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Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at root s=8 TeV
dc.creator | Khachatryan, V. | |
dc.creator | Adžić, Petar | |
dc.creator | Ekmedžić, Marko | |
dc.creator | Milošević, Jovan | |
dc.creator | Meglić, Katarina | |
dc.creator | Đorđević, Miloš | |
dc.creator | Milenović, Predrag | |
dc.date.accessioned | 2018-03-01T15:52:21Z | |
dc.date.available | 2018-03-01T15:52:21Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 1550-7998 | |
dc.identifier.issn | 1550-2368 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/366 | |
dc.description.abstract | A search is performed for long-lived massive neutral particles decaying to quark-antiquark pairs. The experimental signature is a distinctive topology of a pair of jets, originating at a secondary vertex. Events were collected with the CMS detector at the CERN LHC in proton-proton collisions at a center-of-mass energy of 8 TeV. The data analyzed correspond to an integrated luminosity of 18.5 fb(-1). No significant excess is observed above standard model expectations. Upper limits at 95% confidence level are set on the production cross section of a heavy neutral scalar particle, H, in the mass range of 200 to 1000 GeV, decaying promptly into a pair of long-lived neutral X particles in the mass range of 50 to 350 GeV, each in turn decaying into a quark-antiquark pair. For X with mean proper decay lengths of 0.4 to 200 cm, the upper limits are typically 0.5-200 fb. The results are also interpreted in the context of an R-parity-violating supersymmetric model with long-lived neutralinos decaying into a quark-antiquark pair and a muon. For pair production of squarks that promptly decay to neutralinos with mean proper decay lengths of 2-40 cm, the upper limits on the cross section are typically 0.5-3 fb. The above limits are the most stringent on these channels to date. | en |
dc.relation | BMWFW, FWF (Austria), FNRS (Belgium), FWO (Belgium), CNPq, CAPES, FAPERJ, FAPESP (Brazil) | |
dc.rights | openAccess | en |
dc.source | Physical Review D | en |
dc.title | Search for long-lived neutral particles decaying to quark-antiquark pairs in proton-proton collisions at root s=8 TeV | en |
dc.type | article | en |
dcterms.abstract | Aдзиц, П.; Милошевић Јован; Миленовић Предраг; Екмедзиц, М.; Кхацхатрyан, В.; Рековиц, В.; Ђорђевић Милош; | |
dc.citation.volume | 91 | |
dc.citation.issue | 1 | |
dc.identifier.wos | 000348329000001 | |
dc.identifier.doi | 10.1103/PhysRevD.91.012007 | |
dc.citation.rank | M21 | |
dc.contributor.count | CMS Collaboration (ukupan broj autora: 2147) | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-84921459273 | |
dc.identifier.fulltext | https://vinar.vin.bg.ac.rs//bitstream/id/12510/362.pdf |