Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC
| dc.creator | Denegri, D. | |
| dc.creator | Majerotto, W. | |
| dc.creator | Rurua, L. | |
| dc.date | 1997-11-17 | |
| dc.date.accessioned | 2026-07-07T12:03:22Z | |
| dc.date.available | 2026-07-07T12:03:22Z | |
| dc.description | 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 $\tanβ$). The signature $l^+ l^- + E_T^{miss}$ + (jets) selects the leptonic decays of $\tildeχ^0_2$, $\tildeχ^0_2 \to \tildeχ^0_1 l^+ l^- $, $\tildeχ^0_2 \to \tilde{l}_{L,R}^{\pm} l^{\mp} \to \tildeχ^0_1 l^+ l^-$. 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 $\tildeχ^0_2$ 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}. | |
| dc.description | 30 page latex file including 19 PCX figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9711357 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9711357 | |
| dc.identifier | Phys.Rev.D58:095010,1998 | |
| dc.identifier | doi:10.1103/PhysRevD.58.095010 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/207762 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Determining the parameters of the Minimal Supergravity Model from 2l + E_T^{miss} + (jets) final states at LHC | |
| dc.type | text |