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We report the results of several studies of the Lambda_c+pi+pi-X final statein continuum e+e- annihilation data collected by the Belle detector. Ananalysis of angular distributions in Lambda_c(2880)->Sigma_c(2455)pi decaysstrongly favors a Lambda_c(2880) spin assignment of 5/2 over 3/2 or 1/2. Wefind evidence for Lambda_c(2880)->Sigma_c(2520)pi decay and measure the ratioof Lambda_c(2880) partial widthsGamma[Sigma_c(2520)pi]/Gamma[Sigma_c(2455)pi]=0.225+-0.062+-0.025. This valuefavors the Lambda_c(2880) spin-parity assignment of 5/2+ over 5/2-. We alsoreport the first observation of Lambda_c(2940)->Sigma_c(2455)pi decay andmeasure Lambda_c(2880) and Lambda_c(2940) parameters. These studies are basedon a 553/fb data sample collected at or near the Upsilon(4S) resonance, at theKEKB collider.Comment: 6 pages, 3 figures; submitted to PR

physical review letters

Experimental Constraints on the Spin and Parity of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>Λ</mml:mi><mml:mi>c</mml:mi></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>2880</mml:mn><mml:msup><mml:mo stretchy="false">)</mml:mo><mml:mo>+</mml:mo></mml:msup></mml:math>

Experimental Constraints on the Spin and Parity of theΛc(2880)+