Projects per year
Abstract
Measurements of the coherence factors (R_Kpipi0 and R_K3pi) and the average strong-phase differences (delta^Kpipi0_D and delta^K3pi_D) for the decays D0-> K-pi+pi0 and D0->K-pi+pi+pi- are presented. These parameters are important inputs to the determination of the unitarity triangle angle gamma in B+/- -> DK+/- decays, where D designates a D0 or D0bar meson decaying to a common final state. The measurements are made using quantum correlated DDbar decays collected by the CLEO-c experiment at the psi(3770) resonance, and augment a previously published analysis by the inclusion of new events in which the signal decay is tagged by the mode D-> K0Spi+pi-. The measurements also benefit from improved knowledge of external inputs, namely the D0D0bar mixing parameters, r_D^Kpi and several D-meson branching fractions. The measured values are R_Kpipi0 = 0.82 +- 0.07, delta_D^Kpipi0 = (164+20-14) deg., R_K3pi = 0.32+0.20-0.28 and delta^K3pi_D = (225+21_-78) deg. Consideration is given to how these measurements can be improved further by using the larger quantum-correlated data set collected by BESIII.
Original language | English |
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Pages (from-to) | 197-203 |
Journal | Physics Letters B |
Volume | 731 |
DOIs | |
Publication status | Published - 2014 |
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Dive into the research topics of 'New determination of the D0→K−π+π0 and D0→K−π+π+π− coherence factors and average strong-phase differences'. Together they form a unique fingerprint.Projects
- 3 Finished
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PrecisionFlavour: Particle Physics Beyond the Energy Frontier (ERC 2011)
1/10/12 → 30/09/18
Project: Research
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IMPROVING SENSITIVITY TO THE UNITARITY TRIANGLE GAMMA WITH CLEO-C CP-TAGGED D0 DECAYS
1/04/08 → 1/04/11
Project: Research
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ERC Starting Grant - PrecisionFlavour: Particle Physics Beyond the Energy Frontier
Jonas Rademacker (Recipient)
1 Oct 2012 → 1 Oct 2017Activity: Other activity types › Fellowship awarded competitively
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CLEO Collaboration (External organisation)
Jonas Rademacker (Member)
2007 → …Activity: Membership types › Membership of external research organisation