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We have studied new CP violating effects in $\Lambda_b \to p \pi$ decay mode,that can arise in Minimal Supersymmetric Standard Model with R-parityviolation. We have estimated how much R-parity violation modifies the StandardModel predictions for CP asymmetries within the present bounds. We found thatin the R-parity violating model, the rate asymmetry ($a_{cp}$) is suppressed(about 10 times) and the asymmetry parameter $A(\alpha)$ is enhanced(approximately $10^2$ times) with respect to the SM predictions.Comment: Latex, 8 page

physical review. d. particles, fields, gravitation, and cosmology/physical review. d. particles and fields

Effects of<i>R</i>-parity violation on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>CP</mml:mi></mml:math>asymmetries in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>Λ</mml:mi></mml:mrow><mml:mrow><mml:mi>b</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mo>→</mml:mo><mml:mi>p</mml:mi><mml:mi>π</mml:mi></mml:math>decay

Effects ofR-parity violation onCPasymmetries inΛb→pπdecay