We present Dalitz plot analyses for the decays of B mesons to D−D0K+ and D¯0D0K+. We report the observation of the Ds1*(2700)+ resonance in these two channels and obtain measurements of the mass M(Ds1*(2700)+)=2699−7+14  MeV/c2 and of the width Γ(Ds1*(2700)+)=127−19+24  MeV, including statistical and systematic uncertainties. In addition, we observe an enhancement in the D0K+ invariant mass around 2350–2500  MeV/c2 in both decays B0→D−D0K+ and B+→D¯0D0K+, which we are not able to interpret. The results are based on 429  fb−1 of data containing 471×106BB¯ pairs collected at the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory.

Dalitz plot analyses of B0 →d-D0K+ and B+ → D ¯ 0D0K+ decays

BIANCHI, Fabrizio;DE MORI, FRANCESCA;GAMBA, Diego;
2015-01-01

Abstract

We present Dalitz plot analyses for the decays of B mesons to D−D0K+ and D¯0D0K+. We report the observation of the Ds1*(2700)+ resonance in these two channels and obtain measurements of the mass M(Ds1*(2700)+)=2699−7+14  MeV/c2 and of the width Γ(Ds1*(2700)+)=127−19+24  MeV, including statistical and systematic uncertainties. In addition, we observe an enhancement in the D0K+ invariant mass around 2350–2500  MeV/c2 in both decays B0→D−D0K+ and B+→D¯0D0K+, which we are not able to interpret. The results are based on 429  fb−1 of data containing 471×106BB¯ pairs collected at the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory.
2015
91
5
052002-1
052002-14
http://harvest.aps.org/bagit/articles/10.1103/PhysRevD.91.052002/apsxml
Nuclear and High Energy Physics
Lees, J.P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Brown, D.N.; Kerth, L.T.; Kolomensky, Yu.G.; Lee, M.J.; Lynch, ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1570531
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