J/ψ production as a function of charged particle multiplicity in pp collisions at √s = 7 TeV

Abelev, B.; ...; Antičić, Tome; ...; Gotovac, Sven; ...; Mudnić, Eugen; ...; Šuša, Tatjana; ...; Vicković, Linda; ...; Zynovyev, M.

doi:10.1016/j.physletb.2012.04.052

Pregled bibliografske jedinice broj: 593020

J/ψ production as a function of charged particle multiplicity in pp collisions at √s = 7 TeV

Abelev, B.; ...; Antičić, Tome; ...; Gotovac, Sven; ...; Mudnić, Eugen; ...; Šuša, Tatjana; ... et al.

J/ψ production as a function of charged particle multiplicity in pp collisions at √s = 7 TeV // Physics letters. B, 712 (2012), 3; 165-175 doi:10.1016/j.physletb.2012.04.052 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 593020 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
J/ψ production as a function of charged particle multiplicity in pp collisions at √s = 7 TeV

Autori
Abelev, B. ; ... ; Antičić, Tome ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Šuša, Tatjana ; ... ; Vicković, Linda ; ... ; Zynovyev, M.

Izvornik
Physics letters. B (0370-2693) 712 (2012), 3; 165-175

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

Ključne riječi
ALICE; LHC; CERN; strange particle; pp; 7 TeV; J/Psi; Production

Sažetak
The ALICE Collaboration reports the measurement of the relative J/ψ yield as a function of charged particle pseudorapidity density dNch/dη in pp collisions at √s = 7 TeV at the LHC. J/ψ particles are detected for pt > 0, in the rapidity interval |y| < 0.9 via decay into e+e−, and in the interval 2.5 < y < 4.0 via decay into μ+μ− pairs. An approximately linear increase of the J/ψ yields normalized to their event average (dNJ/ψ /dy)/dNJ/ψ /dy with (dNch/dη)/dNch/dη is observed in both rapidity ranges, where dNch/dη is measured within |η| < 1 and pt > 0. In the highest multiplicity interval with dNch/dη(bin) = 24.1, corresponding to four times the minimum bias multiplicity density, an enhancement relative to the minimum bias J/ψ yield by a factor of about 5 at 2.5 < y < 4 (8 at |y| < 0.9) is observed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
The ALICE Collaboration

POVEZANOST RADA

Projekti:
098-0982887-2878 - Eksperimentalna fizika na LHC energijama (Kadija, Krešo, MZOS ) ( CroRIS)

Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb

Profili:

Tatjana Šuša (autor)