Search for stopped gluinos from p-anti-p collisions at s**(1/2) = 1.96-TeV

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Long-lived, heavy particles are predicted in a number of models beyond the standard model of particle physics. We present the first direct search for such particles' decays, occurring up to 100 h after their production and not synchronized with an accelerator bunch crossing. We apply the analysis to the gluino ({tilde g}), predicted in split supersymmetry, which after hadronization can become charged and lose enough momentum through ionization to come to rest in dense particle detectors. Approximately 410 pb{sup -1} of p{bar p} collisions at sqrt(s)=1.96 TeV collected with the D0 detector during Run II of the Fermilab Tevatron collider ... continued below

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7 pages

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Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T. et al. May 1, 2007.

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Long-lived, heavy particles are predicted in a number of models beyond the standard model of particle physics. We present the first direct search for such particles' decays, occurring up to 100 h after their production and not synchronized with an accelerator bunch crossing. We apply the analysis to the gluino ({tilde g}), predicted in split supersymmetry, which after hadronization can become charged and lose enough momentum through ionization to come to rest in dense particle detectors. Approximately 410 pb{sup -1} of p{bar p} collisions at sqrt(s)=1.96 TeV collected with the D0 detector during Run II of the Fermilab Tevatron collider are analyzed in search of such 'stopped gluinos' decaying into a gluon and a neutralino ({tilde {chi}}{sub 1}{sup 0}). Limits are placed on the (gluino cross section)x(probability to stop)x[BR({tilde g}{yields}g {tilde {chi}}{sub 1}{sup 0<})] as a function of the gluino and {tilde {chi}}{sub 1}{sup 0<} masses, for gluino lifetimes from 30 {micro}s-100 h.

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7 pages

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  • Journal Name: Phys.Rev.Lett.99:131801,2007; Journal Volume: 99

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  • Report No.: FERMILAB-PUB-07-100-E
  • Grant Number: AC02-07CH11359
  • DOI: 10.1103/PhysRevLett.99.131801 | External Link
  • Office of Scientific & Technical Information Report Number: 917106
  • Archival Resource Key: ark:/67531/metadc881820

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • May 1, 2007

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 7, 2016, 9:04 p.m.

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Abazov, V.M.; Abbott, B.; Abolins, M.; Acharya, B.S.; Adams, M.; Adams, T. et al. Search for stopped gluinos from p-anti-p collisions at s**(1/2) = 1.96-TeV, article, May 1, 2007; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc881820/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.