40 research outputs found
Measurement of Branching Fractions of Hadronic Decays of the Baryon
Using a data sample of 980 of annihilation data
taken with the Belle detector operating at the KEKB asymmetric-energy
collider, we report the results of a study of the decays of the
charmed baryon into hadronic final states. We report the most precise
measurements to date of the relative branching fractions of the
into , , , and
, as well as the first measurements of the branching fractions
of the into , , and , all with respect to the decay. In
addition, we investigate the resonant substructure of these modes. Finally, we
present a limit on the branching fraction for the decay
Measurement of the Decays at Belle
We report measurements of the branching fractions of the decays
, and
relative to the reference channel
. The analysis is based on the full data sample
collected at and close to resonance by the Belle detector at the
KEKB asymmetric-energy collider corresponding to the integrated
luminosity of 711 fb. We measure , and . The listed uncertainties are statistical and
systematic, respectively.Comment: Submitted to PR
Measurement of in with decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data
We report measurements of and from a
time-dependent Dalitz plot analysis of with decays, where the light unflavored and neutral
hadron is a , , or meson. The analysis is
performed with a combination of the final data sets of the \babar\ and Belle
experiments containing and
pairs collected at the resonance at the
asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We
measure and . The result for the direct
measurement of the angle is . The last quoted
uncertainties are due to the composition of the decay amplitude model, which is newly established by a Dalitz plot
amplitude analysis of a high-statistics data sample
as part of this analysis. We find the first evidence for at the
level of standard deviations. The measurement excludes the trigonometric
multifold solution at the level of
standard deviations and therefore resolves an ambiguity in the
determination of the apex of the CKM Unitarity Triangle. The hypothesis of
is ruled out at the level of standard deviations, and
thus CP violation is observed in decays.Comment: To be submitted to Physical Review
Angular analysis of the e⁺e⁻ →D(*)+-D*-+ process near the open charm threshold using initial-state radiation
Angular analysis of the e+e−→D(*)±D*∓ process near the open charm threshold using initial-state radiation
Observation of Excited Charmed Baryons in Collisions
Using the entire Belle data sample of 980 of collisions, we present the results of a study of excited charmed baryons in the decay mode . We show confirmation of four of the five narrow states reported by the LHCb Collaboration: the , , , and