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Observation of an excess at 30 GeV in the opposite sign di-muon spectra of ${\rm Z} \to b\overline{ b} + {\rm X}$ events recorded by the ALEPH experiment at LEP

The re-analysis of the archived data recorded at the ${\rm Z}^{0}$ resonance by the ALEPH experiment at LEP during the years 1992-1995 shows an excess in the opposite sign di-muon mass spectra at 30.40 GeV in events containing b quarks. The excess has a natural width of 1.78 GeV. A compatible but sm...

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Detalles Bibliográficos
Autor principal:	Heister, Arno
Lenguaje:	eng
Publicado:	2016
Materias:	Particle Physics - Experiment
Acceso en línea:	http://cds.cern.ch/record/2226690

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