Inclusive Σ+ and Σ0 production in hadronic Z decays

M. Acciarri, P. Achard, O. Adriani, M. Aguilar-Benitez, J. Alcaraz, G. Alemanni, J. Allaby, A. Aloisio, M. G. Alviggi, G. Ambrosi, H. Anderhub, V. P. Andreev, T. Angelescu, F. Anselmo, A. Arefiev, T. Azemoon, T. Aziz, P. Bagnaia, A. Bajo, L. BaksayA. Balandras, S. Banerjee, Sw Banerjee, A. Barczyk, R. Barillère, L. Barone, P. Bartalini, M. Basile, R. Battiston, A. Bay, F. Becattini, U. Becker, F. Behner, L. Bellucci, R. Berbeco, J. Berdugo, P. Berges, B. Bertucci, B. L. Betev, S. Bhattacharya, M. Biasini, A. Biland, J. J. Blaising, S. C. Blyth, G. J. Bobbink, A. Böhm, L. Boldizsar, B. Borgia, D. Bourilkov, M. Bourquin, S. Braccini, J. G. Branson, V. Brigljevic, F. Brochu, A. Buffini, A. Buijs, J. D. Burger, W. J. Burger, X. D. Cai, M. Campanelli, M. Capell, G. Cara Romeo, G. Carlino, A. M. Cartacci, J. Casaus, G. Castellini, F. Cavallari, N. Cavallo, C. Cecchi, M. Cerrada, F. Cesaroni, M. Chamizo, Y. H. Chang, U. K. Chaturvedi, M. Chemarin, A. Chen, G. Chen, G. M. Chen, H. F. Chen, H. S. Chen, G. Chiefari, L. Cifarelli, F. Cindolo, C. Civinini, I. Clare, R. Clare, G. Coignet, A. P. Colijn, N. Colino, S. Costantini, F. Cotorobai

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Abstract

We report on measurements of the inclusive production rate of Σ+ and Σ0 baryons in hadronic Z decays collected with the L3 detector at LEP. The Σ0 baryons are detected through the decay Σ+ → pπ0, while the Σ0 baryons are detected via the decay mode Σ0 → Λγ. The average numbers of Σ+ and Σ0 per hadronic Z decay are measured to be: <N(Σ+)> + <N(Σ+)> = 0.114 ± 0.011(stat) ± 0.009(syst) <N(Σ0)> ± <N(Σ0)> = 0.095 ± 0.015(stat) ± 0.013(syst). These rates are found to be higher than the predictions from Monte Carlo hadronization models and analytical parameterizations of strange baryon production. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)79-88
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume479
Issue number1-3
DOIs
Publication statusPublished - Apr 20 2000

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Acciarri, M., Achard, P., Adriani, O., Aguilar-Benitez, M., Alcaraz, J., Alemanni, G., Allaby, J., Aloisio, A., Alviggi, M. G., Ambrosi, G., Anderhub, H., Andreev, V. P., Angelescu, T., Anselmo, F., Arefiev, A., Azemoon, T., Aziz, T., Bagnaia, P., Bajo, A., ... Cotorobai, F. (2000). Inclusive Σ+ and Σ0 production in hadronic Z decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 479(1-3), 79-88. https://doi.org/10.1016/S0370-2693(00)00369-5