Search for resonant $\widetilde\nu$ production at $\sqrt{s}$ = 183 to 208 GeV

Searches for resonant sneutrino production in e+e- collisions under the assumption that R-parity is not conserved and that the dominant R-parity violating coupling is lambda_{121} or lambda_{131} used data recorded by DELPHI in 1997 to 2000 at centre-of-mass energies of 183 to 208 GeV. No deviation from the Standard Model was observed. Upper limits are given for the lambda_{121} and lambda_{131} couplings as a function of the sneutrino mass and total width. The limits are especially stringent for sneutrino masses equal to the centre-of-mass energies with the highest integrated luminosities recorded.

Note:

21 pages, 8 figures, Accepted by Eur. Phys. J. C Report-no: CERN-EP/2002-090 Journal-ref: Eur. Phys. J. C 28 (2003) 15-26

electron positron: colliding beams
electron positron: annihilation
sparticle: search for
sneutrino: electroproduction
sneutrino: decay modes
R parity: violation
supersymmetry
supergravity
electroweak interaction: validity test
sneutrino: coupling

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Search for resonant νundefined\widetilde\nuν production at s\sqrt{s}s​ = 183 to 208 GeV

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Search for resonant $\widetilde\nu$ production at $\sqrt{s}$ = 183 to 208 GeV