Abstract
Utilizing the dataset corresponding to an integrated luminosity of $2.93$ fb$^{-1}$ at $\sqrt{s}=3.773$ GeV collected by the BESIII detector, we report the first amplitude analysis and branching fraction measurement of the $D^0\rightarrow K^-\pi^+\pi^0\pi^0$ decay. We investigate the sub-structures and determine the relative fractions and the phases among the different intermediate processes. Our results are used to provide an accurate detection efficiency and allow measurement of ${\cal B}(D^0\rightarrow K^-\pi^+\pi^0\pi^0) \,=\, (8.86 \pm 0.13(\text{stat}) \pm 0.19(\text{syst}))\%$.
Highlights
Many measurements of D meson decays have been performed since the D mesons were discovered in 1976 byMark I [1,2]
2.93 fb−1 at pffiffi s collected by the BESIII detector, we report the first amplitude analysis and branching fraction measurement of the D0 → K−πþπ0π0 decay
The EVTGEN [15] package is used to simulate the known decay modes with branching fractions (BFs) taken from the Particle Data Group (PDG) [16], and the remaining unknown decays are generated with the LUNDCHARM model [17]
Summary
Most of the low-multiplicity D decay mode branching fractions (BFs) are well measured. The D0 → K−πþπ0π0 decay has a large BF and is often used as a D0 meson “tag mode” in experiments, 092008-3. Such as in the CLEO and BESIII studies of D0 semileptonic decays [7,8]. This mode contributes up to 10% of the total reconstructed tags. The excellent tracking, precision calorimetry, and a large DDthreshold data sample at BESIII provide an excellent opportunity for study of the unmeasured D0 → K−πþπ0π0 decay mode. We report here the first partial wave analysis (PWA) and BF measurement of the D0 → K−πþπ0π0 decay
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
