Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC

G. Aad...[et al.]; Mogens Dam; John Renner Hansen; Jørgen Beck Hansen; Jørn Dines Hansen; Peter Henrik Hansen; Morten Dam Jørgensen; Esben Bryndt Klinkby; Troels Christian Petersen; Stefania Xella; Thomas Høvring Kittelmann; Nele Maria Philomena Boelaert

doi:10.1016/j.physletb.2011.05.010

Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC

G. Aad...[et al.], Mogens Dam, John Renner Hansen, Jørgen Beck Hansen, Jørn Dines Hansen, Peter Henrik Hansen, Morten Dam Jørgensen, Esben Bryndt Klinkby, Troels Christian Petersen, Stefania Xella, Thomas Høvring Kittelmann, Nele Maria Philomena Boelaert

53 Citations (Scopus)

Abstract

Hitherto unobserved long-lived massive particles with electric and/or colour charge are predicted by a range of theories which extend the Standard Model. In this Letter a search is performed at the ATLAS experiment for slow-moving charged particles produced in proton–proton collisions at 7 TeV centre-of-mass energy at the LHC, using a data-set corresponding to an integrated luminosity of 34 pb⁻¹. No deviations from Standard Model expectations are found. This result is interpreted in a framework of supersymmetry models in which coloured sparticles can hadronise into long-lived bound hadronic states, termed R-hadrons, and 95% CL limits are set on the production cross-sections of squarks and gluinos. The influence of R-hadron interactions in matter was studied using a number of different models, and lower mass limits for stable sbottoms and stops are found to be 294 and 309 GeV respectively. The lower mass limit for a stable gluino lies in the range from 562 to 586 GeV depending on the model assumed. Each of these constraints is the most stringent to date.

Original language	English
Journal	Physics Letters B
Volume	701
Issue number	1
Pages (from-to)	1-19
Number of pages	19
ISSN	0370-2693
DOIs	https://doi.org/10.1016/j.physletb.2011.05.010
Publication status	Published - 27 Jun 2011

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10.1016/j.physletb.2011.05.010

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title = "Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC",

abstract = "Hitherto unobserved long-lived massive particles with electric and/or colour charge are predicted by a range of theories which extend the Standard Model. In this Letter a search is performed at the ATLAS experiment for slow-moving charged particles produced in proton–proton collisions at 7 TeV centre-of-mass energy at the LHC, using a data-set corresponding to an integrated luminosity of 34 pb−1. No deviations from Standard Model expectations are found. This result is interpreted in a framework of supersymmetry models in which coloured sparticles can hadronise into long-lived bound hadronic states, termed R-hadrons, and 95% CL limits are set on the production cross-sections of squarks and gluinos. The influence of R-hadron interactions in matter was studied using a number of different models, and lower mass limits for stable sbottoms and stops are found to be 294 and 309 GeV respectively. The lower mass limit for a stable gluino lies in the range from 562 to 586 GeV depending on the model assumed. Each of these constraints is the most stringent to date.",

author = "{Aad...[et al.]}, G. and Mogens Dam and Hansen, {John Renner} and Hansen, {J{\o}rgen Beck} and Hansen, {J{\o}rn Dines} and Hansen, {Peter Henrik} and J{\o}rgensen, {Morten Dam} and Klinkby, {Esben Bryndt} and Petersen, {Troels Christian} and Stefania Xella and Kittelmann, {Thomas H{\o}vring} and Boelaert, {Nele Maria Philomena}",

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T1 - Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC

AU - Aad...[et al.], G.

AU - Dam, Mogens

AU - Hansen, John Renner

AU - Hansen, Jørgen Beck

AU - Hansen, Jørn Dines

AU - Hansen, Peter Henrik

AU - Jørgensen, Morten Dam

AU - Klinkby, Esben Bryndt

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Kittelmann, Thomas Høvring

AU - Boelaert, Nele Maria Philomena

PY - 2011/6/27

Y1 - 2011/6/27

N2 - Hitherto unobserved long-lived massive particles with electric and/or colour charge are predicted by a range of theories which extend the Standard Model. In this Letter a search is performed at the ATLAS experiment for slow-moving charged particles produced in proton–proton collisions at 7 TeV centre-of-mass energy at the LHC, using a data-set corresponding to an integrated luminosity of 34 pb−1. No deviations from Standard Model expectations are found. This result is interpreted in a framework of supersymmetry models in which coloured sparticles can hadronise into long-lived bound hadronic states, termed R-hadrons, and 95% CL limits are set on the production cross-sections of squarks and gluinos. The influence of R-hadron interactions in matter was studied using a number of different models, and lower mass limits for stable sbottoms and stops are found to be 294 and 309 GeV respectively. The lower mass limit for a stable gluino lies in the range from 562 to 586 GeV depending on the model assumed. Each of these constraints is the most stringent to date.

AB - Hitherto unobserved long-lived massive particles with electric and/or colour charge are predicted by a range of theories which extend the Standard Model. In this Letter a search is performed at the ATLAS experiment for slow-moving charged particles produced in proton–proton collisions at 7 TeV centre-of-mass energy at the LHC, using a data-set corresponding to an integrated luminosity of 34 pb−1. No deviations from Standard Model expectations are found. This result is interpreted in a framework of supersymmetry models in which coloured sparticles can hadronise into long-lived bound hadronic states, termed R-hadrons, and 95% CL limits are set on the production cross-sections of squarks and gluinos. The influence of R-hadron interactions in matter was studied using a number of different models, and lower mass limits for stable sbottoms and stops are found to be 294 and 309 GeV respectively. The lower mass limit for a stable gluino lies in the range from 562 to 586 GeV depending on the model assumed. Each of these constraints is the most stringent to date.

U2 - 10.1016/j.physletb.2011.05.010

DO - 10.1016/j.physletb.2011.05.010

M3 - Journal article

SN - 0370-2693

VL - 701

SP - 1

EP - 19

JO - Physics Letters B

JF - Physics Letters B

IS - 1

ER -

Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC

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