Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb-1 of proton-proton collision data at root s=13 Te V

M. Aaboud; G. Aad; B. Abbott; DC Abbott; O. Abdinov; B Abeloos; DK Abhayasinghe; S.H. Abidi; Ossama Sherif Alexander AbouZeid; NL Abraham; H. Abramowicz; H. Abreu; Y. Abulaiti; B.S. Acharya; Sosuke Adachi; Luise Adam; L. Adamczyk; L. Adamek; J. Adelman; M. Adersberger; A. Adiguzel; T. Adye; A. A. Affolder; Y.  Afik; C. Agheorghiesei; J. A. Aguilar-Saavedra; F. Ahmadov; G. Aielli; Milena Bajic; Jørgen Beck Hansen; Peter Henrik Hansen; Flavia de Almeida Dias; Gorm Aske Gram Krohn Galster; Geert-Jan Besjes; Mogens Dam; Graig Wiglesworth; Simon Holm Stark; Troels Christian Petersen; Jørn Dines Hansen; James William Monk; hqz214 hqz214; Alejandro Alonso Diaz; Stefania Xella

doi:10.1103/PhysRevD.99.092007

Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb^-1 of proton-proton collision data at root s=13 Te V

M. Aaboud^*, G. Aad, B. Abbott, DC Abbott, O. Abdinov, B Abeloos, DK Abhayasinghe, S.H. Abidi, Ossama Sherif Alexander AbouZeid, NL Abraham, H. Abramowicz, H. Abreu, Y. Abulaiti, B.S. Acharya, Sosuke Adachi, Luise Adam, L. Adamczyk, L. Adamek, J. Adelman, M. AdersbergerA. Adiguzel, T. Adye, A. A. Affolder, Y. Afik, C. Agheorghiesei, J. A. Aguilar-Saavedra, F. Ahmadov, G. Aielli, Milena Bajic, Jørgen Beck Hansen, Peter Henrik Hansen, Flavia de Almeida Dias, Gorm Aske Gram Krohn Galster, Geert-Jan Besjes, Mogens Dam, Graig Wiglesworth, Simon Holm Stark, Troels Christian Petersen, Jørn Dines Hansen, James William Monk, hqz214 hqz214, Alejandro Alonso Diaz, Stefania Xella

^*Corresponding author for this work

Experimental Particle Physics

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Abstract

A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb-1 of proton-proton collisions at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. Multiple search strategies for a wide range of lifetimes, corresponding to path lengths of a few meters, are defined as model independently as possible, by referencing several representative physics cases that yield long-lived particles within supersymmetric models, such as gluinos/squarks (R-hadrons), charginos and staus. No significant deviations from the expected Standard Model background are observed. Upper limits at 95% confidence level are provided on the production cross sections of long-lived R-hadrons as well as directly pair-produced staus and charginos. These results translate into lower limits on the masses of long-lived gluino, sbottom and stop R-hadrons, as well as staus and charginos of 2000, 1250, 1340, 430, and 1090 GeV, respectively.

Original language	English
Article number	092007
Journal	Physical Review D
Volume	99
Number of pages	34
ISSN	2470-0010
DOIs	https://doi.org/10.1103/PhysRevD.99.092007
Publication status	Published - 28 May 2019

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Aaboud, M., Aad, G., Abbott, B., Abbott, DC., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adam, L., Adamczyk, L., Adamek, L., Adelman, J., ... Xella, S. (2019). Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb^-1 of proton-proton collision data at root s=13 Te V. Physical Review D, 99, Article 092007. https://doi.org/10.1103/PhysRevD.99.092007

Aaboud, M, Aad, G, Abbott, B, Abbott, DC, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OSA, Abraham, NL, Abramowicz, H, Abreu, H, Abulaiti, Y, Acharya, BS, Adachi, S, Adam, L, Adamczyk, L, Adamek, L, Adelman, J, Adersberger, M, Adiguzel, A, Adye, T, Affolder, AA, Afik, Y, Agheorghiesei, C, Aguilar-Saavedra, JA, Ahmadov, F, Aielli, G, Bajic, M, Hansen, JB , Hansen, PH, de Almeida Dias, F, Galster, GAGK, Besjes, G-J, Dam, M , Wiglesworth, G, Stark, SH, Petersen, TC , Hansen, JD, Monk, JW, hqz214, H, Alonso Diaz, A & Xella, S 2019, 'Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb^-1 of proton-proton collision data at root s=13 Te V', Physical Review D, vol. 99, 092007. https://doi.org/10.1103/PhysRevD.99.092007

