Measurement of Delta++ (1232) production in hadronic Z decays

DELPHI Collaboration; Castillo Giménez, María Victoria; Higón Rodríguez, Emilio; Ferrer Soria, Antonio; Chrin, J. T. M.; Cortina Gil, Eduardo; Fuster Verdú, Juan A.; García García, Carmen; Gómez Cadenas, Juan José; Hernández Rey, Juan José; Hernando Morata, José Ángel; Lacasta Llácer, Carlos; Lozano Bahilo, José Julio; Martínez Vidal, Fernando; Martí García, Salvador; Navas Concha, Sergio; Salt Cairols, José; Valls Ferrer, Juan Antonio

Measurement of Delta++ (1232) production in hadronic Z decays

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Identifiers

URI: http://hdl.handle.net/10550/34607

DOI: 10.1016/0370-2693(95)01176-Q

URL: 10.1016/0370-2693(95)01176-Q

Publication date

1995

Authors

DELPHI Collaboration

Castillo Giménez, María Victoria

Higón Rodríguez, Emilio

Ferrer Soria, Antonio

Chrin, J. T. M.

Cortina Gil, Eduardo

Ferrer Soria, Antonio

Fuster Verdú, Juan A.

García García, Carmen

Gómez Cadenas, Juan José

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Abstract

A measurement of the \Delta^{++}(1232) inclusive production in hadronic decays of the Z at LEP is presented, based on 1.3 million hadronic events collected~ by the DELPHI~ detector in the 1994 LEP running~ period. The DELPHI ring imaging Cherenkov counters are used for identifying hadrons. The average \Delta^{++}(1232) multiplicity per hadronic event is 0.079 \pm 0.015 which is more than a factor of two below the JETSET, HERWIG and UCLA model predictions. It agrees with a recently proposed universal mass dependence of particle production rates in e^{+}e^- annihilations.

Keywords

Física nuclear
Partícules (Física nuclear)

Bibliographic reference

DELPHI Collaboration Castillo Giménez, María Victoria Higón Rodríguez, Emilio Ferrer Soria, Antonio 1995 Measurement of Delta++ (1232) production in hadronic Z decays Physics Letters B 361 1-4 207 220

URI

http://hdl.handle.net/10550/34607

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22 - Física

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