The hep-ex data base was decided not to be an appropriate place to make
DELPHI notes public. Sorry for the inconvenience.Comment: the paper should not have been made publi

Andersson, P.

De Min, A.

Hernandez, J. J.

Hultqvist, K.

Lipniacka, A.

Matteuzzi, C.

Navas, S.

Ortuno, S.

Rebecchi, P.

Trombini, A.

English

arXiv

An update of the searches for charginos and neutralinos in DELPHI is presented, based mainly on recent data collected at centre-of-mass energies of 161GeV and 172GeV. No signal is found. For a sneutrino with mass above 300GeV/c^2 and a mass difference between the chargino and the lightest neutralino above 10GeV/c^2 the lower limit at 95% confidence level on the chargino mass ranges from 84.5GeV/c^2 to the kinematical limit (86.0GeV/c^2). The limit in the case of a light sneutrino is 67.8GeV/c^2. Upper limits on neutralino pair production cross-sections of about a picobarn are derived. The (mu,M_2) domain excluded in the MSSM-GUT scenario is determined. For a heavy sneutrino a lower limit on the mass of the lightest neutralino which of 24.9GeV/c^2 for tan(beta) .ge. 1 is derived. The search has been extended to the case where the lightest neutralino is unstable and decays into a photon and a gravitino

Andersson, P

Min, A D

Hernández, J J

Hultqvist, K

Lipniacka, A

Matteuzzi, C

Navas, S

Ortuno, S

Rebecchi, P

Trombini, A

CERN Document Server

DELPHI Collaboration DELPHI 97-41 PHYS 69428 April, 1997Search for charginos, neutralinos, and gravitinos atLEPP. Andersson,A. De Min, J.J. Hernandez, K. Hultqvist, A. Lipniacka,C. Matteuzzi, S. Navas, S. Ortuno, P. Rebecchi, A. TrombiniAbstractThe paper has been withdrawn from hep-ex database and is available from theDELPHI notes archive on:http : ==wwwcn:cern:ch= pubxx=www=delsec=delnote=dn1997:html.The hep-ex data base was decided not to be an appropriate place to make DEL-PHI notes public. Sorry for the inconvenience.

Search for charginos, neutralinos, and gravitinos at LEP

Search for charginos, neutralinos, and gravitinos at LEP

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