Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV

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

doi:10.1140/epjc/s10052-014-3014-0

Pregled bibliografske jedinice broj: 814855

Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV

Khachatryan, Serguei; ...; Ferenček, Dinko; Đurić, Senka; Godinović, Nikola; Lelas, Damir; Polić, Dunja; Puljak, Ivica; Antunović, Željko; Kovač, Marko et al.

Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV // European physical journal C, 74 (2015), 3014-1 doi:10.1140/epjc/s10052-014-3014-0 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 814855 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Measurement of jet multiplicity distributions in t t-bar production in pp collisions at sqrt(s) = 7 TeV

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

Izvornik
European physical journal C (1434-6044) 74 (2015); 3014-1

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

Ključne riječi
high energy physics ; experimental particle physics ; LHC ; CMS ; standard model

Sažetak
The normalised differential top quark-antiquark production cross section is measured as a function of the jet multiplicity in proton-proton collisions at a centre-of-mass energy of 7 TeV at the LHC with the CMS detector. The measurement is performed in both the dilepton and lepton + jets decay channels using data corresponding to an integrated luminosity of 5.0 inverse femtobarns. Using a procedure to associate jets to decay products of the top quarks, the differential cross section of the t t-bar production is determined as a function of the additional jet multiplicity in the lepton + jets channel. Furthermore, the fraction of events with no additional jets is measured in the dilepton channel, as a function of the threshold on the jet transverse momentum. The measurements are compared with predictions from perturbative quantum chromodynamics and no significant deviations are observed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Projekti:
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
023-0982887-3064 - Potraga za Higgsovim bozonom i novom fizikom detektorom CMS (Puljak, Ivica, MZOS ) ( CroRIS)
098-0982887-2878 - Eksperimentalna fizika na LHC energijama (Kadija, Krešo, MZOS ) ( CroRIS)
HRZZ-IP-2013-11-7118 - Mjerenje svojstava Higgsovog bozona i potraga za novom fizikom detektorom CMS (HIGGSPRO) (Puljak, Ivica, HRZZ - 2013-11) ( CroRIS)

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

Profili:

Senka Đurić (autor)