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Pregled bibliografske jedinice broj: 814785

Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton- proton collisions at sqrt(s) = 8 TeV


Khachatryan, Vardan; ...; Morović, Srećko; Ferenček, Dinko; Đurić, Senka; Godinović, Nikola; Lelas, Damir; Polić, Dunja; Puljak, Ivica; Antunović, Željko et al.
Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton- proton collisions at sqrt(s) = 8 TeV // Journal of High Energy Physics, 6 (2015), 121-1 doi:10.1007/JHEP06(2015)121 (međunarodna recenzija, članak, znanstveni)


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Naslov
Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton- proton collisions at sqrt(s) = 8 TeV

Autori
Khachatryan, Vardan ; ... ; Morović, Srećko ; Ferenček, Dinko ; Đurić, Senka ; Godinović, Nikola ; Lelas, Damir ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Sudić, Lucija ; ... ; Woods, Nate

Izvornik
Journal of High Energy Physics (1029-8479) 6 (2015); 121-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
High energy physics ; Experimental particle physics ; LHC ; CMS ; Standard Model

Sažetak
A search is presented for particle dark matter produced in association with a pair of top quarks in pp collisions at a centre-of-mass energy of sqrt(s) = 8 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 19.7 inverse femtobarns. This search requires the presence of one lepton, multiple jets, and large missing transverse energy. No excess of events is found above the SM expectation, and upper limits are derived on the production cross section. Interpreting the findings in the context of a scalar contact interaction between fermionic dark matter particles and top quarks, lower limits on the interaction scale are set. These limits are also interpreted in terms of the dark matter-nucleon scattering cross sections for the spin-independent scalar operator and they complement direct searches for dark matter particles in the low mass region.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-7118 - Mjerenje svojstava Higgsovog bozona i potraga za novom fizikom detektorom CMS (Ivica Puljak, )
HRZZ-IS-09.01/346 - Potraga za novim standardnim modelom elementarnih čestica na LHC-u: od preciznih mjerenja elektroslabih procesa do direktnih potraga za novom fizikom (Vuko Brigljević, )

Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Split

Citiraj ovu publikaciju

Khachatryan, Vardan; ...; Morović, Srećko; Ferenček, Dinko; Đurić, Senka; Godinović, Nikola; Lelas, Damir; Polić, Dunja; Puljak, Ivica; Antunović, Željko et al.
Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton- proton collisions at sqrt(s) = 8 TeV // Journal of High Energy Physics, 6 (2015), 121-1 doi:10.1007/JHEP06(2015)121 (međunarodna recenzija, članak, znanstveni)
Khachatryan, V., ..., Morović, S., Ferenček, D., Đurić, S., Godinović, N., Lelas, D., Polić, D., Puljak, I. & Antunović, Ž. (2015) Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton- proton collisions at sqrt(s) = 8 TeV. Journal of High Energy Physics, 6, 121-1 doi:10.1007/JHEP06(2015)121.
@article{article, year = {2015}, pages = {121-1-121-39}, DOI = {10.1007/JHEP06(2015)121}, keywords = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model}, journal = {Journal of High Energy Physics}, doi = {10.1007/JHEP06(2015)121}, volume = {6}, issn = {1029-8479}, title = {Search for the production of dark matter in association with top-quark pairs in the single-lepton final state in proton- proton collisions at sqrt(s) = 8 TeV}, keyword = {High energy physics, Experimental particle physics, LHC, CMS, Standard Model} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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