Measurement Of The Mass And Width Of The Lambda C 2625 Charmed Baryon And The Branching Ratios Of Lambda C 2625 To Sigma 0c Pi And Lambda C 2625 To Sigma C Pi
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Measurement of the Mass and Width of the [Lambda]c(2625)+ Charmed Baryon and the Branching Ratios of [Lambda]c(2625)+ [to] [Sigma]0c[pi]+ and [Lambda]c(2625)+ [to] [Sigma]++c[pi]-
![Measurement of the Mass and Width of the [Lambda]c(2625)+ Charmed Baryon and the Branching Ratios of [Lambda]c(2625)+ [to] [Sigma]0c[pi]+ and [Lambda]c(2625)+ [to] [Sigma]++c[pi]-](https://library.ardhindie.com/contents/assets/images/blank.png){kind=small}
The mass of the [Lambda]c(2625)+, relative to the [Lambda]+c mass, is already relatively well known, but the large Belle data sample allows for a more precise measurement. No intrinsic width of the [Lambda]c(2625)+ has yet been measured, and the current upper limit [Gamma]
Measurements of the Properties of [Lambda]c (2595), [Lambda]c (2625), [Sigma]c (2455), and [Sigma]c (2520) Baryons
We report measurements of the resonance properties of [Lambda]c(2595)+ and [Lambda]c(2595)+ baryons in their decays to [Lambda]c+[pi]+[pi]- as well as [Sigma]c(2455)++,0 and [Sigma]c(2455)++,0 baryons in their decays to [Lambda]c+[pi]± final states. These measurements are performed using data corresponding to 5.2 fb-1 of integrated luminosity from pp̄ collisions at √s = 1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. Exploiting the largest available charmed baryon sample, we measure masses and decay widths with uncertainties comparable to the world averages for [Sigma]c states, and significantly smaller uncertainties than the world averages for excited [Lambda]c+ states.
Observation of Two Excited Charmed Baryons Decaying Into Lambda(c)+ Pi+-
Using data recorded by the CLEO-II detector at CESR, we report evidence of a pair of excited charmed baryons, one decaying into[Lambda][sub c][sup+][pi][sup+] and the other into[Lambda][sub c][sup+][pi][sup -]. The doubly charged state has a measured mass difference M([Lambda][sub c][sup+][pi][sup+]) - M([Lambda][sub c][sup+]) of 234.5[+-] 1.1[+-] 0.8 MeV and a width of 17.9[sub -3.2][sup+3.8][+-] 4.0 MeV, and the neutral state has a measured mass difference M([Lambda][sub c][sup+][pi][sup -]) - M([Lambda][sub c][sup+]) of 232.6[+-] 1.0[+-] 0.8 MeV and a width of 13.0[sub -3.0][sup+3.7][+-] 4.0 MeV. We identify these states as[Sigma]*[sub c][sup++] and[Sigma]*[sub c][sup 0], the spin 3/2[sup+] excitations of the[Sigma][sub c] baryons.