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Evidence for CP violation in B+ →k∗ (892)+π0 from a Dalitz plot analysis of B+ → KS0 π+π0 decays. / <i>B<span class="sc">a</span>B<span class="sc">ar</span></i> Collaboration.
In: Physical Review D, Vol. 96, No. 7, 072001, 02.10.2017.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Evidence for CP violation in B+ →k∗ (892)+π0 from a Dalitz plot analysis of B+ → KS0 π+π0 decays
AU - <i>B<span class="sc">a</span>B<span class="sc">ar</span></i> Collaboration
AU - Lees, J. P.
AU - Poireau, V.
AU - Tisserand, V.
AU - Grauges, E.
AU - Palano, A.
AU - Eigen, G.
AU - Stugu, B.
AU - Brown, D. N.
AU - Kerth, L. T.
AU - Kolomensky, Yu G.
AU - Lee, M. J.
AU - Lynch, G.
AU - Koch, H.
AU - Schroeder, T.
AU - Hearty, C.
AU - Mattison, T. S.
AU - McKenna, J. A.
AU - So, R. Y.
AU - Khan, A.
AU - Blinov, V. E.
AU - Buzykaev, A. R.
AU - Druzhinin, V. P.
AU - Golubev, V. B.
AU - Kravchenko, E. A.
AU - Onuchin, A. P.
AU - Serednyakov, S. I.
AU - Skovpen, Yu I.
AU - Solodov, E. P.
AU - Todyshev, K. Yu
AU - Lankford, A. J.
AU - Dey, B.
AU - Gary, J. W.
AU - Long, O.
AU - Franco Sevilla, M.
AU - Hong, T. M.
AU - Kovalskyi, D.
AU - Richman, J. D.
AU - West, C. A.
AU - Eisner, A. M.
AU - Lockman, W. S.
AU - Panduro Vazquez, W.
AU - Schumm, B. A.
AU - Seiden, A.
AU - Chao, D. S.
AU - Cheng, C. H.
AU - Echenard, B.
AU - Flood, K. T.
AU - Hitlin, D. G.
AU - Miyashita, T. S.
AU - Ongmongkolkul, P.
N1 - Publisher Copyright: © 2017 American Physical Society.
PY - 2017/10/2
Y1 - 2017/10/2
N2 - 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.
AB - 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.
KW - BABAR DETECTOR
KW - ISOBAR MODEL
KW - MESON
KW - ASYMMETRIES
KW - SCATTERING
KW - FORMALISM
KW - E(+)E(-)
KW - PHYSICS
UR - http://www.scopus.com/inward/record.url?scp=85033213898&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.96.072001
DO - 10.1103/PhysRevD.96.072001
M3 - Article
AN - SCOPUS:85033213898
VL - 96
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 7
M1 - 072001
ER -
ID: 9959735