Single Neutralino production at CERN LHC

Abstract

The common belief that the lightest supersymmetric particle (LSP) might be a neutralino, providing also the main Dark Matter (DM) component, calls for maximal detail in the study of the neutralino properties. Motivated by this, we consider the direct production of a single neutralino $\tchi^0_i$ at a high/energy hadron collider, focusing on the $\tchi^0_1$ and $\tchi^0_2$ cases. At Born level, the relevant subprocesses are $q\bar q\to \tchi^0_i \tilde g$, $g q\to \tchi^0_i \tilde q_{L,R}$ and $q\bar q'\to \tchi^0_i\tchi^\pm_j$; while at 1-loop, apart from radiative corrections to these processes, we consider also $gg\to \tchi^0_i\tilde{g}$, for which a numerical code named PLATONgluino is released. The relative importance of these channels turns out to be extremely model dependent. Combining these results with an analogous study of the direct $\tchi^0_i\tchi^0_j$ pair production, should help in testing the SUSY models and the Dark Matter assignment.

22 pages and 12 figures; version to appear in Phys.Rev.D

References in corpus (32)

• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Supersymmetric Dark Matter
• Out Of This World Supersymmetry Breaking
• Gaugino Mass without Singlets
• The Snowmass Points and Slopes: Benchmarks for SUSY Searches
• The Production of Charginos/Neutralinos and Sleptons at Hadron Colliders
• Anomaly mediation in supergravity theories
• Complete set of Feynman rules for the MSSM -- ERRATUM
• One-loop leading logarithms in electroweak radiative corrections, I. Results
• A Non-Standard String/SUSY Scenario and its Phenomenological Implications
• One-loop leading logarithms in electroweak radiative corrections: II. Factorization of collinear singularities
• Indirect Sensitivities to the Scale of Supersymmetry
• Cosmology at the Millennium
• Chargino and Neutralino Decays Revisited
• Dark Matter and Dark Energy: Summary and Future Directions
• Particle Dark Matter - A Theorist's Perspective
• Sudakov expansions at one loop and beyond for charged scalar and fermion pair production in SUSY models at future Linear Colliders
• SUSY Parameter Determination in Combined Analyses at LHC/LC
• The processes $e^{-}{e}^{+}\to \gamma \gamma ,Z\gamma ,ZZ$ in SM and MSSM
• Parton Distributions
• Particle Dark Matter Physics: An Update
• Supersymmetric virtual effects in heavy quark pair production at LHC
• Neutralino pair production at CERN LHC
• Neutralino-neutralino annihilation to photon and gluon pairs in MSSM models
• SUSY dark matter --A collider Physicist's Perspective--
• Summary of the Activities of the Working Group I on High Energy and Collider Physics
• Neutralino pair production in a $\gamma \gamma$ Collider
• Higgs and SUSY Searches at LHC : An Overview
• Measuring the MSSM Lagrangean
• The LHC / LC Study Group and the Snowmass Points and Slopes
• Interplay between the LHC and a Linear Collider in Searches for New Physics

Cited by in corpus (5)

• Supersymmetric Monojets at the Large Hadron Collider
• Addendum to "Helicity conservation in gauge boson scattering at high energy"
• Distinguishing between MSSM and NMSSM by combined LHC and ILC analyses
• Single Neutralino Production at the LHC
• Neutralino-neutralino annihilation to gammaZ in MSSM