Multidimensional mSUGRA likelihood maps

Journal Article · Sun Jan 01 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.015013· OSTI ID:20774642

Allanach, B C; Lester, C G ^[1]

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1. DAMTP, CMS, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom)

We calculate the likelihood map in the full 7-dimensional parameter space of the minimal supersymmetric standard model assuming universal boundary conditions on the supersymmetry breaking terms. Simultaneous variations of m{sub 0}, A{sub 0}, M{sub 1/2}, tan{beta}, m{sub t}, m{sub b} and {alpha}{sub s}(M{sub Z}) are applied using a Markov chain Monte Carlo algorithm. We use measurements of b{yields}s{gamma}, (g-2){sub {mu}} and {omega}{sub DM}h{sup 2} in order to constrain the model. We present likelihood distributions for some of the sparticle masses, for the branching ratio of B{sub s}{sup 0}{yields}{mu}{sup +}{mu}{sup -} and for m{sub {tau}}{sub -tilde}-m{sub {chi}{sub 1}{sup 0}}. An upper limit of 2x10{sup -8} on this branching ratio might be achieved at the Tevatron, and would rule out 29% of the currently allowed likelihood. If one allows for non-thermal-neutralino components of dark matter, this fraction becomes 35%. The mass ordering allows the important cascade decay q-tilde{sub L}{yields}{chi}{sub 2}{sup 0}{yields}l-tilde{sub R}{yields}{chi}{sub 1}{sup 0} with a likelihood of 24{+-}4%. The stop-coannihilation region is highly disfavored, whereas the light Higgs region is marginally disfavored.

• OSTI ID: 20774642
• Journal Information: Physical Review. D, Particles Fields, Vol. 73, Issue 1; Other Information: DOI: 10.1103/PhysRevD.73.015013; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALGORITHMS
B S MESONS
BOUNDARY CONDITIONS
BRANCHING RATIO
DISTRIBUTION
FERMILAB TEVATRON
HIGGS BOSONS
HIGGS MODEL
LEPTONIC DECAY
MAGNETIC MOMENTS
MARKOV PROCESS
MONTE CARLO METHOD
MUONS MINUS
MUONS PLUS
NONLUMINOUS MATTER
REST MASS
SPARTICLES
STANDARD MODEL
SUPERGRAVITY
SUPERSYMMETRY
SYMMETRY BREAKING