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Title: Evidence for C P violation in B + K * ( 892 ) + π 0 from a Dalitz plot analysis of B + K S 0 π + π 0 decays

Journal Article · · Physical Review D
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less

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 Β(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.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
The BaBar Collaboration
Grant/Contract Number:
AC02-76SF00515; AC02-05CH11231
OSTI ID:
1417668
Alternate ID(s):
OSTI ID: 1395922; OSTI ID: 1421821
Report Number(s):
SLAC-PUB-16186; PRVDAQ; TRN: US1800479
Journal Information:
Physical Review D, Vol. 96, Issue 7; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Figures / Tables (20)


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