English

First observation and measurement of the resonant structure of the lambda_b->lambda_c pi-pi+pi- decay mode

High Energy Physics - Experiment 2019-08-13 v1
Authors: P. Azzurri , P. Barria , M. A. Ciocci , S. Donati , E. Vataga
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Abstract

We present the first observation of the lambda_b->lambda_c pi-pi+pi- decay using data from an integrated luminosity of approximately 2.4 fb-1 of ppbar collisions at ECM=1.96 TeV, collected with the CDF II detector at the Fermilab Tevatron. We also present the first observation of the resonant decays lambda_b->sigma_c(2455)0 pi+pi- ->lambda_c pi-pi+pi-, lambda_b->sigma_c(2455)++ pi-pi- ->lambda_c pi-pi+pi-, lambda_b->lambda_c(2595)+ pi- ->lambda_c pi-pi+pi- and lambda_b->lambda_c(2625)+ pi- ->lambda_c pi-pi+pi-, and measure their relative branching ratios.

Keywords

lambda_b decay resonant structure branching ratio CDF II detector Tevatron

Cite

@article{arxiv.0912.4380,
  title  = {First observation and measurement of the resonant structure of the lambda_b->lambda_c pi-pi+pi- decay mode},
  author = {P. Azzurri and P. Barria and M. A. Ciocci and S. Donati and E. Vataga},
  journal= {arXiv preprint arXiv:0912.4380},
  year   = {2019}
}

Comments

3 pages, 3 figures, to appear in the proceedings of LEPTON PHOTON 2009, Hamburg, Germany

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