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Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP

  • Regular Article - Experimental Physics
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Abstract

Measurements of inclusive production of the Λ, Ξ- and Ξ*(1530) baryons in two-photon collisions with the L3 detector at LEP are presented. The inclusive differential cross sections for Λ and Ξ- are measured as a function of the baryon transverse momentum, pt, and pseudo-rapidity, η. The mean number of Λ, Ξ- and Ξ*(1530) baryons per hadronic two-photon event is determined in the kinematic range 0.4 GeV<pt<2.5 GeV, |η|<1.2. Overall agreement with the theoretical models and Monte Carlo predictions is observed. A search for inclusive production of the pentaquark θ+(1540) in two-photon collisions through the decay θ+→pK0 S is also presented. No evidence for production of this state is found.

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Correspondence to S. Mele.

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Achard, P., Adriani, O., Aguilar-Benitez, M. et al. Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP. Eur. Phys. J. C 49, 395–410 (2007). https://doi.org/10.1140/epjc/s10052-006-0140-3

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  • DOI: https://doi.org/10.1140/epjc/s10052-006-0140-3

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