New signals of an R-parity violating model of neutrino mass at the Fermilab Tevatron
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physics, Jadavpur University, Kolkata- 700 032 (India)
In a variety of models of neutrino masses and mixings the lighter top squark decays into competing R-parity violating and R-parity conserving channels. Using PYTHIA we have estimated in a model independent way the minimum value of P{identical_to}BR(t-tilde){sub 1}{yields}c{chi}-tilde{sub 1}{sup 0})xBR(t-tilde){sub 1}{yields}l{sub i}{sup +}b), where l{sub i}=e{sup +} and {mu}{sup +}, corresponding to an observable signal involving the final state 1l+jets+Ee{sub T} (carried by the neutrinos from the {chi}-tilde{sub 1}{sup 0} decay) at Tevatron Run II. For the kinematical cuts designed in this paper P depends on m{sub t-tilde{sub 1}} only. We then compute P for representative choices of the model parameters constrained by the oscillation data and find that over a significant region of the allowed parameter space P is indeed larger than P{sub min}. This signal is complementary to the dilepton+dijet signal studied in several earlier experimental and phenomenological analyses and may be observed even if BR(t-tilde){sub 1}{yields}l{sub i}{sup +}b) is an order of magnitude smaller than BR(t-tilde{sub 1}{yields}c{chi}-tilde{sub 1}{sup 0}). The invariant mass distribution of the hardest lepton and the hardest jet may determine m{sub t-tilde{sub 1}} and reveal the lepton number violating nature of the underlying interaction. The invariant mass distribution of the two lowest energy jets may determine m{sub {chi}}{sub -tilde{sub 1}{sup 0}}.
- OSTI ID:
- 21020307
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 7 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
Similar Records
Probing R-parity violating models of neutrino mass at the LHC via top squark decays
Using the e{sup {+-}} {mu}{sup {+-}} + E{sub T}{sup miss} signature in the search for supersymmetry and lepton-flavor violation in neutralino decays
Extracting MSSM masses from heavy Higgs boson decays to four leptons at the CERN LHC
Journal Article
·
Wed Apr 01 00:00:00 EDT 2009
· Physical Review. D, Particles Fields
·
OSTI ID:21308212
Using the e{sup {+-}} {mu}{sup {+-}} + E{sub T}{sup miss} signature in the search for supersymmetry and lepton-flavor violation in neutralino decays
Journal Article
·
Mon Oct 15 00:00:00 EDT 2007
· Physics of Atomic Nuclei
·
OSTI ID:21077597
Extracting MSSM masses from heavy Higgs boson decays to four leptons at the CERN LHC
Journal Article
·
Tue Apr 01 00:00:00 EDT 2008
· Physical Review. D, Particles Fields
·
OSTI ID:21249967