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100 _a20230123a2021 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aCombined searches for the production of supersymmetric top quark partners in proton-proton collisions at √s=13TeV
_fA. R. Tumasyan, W. Adam, J. W. Andrejkovic [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 123 tit.]
330 _aA combination of searches for top squark pair production using proton-proton collision data at a center-of-mass energy of 13TeV at the CERN LHC, corresponding to an integrated luminosity of 137fb−1 collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on the model, the combined result excludes a top squark mass up to 1325GeV for a massless neutralino, and a neutralino mass up to 700GeV for a top squark mass of 1150GeV. Top squarks with masses from 145 to 295GeV, for neutralino masses from 0 to 100GeV, with a mass difference between the top squark and the neutralino in a window of 30GeV around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420GeV.
461 _tEuropean Physical Journal C
463 _tVol. 81, iss. 11
_v[970, 35 p.]
_d2021
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aHadron-Hadron scattering (experiments)
701 1 _aTumasyan
_bA. R.
701 1 _aAdam
_bW.
_gWolfgang
701 1 _aAndrejkovic
_bJ. W.
_gAleksandr Dmitrievich
701 1 _aBabaev
_bA. A.
_cphysicist
_cengineer-issledovatelskogo Polytechnic University, candidate of physical and mathematical Sciences
_f1981-
_gAnton Anatoljevich
_2stltpush
_3(RuTPU)RU\TPU\pers\35154
701 1 _aOkhotnikov
_bV. V.
_cphysicist
_cengineer of Tomsk Polytechnic University
_f1992-
_gVitaly Vladimirovich
_2stltpush
_3(RuTPU)RU\TPU\pers\36453
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа физики высокоэнергетических процессов
_c(2017- )
_h8118
_2stltpush
_3(RuTPU)RU\TPU\col\23551
801 2 _aRU
_b63413507
_c20230123
_gRCR
856 4 _uhttps://doi.org/10.1140/epjc/s10052-021-09721-5
942 _cCF