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Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in s√=8 TeV pp collisions with the ATLAS detector

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Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in s√=8 TeV pp collisions with the ATLAS detector. / The ATLAS collaboration.
In: Journal of High Energy Physics, Vol. 2013, No. 10, 189, 29.10.2013.

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@article{48484c8083e94a50b7b248a1a2010634,
title = "Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in s√=8 TeV pp collisions with the ATLAS detector",
abstract = "The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb−1 of pp collisions at s√=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ( b˜1 and t˜1 respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95 % confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The b˜1 is assumed to decay via b˜1→b∼0χ1 and the t˜1 via t˜1→b∼±χ1 , with undetectable products of the subsequent decay of the ∼±χ1 due to the small mass splitting between the ∼±χ1 and the ∼0χ1 .",
keywords = "Hadron-Hadron Scattering, Supersymmetry",
author = "Lee Allison and Adam Barton and Guennadi Borissov and Eva Bouhova-Thacker and Alexandre Chilingarov and William Dearnaley and Harald Fox and Kathryn Grimm and Robert Henderson and Gareth Hughes and Jones, {Roger William Lewis} and Vakhtang Kartvelishvili and Robin Long and Peter Love and Harvey Maddocks and Maria Smizanska and James Walder and {The ATLAS collaboration}",
note = "This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.",
year = "2013",
month = oct,
day = "29",
doi = "10.1007/JHEP10(2013)189",
language = "English",
volume = "2013",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer-Verlag",
number = "10",

}

RIS

TY - JOUR

T1 - Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in s√=8 TeV pp collisions with the ATLAS detector

AU - Allison, Lee

AU - Barton, Adam

AU - Borissov, Guennadi

AU - Bouhova-Thacker, Eva

AU - Chilingarov, Alexandre

AU - Dearnaley, William

AU - Fox, Harald

AU - Grimm, Kathryn

AU - Henderson, Robert

AU - Hughes, Gareth

AU - Jones, Roger William Lewis

AU - Kartvelishvili, Vakhtang

AU - Long, Robin

AU - Love, Peter

AU - Maddocks, Harvey

AU - Smizanska, Maria

AU - Walder, James

AU - The ATLAS collaboration

N1 - This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

PY - 2013/10/29

Y1 - 2013/10/29

N2 - The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb−1 of pp collisions at s√=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ( b˜1 and t˜1 respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95 % confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The b˜1 is assumed to decay via b˜1→b∼0χ1 and the t˜1 via t˜1→b∼±χ1 , with undetectable products of the subsequent decay of the ∼±χ1 due to the small mass splitting between the ∼±χ1 and the ∼0χ1 .

AB - The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb−1 of pp collisions at s√=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ( b˜1 and t˜1 respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95 % confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The b˜1 is assumed to decay via b˜1→b∼0χ1 and the t˜1 via t˜1→b∼±χ1 , with undetectable products of the subsequent decay of the ∼±χ1 due to the small mass splitting between the ∼±χ1 and the ∼0χ1 .

KW - Hadron-Hadron Scattering

KW - Supersymmetry

U2 - 10.1007/JHEP10(2013)189

DO - 10.1007/JHEP10(2013)189

M3 - Journal article

VL - 2013

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 10

M1 - 189

ER -