Search for new physics with long lived particles decaying to photons andmissing energy in pp collisions at root s 7 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 1126-6708 Dergi Bilgileri (2012)
Dergi Tarandığı Indeksler SCI
Makale Dili İngilizce Basım Tarihi 11-2012
Kabul Tarihi 07-11-2012 Yayınlanma Tarihi 01-11-2012
Cilt / Sayı / Sayfa 2012 / 11 / – DOI 10.1007/JHEP11(2012)172
Makale Linki https://link.springer.com/content/pdf/10.1007/JHEP11(2012)172.pdf
UAK Araştırma Alanları
Yüksek Enerji ve Parçacık Fiziği
Özet
A search is performed for long-lived neutral particles decaying into a photon and invisible particles. An example of such a signature is the decay of the lightest neutralino with nonzero lifetime into a gravitino and a photon in gauge-mediated supersymmetry, with the neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest. The search uses events containing photons, missing transverse energy, and jets. The impact parameter of the photon relative to the beam-beam collision point can be reconstructed using converted photons. The method is sensitive to lifetimes of the order of 0.1 to 1 ns. The data sample corresponds to an integrated luminosity of 2.23 fb− 1 in pp collisions at TeV, recorded in the first part of 2011 by the CMS experiment at the LHC. Cross-section limits are presented on pair production for such particles, each of which decays into a photon and invisible particles …
Anahtar Kelimeler
Hadron-Hadron Scattering