ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

G. Aad; B. Abbott; J. Abdallah; O. Abdinov; R. Aben; M. Abolins; O. S. AbouZeid; H. Abramowicz; H. Abreu; R. Abreu; Y. Abulaiti; B. S. Acharya; L. Adamczyk; D. L. Adams; J. Adelman; S. Adomeit; T. Adye; A. A. Affolder; T. Agatonovic-Jovin; J. Agricola; J. A. Aguilar-Saavedra; S. P. Ahlen; F. Ahmadov; G. Aielli; H. Akerstedt; T. P. A. Åkesson; A. V. Akimov; G. L. Alberghi; J. Albert; S. Albrand; M. J. Alconada Verzini; M. Aleksa; I. N. Aleksandrov; C. Alexa; G. Alexander; T. Alexopoulos; M. Alhroob; G. Alimonti; L. Alio; J. Alison; S. P. Alkire; B. M. M. Allbrooke; P. P. Allport; A. Aloisio; Alejandro Alonso Diaz; Geert-Jan Besjes; Mogens Dam; Gorm Aske Gram Krohn Galster; Jørgen Beck Hansen; Jørn Dines Hansen; Peter Henrik Hansen; Morten Dam Jørgensen; Ask Emil Løvschall-Jensen; James William Monk; Simon Stark Mortensen; Lars Egholm Pedersen; Troels Christian Petersen; Almut Maria Pingel; Graig Wiglesworth; Stefania Xella

doi:10.1140/epjc/s10052-015-3726-9

ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

G. Aad, B. Abbott, J. Abdallah, O. Abdinov, R. Aben, M. Abolins, O. S. AbouZeid, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti, B. S. Acharya, L. Adamczyk, D. L. Adams, J. Adelman, S. Adomeit, T. Adye, A. A. Affolder, T. Agatonovic-Jovin, J. AgricolaJ. A. Aguilar-Saavedra, S. P. Ahlen, F. Ahmadov, G. Aielli, H. Akerstedt, T. P. A. Åkesson, A. V. Akimov, G. L. Alberghi, J. Albert, S. Albrand, M. J. Alconada Verzini, M. Aleksa, I. N. Aleksandrov, C. Alexa, G. Alexander, T. Alexopoulos, M. Alhroob, G. Alimonti, L. Alio, J. Alison, S. P. Alkire, B. M. M. Allbrooke, P. P. Allport, A. Aloisio, Alejandro Alonso Diaz, Geert-Jan Besjes, Mogens Dam, Gorm Aske Gram Krohn Galster, Jørgen Beck Hansen, Jørn Dines Hansen, Peter Henrik Hansen, Morten Dam Jørgensen, Ask Emil Løvschall-Jensen, James William Monk, Simon Stark Mortensen, Lars Egholm Pedersen, Troels Christian Petersen, Almut Maria Pingel, Graig Wiglesworth, Stefania Xella

Experimental Particle Physics

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Abstract

This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton–proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb⁻¹of collisions at a centre-of-mass energy of √s = 8 TeV, although in some case an additional 4.7 fb⁻¹of collision data at √s = 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.

Original language	English
Article number	510
Journal	The European Physical Journal C: Particles and Fields
Volume	75
Number of pages	48
ISSN	1434-6044
DOIs	https://doi.org/10.1140/epjc/s10052-015-3726-9
Publication status	Published - 1 Oct 2015

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Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., Affolder, A. A., Agatonovic-Jovin, T., ... Xella, S. (2015). ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider. The European Physical Journal C: Particles and Fields, 75, Article 510. https://doi.org/10.1140/epjc/s10052-015-3726-9

Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Aben, R, Abolins, M, AbouZeid, OS, Abramowicz, H, Abreu, H, Abreu, R, Abulaiti, Y, Acharya, BS, Adamczyk, L, Adams, DL, Adelman, J, Adomeit, S, Adye, T, Affolder, AA, Agatonovic-Jovin, T, Agricola, J, Aguilar-Saavedra, JA, Ahlen, SP, Ahmadov, F, Aielli, G, Akerstedt, H, Åkesson, TPA, Akimov, AV, Alberghi, GL, Albert, J, Albrand, S, Alconada Verzini, MJ, Aleksa, M, Aleksandrov, IN, Alexa, C, Alexander, G, Alexopoulos, T, Alhroob, M, Alimonti, G, Alio, L, Alison, J, Alkire, SP, Allbrooke, BMM, Allport, PP, Aloisio, A, Alonso Diaz, A, Besjes, G-J, Dam, M, Galster, GAGK, Hansen, JB , Hansen, JD , Hansen, PH, Jørgensen, MD, Løvschall-Jensen, AE, Monk, JW, Mortensen, SS, Pedersen, LE, Petersen, TC, Pingel, AM, Wiglesworth, G & Xella, S 2015, 'ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider', The European Physical Journal C: Particles and Fields, vol. 75, 510. https://doi.org/10.1140/epjc/s10052-015-3726-9

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title = "ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider",

abstract = "This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton–proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb−1of collisions at a centre-of-mass energy of √s = 8 TeV, although in some case an additional 4.7 fb−1of collision data at √s = 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.",

author = "G. Aad and B. Abbott and J. Abdallah and O. Abdinov and R. Aben and M. Abolins and AbouZeid, {O. S.} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, {B. S.} and L. Adamczyk and Adams, {D. L.} and J. Adelman and S. Adomeit and T. Adye and Affolder, {A. A.} and T. Agatonovic-Jovin and J. Agricola and Aguilar-Saavedra, {J. A.} and Ahlen, {S. P.} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, {T. P. A.} and Akimov, {A. V.} and Alberghi, {G. L.} and J. Albert and S. Albrand and {Alconada Verzini}, {M. J.} and M. Aleksa and Aleksandrov, {I. N.} and C. Alexa and G. Alexander and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Alkire, {S. P.} and Allbrooke, {B. M. M.} and Allport, {P. P.} and A. Aloisio and {Alonso Diaz}, Alejandro and Geert-Jan Besjes and Mogens Dam and Galster, {Gorm Aske Gram Krohn} and Hansen, {J{\o}rgen Beck} and Hansen, {J{\o}rn Dines} and Hansen, {Peter Henrik} and J{\o}rgensen, {Morten Dam} and L{\o}vschall-Jensen, {Ask Emil} and Monk, {James William} and Mortensen, {Simon Stark} and Pedersen, {Lars Egholm} and Petersen, {Troels Christian} and Pingel, {Almut Maria} and Graig Wiglesworth and Stefania Xella",

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doi = "10.1140/epjc/s10052-015-3726-9",

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journal = "The European Physical Journal C: Particles and Fields",

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TY - JOUR

T1 - ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdinov, O.

AU - Aben, R.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Agatonovic-Jovin, T.

AU - Agricola, J.

AU - Aguilar-Saavedra, J. A.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P. A.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Alkire, S. P.

AU - Allbrooke, B. M. M.

AU - Allport, P. P.

AU - Aloisio, A.

AU - Alonso Diaz, Alejandro

AU - Besjes, Geert-Jan

AU - Dam, Mogens

AU - Galster, Gorm Aske Gram Krohn

AU - Hansen, Jørgen Beck

AU - Hansen, Jørn Dines

AU - Hansen, Peter Henrik

AU - Jørgensen, Morten Dam

AU - Løvschall-Jensen, Ask Emil

AU - Monk, James William

AU - Mortensen, Simon Stark

AU - Pedersen, Lars Egholm

AU - Petersen, Troels Christian

AU - Pingel, Almut Maria

AU - Wiglesworth, Graig

AU - Xella, Stefania

PY - 2015/10/1

Y1 - 2015/10/1

N2 - This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton–proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb−1of collisions at a centre-of-mass energy of √s = 8 TeV, although in some case an additional 4.7 fb−1of collision data at √s = 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.

AB - This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton–proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb−1of collisions at a centre-of-mass energy of √s = 8 TeV, although in some case an additional 4.7 fb−1of collision data at √s = 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models.

U2 - 10.1140/epjc/s10052-015-3726-9

DO - 10.1140/epjc/s10052-015-3726-9

M3 - Journal article

C2 - 26549981

SN - 1434-6044

VL - 75

JO - The European Physical Journal C: Particles and Fields

JF - The European Physical Journal C: Particles and Fields

M1 - 510

ER -

ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

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