Charginos and neutralinos are searched for in the data collected by the ALEPH experiment at LEP for centre-of-mass energies up to 209 GeV. The negative result of these searches is combined with those from searches for sleptons and Higgs bosons to derive an absolute lower limit of 43.1 GeV/c2 on the mass of the lightest supersymmetric particle (LSP), assumed to be the lightest neutralino. This limit is obtained in the framework of the MSSM with R-parity conservation and with gaugino and sfermion mass unification at the GUT scale and assuming no mixing in the stau sector. The LSP limit degrades only slightly to 42.4 GeV/c2 if stau mixing is considered. Within the more constrained framework of minimal supergravity, the limit is 50 GeV/c 2.

HEISTER A, SCHAEL S, BARATE R, BRUNELIE, RE R, DE BONIS I, et al. (2004). Absolute mass lower limit for the lightest neutralino of the MSSM from e(+)e(-) data at root s up to 209 GeV. PHYSICS LETTERS. SECTION B, 583(3-4), 247-263 [10.1016/j.physletb.2003.12.066].

Absolute mass lower limit for the lightest neutralino of the MSSM from e(+)e(-) data at root s up to 209 GeV

RASO, Giuseppe;
2004

Abstract

Charginos and neutralinos are searched for in the data collected by the ALEPH experiment at LEP for centre-of-mass energies up to 209 GeV. The negative result of these searches is combined with those from searches for sleptons and Higgs bosons to derive an absolute lower limit of 43.1 GeV/c2 on the mass of the lightest supersymmetric particle (LSP), assumed to be the lightest neutralino. This limit is obtained in the framework of the MSSM with R-parity conservation and with gaugino and sfermion mass unification at the GUT scale and assuming no mixing in the stau sector. The LSP limit degrades only slightly to 42.4 GeV/c2 if stau mixing is considered. Within the more constrained framework of minimal supergravity, the limit is 50 GeV/c 2.
http://resolver.ebscohost.com/openurl?sid=google&auinit=A&aulast=Heister&atitle=Absolute+mass+lower+limit+for+the+lightest+neutralino+of+the+MSSM+from+e%2B+e%E2%88%92+data+at+s+up+to+209+GeV&id=doi:10.1016/j.physletb.2003.12.066&title=Physics+Letters+B&volume=583&issue=3-4&date=2004&spage=247&issn=0370-2693
HEISTER A, SCHAEL S, BARATE R, BRUNELIE, RE R, DE BONIS I, et al. (2004). Absolute mass lower limit for the lightest neutralino of the MSSM from e(+)e(-) data at root s up to 209 GeV. PHYSICS LETTERS. SECTION B, 583(3-4), 247-263 [10.1016/j.physletb.2003.12.066].
File in questo prodotto:
File Dimensione Formato  
doi_10.1016_j.physletb.2003.12.066.pdf

accesso aperto

Dimensione 860.77 kB
Formato Adobe PDF
860.77 kB Adobe PDF Visualizza/Apri

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: http://hdl.handle.net/10447/29908
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 55
  • ???jsp.display-item.citation.isi??? 53
social impact