Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC

Details Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC

1997-11-17

arxiv.org/abs/hep-ph/9711357v1

Phys.Rev.D58:095010,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 page latex file including 19 PCX figures

Scientific paper

10.1103/PhysRevD.58.095010

We analyse the events with two same-flavour, opposite-sign leptons + $E_T^{miss}$ + (jets) as expected in pp collisions at LHC within the framework of the minimal Supergravity Model. The objective is the determination of the parameters m_0 and m_{1/2} of this model (for a given value of $\tan\beta$). The signature $l^+ l^- + E_T^{miss}$ + (jets) selects the leptonic decays of $\tilde{\chi}^0_2$, $\tilde{\chi}^0_2 \to \tilde{\chi}^0_1 l^+ l^- $, $\tilde{\chi}^0_2 \to \tilde{l}_{L,R}^{\pm} l^{\mp} \to \tilde{\chi}^0_1 l^+ l^-$. We exploit the fact that the invariant dilepton mass distribution has a pronounced structure with a sharp edge at the kinematical endpoint even in such an inclusive final state over a significant part of parameter space. We determine the domain of parameter space where the edge is expected to be visible. We show that a measurement of this edge already constrains the model parameters essentially to three lines in the ($m_0, m_{1/2}$) parameter plane. We work out a strategy to discriminate between the three-body leptonic decays of $\tilde{\chi}^0_2$ and the decays into sleptons $\tilde{l}_{L,R}$. This procedure may make it possible to get information on SUSY particle masses already with low luminosity, L_{int}=10^3 pb^{-1}.

Affiliated with

Also associated with

No associations

Rating

Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-572895