Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at s=13TeV

Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at s=13TeV

Бібліографічні деталі
Parent link:	Physics Letters B Vol. 782.— 2018.— [P. 440-467]
Співавтор:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Інші автори:	Sirunyan А. М., Tumasyan A. R., Adam W. Wolfgang, Ambrogi F. Federico, Asilar E. Ece, Bergauer T. Thomas, Babaev A. A. Anton Anatoljevich
Резюме:	Title screen A search is presented for new physics in events with two low-momentum, oppositely charged leptons (electrons or muons) and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data collected using the CMS detector at the LHC correspond to an integrated luminosity of 35.9fb−1. The observed event yields are consistent with the expectations from the standard model. The results are interpreted in terms of pair production of charginos and neutralinos (χ˜1± and χ˜20) with nearly degenerate masses, as expected in natural supersymmetry models with light higgsinos, as well as in terms of the pair production of top squarks (t˜ ), when the lightest neutralino and the top squark have similar masses. At 95% confidence level, wino-like χ˜1±/χ˜20 masses are excluded up to 230 GeV for a mass difference of 20 GeV relative to the lightest neutralino. In the higgsino-like model, masses are excluded up to 168 GeV for the same mass difference. For t˜ pair production, top squark masses up to 450 GeV are excluded for a mass difference of 40 GeV relative to the lightest neutralino.
Мова:	Англійська
Опубліковано:	2018
Предмети:	электронный ресурс труды учёных ТПУ CMS SUSY compressed leptons missing energy лептоны
Онлайн доступ:	https://doi.org/10.1016/j.physletb.2018.05.062
Формат:	Електронний ресурс Частина з книги
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661268

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