First model-independent Dalitz analysis of $B^0 \to DK^*0$, $D\to K_S^0\pi^+\pi^-$ decay
We report a measurement of the amplitude ratio?rS?of?B0→D0K?0?and?B0→D0ˉK?0?decays with a Dalitz analysis of?D→K0Sπ+π??decays, for the first time using a model-independent method. We set an upper limit?rS<0.87?at the 68\% confidence level, using the full data sample of?772×106?BBˉ?pairs collected at the?Υ(4S)?resonance with the Belle detector at the KEKB?e+e??collider. This result is obtained from observables?x?=+0.4+1.0+0.0?0.6?0.1±0.0,?y?=?0.6+0.8+0.1?1.0?0.0±0.1,?x+=+0.1+0.7+0.0?0.4?0.1±0.1?and?y+=+0.3+0.5+0.0?0.8?0.1±0.1, where?x±=rScos(δS±?3),?y±=rSsin(δS±?3)?and??3?(δS)?is the weak (strong) phase difference between?B0→D0K?0?and?B0→D0ˉK?0.
We report a measurement of the amplitude ratiorSofB0D0K0andB0D0K0decays with a Dalitz analysis ofDK0S+decays, for the first time using a model-independent method. We set an upper limitrS<0.87at the 68\% confidence level, using the full data sample of772106BBpairs collected at the(4S)resonance with the Belle detector at the KEKBe+ecollider. This result is obtained from observablesx=+0.4+1.0+0.00.60.10.0,y=0.6+0.8+0.11.00.00.1,x+=+0.1+0.7+0.00.40.10.1andy+=+0.3+0.5+0.00.80.10.1, wherex=rScos(S3),y=rSsin(S3)and3(S)is the weak (strong) phase difference betweenB0D0K0andB0D0K0.
Negishi, K. and others
物理学
Bellemodel-independent
Negishi, K. and others.First model-independent Dalitz analysis of $B^0 \to DK^*0$, $D\to K_S^0\pi^+\pi^-$ decay[EB/OL].(2016-09-12)[2025-08-25].https://chinaxiv.org/abs/201609.00721.点此复制
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