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title = "Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb-1 of proton-proton collision data at root s=13 Te V",

abstract = "A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb-1 of proton-proton collisions at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. Multiple search strategies for a wide range of lifetimes, corresponding to path lengths of a few meters, are defined as model independently as possible, by referencing several representative physics cases that yield long-lived particles within supersymmetric models, such as gluinos/squarks (R-hadrons), charginos and staus. No significant deviations from the expected Standard Model background are observed. Upper limits at 95% confidence level are provided on the production cross sections of long-lived R-hadrons as well as directly pair-produced staus and charginos. These results translate into lower limits on the masses of long-lived gluino, sbottom and stop R-hadrons, as well as staus and charginos of 2000, 1250, 1340, 430, and 1090 GeV, respectively.",

author = "M. Aaboud and G. Aad and B. Abbott and DC Abbott and O. Abdinov and B Abeloos and DK Abhayasinghe and S.H. Abidi and AbouZeid, {Ossama Sherif Alexander} and NL Abraham and H. Abramowicz and H. Abreu and Y. Abulaiti and B.S. Acharya and Sosuke Adachi and Luise Adam and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and T. Adye and Affolder, {A. A.} and Y. Afik and C. Agheorghiesei and Aguilar-Saavedra, {J. A.} and F. Ahmadov and G. Aielli and Milena Bajic and Hansen, {J{\o}rgen Beck} and Hansen, {Peter Henrik} and {de Almeida Dias}, Flavia and Galster, {Gorm Aske Gram Krohn} and Geert-Jan Besjes and Mogens Dam and Graig Wiglesworth and Stark, {Simon Holm} and Petersen, {Troels Christian} and Hansen, {J{\o}rn Dines} and Monk, {James William} and hqz214 hqz214 and {Alonso Diaz}, Alejandro and Stefania Xella",

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doi = "10.1103/PhysRevD.99.092007",

language = "English",

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journal = "Physical Review D",

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T1 - Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb-1 of proton-proton collision data at root s=13 Te V

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, DC

AU - Abdinov, O.

AU - Abeloos, B

AU - Abhayasinghe, DK

AU - Abidi, S.H.

AU - AbouZeid, Ossama Sherif Alexander

AU - Abraham, NL

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B.S.

AU - Adachi, Sosuke

AU - Adam, Luise

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Bajic, Milena

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - de Almeida Dias, Flavia

AU - Galster, Gorm Aske Gram Krohn

AU - Besjes, Geert-Jan

AU - Dam, Mogens

AU - Wiglesworth, Graig

AU - Stark, Simon Holm

AU - Petersen, Troels Christian

AU - Hansen, Jørn Dines

AU - Monk, James William

AU - hqz214, hqz214

AU - Alonso Diaz, Alejandro

AU - Xella, Stefania

PY - 2019/5/28

Y1 - 2019/5/28

N2 - A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb-1 of proton-proton collisions at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. Multiple search strategies for a wide range of lifetimes, corresponding to path lengths of a few meters, are defined as model independently as possible, by referencing several representative physics cases that yield long-lived particles within supersymmetric models, such as gluinos/squarks (R-hadrons), charginos and staus. No significant deviations from the expected Standard Model background are observed. Upper limits at 95% confidence level are provided on the production cross sections of long-lived R-hadrons as well as directly pair-produced staus and charginos. These results translate into lower limits on the masses of long-lived gluino, sbottom and stop R-hadrons, as well as staus and charginos of 2000, 1250, 1340, 430, and 1090 GeV, respectively.

AB - A search for heavy charged long-lived particles is performed using a data sample of 36.1 fb-1 of proton-proton collisions at s=13 TeV collected by the ATLAS experiment at the Large Hadron Collider. The search is based on observables related to ionization energy loss and time of flight, which are sensitive to the velocity of heavy charged particles traveling significantly slower than the speed of light. Multiple search strategies for a wide range of lifetimes, corresponding to path lengths of a few meters, are defined as model independently as possible, by referencing several representative physics cases that yield long-lived particles within supersymmetric models, such as gluinos/squarks (R-hadrons), charginos and staus. No significant deviations from the expected Standard Model background are observed. Upper limits at 95% confidence level are provided on the production cross sections of long-lived R-hadrons as well as directly pair-produced staus and charginos. These results translate into lower limits on the masses of long-lived gluino, sbottom and stop R-hadrons, as well as staus and charginos of 2000, 1250, 1340, 430, and 1090 GeV, respectively.

U2 - 10.1103/PhysRevD.99.092007

DO - 10.1103/PhysRevD.99.092007

M3 - Journal article

SN - 2470-0010

VL - 99

JO - Physical Review D

JF - Physical Review D

M1 - 092007

ER -

Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb-1 of proton-proton collision data at root s=13 Te V

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Search for heavy charged long-lived particles in the ATLAS detector in 36.1 fb^-1 of proton-proton collision data at root s=13 Te V