We report measurements of the resonance properties of Lambda(c)(2595)(+) and Lambda(c)(2625)(+) baryons in their decays to Lambda(+)(c) pi(+) pi(-) as well as Sigma(c)(2455)(++,0) and Sigma(c)(2520)(++,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 p (p) over bar collisions at root 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.
Measurements of the properties of Lambda(c)(2595), Lambda(c)(2625), Sigma(c)(2455), and Sigma(c)(2520) baryons
CAUZ, Diego;PAULETTA, Giovanni;ROSSI, Melisa;SANTI, Lorenzo Gianni;SCURI, Fabrizio;
2011-01-01
Abstract
We report measurements of the resonance properties of Lambda(c)(2595)(+) and Lambda(c)(2625)(+) baryons in their decays to Lambda(+)(c) pi(+) pi(-) as well as Sigma(c)(2455)(++,0) and Sigma(c)(2520)(++,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 p (p) over bar collisions at root 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
