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Measurement of the mass and width of the Λc (2625)+ charmed baryon and the branching ratios of Λc (2625)+ → Σc0 π+ and Λc (2625)+ → Σc+ + π-
Using the entire data sample of 980 fb-1 collected at or near the Υ(4S) resonance with the Belle detector operating at the KEKB asymmetric-energy e+e- collider, we report the measurement of the mass, width, and the branching ratios of the Λc(2625)+ charmed baryon. The mass difference between Λc(2625)+ and Λc+ is measured to be M(Λc(2625)+)-M(Λc+)=341.518±0.006±0.049 MeV/c2. The upper limit on the width is measured to be Γ(Λc(2625)+)<0.52 MeV/c2 at 90% confidence level. Based on a full Dalitz plot fit, branching ratios with respect to the mode Λc(2625)+→Λc+π+π- are measured to be B(Λc(2625)+→Σc0π+)B(Λc(2625)+→Λc+π+π-)=(5.19±0.23±0.40)% and B(Λc(2625)+→Σc++π-)B(Λc(2625)+→Λc+π+π-)=(5.13±0.26±0.32)%, where the first and second uncertainties are statistical and systematic, respectively. These measurements can be used to further constrain the parameters of the underlying theoretical models
Measurement of the mass and width of the and the branching ratios of and
Using the entire data sample of collected with the
Belle detector operating at the KEKB asymmetric-energy collider, we report the
measurement of the mass, width, and the relative branching ratios of the
charmed baryon. The mass difference between
and is measured to be .
The upper limit on the width is measured to be at 90\% credibility level. Based on a full
Dalitz plot fit, branching ratios with respect to the mode are measured to be
and . These measurements can be used to further
constrain the parameters of the underlying theoretical models
Astronomische Nachrichten, nos 2625-2631
Radau Rodolphe. Astronomische Nachrichten, nos 2625-2631. In: Bulletin astronomique, tome 1, 1884. pp. 627-632
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