Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at √s=13TeV; European Physical Journal C; Vol. 81, iss. 11

Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at √s=13TeV; European Physical Journal C; Vol. 81, iss. 11

Xehetasun bibliografikoak
Parent link:	European Physical Journal C Vol. 81, iss. 11.— 2021.— [970, 35 p.]
Erakunde egilea:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Beste egile batzuk:	Tumasyan A. R., Adam W. Wolfgang, Andrejkovic J. W. Aleksandr Dmitrievich, Babaev A. A. Anton Anatoljevich, Okhotnikov V. V. Vitaly Vladimirovich
Gaia:	Title screen A 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.
Hizkuntza:	ingelesa
Argitaratua:	2021
Gaiak:	электронный ресурс труды учёных ТПУ Hadron-Hadron scattering (experiments)
Sarrera elektronikoa:	https://doi.org/10.1140/epjc/s10052-021-09721-5
Formatua:	Baliabide elektronikoa Liburu kapitulua
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=668747

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