

Evidence for $CP$ violation in $B^{+} \to K^{*}(892)^{+} \pi^{0}$ from a Dalitz plot analysis of $B^{+} \to K^{0}_{S} \pi^{+} \pi^{0}$ decays

BaBar

Collaboration

Jan 4, 2015

21 pages

Published in:

Phys.Rev.D 96 (2017) 7, 072001

Published: Oct 2, 2017

e-Print:

1501.00705 [hep-ex]

DOI:

10.1103/PhysRevD.96.072001

PDG:

{{\mathit B}^{+}}

\rightarrow

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

Report number:

BABAR-PUB-14-011,
SLAC-PUB-16186,
BABAR-PUB-14/011,
SLAC-PUB-16186

Experiments:

SLAC-PEP2-BABAR

View in:

reference search32 citations

Citations per year

Abstract: (APS)

We report a Dalitz plot analysis of charmless hadronic decays of charged B mesons to the final state KS0π+π0 using the full BABAR data set of 470.9±2.8 million BB¯ events collected at the Υ(4S) resonance. We measure the overall branching fraction and CP asymmetry to be B(B+→K0π+π0)=(31.8±1.8±2.1-0.0+6.0)×10-6 and ACP(B+→K0π+π0)=0.07±0.05±0.03-0.03+0.02, where the uncertainties are statistical, systematic, and due to the signal model, respectively. This is the first measurement of the branching fraction for B+→K0π+π0. We find first evidence of a CP asymmetry in B+→K*(892)+π0 decays: ACP(B+→K*(892)+π0)=-0.52±0.14±0.04-0.02+0.04. The significance of this asymmetry, including systematic and model uncertainties, is 3.4 standard deviations. We also measure the branching fractions and CP asymmetries for three other intermediate decay modes.

Note:

22 pages, 15 postscript figures

13.25.Hw
12.15.Hh
11.30.Er
experimental results
CP: violation
CKM matrix
asymmetry
branching ratio
Dalitz plot
Upsilon(10570)

References(48)

Figures(15)

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