Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √s=13 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of High Energy Physics (Q1)
Dergi ISSN 1029-8479 Dergi Bilgileri (2018)
Makale Dili İngilizce Basım Tarihi 01-2018
Kabul Tarihi 09-01-2018 Yayınlanma Tarihi 01-01-2018
Cilt / Sayı / Sayfa 2018 / 1 / – DOI 10.1007/JHEP01(2018)097
Makale Linki http://hdl.handle.net/11384/70190
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at s=13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1. The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV.[Figure not available: see fulltext.].
Anahtar Kelimeler
Dark matter | Hadron-Hadron scattering (experiments) | Jet substructure | Jets