### Abstract

We reinterpret the generic CDF charged massive particle limit to obtain a limit on the mass of a stable or long-lived gluino. Various sources of uncertainty are examined. The R-hadron spectrum and scattering cross sections are modeled based on known lowenergy hadron physics and the resultant uncertainties are quantified and found to be small compared to uncertainties from the scale dependence of the NLO pQCD production cross sections. The largest uncertainty in the limit comes from the unknown squark mass: when the squark - gluino mass splitting is small, we obtain a gluino mass limit of 407 GeV, while in the limit of heavy squarks the gluino mass limit is 397 GeV. For arbitrary (degenerate) squark masses, we obtain a lower limit of 322 GeV on the gluino mass. These limits apply for any gluino lifetime longer than ∼ 30 ns, and are the most stringent limits for such a long-lived or stable gluino.

Original language | English (US) |
---|---|

Article number | 018 |

Journal | Journal of High Energy Physics |

Volume | 2011 |

Issue number | 2 |

DOIs | |

State | Published - 2011 |

### Fingerprint

### Keywords

- Supersymmetry phenomenology

### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Journal of High Energy Physics*,

*2011*(2), [018]. https://doi.org/10.1007/JHEP02(2011)018

**Limit on the mass of a long-lived or stable gluino.** / Farrar, G. R.; Mackeprang, R.; Milstead, D.; Roberts, J. P.

Research output: Contribution to journal › Article

*Journal of High Energy Physics*, vol. 2011, no. 2, 018. https://doi.org/10.1007/JHEP02(2011)018

}

TY - JOUR

T1 - Limit on the mass of a long-lived or stable gluino

AU - Farrar, G. R.

AU - Mackeprang, R.

AU - Milstead, D.

AU - Roberts, J. P.

PY - 2011

Y1 - 2011

N2 - We reinterpret the generic CDF charged massive particle limit to obtain a limit on the mass of a stable or long-lived gluino. Various sources of uncertainty are examined. The R-hadron spectrum and scattering cross sections are modeled based on known lowenergy hadron physics and the resultant uncertainties are quantified and found to be small compared to uncertainties from the scale dependence of the NLO pQCD production cross sections. The largest uncertainty in the limit comes from the unknown squark mass: when the squark - gluino mass splitting is small, we obtain a gluino mass limit of 407 GeV, while in the limit of heavy squarks the gluino mass limit is 397 GeV. For arbitrary (degenerate) squark masses, we obtain a lower limit of 322 GeV on the gluino mass. These limits apply for any gluino lifetime longer than ∼ 30 ns, and are the most stringent limits for such a long-lived or stable gluino.

AB - We reinterpret the generic CDF charged massive particle limit to obtain a limit on the mass of a stable or long-lived gluino. Various sources of uncertainty are examined. The R-hadron spectrum and scattering cross sections are modeled based on known lowenergy hadron physics and the resultant uncertainties are quantified and found to be small compared to uncertainties from the scale dependence of the NLO pQCD production cross sections. The largest uncertainty in the limit comes from the unknown squark mass: when the squark - gluino mass splitting is small, we obtain a gluino mass limit of 407 GeV, while in the limit of heavy squarks the gluino mass limit is 397 GeV. For arbitrary (degenerate) squark masses, we obtain a lower limit of 322 GeV on the gluino mass. These limits apply for any gluino lifetime longer than ∼ 30 ns, and are the most stringent limits for such a long-lived or stable gluino.

KW - Supersymmetry phenomenology

UR - http://www.scopus.com/inward/record.url?scp=80053100416&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80053100416&partnerID=8YFLogxK

U2 - 10.1007/JHEP02(2011)018

DO - 10.1007/JHEP02(2011)018

M3 - Article

VL - 2011

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

IS - 2

M1 - 018

ER -