000 03148nlm1a2200409 4500
001 663687
005 20231030041903.0
035 _a(RuTPU)RU\TPU\network\34857
035 _aRU\TPU\network\33945
090 _a663687
100 _a20210226a2019 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aSearch for a heavy resonance decaying to a top quark and a vector-like top quark in the lepton + jets final state in pp collisions at s√=13TeV
_fA. M. Sirunyan, A. R. Tumasyan, W. Adam [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 73 tit.]
330 _aA search is presented for a heavy spin-1 resonance Z′Z′ decaying to a top quark and a vector-like top quark partner TT in the lepton + jets final state. The search is performed using a data set of pp pp collisions at a centre-of-mass energy of 13TeVTeV corresponding to an integrated luminosity of 35.9fb−135.9fb−1 as recorded by the CMS experiment at the CERN LHC in the year 2016. The analysis is optimised for final states arising from the TT decay modes to a top quark and a Higgs or ZZ boson (T→Ht,ZtT→Ht,Zt). The event selection makes use of resolved and merged top quark decay products, as well as decays of boosted Higgs bosons and ZZ and WW bosons using jet substructure techniques. No significant deviation from the standard model background expectation is observed. Exclusion limits on the product of the cross section and branching fraction for Z′→tT,T→Ht,Zt,WbZ′→tT,T→Ht,Zt,Wb are presented for various combinations of the Z′Z′ resonance mass and the vector-like TT quark mass. These results represent the most stringent limits to date for the decay mode Z′→tT→tHtZ′→tT→tHt. In a benchmark model with extra dimensions, invoking a heavy spin-1 resonance G∗G∗, masses of the G∗G∗ between 1.5 and 2.3TeVTeV and between 2.0 and 2.4TeVTeV are excluded for TT masses of 1.2 and 1.5TeVTeV, respectively.
461 _tEuropean Physical Journal C
463 _tVol. 79, iss. 3
_v[208, 32 p.]
_d2019
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aкварки
610 1 _aпротон-протонные соударения
701 1 _aSirunyan
_bA. M.
701 1 _aTumasyan
_bA. R.
701 1 _aAdam
_bW.
_gWolfgang
701 1 _aAmbrogi
_bF.
_gFederico
701 1 _aAsilar
_bE.
_gEce
701 1 _aBergauer
_bT.
_gThomas
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
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
_c20210226
_gRCR
856 4 _uhttps://doi.org/10.1140/epjc/s10052-019-6688-5
942 _cCF