Y(nS) polarizations versus particle multiplicity in pp collisions at sqrt(s) = 7 TeV

Khachatryan, Vardan; ...; Pleština, R.; ...; Godinović, Nikola; Lelas, Damir; Puljak, Ivica; ...; Antunović, Željko; Kovač, Marko; Brigljević, Vuko; Kadija, Krešo; Luetić, Jelena; Mićanović, Saša; Sudić, Lucija; ...; Morović, Srećko; ...; Ferenček, Dinko; ...; Đurić, Senka; ...; Woods, Nate

doi:10.1016/j.physletb.2016.07.065

Pregled bibliografske jedinice broj: 875664

Y(nS) polarizations versus particle multiplicity in pp collisions at sqrt(s) = 7 TeV

Khachatryan, Vardan; ...; Pleština, R.; ...; Godinović, Nikola; Lelas, Damir; Puljak, Ivica; ...; Antunović, Željko; Kovač, Marko et al.

Y(nS) polarizations versus particle multiplicity in pp collisions at sqrt(s) = 7 TeV // Physics letters. B, 761 (2016), 31-52 doi:10.1016/j.physletb.2016.07.065 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 875664 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Y(nS) polarizations versus particle multiplicity in pp collisions at sqrt(s) = 7 TeV

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

Izvornik
Physics letters. B (0370-2693) 761 (2016); 31-52

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

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

Sažetak
The polarizations of the Y(1S), Y(2S), and Y(3S) mesons are measured as a function of the charged particle multiplicity in proton-proton collisions at sqrt(s) = 7 TeV. The measurements are performed with a dimuon data sample collected in 2011 by the CMS experiment, corresponding to an integrated luminosity of 4.9 inverse femtobarns. The results are extracted from the dimuon decay angular distributions, in two ranges of Y(nS) transverse momentum (10-15 and 15-35 GeV), and in the rapidity interval abs(y) < 1.2. The results do not show significant changes from low- to high-multiplicity pp collisions, although large uncertainties preclude definite statements in the Y(2S) and Y(3S) cases.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA

Projekti:
HRZZ-7118
HRZZ-09.01/346 - Potraga za novim standardnim modelom elementarnih čestica na LHC-u: od preciznih mjerenja elektroslabih procesa do direktnih potraga za novom fizikom (Brigljević, Vuko, HRZZ ) ( CroRIS)

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

Profili:

Senka Đurić (autor)