Measurement of the Λb0 lifetime in the exclusive decay Λb0→J/ψΛ0 in pp¯ collisions at s=1.96 TeV

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American Physical Society

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We measure the Λb0 lifetime in the fully reconstructed decay Λb0→J/ψΛ0 using 10.4fb−1 of pp¯ collisions collected with the D0 detector at s=1.96TeV. The lifetime of the topologically similar decay channel B0→J/ψKS0 is also measured. We obtain τ(Λb0)=1.303±0.075(stat)±0.035(syst)ps and τ(B0)=1.508±0.025(stat)±0.043(syst)ps. Using these measurements, we determine the lifetime ratio of τ(Λb0)/τ(B0)=0.864±0.052(stat)±0.033(syst).

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Abazov, V. M., Abbott, B., Acharya, B. S., Adams, M., Adams, T., Alexeev, G. D., . . . Zivkovic, L. (2012). Measurement of the Λb0 lifetime in the exclusive decay Λb0→J/ψΛ0 in pp¯ collisions at s=1.96 TeV. Physical Review D - Particles, Fields, Gravitation and Cosmology, 85(11), 112003. http://dx.doi.org/10.1103/PhysRevD.85.112003

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© 2012 American Physical Society.

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