Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV
Abstract A search is presented for supersymmetric partners of the top quark (top squarks) in final states with two oppositely charged leptons (electrons or muons), jets identified as originating from $${\text {b...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Berlin Heidelberg
2021
|
| Online Access: | https://hdl.handle.net/1721.1/132079 |
| _version_ | 1826195882504093696 |
|---|---|
| author | Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Valle, A. E D Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. Schöfbeck, R. Spanring, M. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Valle, A. E D Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. Schöfbeck, R. Spanring, M. |
| author_sort | Sirunyan, A. M |
| collection | MIT |
| description | Abstract
A search is presented for supersymmetric partners of the top quark (top squarks) in final states with two oppositely charged leptons (electrons or muons), jets identified as originating from
$${\text {b}}$$
b
quarks, and missing transverse momentum. The search uses data from proton-proton collisions at
$$\sqrt{s}=13\,\text {TeV} $$
s
=
13
TeV
collected with the CMS detector, corresponding to an integrated luminosity of 137
$$\,{\text {fb}}^{-1}$$
fb
-
1
. Hypothetical signal events are efficiently separated from the dominant top quark pair production background with requirements on the significance of the missing transverse momentum and on transverse mass variables. No significant deviation is observed from the expected background. Exclusion limits are set in the context of simplified supersymmetric models with pair-produced lightest top squarks. For top squarks decaying exclusively to a top quark and a lightest neutralino, lower limits are placed at
$$95\%$$
95
%
confidence level on the masses of the top squark and the neutralino up to 925 and 450
$$\,\text {GeV}$$
GeV
, respectively. If the decay proceeds via an intermediate chargino, the corresponding lower limits on the mass of the lightest top squark are set up to 850
$$\,\text {GeV}$$
GeV
for neutralino masses below 420
$$\,\text {GeV}$$
GeV
. For top squarks undergoing a cascade decay through charginos and sleptons, the mass limits reach up to 1.4
$$\,\text {TeV}$$
TeV
and 900
$$\,\text {GeV}$$
GeV
respectively for the top squark and the lightest neutralino. |
| first_indexed | 2024-09-23T10:17:15Z |
| format | Article |
| id | mit-1721.1/132079 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:17:15Z |
| publishDate | 2021 |
| publisher | Springer Berlin Heidelberg |
| record_format | dspace |
| spelling | mit-1721.1/1320792024-01-02T15:31:01Z Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Valle, A. E D Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. Schöfbeck, R. Spanring, M. Massachusetts Institute of Technology. Department of Physics Abstract A search is presented for supersymmetric partners of the top quark (top squarks) in final states with two oppositely charged leptons (electrons or muons), jets identified as originating from $${\text {b}}$$ b quarks, and missing transverse momentum. The search uses data from proton-proton collisions at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV collected with the CMS detector, corresponding to an integrated luminosity of 137 $$\,{\text {fb}}^{-1}$$ fb - 1 . Hypothetical signal events are efficiently separated from the dominant top quark pair production background with requirements on the significance of the missing transverse momentum and on transverse mass variables. No significant deviation is observed from the expected background. Exclusion limits are set in the context of simplified supersymmetric models with pair-produced lightest top squarks. For top squarks decaying exclusively to a top quark and a lightest neutralino, lower limits are placed at $$95\%$$ 95 % confidence level on the masses of the top squark and the neutralino up to 925 and 450 $$\,\text {GeV}$$ GeV , respectively. If the decay proceeds via an intermediate chargino, the corresponding lower limits on the mass of the lightest top squark are set up to 850 $$\,\text {GeV}$$ GeV for neutralino masses below 420 $$\,\text {GeV}$$ GeV . For top squarks undergoing a cascade decay through charginos and sleptons, the mass limits reach up to 1.4 $$\,\text {TeV}$$ TeV and 900 $$\,\text {GeV}$$ GeV respectively for the top squark and the lightest neutralino. 2021-09-20T17:41:49Z 2021-09-20T17:41:49Z 2021-01-05 2021-03-28T03:20:26Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/132079 The European Physical Journal C. 2021 Jan 05;81(1):3 PUBLISHER_CC en https://doi.org/10.1140/epjc/s10052-020-08701-5 Creative Commons Attribution https://creativecommons.org/licenses/by/4.0/ CERN for the benefit of the CMS collaboration application/pdf Springer Berlin Heidelberg Springer Berlin Heidelberg |
| spellingShingle | Sirunyan, A. M Tumasyan, A. Adam, W. Ambrogi, F. Bergauer, T. Dragicevic, M. Erö, J. Valle, A. E D Frühwirth, R. Jeitler, M. Krammer, N. Lechner, L. Liko, D. Madlener, T. Mikulec, I. Pitters, F. M Rad, N. Schieck, J. Schöfbeck, R. Spanring, M. Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV |
| title | Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV |
| title_full | Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV |
| title_fullStr | Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV |
| title_full_unstemmed | Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV |
| title_short | Search for top squark pair production using dilepton final states in $${\text {p}}{\text {p}}$$ pp collision data collected at $$\sqrt{s}=13\,\text {TeV} $$ s = 13 TeV |
| title_sort | search for top squark pair production using dilepton final states in text p text p pp collision data collected at sqrt s 13 text tev s 13 tev |
| url | https://hdl.handle.net/1721.1/132079 |
| work_keys_str_mv | AT sirunyanam searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT tumasyana searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT adamw searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT ambrogif searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT bergauert searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT dragicevicm searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT eroj searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT valleaed searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT fruhwirthr searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT jeitlerm searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT krammern searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT lechnerl searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT likod searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT madlenert searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT mikuleci searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT pittersfm searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT radn searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT schieckj searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT schofbeckr searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev AT spanringm searchfortopsquarkpairproductionusingdileptonfinalstatesintextptextpppcollisiondatacollectedatsqrts13texttevs13tev |