# Multidimensional mSUGRA likelihood maps

## Abstract

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.

- Authors:

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

- Publication Date:

- OSTI Identifier:
- 20774642

- Resource Type:
- Journal Article

- Resource Relation:
- Journal Name: Physical Review. D, Particles Fields; Journal Volume: 73; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevD.73.015013; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 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

### Citation Formats

```
Allanach, B.C., Lester, C.G., and Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE.
```*Multidimensional mSUGRA likelihood maps*. United States: N. p., 2006.
Web. doi:10.1103/PhysRevD.73.015013.

```
Allanach, B.C., Lester, C.G., & Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE.
```*Multidimensional mSUGRA likelihood maps*. United States. doi:10.1103/PhysRevD.73.015013.

```
Allanach, B.C., Lester, C.G., and Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE. Sun .
"Multidimensional mSUGRA likelihood maps". United States.
doi:10.1103/PhysRevD.73.015013.
```

```
@article{osti_20774642,
```

title = {Multidimensional mSUGRA likelihood maps},

author = {Allanach, B.C. and Lester, C.G. and Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE},

abstractNote = {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.},

doi = {10.1103/PhysRevD.73.015013},

journal = {Physical Review. D, Particles Fields},

number = 1,

volume = 73,

place = {United States},

year = {Sun Jan 01 00:00:00 EST 2006},

month = {Sun Jan 01 00:00:00 EST 2006}

}