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Study of the Production of Strange Particles in Proton–Proton Collisions at √s = 0.9 TeV

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Abstract

The differential yield of strange mesons \( (K_{s}^{0} ,\phi ) \) and singly and doubly strange baryons (Λ, \( \bar{\varLambda } \) and Ξ) in pp collision at 0.9 TeV in the transverse momentum (pT) ranging from 0.1 to 3.5 GeV/c and in the rapidity region of |y| <0.75 is reported. The spectra obtained by Monte Carlo simulations with event generators: EPOS 1.99, EPOS-LHC, HIJING 1.38, QGSJETII-04 and Sibyll2.3c, are compared with the ALICE measurements. For \( K_{s}^{0} \), EPOS-LHC, Sibyll2.3c and QGSJETII-04 models’ predictions are closer to the experimental data at low pT. For Λ and \( \bar{\varLambda } \), EPOS 1.99 and QGSJETII-04 predict in some of the pT regions, while only EPOS 1.99 model predicts well the Ξ spectra. QGSJETII-04 and Sibyll2.3c predict well the distribution of \( \phi \) mesons at high pT. For Λ/\( K_{s}^{0} \), only QGSJETII-04 predicts the ratio very well. Although the models are qualitatively compatible with the data, none of them predict all the distributions over the entire pT range.

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Acknowledgement

This work was supported by the Higher Education Commission (HEC) of Pakistan by the Grant No. 20-3379/NRPU/R&D/HEC/2014.

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Authors and Affiliations

  1. Department of Physics, Abdul Wali khan University Mardan, Mardan, 23200, Pakistan

    M. Ajaz & M. Tufail

  2. Department of Physics, COMSATS University Islamabad, Islamabad, 44000, Pakistan

    Y. Ali

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  1. M. Ajaz
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  2. M. Tufail
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  3. Y. Ali
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Correspondence to M. Ajaz.

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Ajaz, M., Tufail, M. & Ali, Y. Study of the Production of Strange Particles in Proton–Proton Collisions at √s = 0.9 TeV. Arab J Sci Eng 45, 411–416 (2020). https://doi.org/10.1007/s13369-019-04224-8

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