Inclusive charm production in two-photon collisions at LEP

The cross section of charm production in γγ collisions <math><mtext>σ(e</mtext><msup><mi></mi><mn>+</mn></msup><mtext>e</mtext><msup><mi></mi><mn>−</mn></msup><mtext>→e</mtext><msup&g...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Dova, María Teresa, Lacentre, Pablo E., L3 Collaboration
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1999
Materias:	Ciencias Exactas Física two-photon collision L3 detector semileptonic decays
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/78057
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

Descripción
Sumario:	The cross section of charm production in γγ collisions <math><mtext>σ(e</mtext><msup><mi></mi><mn>+</mn></msup><mtext>e</mtext><msup><mi></mi><mn>−</mn></msup><mtext>→e</mtext><msup><mi></mi><mn>+</mn></msup><mtext>e</mtext><msup><mi></mi><mn>−</mn></msup><mtext>c</mtext><mtext>c</mtext><mtext>̄</mtext><mtext>X)</mtext></math> is measured at LEP with the L3 detector at centre-of-mass energies from 91 GeV to 183 GeV. Charmed hadrons are identified by electrons and muons from semileptonic decays. The direct process <math><mtext>γγ→c</mtext><mtext>c</mtext><mtext>̄</mtext></math> is found to be insufficient to describe the data. The measured cross section values and event distributions require contributions from resolved processes, which are sensitive to the gluon density in the photon.