Search for the pair production of light top squarks in the e                         ±                          μ                          ∓                          final state in proton-proton collisions at √s=13 TeV

The CMS Collaboration

doi:10.1007/JHEP03(2019)101

Search for the pair production of light top squarks in the e ^± μ ^∓ final state in proton-proton collisions at √s=13 TeV

The CMS Collaboration

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

A search for the production of a pair of top squarks at the LHC is presented. This search targets a region of parameter space where the kinematics of top squark pair production and top quark pair production are very similar, because of the mass difference between the top squark and the neutralino being close to the top quark mass. The search is performed with 35.9 fb ⁻¹ of proton-proton collisions at a centre-of-mass energy of s=13 TeV, collected by the CMS detector in 2016, using events containing one electron-muon pair with opposite charge. The search is based on a precise estimate of the top quark pair background, and the use of the M _T2 variable, which combines the transverse mass of each lepton and the missing transverse momentum. No excess of events is found over the standard model predictions. Exclusion limits are placed at 95% confidence level on the production of top squarks up to masses of 208 GeV for models with a mass difference between the top squark and the lightest neutralino close to that of the top quark.[Figure not available: see fulltext.].

Original language	English (US)
Article number	101
Journal	Journal of High Energy Physics
Volume	2019
Issue number	3
DOIs	https://doi.org/10.1007/JHEP03(2019)101
State	Published - Mar 1 2019

Funding

Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COL-CIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.A.). Open Access, Copyright CERN, for the benefit of the CMS Collaboration. Article funded by SCOAP3.

Keywords

Hadron-Hadron scattering (experiments)
Supersymmetry
top squark

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP03(2019)101

Cite this

The CMS Collaboration (2019). Search for the pair production of light top squarks in the e ^± μ ^∓ final state in proton-proton collisions at √s=13 TeV Journal of High Energy Physics, 2019(3), Article 101. https://doi.org/10.1007/JHEP03(2019)101

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title = " Search for the pair production of light top squarks in the e ± μ ∓ final state in proton-proton collisions at √s=13 TeV ",

abstract = " A search for the production of a pair of top squarks at the LHC is presented. This search targets a region of parameter space where the kinematics of top squark pair production and top quark pair production are very similar, because of the mass difference between the top squark and the neutralino being close to the top quark mass. The search is performed with 35.9 fb −1 of proton-proton collisions at a centre-of-mass energy of s=13 TeV, collected by the CMS detector in 2016, using events containing one electron-muon pair with opposite charge. The search is based on a precise estimate of the top quark pair background, and the use of the M T2 variable, which combines the transverse mass of each lepton and the missing transverse momentum. No excess of events is found over the standard model predictions. Exclusion limits are placed at 95% confidence level on the production of top squarks up to masses of 208 GeV for models with a mass difference between the top squark and the lightest neutralino close to that of the top quark.[Figure not available: see fulltext.].",

keywords = "Hadron-Hadron scattering (experiments), Supersymmetry, top squark",

author = "{The CMS Collaboration} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and M. Flechl and R. Fr{\"u}hwirth and Ghete, {V. M.} and J. Hrubec and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and W. Waltenberger and J. Wittmann and Wulz, {C. E.} and M. Zarucki and V. Chekhovsky and V. Mossolov and {Suarez Gonzalez}, J. and {De Wolf}, {E. A.} and {Di Croce}, D. and X. Janssen and J. Lauwers and A. Lelek and M. Pieters and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Remortel}, N. and {Abu Zeid}, S. and F. Blekman and J. D{\textquoteright}Hondt and {De Clercq}, J. and K. Deroover and Hahn, {K. A.} and Schmitt, {M. H.} and M. Velasco",

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The CMS Collaboration 2019, ' Search for the pair production of light top squarks in the e ^± μ ^∓ final state in proton-proton collisions at √s=13 TeV ', Journal of High Energy Physics, vol. 2019, no. 3, 101. https://doi.org/10.1007/JHEP03(2019)101

Search for the pair production of light top squarks in the e ^± μ ^∓ final state in proton-proton collisions at √s=13 TeV . / The CMS Collaboration.
In: Journal of High Energy Physics, Vol. 2019, No. 3, 101, 01.03.2019.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Search for the pair production of light top squarks in the e ± μ ∓ final state in proton-proton collisions at √s=13 TeV

AU - The CMS Collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, J.

AU - Lelek, A.

AU - Pieters, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D’Hondt, J.

AU - De Clercq, J.

AU - Deroover, K.

AU - Hahn, K. A.

AU - Schmitt, M. H.

AU - Velasco, M.

PY - 2019/3/1

Y1 - 2019/3/1

N2 - A search for the production of a pair of top squarks at the LHC is presented. This search targets a region of parameter space where the kinematics of top squark pair production and top quark pair production are very similar, because of the mass difference between the top squark and the neutralino being close to the top quark mass. The search is performed with 35.9 fb −1 of proton-proton collisions at a centre-of-mass energy of s=13 TeV, collected by the CMS detector in 2016, using events containing one electron-muon pair with opposite charge. The search is based on a precise estimate of the top quark pair background, and the use of the M T2 variable, which combines the transverse mass of each lepton and the missing transverse momentum. No excess of events is found over the standard model predictions. Exclusion limits are placed at 95% confidence level on the production of top squarks up to masses of 208 GeV for models with a mass difference between the top squark and the lightest neutralino close to that of the top quark.[Figure not available: see fulltext.].

AB - A search for the production of a pair of top squarks at the LHC is presented. This search targets a region of parameter space where the kinematics of top squark pair production and top quark pair production are very similar, because of the mass difference between the top squark and the neutralino being close to the top quark mass. The search is performed with 35.9 fb −1 of proton-proton collisions at a centre-of-mass energy of s=13 TeV, collected by the CMS detector in 2016, using events containing one electron-muon pair with opposite charge. The search is based on a precise estimate of the top quark pair background, and the use of the M T2 variable, which combines the transverse mass of each lepton and the missing transverse momentum. No excess of events is found over the standard model predictions. Exclusion limits are placed at 95% confidence level on the production of top squarks up to masses of 208 GeV for models with a mass difference between the top squark and the lightest neutralino close to that of the top quark.[Figure not available: see fulltext.].

KW - Hadron-Hadron scattering (experiments)

KW - Supersymmetry

KW - top squark

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U2 - 10.1007/JHEP03(2019)101

DO - 10.1007/JHEP03(2019)101

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VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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The CMS Collaboration. Search for the pair production of light top squarks in the e ^± μ ^∓ final state in proton-proton collisions at √s=13 TeV Journal of High Energy Physics. 2019 Mar 1;2019(3):101. doi: 10.1007/JHEP03(2019)101