Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV
Yazarlar (7)
Dr. Öğr. Üyesi Sevgi TEKTEN AKTAŞ Kafkas Üniversitesi, Türkiye
Prof. Dr. Mithat Kaya Marmara Üniversitesi, Türkiye
Prof. Dr. Erhan Gülmez Boğaziçi Üniversitesi, Türkiye
Prof. Dr. Salim Çerçi Adıyaman Üniversitesi, Türkiye
Prof. Dr. Elif Aslı Yetkin İstanbul Bilgi Üniversitesi, Türkiye
Prof. Dr. Aysel Kayış Topaksu Çukurova Üniversitesi, Türkiye
Doç. Dr. Özlem Kaya Milli Savunma Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Springer Science and Business Media LLC
Dergi ISSN 2107-1302
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili Türkçe Basım Tarihi 11-2021
Kabul Tarihi 26-10-2021 Yayınlanma Tarihi 01-11-2021
Cilt / Sayı / Sayfa 2021 / 0 / – DOI 10.1007/JHEP11(2021)153
Makale Linki http://dx.doi.org/10.1007/jhep11(2021)153
UAK Araştırma Alanları
Fizik
Özet
Abstract A search is presented for new particles produced at the LHC in proton-proton collisions at $$ \sqrt{s} $$ s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb−1, collected in 2017–2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb−1, collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.
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