The dilepton mass spectrum in p (p) over bar --> l(+)l(-) + X interactions is studied using dielectrons (ee) and dimuons (mu mu) in 110 pb(-1) of data collected with the Collider Detector at Fermilab. The data are consistent with standard model predictions. The mass spectrum, being a probe for new physics, is examined for new interactions of quarks and leptons from a common composite structure. Assuming a contact interaction with the conventional coupling g(0)(2)/4 pi = 1 limits on chiral quark-electron and quark-muon compositeness scales in the range of 2.5 to 4.2 TeV are obtained.

Limits on quark-lepton compositeness scales from dileptons produced in 1.8 TeV p(p)over-bar collisions

INTROZZI, GIANLUCA;
1997-01-01

Abstract

The dilepton mass spectrum in p (p) over bar --> l(+)l(-) + X interactions is studied using dielectrons (ee) and dimuons (mu mu) in 110 pb(-1) of data collected with the Collider Detector at Fermilab. The data are consistent with standard model predictions. The mass spectrum, being a probe for new physics, is examined for new interactions of quarks and leptons from a common composite structure. Assuming a contact interaction with the conventional coupling g(0)(2)/4 pi = 1 limits on chiral quark-electron and quark-muon compositeness scales in the range of 2.5 to 4.2 TeV are obtained.
1997
79
2198
2203
5
466
info:eu-repo/semantics/article
262
F., Abe; H., Akimoto; A., Akopian; M. G., Albrow; S. R., Amendolia; D., Amidei; J., Antos; S., Aota; G., Apollinari; T., Asakawa; W., Ashmanskas; M., ...espandi
1 Contributo su Rivista::1.1 Articolo in rivista
none
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/577574
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 86
  • ???jsp.display-item.citation.isi??? 92
social impact