Search for new physics in events with two soft oppositely charged leptons and missing transverse momentum in proton-proton collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2018)
Makale Dili İngilizce Basım Tarihi 07-2018
Cilt / Sayı / Sayfa 782 / 1 / 440–467 DOI 10.1016/j.physletb.2018.05.062
Makale Linki https://www.sciencedirect.com/science/article/am/pii/S037026931830426X?via%3Dihub
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
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 35.9 fb− 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˜ 2 0) 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˜ 2 0 masses are excluded up to 230 GeV for a mass difference of 20 GeV relative to the lightest neutralino. In the higgsino-like model …
Anahtar Kelimeler
CMS | Compressed | Leptons | Missing energy | SUSY