Single Sneutrino/Slepton Production at LEP2 and the NLC
نویسندگان
چکیده
We propose a new method of detecting supersymmetry at LEP2 and the NLC when R-parity is violated by an LLĒ operator. We consider the processes eγ → ν̃jek and eγ → l̃kν̄j which can test seven of the nine LLĒ-operators. A Monte-Carlo analysis is performed to investigate the sensitivity to the sneutrino signal, and the 5σ discovery contours in the mν̃j vs. λ plane are presented. For an integrated luminosity of 100 pb , sneutrinos with masses up to Mν̃ < 170GeV/c 2 could be discovered in the near future at LEP2. For the charged slepton production the cross-section is too low to be detectable.
منابع مشابه
N ov 1 99 5 Search for flavor lepton number violation in slepton decays at LEP 2 and NLC
We show that in supersymmetric models with explicit flavor lepton number violation due to soft supersymmetry breaking mass terms there must be flavor lepton number violation in slepton decays. We propose to look for flavor lepton number violation in righthanded selectron and smuon decays. For selectron and smuon lighter than 80 Gev flavor lepton number violation in slepton decays could be disco...
متن کاملR-parity Violating Susy Signals in Lepton-pair Production at the Tevatron
In supersymmetric theories with R-parity breaking, sleptons can be produced in quark-antiquark annihilation at the Tevatron through interactions in which two quark elds are coupled to a slepton eld. If at the same time tri-linear slepton-lepton-lepton couplings are present, the sleptons can be searched for as resonances in p p ! ~ ! l + l ? and ~ ! l nal states. Existing Tevatron data can be ex...
متن کاملDetecting sleptons at hadron colliders and supercolliders.
We study the prospects for detecting the sleptons of the Minimal Supersymmetric Standard Model at hadron colliders and supercolliders. We use ISAJET 7.03 to simulate charged slepton and sneutrino pair production, incorporating slepton and sneutrino cascade decays into our analysis. We find that even with an accumulation of ∼ 1fb of integrated luminosity, it will be very difficult to detect slep...
متن کاملar X iv : h ep - p h / 97 08 47 0 v 1 2 7 A ug 1 99 7 Toward Loop Level Study of Supersymmetric Model at Future e + e − Linear Collider
In the case with a large splitting between the squark and slepton masses, the supersymmetric identities which enforce the equality of the gauge and gaugino couplings are violated in the effective theory below the squark mass threshold. We compute the full one-loop (s)quark corrected slepton production cross-sections. We find that the one-loop corrected slepton production cross-sections can depe...
متن کاملLinear Colliders : [ Addendum to Slepton Production ]
Complementing the preceding study of charged scalar leptons, the sector of the neutral scalar leptons, sneutrinos, is investigated in a high-precision analysis for future e + e − linear colliders. The theoretical predictions for the cross-sections are calculated at the thresholds for non-zero widths and in the continuum including higher-order corrections at the one-loop level. Methods for measu...
متن کامل