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

Abstract

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.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
917106
Report Number(s):
FERMILAB-PUB-07-100-E
Journal ID: ISSN 0031-9007; PRLTAO; arXiv eprint number arXiv:0705.0306; TRN: US0804468
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.Lett.99:131801,2007
Additional Journal Information:
Journal Volume: 99; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCELERATORS; FERMILAB TEVATRON; GLUONS; IONIZATION; PHYSICS; PRODUCTION; STANDARD MODEL; SUPERSYMMETRY; Experiment-HEP

Citation Formats

Abazov, V M, Abbott, B, Abolins, M, Acharya, B S, Adams, M, Adams, T, Aguilo, E, Ahn, S H, Ahsan, M, Alexeev, G D, Alkhazov, G, and /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Hefei, CUST /Andes U., Bogota /Charles U. Search for stopped gluinos from p-anti-p collisions at s**(1/2) = 1.96-TeV. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.99.131801.
Abazov, V M, Abbott, B, Abolins, M, Acharya, B S, Adams, M, Adams, T, Aguilo, E, Ahn, S H, Ahsan, M, Alexeev, G D, Alkhazov, G, & /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Hefei, CUST /Andes U., Bogota /Charles U. Search for stopped gluinos from p-anti-p collisions at s**(1/2) = 1.96-TeV. United States. https://doi.org/10.1103/PhysRevLett.99.131801
Abazov, V M, Abbott, B, Abolins, M, Acharya, B S, Adams, M, Adams, T, Aguilo, E, Ahn, S H, Ahsan, M, Alexeev, G D, Alkhazov, G, and /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Hefei, CUST /Andes U., Bogota /Charles U. 2007. "Search for stopped gluinos from p-anti-p collisions at s**(1/2) = 1.96-TeV". United States. https://doi.org/10.1103/PhysRevLett.99.131801. https://www.osti.gov/servlets/purl/917106.
@article{osti_917106,
title = {Search for stopped gluinos from p-anti-p collisions at s**(1/2) = 1.96-TeV},
author = {Abazov, V M and Abbott, B and Abolins, M and Acharya, B S and Adams, M and Adams, T and Aguilo, E and Ahn, S H and Ahsan, M and Alexeev, G D and Alkhazov, G and /Buenos Aires U. /Rio de Janeiro, CBPF /Rio de Janeiro State U. /Sao Paulo, IFT /Alberta U. /Simon Fraser U. /York U., Canada /McGill U. /Hefei, CUST /Andes U., Bogota /Charles U.},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.99.131801},
url = {https://www.osti.gov/biblio/917106}, journal = {Phys.Rev.Lett.99:131801,2007},
issn = {0031-9007},
number = ,
volume = 99,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}