CERN Accelerating science

Article
Report number	hep-ph/0210205 ; CERN-TH-2002-238 ; TPI-MINN-2002-42 ; UMN-TH-2113
Title	Exploration of the MSSM with Non-Universal Higgs Masses
Author(s)	Ellis, Jonathan Richard (CERN) ; Falk, T ; Olive, Keith A ; Santoso, Y
Affiliation	(TPI, U of Minnesota)
Publication	2003
Imprint	15 Oct 2002
Number of pages	92
In:	Nucl. Phys. B 652 (2003) 259-347
DOI	10.1016/S0550-3213(02)01144-6
Subject category	Particle Physics - Phenomenology
Abstract	We explore the parameter space of the minimal supersymmetric extension of the Standard Model (MSSM), allowing the soft supersymmetry-breaking masses of the Higgs multiplets, m_{1,2}, to be non-universal (NUHM). Compared with the constrained MSSM (CMSSM) in which m_{1,2} are required to be equal to the soft supersymmetry-breaking masses m_0 of the squark and slepton masses, the Higgs mixing parameter mu and the pseudoscalar Higgs mass m_A, which are calculated in the CMSSM, are free in the NUHM model. We incorporate accelerator and dark matter constraints in determining allowed regions of the (mu, m_A), (mu, M_2) and (m_{1/2}, m_0) planes for selected choices of the other NUHM parameters. In the examples studied, we find that the LSP mass cannot be reduced far below its limit in the CMSSM, whereas m_A may be as small as allowed by LEP for large tan \beta. We present in Appendices details of the calculations of neutralino-slepton, chargino-slepton and neutralino-sneutrino coannihilation needed in our exploration of the NUHM.

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